EP2075654B1 - Portable electronic device designed to display the value of variables based on measurements taken by a sensor and having a history function - Google Patents

Portable electronic device designed to display the value of variables based on measurements taken by a sensor and having a history function Download PDF

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Publication number
EP2075654B1
EP2075654B1 EP07150448A EP07150448A EP2075654B1 EP 2075654 B1 EP2075654 B1 EP 2075654B1 EP 07150448 A EP07150448 A EP 07150448A EP 07150448 A EP07150448 A EP 07150448A EP 2075654 B1 EP2075654 B1 EP 2075654B1
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EP
European Patent Office
Prior art keywords
value
mode
display
values
time
Prior art date
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EP07150448A
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German (de)
French (fr)
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EP2075654A1 (en
Inventor
Jean-Bernard Veuthey
Fabien Bally
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ETA SA Manufacture Horlogere Suisse
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ETA SA Manufacture Horlogere Suisse
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Priority to AT07150448T priority Critical patent/ATE501469T1/en
Priority to ES07150448T priority patent/ES2360734T3/en
Priority to DE602007013075T priority patent/DE602007013075D1/en
Priority to EP07150448A priority patent/EP2075654B1/en
Priority to CA002647676A priority patent/CA2647676A1/en
Priority to AU2008261168A priority patent/AU2008261168C1/en
Priority to IL196140A priority patent/IL196140A0/en
Priority to JP2008329181A priority patent/JP5389435B2/en
Priority to SG200809591-1A priority patent/SG153791A1/en
Priority to KR1020080134287A priority patent/KR101266743B1/en
Priority to CN2008102463712A priority patent/CN101482731B/en
Priority to US12/345,496 priority patent/US8243553B2/en
Publication of EP2075654A1 publication Critical patent/EP2075654A1/en
Priority to HK09112331.4A priority patent/HK1135481A1/en
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Publication of EP2075654B1 publication Critical patent/EP2075654B1/en
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    • G—PHYSICS
    • G04—HOROLOGY
    • G04G—ELECTRONIC TIME-PIECES
    • G04G9/00—Visual time or date indication means
    • G04G9/08—Visual time or date indication means by building-up characters using a combination of indicating elements, e.g. by using multiplexing techniques
    • G—PHYSICS
    • G04—HOROLOGY
    • G04G—ELECTRONIC TIME-PIECES
    • G04G21/00—Input or output devices integrated in time-pieces
    • G04G21/02—Detectors of external physical values, e.g. temperature

Definitions

  • the present invention relates to a portable electronic device comprising a case containing a watch movement surmounted by a display, said watch movement comprising electronic circuits capable of producing time signals intended for control means of said display, said electronic circuits being provided for being selectively in one or more of a plurality of modes of operation, said plurality of modes of operation including a first mode, said time mode, wherein said display is provided to indicate the time.
  • the electronic device further comprises a sensor provided for performing a measurement of a physical quantity and for renewing said measurement with a given frequency.
  • the display is provided to provide a first indication representative of the current value of said measurement, and a second indication representative of a variation in time of said measurement.
  • the electronic device further comprises storage means provided for, in said acquisition mode, recording at a given periodicity a succession of values each corresponding to an instantaneous value of said current value.
  • Patent applications published under the numbers WO 2005/096105 A1 and EP 1 571 506 A1 also in the name of the Applicant, describe an electronic device in which analog display members are controlled to display the current time, in a first operating mode, and to respectively display the measurement of a time interval and the instantaneous depth, calculated from pressure measurements made by a sensor of the device.
  • the electronic device comprises storage means for storing values of the measured pressure to allow reproduction of the behavior that the display members have exhibited during the measurements, in a third mode of operation called historical mode, the reproduction being based on the stored values.
  • a known solution to answer this problem is to increase the value of the storage period, in particular according to the total duration of measurements.
  • Such a solution shows its limits when the duration of the measurements is very important since the representativity of the values stored in relation to the measured values suffers greatly.
  • EP1'571'506 which provides a portable electronic device of the type mentioned above characterized in that in a third mode, said historical mode, said electronic circuits are provided for, on the base of a single series of recorded values of the atmospheric pressure, to display in parallel in a predetermined time interval two chronological sequences of values, a first of said suites corresponding to the altitude, which is a quantity directly representative of the pressure, and the other one of the said sequences corresponding to the difference in altitude which is calculated by making the difference between the displayed value of the altitude and the value of the altitude at the beginning of the acquisition mode.
  • a first object of the present invention is to overcome the aforementioned drawbacks of the prior art by providing a portable electronic device according to the appended claim 1.
  • the present invention also relates to a portable device history display method according to the appended claim 9.
  • An advantage of the present invention is that the electronic circuits of the device are arranged to make a jump in the unwinding of the historical mode, in response to an action of a user, to control the analog display members so that they pass from displaying a first value associated with a first stored value Pi with the display of a second value associated with a second stored value Pj located chronologically before or after the first stored value Pi and spaced in time from the latter; more than once the value of the storage period.
  • the value representative of the variation over time of the physical quantity associated with the value Pj is calculated at least on the basis of the stored values Pj and Pj -1 .
  • the progress of the display of the history can be interrupted and possibly resumed under the effect of predefined actions of a user.
  • the electronic circuits also store the duration during which the acquisition mode has remained active or, alternatively, the value of the period defining the periodicity according to which memory means record the current value of the measurement,
  • This variant is a preferred embodiment especially if the period does not have a single value defined by the manufacturer but depends, on the contrary, the conditions of use of the electronic device .
  • the senor used is a pressure sensor for measuring the attitude or depth, but it is understood that the invention can be implemented with other types sensor such as a temperature sensor or a magnetic field sensor for example.
  • a number of alternative embodiments can be provided, such as a specific display of the measured values during acquisition, an adaptation of the display scales in the historical mode according to the measured extremes, an automatic or manual activation. mode of acquisition, a plurality of memory areas each of which is dedicated to a series of special measurements, or the arrangement of at least one LCD screen on the dial to complete the analog display.
  • the electronic device could display other indications.
  • the display could also provide a third indication representative of a variation in time of said second indication (i.e., an indication of the acceleration of the variation over time of the measurement).
  • the figure 1 represents a preferred embodiment of the portable electronic device according to the present invention, in the form of a diving watch, very simple both from the structural point of view and from the point of view of its operation.
  • the watch 1 is in appearance as a watch of conventional type. This comprises, in fact, a housing 2 which may be, for example, metal screwed bottom, comprising horns (not shown) provided for the attachment of a bracelet (not shown) and containing in particular a watch movement (no represented), a dial 4 and closed on its upper face by an ice, carrying a fixed bezel 6 on its periphery.
  • the watch 1 further comprises three control members of the traditional type, namely two pushers 7 and 8 and a crown-setting rod 9.
  • the dive watch 1 is preferably provided with a touch screen, that is to say that it is covered with capacitive electrodes, alternatively or in addition to the pushers 7 and 8, without departing from the scope of FIG. the present invention.
  • the telescope 6 carries first graduations of depth 10 variable scale extending from a first indication of 0 meters, located at noon, until a last indication of 50 meters, arranged at eleven o'clock.
  • the dial 4 carries second circular graduations 12, the unit of which is the meter / minute, subdivided into two zones.
  • the first zone 13 extends, in the clockwise direction, from the position corresponding to the graduation of 20 meters at eight o'clock to the position corresponding to the graduation of 30 meters at nine o'clock.
  • the second zone 14 extends, in the clockwise direction, from the end of the first zone 13 to the position corresponding to the 0 meter graduation.
  • the graduations of the second zone 14 correspond to an ascending speed scale and extend between 0m / min and 30m / min, while the first zone corresponds to negative climbing speeds and has no scale.
  • the watch 1 also comprises two hands, respectively, for indicating the hours 16 and minutes 17.
  • the dial 4 furthermore has a window through which a liquid crystal display (LCD) 18 is made visible.
  • LCD liquid crystal display
  • the watch 1 comprises particular technical means, which will be described briefly later in connection with the figure 2 , allowing him to provide specific indications relating to the practice of diving.
  • These technical means include a pressure sensor provided for measuring the ambient pressure and to repeat this measurement at close intervals, and electronic circuits for converting the values taken by this measurement into depths in the context of the dive.
  • a first mode of operation, or time mode wherein the conventional functions are provided by the hour and minute hands.
  • the crown rod 9 has two stable positions, a first stable position being the rest position in which the stem crown does not perform any function.
  • the second stable position is a position pulled relative to the rest position, in which the crown rod allows to adjust, by rotation, the indication of the time provided by the two needles 16, 17.
  • Conventional means are advantageously provided for effecting an automatic change of operating mode, in particular for switching from the time mode to a second operating mode, called the dive mode, when a dive starts. These means allow conversely to return to the time mode, automatically, from the dive mode when the diver, wearing the watch, resurfaced. Such means are for example described in the application WO 2005/096105 A1 already mentioned.
  • the functions respectively associated with the minute hands 17 and hours 16 are the display of the instantaneous depth and the display of the rate of climb.
  • the diving watch 1 comprises a third mode of operation, called historic mode, preferably activated by an action of the user, for example by means of a pressure on the crown rod 9 followed by a selection made by a contact on the touch screen.
  • means are provided for controlling the hands of the hours 16 and minutes 17, so that they exhibit a behavior representative of the course of the dive in relation to which data have been stored.
  • a possible variant of implementation of the history from the point of view of the speed of reproduction consists in reproducing any dive carried out, whatever the duration, in a time window predefined by the manufacturer of the watch.
  • the time window can be defined with a fixed length or with a variable length, between two extreme values.
  • the duration of the history is set at 30 seconds, the movement of the needles 16 and 17 being then adapted to reduce the effective duration of the dive to 30 seconds.
  • the duration of the history is between 15 and 30 seconds in particular depending on the effective duration of the dive to reproduce.
  • the figure 2 is a schematic diagram of the general structure of the electronic circuit of the diving watch according to the present invention.
  • the electronic circuit of the watch includes an integrated circuit 20 including a controller circuit 21 capable of managing the conventional time functions of the watch 1 comprising, for this purpose, a time division circuit and connected in particular to a resonator 22 providing a time base. From this time base, time information is produced by the controller circuit 21, in particular to provide the functions of the time mode and the functions relating to the diving mode.
  • a controller circuit 21 capable of managing the conventional time functions of the watch 1 comprising, for this purpose, a time division circuit and connected in particular to a resonator 22 providing a time base. From this time base, time information is produced by the controller circuit 21, in particular to provide the functions of the time mode and the functions relating to the diving mode.
  • controller circuit 21 receives as input signals generated by a pressure sensor 23 generating analog electrical signals representative of the surrounding pressure. These signals pass through an analog-digital converter 24 before being supplied to the input of the controller circuit 21, in the form of a digital signal.
  • the pressure sensor 23 is of conventional type and the skilled person will not encounter any particular difficulty to choose one that is suitable for the implementation of the present invention.
  • the integrated circuit 20 also includes memory zones, in particular a first memory zone 25, preferably of the non-volatile type, containing a program enabling the controller circuit 21 to perform calculations relating to the diving mode, such as, for example, the conversion of the measurements. pressure in depth values, in relation to a non-schematized volatile memory zone.
  • the choice of a non-volatile reprogrammable memory possibly makes it possible to update the calculation program later.
  • the integrated circuit 20 preferably comprises at least a second memory zone 26, also of the non-volatile type, in which the measurements as well as the results of the calculations carried out by the control circuit 21 are stored periodically. This second memory zone 26 is in particular designed to store depth measurements. Thus, this information is consulted by the controller circuit 21, in particular when the watch is in the historical mode.
  • the controller circuit 21 determines the plunger's situation at each instant of a dive.
  • the controller circuit 21 then sends signals adapted to a circuit of control 27 bi-directional motor means, for example two bi-directional motors, so that the hour hand 16 displays the speed of variation of the depth opposite the second graduations 12 of the dial.
  • the control circuit 21 produces signals adapted for the control circuit 27 of the motor means in such a way that the minute hand 17 displays the instantaneous depth at each instant of the dive, opposite the graduations 10 carried by the telescope 6 of the watch.
  • the electronic circuit of the watch comprises conventional means (not shown) for detecting pressures made by the user on the crown rod 9.
  • the latter is in position A at rest and has two extreme positions B and C
  • the unstable position B obtained by user pressure activates a function of the controller circuit 21 modifying the operating mode of the watch, as described above.
  • the control circuit 21 when the crown rod 9 is pressed into position B from the time mode, the control circuit 21 generates activation signals of the touch-sensitive glass 4.
  • the user can then select a particular function by placing a finger on an area of the touch screen that he has selected.
  • the skilled person is able to program as desired the integrated circuit 20 of the watch according to the present invention, to provide responses respectively adapted to different possible actions on the stem-crown 9 and / or on the ice touch 4.
  • the integrated circuit 20 controls the display of the liquid crystal display 18 which makes it possible to complete the indications of the hour and minute hands by simultaneously displaying additional information.
  • the LCD display 18 is provided to indicate the actual duration of a dive, either in real time during the course thereof (acquisition mode), or in the historical mode.
  • acquisition mode acquisition mode
  • historical mode historical mode
  • plan to display the maximum depth reached during a dive plan to display the maximum depth reached during a dive.
  • Dive Watch 1 Additional features may also be provided on the Dive Watch 1. Their nature and how to access it, except for the historical mode, will not be discussed in detail as they do not intervene directly in the dive. implementation of the present invention. Examples may be found in the international applications cited above, by way of non-limiting illustration.
  • the watch activates the dive mode.
  • the two needles 17 and 16 are initially positioned respectively opposite the indication corresponding to 0 meter, carried by the telescope 6 and, at nine o'clock, in other words opposite the indication 0m / min carried by the dial 4.
  • the minute hand 17 starts to turn clockwise to indicate the value of the instantaneous depth opposite the graduations 10.
  • the hour hand 16 moves, next to the seconds graduations 12, to indicate the value of the variation of the depth.
  • the first zone 13 of the second graduations 12 does not carry a scale.
  • Downhill speeds are not displayed accurately but only roughly.
  • Such an embodiment is of course illustrative and the skilled person can use a different display, adapted to his own needs, without departing from the scope of the present invention.
  • the rate of change of the depth is calculated on the basis of an average made from several successive values of the depth.
  • the variation speed displayed during the dive mode by the hour hand 16 may be a sliding average of the last three instantaneous speeds, the latter being directly calculated on the basis of the measurements made by the sensor. pressure. It will be understood that in historical mode, this method of calculation can not be applied at the very first moment of the dive. In this case, the initially displayed speed may be artificially constant, to avoid the display of unrealistic values, due to the selected calculation algorithm, depending on the behavior of the user. It is possible to provide, for example, that the initial speed displayed is of the order of 10m / min during the first seconds of the dive.
  • the pressure sensor can be powered to perform one measurement per second. It is preferable to store each measurement in a specific memory area for at least the first three minutes. If the dive is an apnea that lasts less than three minutes, a sufficient number of measurements are stored to allow a reliable reproduction of the history of the dive.
  • the measurements are advantageously stored at a frequency lower than the measurement frequency of the pressure sensor.
  • Such an arrangement makes it possible to limit the size of the necessary memory zone when the duration of the dive becomes greater, without significantly affecting the reproduction quality of the history.
  • recording a value of the pressure, or depth with a period of the order of a few tens of seconds in a bottle dive, for example, every 30 seconds.
  • a large part of the stored measurements is erased so as to free memory locations for subsequent measurements. In fact, it suffices to keep only measurements previously made at time intervals of a duration corresponding to the period for recording the bottle diving measurements, ie 30 seconds following the previously mentioned example.
  • Requirement WO 2005/096105 A1 discloses an alternative embodiment defining a more gradual variation of the frequency of storing the results of the measurements.
  • the skilled person may refer to this disclosure or any other known method adapted to optimize the memory management of the watch according to the invention.
  • the present invention proposes to limit the quantity of data to be stored.
  • it is envisaged to memorize only a certain percentage of the values measured or as converted by the circuit integrated, according to the duration of the dive and as is apparent from the foregoing, and a value representative of the recording period of these measurements in the memory zone 26.
  • the representative value of the recording period may be the period itself or, alternatively, the total duration of the dive, the integrated circuit of the watch being programmed to unambiguously deduce the value of the recording period. corresponding.
  • the control circuit 21 controls the motor means so that, on the one hand, the minute hand 17 scans the first graduations to display depth values related to the stored measurements.
  • the integrated circuit calculates, for each of the stored values associated with a displayed depth, a value of the speed of variation of the depth.
  • the value displayed for the rate of change of the depth is preferably artificial. For example, it can be predicted to grow first before being computed on the basis of the first stored depth values.
  • the rate of variation of the depth can be calculated as a sliding average of the instantaneous speed calculated between the last two depths read in memory and the average speed calculated last.
  • the integrated circuit may optionally be programmed in such a way that the first formula is used for short-duration dives, that is to say for example having a duration of less than fifteen minutes, while the second formula is used for dives. longer duration.
  • V i P i + 1 - P i - 1 2 ⁇ T .
  • This formula usable in the historical mode only, has the advantage of minimizing the time difference between the depth and the rate of climb.
  • the present invention also provides the possibility of interrupting the operation of the historical mode in response to an action of a user on one of the external control members and, preferably, to resume it in response to a new action by the user on one of the external control devices.
  • the electronic circuits of the watch are further arranged to make a jump in the flow of the historical mode in response to an action of a user on one of the external control members.
  • This leap in the unwinding results in a control of the analog display members so that the latter pass from the display of a first value associated with a first stored value Pi to the display of a second value associated with a second stored value Pj located chronologically before or after the first stored value Pi and spaced in time from the latter by more than one time value of the recording period.
  • the time displayed on the LCD 18 is modified accordingly.
  • a pressure on the crown rod 9 causes an interruption of the unwinding while a pressure on the pusher 7 causes a jump forward of a predefined duration in the unfolding of the historical mode and, that a pressure on the pusher 8 causes a jump back of the same predefined duration in the history mode unfolding.
  • the electronic circuits of the watch can also be programmed such that prolonged pressure on the pushers cause the application of a succession of jumps in one direction or the other, or an acceleration in the application of these jumps.
  • the speed displayed by this means at the time of resuming the progress of the history is an instantaneous speed.
  • the figure 3 represents a schematic diagram on which curves are plotted, on the one hand, of the depth as displayed during a dive (curve 100) and as reproduced in the historical mode (curve 200) and, d on the other hand, the rate of variation of the depth as displayed during a dive (curve 300) and as reproduced in the historical mode (curve 400).
  • the device is adapted to allow the recording of several series of data associated with periods of activity, such as diving, spaced apart in time from each other, without departing from the scope of the present invention.
  • the latter is, in this case, not limited to the method used to navigate the different series of data stored in the device memory.
  • the present invention is not limited to a diving watch. It is possible to apply the content of the present disclosure for the realization of an altimeter, a barometer or any other device comprising a sensor other than a pressure sensor, such as a temperature sensor.

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  • General Physics & Mathematics (AREA)
  • Electric Clocks (AREA)
  • Electromechanical Clocks (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)
  • Measuring Pulse, Heart Rate, Blood Pressure Or Blood Flow (AREA)
  • Time Recorders, Dirve Recorders, Access Control (AREA)

Abstract

The device has a controller circuit (21) and a resonator (22) provided in time, acquisition and history modes. Memory zones (25, 26) e.g. RAM and stable memory, stores instantaneous values along given periodicity, in the acquisition mode. The circuit and the resonator parallely display chronological series of values in preset time interval based on the stored values in the history mode. One series directly represent values taken by measurement of physical magnitude in the acquisition mode, and another series is calculated from the stored values and represent time variation in the measurement. An independent claim is also included for a method for displaying a history for a portable electronic device.

Description

Domaine techniqueTechnical area

La présente invention concerne un dispositif électronique portable comportant un boîtier contenant un mouvement horloger surmonté d'un affichage, ledit mouvement horloger comprenant des circuits électroniques susceptibles de produire des signaux horaires à destination de moyens de commande du dit affichage, lesdits circuits électroniques étant prévus pour se trouver sélectivement dans l'un ou l'autre d'une pluralité de modes de fonctionnement, ladite pluralité de modes de fonctionnement comprenant un premier mode, dit mode horaire, dans lequel ledit affichage est prévu pour indiquer l'heure.The present invention relates to a portable electronic device comprising a case containing a watch movement surmounted by a display, said watch movement comprising electronic circuits capable of producing time signals intended for control means of said display, said electronic circuits being provided for being selectively in one or more of a plurality of modes of operation, said plurality of modes of operation including a first mode, said time mode, wherein said display is provided to indicate the time.

Le dispositif électronique selon l'invention comprend en outre un capteur prévu pour effectuer une mesure d'une grandeur physique et pour renouveler ladite mesure avec une fréquence donnée. Dans un deuxième mode de fonctionnement, dit mode d'acquisition, l'affichage est prévu pour fournir une première indication représentative de la valeur courante de ladite mesure, et une seconde indication représentative d'une variation dans le temps de ladite mesure. Le dispositif électronique comprend encore des moyens de mémorisation prévu pour, dans ledit mode d'acquisition, enregistrer selon une périodicité donnée une succession de valeurs correspondant chacune à une valeur instantanée de ladite valeur courante.The electronic device according to the invention further comprises a sensor provided for performing a measurement of a physical quantity and for renewing said measurement with a given frequency. In a second mode of operation, called acquisition mode, the display is provided to provide a first indication representative of the current value of said measurement, and a second indication representative of a variation in time of said measurement. The electronic device further comprises storage means provided for, in said acquisition mode, recording at a given periodicity a succession of values each corresponding to an instantaneous value of said current value.

Etat de la techniqueState of the art

La demande de brevet publiée sous le numéro WO 2005/096106 A1 , au nom de la Demanderesse, décrit un dispositif électronique dans lequel des organes d'affichage analogique sont commandés pour afficher l'heure courante, dans un premier mode de fonctionnement, et pour afficher chacun la valeur d'une variable basée sur la mesure d'une grandeur physique effectuée par un capteur du dispositif, dans un second mode de fonctionnement.The patent application published under the number WO 2005/096106 A1 , in the name of the Applicant, discloses an electronic device in which analog display members are controlled to display the current time, in a first operating mode, and to each display the value of a variable based on the measurement of a physical quantity effected by a sensor of the device, in a second mode of operation.

Les demandes de brevet publiées sous les numéros WO 2005/096105 A1 et EP 1 571 506 A1 , également au nom de la Demanderesse, décrivent un dispositif électronique dans lequel des organes d'affichage analogique sont commandés pour afficher l'heure courante, dans un premier mode de fonctionnement, et pour afficher respectivement la mesure d'un intervalle de temps et la profondeur instantanée, calculée à partir de mesures de pression effectuées par un capteur du dispositif. Ces documents prévoient que le dispositif électronique comprend des moyens de mémorisation destinés à mémoriser des valeurs de la pression mesurée pour permettre une reproduction du comportement que les organes d'affichage ont présenté pendant les mesures, dans un troisième mode de fonctionnement appelé mode historique, la reproduction étant basée sur les valeurs mémorisées.Patent applications published under the numbers WO 2005/096105 A1 and EP 1 571 506 A1 , also in the name of the Applicant, describe an electronic device in which analog display members are controlled to display the current time, in a first operating mode, and to respectively display the measurement of a time interval and the instantaneous depth, calculated from pressure measurements made by a sensor of the device. These documents provide that the electronic device comprises storage means for storing values of the measured pressure to allow reproduction of the behavior that the display members have exhibited during the measurements, in a third mode of operation called historical mode, the reproduction being based on the stored values.

La mise en mémoire d'une série de valeurs associées à une variable mesurée par un capteur permettant la mise en oeuvre d'un mode historique soulève des problèmes de gestion de mémoire dans le cas d'un dispositif portable. Ces problèmes deviennent critiques lorsqu'il s'agit de mémoriser plusieurs séries de valeurs associées à une ou plusieurs variables mesurées, notamment pour des questions d'encombrement de la mémoire et de sa consommation électrique.The storage of a series of values associated with a variable measured by a sensor enabling the implementation of a historical mode raises memory management problems in the case of a portable device. These problems become critical when it comes to memorizing several sets of values associated with one or more measured variables, in particular for issues of memory congestion and its power consumption.

Une solution connue pour répondre à ce problème est d'augmenter la valeur de la période de mise en mémoire, notamment en fonction de la durée totale des mesures. Une telle solution montre toutefois ses limites lorsque la durée des mesures est très importante étant donné que la représentativité des valeurs mémorisées par rapport aux valeurs mesurées en pâtit fortement.A known solution to answer this problem is to increase the value of the storage period, in particular according to the total duration of measurements. Such a solution, however, shows its limits when the duration of the measurements is very important since the representativity of the values stored in relation to the measured values suffers greatly.

Une autre solution pour répondre à ce problème est proposée par EP1'571'506 qui prévoit un dispositif électronique portable du type mentionné plus haut caractérisé par le fait que dans un troisième mode, dit mode historique, lesdits circuits électroniques sont prévus pour, sur la base d'une unique série de valeurs enregistrées de la pression atmosphérique, faire afficher parallèlement dans un intervalle de temps prédéterminé deux suites chronologiques de valeurs, une première des dites suites correspondant à l'altitude, qui est une grandeur directement représentative de la pression, et l'autre des dites suites correspondant au dénivelé qui est calculées en faisant la différence entre la valeur affichée de l'altitude et la valeur de l'altitude au début du mode d'acquisition.Another solution to answer this problem is proposed by EP1'571'506 which provides a portable electronic device of the type mentioned above characterized in that in a third mode, said historical mode, said electronic circuits are provided for, on the base of a single series of recorded values of the atmospheric pressure, to display in parallel in a predetermined time interval two chronological sequences of values, a first of said suites corresponding to the altitude, which is a quantity directly representative of the pressure, and the other one of the said sequences corresponding to the difference in altitude which is calculated by making the difference between the displayed value of the altitude and the value of the altitude at the beginning of the acquisition mode.

Un avantage de cette dernière solution est qu'une seule série de valeurs peut être mémorisée, la deuxième série de valeurs, correspondant aux valeurs représentatives de la variation de la mesure (ou de la grandeur physique mesurée), étant calculée à chaque fois qu'elle doit être affichée. Ainsi, cette série de valeurs est calculée, d'une part, pendant le déroulement du deuxième mode de fonctionnement, lorsque les mesures de la grandeur physique sont acquises par le capteur et, d'autre part, pendant l'affichage de l'historique lorsque les valeurs mesurées qui ont été mémorisées sont rappelées. On comprendra toutefois que la solution proposée par ce document antérieur se limite à calculer la variation de la grandeur physique mesurée par rapport à une valeur initiale de référence. Le document est muet par rapport à la possibilité de calculer la « variation dans le temps » ou autrement dit la vitesse de variation de la grandeur physique. Or, un tel calcul impliquerait l'utilisation d'au moins deux valeurs mémorisées distinctes. Un tel calcul ne pourrait donc pas être appliqué tel quel au tout début de la série.An advantage of the latter solution is that only one set of values can be stored, the second set of values corresponding to the values representative of the variation of the measurement (or the measured physical quantity) being calculated each time that it must be displayed. Thus, this series of values is calculated, on the one hand, during the course of the second mode of operation, when the measurements of the physical quantity are acquired by the sensor and, on the other hand, during the display of the history when the measured values that have been stored are recalled. However, it will be understood that the solution proposed by this prior document is limited to calculating the variation of the measured physical quantity with respect to an initial reference value. The document is silent with respect to the possibility of calculating the "variation in time" or in other words the rate of change of the physical quantity. Such a calculation would imply the use of at least two values memorized separately. Such a calculation could not be applied as such at the very beginning of the series.

Divulgation de l'inventionDisclosure of the invention

Un premier but de la présente invention est de pallier les inconvénients susmentionnés de l'art antérieur en fournissant un dispositif électronique portable conforme à la revendication 1 annexée.A first object of the present invention is to overcome the aforementioned drawbacks of the prior art by providing a portable electronic device according to the appended claim 1.

La présente invention concerne également un procédé d'affichage d'un historique pour dispositif portable conforme à la revendication 9 annexée.The present invention also relates to a portable device history display method according to the appended claim 9.

Un avantage de la présente invention est que les circuits électroniques du dispositif sont agencés pour opérer un saut dans le déroulement du mode historique, en réponse à une action d'un utilisateur, pour commander les organes d'affichage analogique afin que ces derniers passent de l'affichage d'une première valeur associée à une première valeur mémorisée Pi à l'affichage d'une seconde valeur associée à une seconde valeur mémorisée Pj située chronologiquement avant ou après la première valeur mémorisée Pi et espacée dans le temps de cette dernière de plus d'une fois la valeur de la période de mise en mémoire.An advantage of the present invention is that the electronic circuits of the device are arranged to make a jump in the unwinding of the historical mode, in response to an action of a user, to control the analog display members so that they pass from displaying a first value associated with a first stored value Pi with the display of a second value associated with a second stored value Pj located chronologically before or after the first stored value Pi and spaced in time from the latter; more than once the value of the storage period.

Selon un mode de réalisation avantageux, il est encore prévu que la valeur représentative de la variation dans le temps de la grandeur physique associée à la valeur Pj est calculée au moins sur la base des valeurs mémorisées Pj et Pj-1.According to an advantageous embodiment, it is further provided that the value representative of the variation over time of the physical quantity associated with the value Pj is calculated at least on the basis of the stored values Pj and Pj -1 .

Selon un autre mode de réalisation avantageux, il est également prévu que le déroulement de l'affichage de l'historique peut être interrompu puis éventuellement repris sous l'effet d'actions prédéfinies d'un utilisateur.According to another advantageous embodiment, it is also planned that the progress of the display of the history can be interrupted and possibly resumed under the effect of predefined actions of a user.

Selon une variante, les circuits électroniques mettent également en mémoire la durée pendant laquelle le mode d'acquisition est resté activé ou, alternativement, la valeur de la période définissant la périodicité selon laquelle les moyens de mémorisation enregistrent la valeur courante de la mesure, Cette variante constitue un mode de réalisation préféré notamment si la période n'a pas une valeur unique définie par le fabricant mais dépend, au contraire, des conditions d'utilisation du dispositif électronique.According to one variant, the electronic circuits also store the duration during which the acquisition mode has remained active or, alternatively, the value of the period defining the periodicity according to which memory means record the current value of the measurement, This variant is a preferred embodiment especially if the period does not have a single value defined by the manufacturer but depends, on the contrary, the conditions of use of the electronic device .

De manière préférée non limitative, le capteur utilisé est un capteur de pression permettant de mesurer l'attitude ou la profondeur, mais il est bien entendu que l'invention peut être mise en oeuvre avec d'autres types de capteur comme un capteur de température ou un capteur de champ magnétique par exemple.In a non-limiting manner, the sensor used is a pressure sensor for measuring the attitude or depth, but it is understood that the invention can be implemented with other types sensor such as a temperature sensor or a magnetic field sensor for example.

Par ailleurs, on peut prévoir un certain nombre de variantes de réalisation tel qu'un affichage spécifique des valeurs mesurées en cours d'acquisition, une adaptation des échelles d'affichage dans le mode historique en fonction des extremums mesurés, une activation automatique ou manuelle du mode d'acquisition, une pluralité de zones mémoires dont chacune est dédiée à une série de mesures particulières, ou encore l'agencement d'au moins un écran à cristaux liquides sur le cadran pour compléter l'affichage analogique.Furthermore, a number of alternative embodiments can be provided, such as a specific display of the measured values during acquisition, an adaptation of the display scales in the historical mode according to the measured extremes, an automatic or manual activation. mode of acquisition, a plurality of memory areas each of which is dedicated to a series of special measurements, or the arrangement of at least one LCD screen on the dial to complete the analog display.

En outre, le dispositif électronique selon la présente invention pourrait afficher d'autres indications. En particulier, l'affichage pourrait fournir également une troisième indication représentative d'une variation dans le temps de ladite seconde indication (c'est-à-dire une indication de l'accélération de la variation dans le temps de la mesure).In addition, the electronic device according to the present invention could display other indications. In particular, the display could also provide a third indication representative of a variation in time of said second indication (i.e., an indication of the acceleration of the variation over time of the measurement).

Brève description des dessinsBrief description of the drawings

D'autres caractéristiques et avantages de la présente invention apparaîtront plus clairement à la lecture de la description détaillée qui suit, faite en référence aux dessins annexés donnés à titre d'exemples non limitatifs et dans lesquels:

  • la figure 1 représente une vue de face d'un dispositif électronique portable selon un premier mode de réalisation de la présente invention, réalisé sous la forme d'une montre de plongée disposant de moyens pour afficher la valeur d'une profondeur et la valeur de la composante verticale de la vitesse
  • la figure 2 représente un diagramme schématique général du circuit électronique du dispositif indicateur représenté sur la figure 1, et
  • la figure 3 représente un diagramme schématique sur lequel sont portées, d'une part, des courbes représentatives des mesures effectuées et des mesures enregistrées correspondant à la profondeur et, d'autre par, des courbes représentatives des calculs effectués pour déterminer la vitesse de variation de la profondeur dans deux modes de fonctionnement différents de la montre de la figure 1.
Other features and advantages of the present invention will appear more clearly on reading the detailed description which follows, made with reference to the accompanying drawings given by way of non-limiting examples and in which:
  • the figure 1 represents a front view of a portable electronic device according to a first embodiment of the present invention, made in the form of a diving watch having means for displaying the value of a depth and the value of the vertical component speed
  • the figure 2 represents a general schematic diagram of the electronic circuit of the indicator device shown in FIG. figure 1 , and
  • the figure 3 represents a schematic diagram on which are shown, on the one hand, representative curves of the measurements made and recorded measurements corresponding to the depth and, moreover, by curves representative of the calculations made to determine the speed of variation of the depth in two different modes of operation of the watch of the figure 1 .

Mode(s) de réalisation de l'inventionMode (s) of realization of the invention

La figure 1 représente un mode de réalisation préféré du dispositif électronique portable selon la présente invention, sous la forme d'une montre de plongée, très simple à la fois du point de vue structurel et du point de vue de son fonctionnement. La montre 1 se présente en apparence comme une montre de type conventionnel. Celle-ci comporte, en effet, un boîtier 2 pouvant être, par exemple, métallique à fond vissé, comprenant des cornes (non représentées) prévues pour l'attache d'un bracelet (non représenté) et contenant notamment un mouvement horloger (non représenté), un cadran 4 et fermé sur sa face supérieure par une glace, portant une lunette fixe 6 sur sa périphérie. La montre 1 comporte en outre trois organes de commande de type traditionnel, à savoir deux poussoirs 7 et 8 et une tige-couronne de mise à l'heure 9.The figure 1 represents a preferred embodiment of the portable electronic device according to the present invention, in the form of a diving watch, very simple both from the structural point of view and from the point of view of its operation. The watch 1 is in appearance as a watch of conventional type. This comprises, in fact, a housing 2 which may be, for example, metal screwed bottom, comprising horns (not shown) provided for the attachment of a bracelet (not shown) and containing in particular a watch movement (no represented), a dial 4 and closed on its upper face by an ice, carrying a fixed bezel 6 on its periphery. The watch 1 further comprises three control members of the traditional type, namely two pushers 7 and 8 and a crown-setting rod 9.

On notera que la montre de plongée 1 est préférablement munie d'une glace tactile, c'est-à-dire qu'elle est recouverte d'électrodes capacitives, en alternative ou en complément aux poussoirs 7 et 8, sans sortir du cadre de la présente invention.Note that the dive watch 1 is preferably provided with a touch screen, that is to say that it is covered with capacitive electrodes, alternatively or in addition to the pushers 7 and 8, without departing from the scope of FIG. the present invention.

La lunette 6 porte des premières graduations de profondeur 10 à échelle variable s'étendant depuis une première indication de 0 mètre, située à midi, jusqu'à une dernière indication de 50 mètres, disposée à onze heures.The telescope 6 carries first graduations of depth 10 variable scale extending from a first indication of 0 meters, located at noon, until a last indication of 50 meters, arranged at eleven o'clock.

Le cadran 4 porte des secondes graduations circulaires 12, dont l'unité est le mètre/minute, subdivisées en deux zones. La première zone 13 s'étend, dans le sens de rotation horaire, depuis la position correspondant à la graduation des 20 mètres, à huit heures, jusqu'à la position correspondant à la graduation des 30 mètres, à neuf heures. La seconde zone 14 s'étend, dans le sens de rotation horaire, depuis la fin de la première zone 13 jusqu'à la position correspondant à la graduation 0 mètre. Les graduations de la seconde zone 14 correspondent à une échelle de vitesse ascensionnelle et s'étendent entre 0m/min et 30m/min, tandis que la première zone correspond à des vitesses ascensionnelles négatives et ne comporte pas d'échelle.The dial 4 carries second circular graduations 12, the unit of which is the meter / minute, subdivided into two zones. The first zone 13 extends, in the clockwise direction, from the position corresponding to the graduation of 20 meters at eight o'clock to the position corresponding to the graduation of 30 meters at nine o'clock. The second zone 14 extends, in the clockwise direction, from the end of the first zone 13 to the position corresponding to the 0 meter graduation. The graduations of the second zone 14 correspond to an ascending speed scale and extend between 0m / min and 30m / min, while the first zone corresponds to negative climbing speeds and has no scale.

La montre 1 comporte également deux aiguilles, respectivement, d'indication des heures 16 et des minutes 17.The watch 1 also comprises two hands, respectively, for indicating the hours 16 and minutes 17.

Le cadran 4 présente en outre une fenêtre au travers de laquelle est rendu visible un écran à cristaux liquides (LCD) 18.The dial 4 furthermore has a window through which a liquid crystal display (LCD) 18 is made visible.

La montre 1 comporte des moyens techniques particuliers, qui seront rapidement décrits plus loin en relation avec la figure 2, lui permettant de fournir des indications spécifiques relatives à la pratique de la plongée. Ces moyens techniques comprennent notamment un capteur de pression prévu pour effectuer une mesure de la pression ambiante et pour renouveler cette mesure à intervalles rapprochés, et des circuits électroniques permettant de convertir les valeurs prises par cette mesure en profondeurs dans le cadre de la plongée. Ces techniques ont été décrites dans de nombreux documents de l'art antérieur et ne seront pas abordées plus en détail par la suite.The watch 1 comprises particular technical means, which will be described briefly later in connection with the figure 2 , allowing him to provide specific indications relating to the practice of diving. These technical means include a pressure sensor provided for measuring the ambient pressure and to repeat this measurement at close intervals, and electronic circuits for converting the values taken by this measurement into depths in the context of the dive. These techniques have been described in many documents of the prior art and will not be discussed in more detail later.

Ainsi, par une programmation adéquate du circuit électronique de la montre selon la présente invention, il est prévu un premier mode de fonctionnement, ou mode horaire, dans lequel les fonctions classiques sont assurées par les aiguilles des heures et des minutes. En outre, la tige-couronne 9 présente deux positions stables, une première position stable étant la position au repos dans laquelle la tige-couronne ne remplit aucune fonction. De manière conventionnelle, la seconde position stable est une position tirée par rapport à la position de repos, dans laquelle la tige-couronne permet de régler, par rotation, l'indication de l'heure fournie par les deux aiguilles 16, 17.Thus, by a suitable programming of the electronic circuit of the watch according to the present invention, there is provided a first mode of operation, or time mode, wherein the conventional functions are provided by the hour and minute hands. In addition, the crown rod 9 has two stable positions, a first stable position being the rest position in which the stem crown does not perform any function. Conventionally, the second stable position is a position pulled relative to the rest position, in which the crown rod allows to adjust, by rotation, the indication of the time provided by the two needles 16, 17.

Des moyens conventionnels sont avantageusement prévus pour effectuer un changement de mode de fonctionnement automatique, en particulier pour passer du mode horaire à un second mode de fonctionnement, appelé mode plongée, lorsque débute une plongée. Ces moyens permettent inversement de revenir au mode horaire, de manière automatique, à partir du mode plongée lorsque le plongeur, porteur de la montre, refait surface. De tels moyens sont par exemple décrits dans la demande WO 2005/096105 A1 déjà mentionnée.Conventional means are advantageously provided for effecting an automatic change of operating mode, in particular for switching from the time mode to a second operating mode, called the dive mode, when a dive starts. These means allow conversely to return to the time mode, automatically, from the dive mode when the diver, wearing the watch, resurfaced. Such means are for example described in the application WO 2005/096105 A1 already mentioned.

Une fois le mode plongée activé, les fonctions respectivement associées aux aiguilles des minutes 17 et des heures 16 sont l'affichage de la profondeur instantanée et l'affichage de la vitesse ascensionnelle.Once the dive mode is activated, the functions respectively associated with the minute hands 17 and hours 16 are the display of the instantaneous depth and the display of the rate of climb.

Bien entendu, il est possible de prévoir des moyens manuels d'activation du mode plongée de manière additionnelle ou alternative par rapport à l'activation automatique.Of course, it is possible to provide manual means for activating the dive mode additionally or alternatively with respect to the automatic activation.

Ces moyens faisant partie de l'état de la technique, ils ne seront pas abordés davantage dans la présente demande de brevet, dans la mesure où ils ne constituent pas le coeur de la présente invention et où l'homme du métier ne rencontrera pas de difficulté particulière pour les mettre en oeuvre.These means being part of the state of the art, they will not be discussed further in the present patent application, insofar as they do not constitute the heart of the present invention and where the person skilled in the art will not encounter any problem. particular difficulty to implement them.

Conformément à la présente invention, la montre de plongée 1 comporte un troisième mode de fonctionnement, appelé mode historique, préférablement activé par une action de l'utilisateur, comme par exemple au moyen d'une pression sur la tige-couronne 9 suivie d'une sélection effectuée par un contact sur la glace tactile.According to the present invention, the diving watch 1 comprises a third mode of operation, called historic mode, preferably activated by an action of the user, for example by means of a pressure on the crown rod 9 followed by a selection made by a contact on the touch screen.

Pour la mise en oeuvre du mode historique, des moyens sont prévus pour commander les aiguilles des heures 16 et des minutes 17, de telle manière qu'elles présentent un comportement représentatif du déroulement de la plongée en relation avec laquelle des données ont été mémorisées.For the implementation of the historical mode, means are provided for controlling the hands of the hours 16 and minutes 17, so that they exhibit a behavior representative of the course of the dive in relation to which data have been stored.

On peut prévoir plusieurs variantes de mise en oeuvre du mode historique. Dans la mesure où une plongée peut durer plusieurs dizaines de minutes, il est préférable de commander les aiguilles 16 et 17 de telle manière qu'elles reproduisent sensiblement leurs comportements passés respectifs avec une vitesse accélérée par rapport à la vitesse d'acquisition des mesures. L'homme du métier pourra définir des paramètres d'accélération convenant à ses propres besoins et programmer le circuit électronique de la montre en conséquence, sans sortir du cadre de la présente invention. On peut prévoir, par exemple, une division par 60 de la durée totale de la plongée à visualiser, de sorte que dix minutes de plongée sont reproduites en dix secondes dans le mode historique.Several variants of implementation of the historical mode can be provided. Since a dive can last several tens of minutes, it is preferable to control the needles 16 and 17 in such a way that they substantially reproduce their respective past behaviors with an accelerated speed with respect to the acquisition speed of the measurements. Those skilled in the art may define acceleration parameters that suit their own needs and program the electronic circuit of the watch accordingly, without departing from the scope of the present invention. For example, it is possible to divide by 60 the total duration of the dive to be displayed, so that ten minutes of diving are reproduced in ten seconds in the historical mode.

Une variante possible de mise en oeuvre de l'historique du point de vue de la vitesse de reproduction consiste à reproduire toute plongée effectuée, quelle qu'en soit la durée, dans une fenêtre de temps prédéfinie par le fabricant de la montre. La fenêtre de temps peut être définie avec une longueur fixe ou avec une longueur variable, comprise entre deux valeurs extrêmes. A titre d'exemple, on peut prévoir que la durée de l'historique est fixée à 30 secondes, le mouvement des aiguilles 16 et 17 étant alors adapté pour ramener la durée effective de la plongée à 30 secondes. On peut également prévoir, de manière alternative, que la durée de l'historique est comprise entre 15 et 30 secondes notamment en fonction de la durée effective de la plongée à reproduire.A possible variant of implementation of the history from the point of view of the speed of reproduction consists in reproducing any dive carried out, whatever the duration, in a time window predefined by the manufacturer of the watch. The time window can be defined with a fixed length or with a variable length, between two extreme values. For example, it can be provided that the duration of the history is set at 30 seconds, the movement of the needles 16 and 17 being then adapted to reduce the effective duration of the dive to 30 seconds. It is also possible, alternatively, that the duration of the history is between 15 and 30 seconds in particular depending on the effective duration of the dive to reproduce.

D'autres variantes et détails de mise en oeuvre du mode historique sont présentés, à titre non limitatif, dans la demande WO 2005/096105 A1 .Other variants and details of implementation of the historical mode are presented, without limitation, in the application WO 2005/096105 A1 .

La figure 2 est un diagramme schématique de la structure générale du circuit électronique de la montre de plongée selon la présente invention.The figure 2 is a schematic diagram of the general structure of the electronic circuit of the diving watch according to the present invention.

De manière générale, le circuit électronique de la montre comprend notamment un circuit intégré 20 comportant un circuit contrôleur 21 susceptible de gérer les fonctions horaires conventionnelles de la montre 1 comprenant, dans ce but, un circuit de division du temps et relié notamment à un résonateur 22 fournissant une base de temps. A partir de cette base de temps, des informations temporelles sont produites par le circuit contrôleur 21, notamment pour assurer les fonctions du mode horaire et les fonctionnalités relatives au mode plongée.In general, the electronic circuit of the watch includes an integrated circuit 20 including a controller circuit 21 capable of managing the conventional time functions of the watch 1 comprising, for this purpose, a time division circuit and connected in particular to a resonator 22 providing a time base. From this time base, time information is produced by the controller circuit 21, in particular to provide the functions of the time mode and the functions relating to the diving mode.

En outre, le circuit contrôleur 21 reçoit en entrée des signaux générés par un capteur de pression 23 générant des signaux électriques analogiques représentatifs de la pression environnante. Ces signaux transitent par un convertisseur analogique-numérique 24 avant d'être fournis en entrée du circuit contrôleur 21, sous la forme d'un signal digital.In addition, the controller circuit 21 receives as input signals generated by a pressure sensor 23 generating analog electrical signals representative of the surrounding pressure. These signals pass through an analog-digital converter 24 before being supplied to the input of the controller circuit 21, in the form of a digital signal.

Le capteur de pression 23 est de type conventionnel et l'homme du métier ne rencontrera pas de difficulté particulière pour en choisir un qui soit adapté à la mise en oeuvre de la présente invention.The pressure sensor 23 is of conventional type and the skilled person will not encounter any particular difficulty to choose one that is suitable for the implementation of the present invention.

Le circuit intégré 20 comporte également des zones de mémoire, notamment une première zone de mémoire 25, préférablement de type non volatile, contenant un programme permettant au circuit contrôleur 21 d'effectuer des calculs relatifs au mode plongée, comme par exemple la conversion des mesures de pression en valeurs de profondeur, en relation avec une zone de mémoire volatile non schématisée. Le choix d'une mémoire non volatile reprogrammable (Flash ou EPROM, par exemple) permet éventuellement de mettre à jour ultérieurement le programme de calcul. Le circuit intégré 20 comporte de manière préférée au moins une seconde zone de mémoire 26, également de type non volatile, dans laquelle les mesures ainsi que les résultats des calculs effectués par le circuit contrôleur 21 sont stockés périodiquement. Cette seconde zone de mémoire 26 est notamment prévue pour stocker les mesures de profondeur. Ainsi, ces informations sont consultées par le circuit contrôleur 21, en particulier lorsque la montre est dans le mode historique.The integrated circuit 20 also includes memory zones, in particular a first memory zone 25, preferably of the non-volatile type, containing a program enabling the controller circuit 21 to perform calculations relating to the diving mode, such as, for example, the conversion of the measurements. pressure in depth values, in relation to a non-schematized volatile memory zone. The choice of a non-volatile reprogrammable memory (Flash or EPROM, for example) possibly makes it possible to update the calculation program later. The integrated circuit 20 preferably comprises at least a second memory zone 26, also of the non-volatile type, in which the measurements as well as the results of the calculations carried out by the control circuit 21 are stored periodically. This second memory zone 26 is in particular designed to store depth measurements. Thus, this information is consulted by the controller circuit 21, in particular when the watch is in the historical mode.

A partir de ces signaux d'entrée respectifs, le circuit contrôleur 21 détermine la situation du plongeur à chaque instant d'une plongée. Le circuit contrôleur 21 envoie alors des signaux adaptés à un circuit de commande 27 de moyens moteurs bi-directionnels, par exemple deux moteurs bi-directionnels, de telle manière que l'aiguille des heures 16 affiche la vitesse de variation de la profondeur en regard des secondes graduations 12 du cadran. De même, le circuit contrôleur 21 produit des signaux adaptés pour le circuit de commande 27 des moyens moteurs de telle manière que l'aiguille des minutes 17 affiche la profondeur instantanée à chaque instant de la plongée, en regard des graduations 10 portées par la lunette 6 de la montre.From these respective input signals, the controller circuit 21 determines the plunger's situation at each instant of a dive. The controller circuit 21 then sends signals adapted to a circuit of control 27 bi-directional motor means, for example two bi-directional motors, so that the hour hand 16 displays the speed of variation of the depth opposite the second graduations 12 of the dial. Similarly, the control circuit 21 produces signals adapted for the control circuit 27 of the motor means in such a way that the minute hand 17 displays the instantaneous depth at each instant of the dive, opposite the graduations 10 carried by the telescope 6 of the watch.

Par ailleurs, le circuit électronique de la montre comporte des moyens conventionnels (non représentés) pour détecter des pressions effectuées par l'utilisateur sur la tige-couronne 9. Cette dernière se trouve en position A au repos et présente deux positions extrêmes B et C. La position B, instable, obtenue par une pression de l'utilisateur active une fonction du circuit contrôleur 21 modifiant le mode de fonctionnement de la montre, tel que décrit plus haut. De manière préférée, lorsque la tige-couronne 9 est enfoncée en position B à partir du mode horaire, le circuit contrôleur 21 génère des signaux d'activation de la glace tactile 4. Pendant une certaine durée prédéfinie, l'utilisateur peut alors sélectionner une fonction particulière en apposant un doigt sur une zone de la glace tactile qu'il aura sélectionnée.Furthermore, the electronic circuit of the watch comprises conventional means (not shown) for detecting pressures made by the user on the crown rod 9. The latter is in position A at rest and has two extreme positions B and C The unstable position B, obtained by user pressure activates a function of the controller circuit 21 modifying the operating mode of the watch, as described above. In a preferred manner, when the crown rod 9 is pressed into position B from the time mode, the control circuit 21 generates activation signals of the touch-sensitive glass 4. During a certain predefined duration, the user can then select a particular function by placing a finger on an area of the touch screen that he has selected.

On peut ainsi associer l'activation du mode historique à une zone prédéfinie de la glace tactile.It is thus possible to associate the activation of the historical mode with a predefined area of the touch screen.

Pour des détails techniques relatifs au fonctionnement de la glace tactile, le lecteur pourra se référer au document EP 0 838 737 A1 , publié au nom de Asulab S.A..For technical details relating to the operation of the touch screen, the reader may refer to the document EP 0 838 737 A1 , published on behalf of Asulab SA.

Bien entendu, l'homme du métier est capable de programmer comme il le souhaite le circuit intégré 20 de la montre selon la présente invention, pour prévoir des réponses respectivement adaptées aux différentes actions possibles sur la tige-couronne 9 et/ou sur la glace tactile 4.Of course, the skilled person is able to program as desired the integrated circuit 20 of the watch according to the present invention, to provide responses respectively adapted to different possible actions on the stem-crown 9 and / or on the ice touch 4.

En outre, des moyens conventionnels bien connus de l'homme du métier sont mis en oeuvre pour permettre une correction de l'heure courante indiquée par les aiguilles 16 et 17, en mode horaire, lorsque la tige-couronne 9 est tirée dans la position stable C.In addition, conventional means well known to those skilled in the art are implemented to allow a correction of the current time indicated by the needles 16 and 17, in time mode, when the crown rod 9 is pulled into the position. stable C.

Par ailleurs, le circuit intégré 20 contrôle l'affichage de l'écran à cristaux liquides 18 qui permet de compléter les indications des aiguilles des heures et des minutes par l'affichage simultané d'informations supplémentaires. Selon une variante préférée, l'affichage LCD 18 est prévu pour indiquer la durée effective d'une plongée, soit en temps réel lors du déroulement de celle-ci (mode acquisition), soit dans le mode historique. On pourrait également, par exemple, prévoir d'afficher la profondeur maximale atteinte en cours de plongée.In addition, the integrated circuit 20 controls the display of the liquid crystal display 18 which makes it possible to complete the indications of the hour and minute hands by simultaneously displaying additional information. According to a preferred variant, the LCD display 18 is provided to indicate the actual duration of a dive, either in real time during the course thereof (acquisition mode), or in the historical mode. One could also, for example, plan to display the maximum depth reached during a dive.

Des fonctionnalités supplémentaires peuvent également être prévues sur la montre de plongée 1. Leur nature et la façon d'y accéder, mis à part pour le mode historique, ne seront pas abordées en détail dans la mesure où elles n'interviennent pas directement dans la mise en oeuvre de la présente invention. Des exemples pourront être trouvés dans les demandes internationales citées plus haut, à titre illustratif non limitatif.Additional features may also be provided on the Dive Watch 1. Their nature and how to access it, except for the historical mode, will not be discussed in detail as they do not intervene directly in the dive. implementation of the present invention. Examples may be found in the international applications cited above, by way of non-limiting illustration.

Du point de vue du fonctionnement, lorsque le plongeur entre dans l'eau, la montre active le mode plongée. Les deux aiguilles 17 et 16 se positionnent initialement respectivement en regard de l'indication correspondant à 0 mètre, portée par la lunette 6 et, à neuf heures, autrement dit en regard de l'indication 0m/min portée par le cadran 4. Lorsque le plongeur descend, l'aiguille des minutes 17 se met à tourner dans le sens horaire pour indiquer la valeur de la profondeur instantanée en regard des graduations 10. Dans un même temps, l'aiguille des heures 16 se déplace, en regard des secondes graduations 12, pour indiquer la valeur de la variation de la profondeur.From the operating point of view, when the diver enters the water, the watch activates the dive mode. The two needles 17 and 16 are initially positioned respectively opposite the indication corresponding to 0 meter, carried by the telescope 6 and, at nine o'clock, in other words opposite the indication 0m / min carried by the dial 4. When the diver descends, the minute hand 17 starts to turn clockwise to indicate the value of the instantaneous depth opposite the graduations 10. At the same time, the hour hand 16 moves, next to the seconds graduations 12, to indicate the value of the variation of the depth.

On notera que dans le mode de réalisation représenté, la première zone 13 des secondes graduations 12 ne porte pas d'échelle. Ainsi, les vitesses de descente ne sont pas affichées précisément mais seulement grossièrement. Une telle réalisation est bien entendu illustrative et l'homme du métier pourra utiliser un affichage différent, adapté à ses propres besoins, sans sortir du cadre de la présente invention.It will be noted that in the embodiment shown, the first zone 13 of the second graduations 12 does not carry a scale. Thus, Downhill speeds are not displayed accurately but only roughly. Such an embodiment is of course illustrative and the skilled person can use a different display, adapted to his own needs, without departing from the scope of the present invention.

On peut avantageusement prévoir que la vitesse de variation de la profondeur est calculée sur la base d'une moyenne effectuée à partir de plusieurs valeurs successives de la profondeur. A titre d'exemple illustratif non limitatif, la vitesse de variation affichée pendant le mode plongée par l'aiguille des heures 16 peut être une moyenne glissante des trois dernières vitesses instantanées, ces dernières étant directement calculées sur la base des mesures effectuées par le capteur de pression. On comprendra qu'en mode historique, cette méthode de calcul ne peut pas être appliquée au tout premiers instant de la plongée. Dans ce cas, la vitesse initialement affichée peut être constante, de manière artificielle, pour éviter l'affichage de valeurs irréalistes, dues à l'algorithme de calcul retenu, en fonction du comportement de l'utilisateur. Il est possible de prévoir, par exemple, que la vitesse initiale affichée est de l'ordre de 10m/min pendant les premières secondes de la plongée.It can advantageously be provided that the rate of change of the depth is calculated on the basis of an average made from several successive values of the depth. By way of nonlimiting illustrative example, the variation speed displayed during the dive mode by the hour hand 16 may be a sliding average of the last three instantaneous speeds, the latter being directly calculated on the basis of the measurements made by the sensor. pressure. It will be understood that in historical mode, this method of calculation can not be applied at the very first moment of the dive. In this case, the initially displayed speed may be artificially constant, to avoid the display of unrealistic values, due to the selected calculation algorithm, depending on the behavior of the user. It is possible to provide, for example, that the initial speed displayed is of the order of 10m / min during the first seconds of the dive.

Le capteur de pression peut être alimenté pour effectuer une mesure par seconde. On peut préférablement prévoir de mémoriser chaque mesure dans une zone mémoire spécifique au moins pendant les trois premières minutes. Si la plongée est une plongée en apnée dont la durée est inférieure à trois minutes, un nombre suffisant de mesures est ainsi mémorisé pour permettre une reproduction fiable de l'historique de la plongée.The pressure sensor can be powered to perform one measurement per second. It is preferable to store each measurement in a specific memory area for at least the first three minutes. If the dive is an apnea that lasts less than three minutes, a sufficient number of measurements are stored to allow a reliable reproduction of the history of the dive.

Lorsque la plongée dure plus de trois minutes, on prévoit avantageusement une mise en mémoire des mesures à une fréquence plus faible que la fréquence de mesure du capteur de pression. Une telle disposition permet de limiter la taille de la zone mémoire nécessaire lorsque la durée de la plongée devient plus importante, sans nuire notablement à la qualité de reproduction de l'historique. De manière préférée, on prévoit l'enregistrement d'une valeur de la pression, ou de la profondeur, avec une période de l'ordre de quelques dizaines de secondes en plongée avec bouteille, par exemple, toutes les 30 secondes. En outre, il est prévu que lorsque la durée de la plongée en cours atteint 3 minutes, suivant l'exemple fourni plus haut, une grande partie des mesures mémorisées est effacée de manière à libérer des emplacements mémoire pour les mesures ultérieures. En effet, il suffit alors de ne conserver que des mesures précédemment effectuées à des intervalles de temps d'une durée correspondant à la période prévue pour l'enregistrement des mesures de plongées avec bouteille, c'est-à-dire 30 secondes suivant l'exemple mentionné précédemment.When the dive lasts more than three minutes, the measurements are advantageously stored at a frequency lower than the measurement frequency of the pressure sensor. Such an arrangement makes it possible to limit the size of the necessary memory zone when the duration of the dive becomes greater, without significantly affecting the reproduction quality of the history. Preferably, recording a value of the pressure, or depth, with a period of the order of a few tens of seconds in a bottle dive, for example, every 30 seconds. In addition, it is expected that when the duration of the current dive reaches 3 minutes, according to the example provided above, a large part of the stored measurements is erased so as to free memory locations for subsequent measurements. In fact, it suffices to keep only measurements previously made at time intervals of a duration corresponding to the period for recording the bottle diving measurements, ie 30 seconds following the previously mentioned example.

Si on considère l'exemple numérique précédent, donné à titre illustratif et non limitatif, la mémorisation des trois premières minutes d'une plongée nécessite 180 emplacements mémoire, ce nombre étant ensuite réduit à 6 lorsque la durée de la plongée franchit 3 minutes. D'autre part, lorsque la plongée se prolonge, du fait de la plus faible fréquence des mémorisations, il devient possible de mémoriser le profil de la plongée pendant une durée maximale d'une heure et demie avec un tel nombre d'emplacements mémoire, ce qui suffit à répondre aux besoins d'une large majorité de plongeurs.If we consider the previous numerical example, given by way of illustration and not limitation, memorizing the first three minutes of a dive requires 180 memory locations, this number then being reduced to 6 when the duration of the dive exceeds 3 minutes. On the other hand, when the dive is prolonged, because of the lower frequency of the memorizations, it becomes possible to memorize the profile of the dive for a maximum duration of one hour and a half with such a number of memory locations, This is enough to meet the needs of a large majority of divers.

La demande WO 2005/096105 A1 divulgue une alternative de réalisation définissant une variation plus progressive de la fréquence de mise en mémoire des résultats des mesures. L'homme du métier pourra se reporter à cette divulgation ou à toute autre méthode connue adaptée pour optimiser la gestion de la mémoire de la montre selon l'invention.Requirement WO 2005/096105 A1 discloses an alternative embodiment defining a more gradual variation of the frequency of storing the results of the measurements. The skilled person may refer to this disclosure or any other known method adapted to optimize the memory management of the watch according to the invention.

Pour limiter l'espace mémoire nécessaire au stockage des mesures de pression, la présente invention propose de limiter la quantité des données à stocker. Ainsi, il est envisagé de ne mémoriser qu'un certain pourcentage des valeurs mesurées ou telles que converties par le circuit intégré, suivant la durée de la plongée et tel que cela ressort de ce qui précède, et une valeur représentative de la période d'enregistrement de ces mesures dans la zone mémoire 26.To limit the memory space required for the storage of pressure measurements, the present invention proposes to limit the quantity of data to be stored. Thus, it is envisaged to memorize only a certain percentage of the values measured or as converted by the circuit integrated, according to the duration of the dive and as is apparent from the foregoing, and a value representative of the recording period of these measurements in the memory zone 26.

La valeur représentative de la période d'enregistrement peut être la période elle-même ou, de manière alternative, la durée totale de la plongée, le circuit intégré de la montre étant programmé pour en déduire sans ambiguïté la valeur de la période d'enregistrement correspondante.The representative value of the recording period may be the period itself or, alternatively, the total duration of the dive, the integrated circuit of the watch being programmed to unambiguously deduce the value of the recording period. corresponding.

Les valeurs de la vitesse de variation de la profondeur calculées en cours de plongée, quant à elle, ne sont pas mémorisées, ce qui permet d'économiser sensiblement la moitié de la mémoire conventionnellement utilisée dans les dispositifs dans l'art antérieur.The values of the speed of variation of the depth calculated during dive, for its part, are not memorized, which saves substantially half of the memory conventionally used in the devices in the prior art.

De manière générale, la présente invention concerne également un procédé d'affichage d'un historique pour un dispositif électronique portable du type décrit plus haut, comportant notamment un capteur d'une grandeur physique et présentant un premier mode de fonctionnement horaire, le procédé comprenant les étapes consistant à:

  1. a) effectuer, dans un premier temps, une acquisition périodique de la valeur de la grandeur physique en fonction du temps, dans un second mode de fonctionnement du dispositif électronique,
  2. b) mémoriser au moins une partie des valeurs mesurées, avec une période donnée, dans des moyens de mémorisation,
  3. c) mémoriser une valeur représentative de cette période donnée dans les moyens de mémorisation.
In general, the present invention also relates to a method for displaying a history for a portable electronic device of the type described above, comprising in particular a sensor of a physical quantity and having a first hourly mode of operation, the method comprising the steps of:
  1. a) performing, in a first step, a periodic acquisition of the value of the physical quantity as a function of time, in a second mode of operation of the electronic device,
  2. b) storing at least a portion of the measured values, with a given period, in storage means,
  3. c) storing a value representative of this given period in the storage means.

Le procédé selon l'invention se distingue des procédés de l'état de la technique par le fait qu'il comporte en outre, dans un troisième mode de fonctionnement dit mode historique, une étape ultérieure consistant à

  • d) effectuer un affichage chronologique représentatif des valeurs mémorisées de la grandeur physique en fonction du temps, au moins un premier des organes d'affichage analogique indiquant, en regard des graduations, la valeur d'une variable directement liée aux valeurs mémorisées, le second des organes d'affichage analogique étant commandé pour indiquer, en regard des graduations, la valeur d'une variable calculée à partir d'au moins deux des valeurs mémorisées.
The process according to the invention differs from the methods of the state of the art in that it also comprises, in a third mode of operation known as the historic mode, a subsequent step of
  • d) performing a representative chronological display of the stored values of the physical quantity as a function of time, at least a first of the analog display members indicating, in relation to the graduations, the value of a variable directly related to the stored values, the second of the analog display members being controlled to indicate, next to the graduations, the value of a variable calculated from at least two of the stored values.

Ainsi, lorsque le mode historique est activé, le circuit contrôleur 21 commande les moyens moteurs pour que, d'une part, l'aiguille 17 des minutes balaye les premières graduations pour afficher des valeurs de profondeur en rapport avec les mesures mémorisées. D'autre part, le circuit intégré calcule, pour chacune des valeurs mémorisées associée à une profondeur affichée, une valeur de la vitesse de variation de la profondeur.Thus, when the history mode is activated, the control circuit 21 controls the motor means so that, on the one hand, the minute hand 17 scans the first graduations to display depth values related to the stored measurements. On the other hand, the integrated circuit calculates, for each of the stored values associated with a displayed depth, a value of the speed of variation of the depth.

Au début du déroulement du mode historique, de même que dans le mode plongée, la valeur affichée pour la vitesse de variation de la profondeur est préférablement artificielle. On peut par exemple prévoir qu'elle croît tout d'abord avant d'être calculée sur la base des premières valeurs de profondeur mémorisées.At the beginning of the historical mode run, as in the dive mode, the value displayed for the rate of change of the depth is preferably artificial. For example, it can be predicted to grow first before being computed on the basis of the first stored depth values.

Après quelques instants, de l'ordre de quelques secondes, la vitesse de variation de la profondeur peut être calculée comme une moyenne glissante de la vitesse instantanée calculée entre les deux dernières profondeurs lues en mémoire et de la vitesse moyenne calculée en dernier lieu. Autrement dit, la vitesse de variation de la profondeur Vi peut être calculée par la formule suivante : V i = / 2 P i - P i - 1 T + V i - 1

Figure imgb0001
dans laquelle Pi et Pi-1 sont les valeurs respectives de la profondeur aux instants i et i-1, Vi-1 est la valeur de la vitesse de variation de la profondeur à l'instant i-1 et T est la valeur de ladite période donnée.After a few moments, on the order of a few seconds, the rate of variation of the depth can be calculated as a sliding average of the instantaneous speed calculated between the last two depths read in memory and the average speed calculated last. In other words, the rate of variation of the depth Vi can be calculated by the following formula: V i = / 2 P i - P i - 1 T + V i - 1
Figure imgb0001
 in which Pi and Pi -1 are the respective values of the depth at instants i and i -1 , Vi -1 is the value of the rate of variation of the depth at time i -1 and T is the value of said given period.

De manière alternative ou complémentaire, la vitesse Vi peut être calculée par la formule alternative suivante: V i = P i - P i - 1 T

Figure imgb0002
Alternatively or additionally, the speed Vi can be calculated by the following alternative formula: V i = P i - P i - 1 T
Figure imgb0002

Le circuit intégré peut éventuellement être programmé de telle manière que la première formule est utilisée pour les plongées de courte durée, c'est-à-dire présentant par exemple une durée inférieure à quinze minutes, tandis que la seconde formule est utilisée pour les plongées de durée supérieure.The integrated circuit may optionally be programmed in such a way that the first formula is used for short-duration dives, that is to say for example having a duration of less than fifteen minutes, while the second formula is used for dives. longer duration.

Une autre formule avantageuse pourrait être par exemple : V i = P i + 1 - P i - 1 2 ⁢ T .

Figure imgb0003
Cette formule, utilisable dans le mode historique uniquement, présente l'avantage de minimiser le décalage temporelle entre la profondeur et la vitesse ascensionnelle.Another advantageous formula could be for example: V i = P i + 1 - P i - 1 2 ⁢ T .
Figure imgb0003
 This formula, usable in the historical mode only, has the advantage of minimizing the time difference between the depth and the rate of climb.

La présente invention prévoit également la possibilité d'interrompre le déroulement du mode historique en réponse à une action d'un utilisateur sur l'un des organes de commande externes et, préférablement, de le reprendre en réponse à une nouvelle action de l'utilisateur sur l'un des organes de commande externes.The present invention also provides the possibility of interrupting the operation of the historical mode in response to an action of a user on one of the external control members and, preferably, to resume it in response to a new action by the user on one of the external control devices.

Selon la présente invention, les circuits électroniques de la montre sont en outre agencés pour opérer un saut dans le déroulement du mode historique en réponse à une action d'un utilisateur sur l'un des organes de commande externes. Ce saut dans le déroulement se traduit par une commande des organes d'affichage analogique afin que ces derniers passent de l'affichage d'une première valeur associée à une première valeur mémorisée Pi à l'affichage d'une seconde valeur associée à une seconde valeur mémorisée Pj située chronologiquement avant ou après la première valeur mémorisée Pi et espacée dans le temps de cette dernière de plus d'une fois la valeur de la période d'enregistrement. En parallèle à ce saut, le temps affiché sur le LCD 18 est modifié en conséquence.According to the present invention, the electronic circuits of the watch are further arranged to make a jump in the flow of the historical mode in response to an action of a user on one of the external control members. This leap in the unwinding results in a control of the analog display members so that the latter pass from the display of a first value associated with a first stored value Pi to the display of a second value associated with a second stored value Pj located chronologically before or after the first stored value Pi and spaced in time from the latter by more than one time value of the recording period. In parallel with this jump, the time displayed on the LCD 18 is modified accordingly.

A titre d'exemple, on peut prévoir que, lors du déroulement du mode historique, une pression sur la tige-couronne 9 entraîne une interruption du déroulement tandis qu'une pression sur le poussoir 7 provoque un saut en avant d'une durée prédéfinie dans le déroulement du mode historique et, qu'une pression sur le poussoir 8 provoque un saut en arrière de cette même durée prédéfinie dans le déroulement du mode historique.For example, it can be expected that, during the unfolding of the historic mode, a pressure on the crown rod 9 causes an interruption of the unwinding while a pressure on the pusher 7 causes a jump forward of a predefined duration in the unfolding of the historical mode and, that a pressure on the pusher 8 causes a jump back of the same predefined duration in the history mode unfolding.

Les circuits électroniques de la montre peuvent également être programmés de telle manière que des pressions prolongées sur les poussoirs entraînent l'application d'une succession de sauts dans un sens ou dans l'autre, voire une accélération dans l'application de ces sauts.The electronic circuits of the watch can also be programmed such that prolonged pressure on the pushers cause the application of a succession of jumps in one direction or the other, or an acceleration in the application of these jumps.

Lorsqu'un saut en arrière est effectué, au moins la valeur de la mesure mémorisée immédiatement avant celle qui correspond à la profondeur devant être affichée après le saut est lue dans le but de calculer une vitesse de variation de la profondeur de reprise. Dans ce cas de figure, la vitesse affichée par ce moyen au moment de la reprise du déroulement de l'historique est une vitesse instantanée.When a jump back is made, at least the value of the stored measurement immediately before that which corresponds to the depth to be displayed after the jump is read in order to calculate a speed of variation of the recovery depth. In this case, the speed displayed by this means at the time of resuming the progress of the history is an instantaneous speed.

Il est également possible de prévoir, de manière générale, et plus particulièrement dans le cas où un saut est effectué vers l'avant dans le déroulement de l'historique, qu'au moins la valeur mémorisée qui suit immédiatement la valeur à partir de laquelle le déroulement normal de l'historique est repris est lue et prise en compte dans le calcul de la vitesse de variation de la profondeur associée à la valeur de profondeur de reprise. Une telle mesure permet d'effectuer un lissage de l'affichage de la vitesse de variation de la profondeur dans le mode historique.It is also possible to provide, in general, and more particularly in the case where a jump is made forward in the course of the history, at least the stored value which immediately follows the value from which the normal progress of the history is resumed is read and taken into account in the calculation of the speed of variation of the depth associated with the value of depth of recovery. Such a measurement makes it possible to smooth the display of the speed of variation of the depth in the historical mode.

La figure 3 représente un diagramme schématique sur lequel sont portées des courbes, d'une part, de la profondeur telle qu'elle est affichée pendant une plongée (courbe 100) et telle qu'elle est reproduite dans le mode historique (courbe 200) et, d'autre part, de la vitesse de variation de la profondeur telle qu'elle est affichée pendant une plongée (courbe 300) et telle qu'elle est reproduite dans le mode historique (courbe 400).The figure 3 represents a schematic diagram on which curves are plotted, on the one hand, of the depth as displayed during a dive (curve 100) and as reproduced in the historical mode (curve 200) and, d on the other hand, the rate of variation of the depth as displayed during a dive (curve 300) and as reproduced in the historical mode (curve 400).

Etant donné que la période d'enregistrement est plus grande que la période des mesures réalisées par le capteur, il ressort de ces courbes que les valeurs mémorisées donnent lieu à des paliers de valeurs dans le déroulement de l'historique. Il faut toutefois noter que le déroulement du mode historique est effectué à vitesse accélérée, en principe, par rapport au déroulement de la plongée au cours de laquelle les mesures sont enregistrées. Ainsi, les paliers visibles sur la courbe ne sont en pratique pas discernables lors de l'affichage analogique de l'historique au moyen des aiguilles 16 et 17.Since the recording period is greater than the period of the measurements made by the sensor, it follows from these curves that the stored values give rise to levels of values in the history flow. It should be noted, however, that Historical mode is performed at accelerated speed, in principle, with respect to the course of the dive during which the measurements are recorded. Thus, the bearings visible on the curve are in practice not discernible during the analog display of history using the needles 16 and 17.

La description qui précède s'attache à décrire un mode de réalisation particulier à titre d'illustration non limitative et, l'invention n'est pas limitée, par exemple, aux séquences d'actions décrites pour activer ou désactiver l'un ou l'autre mode de fonctionnement, aux périodes de mesure ou d'enregistrement spécifiquement mentionnées, aux nombres d'organes de commande externes, aux graduations tel qu'elles ont été décrites et représentées ou encore au nombre d'aiguilles indicatrices utilisées.The foregoing description attempts to describe a particular embodiment by way of non-limiting illustration and the invention is not limited, for example, to the sequences of actions described for activating or deactivating the one or the other mode of operation, the measurement or recording periods specifically mentioned, the number of external control elements, the graduations as described and shown or the number of indicator hands used.

Bien entendu, en pratique, l'homme du métier pourra prévoir que le dispositif est adapté pour permettre l'enregistrement de plusieurs séries de données associées à des périodes d'activité, tel que la plongée, espacées dans le temps les unes des autres, sans sortir du cadre de la présente invention. Cette dernière n'est, dans ce cas, pas limitée à la méthode mise en oeuvre pour naviguer dans les différentes séries de données enregistrées dans la mémoire du dispositif.Of course, in practice, those skilled in the art can provide that the device is adapted to allow the recording of several series of data associated with periods of activity, such as diving, spaced apart in time from each other, without departing from the scope of the present invention. The latter is, in this case, not limited to the method used to navigate the different series of data stored in the device memory.

Il est également possible de prévoir que la période de lecture des valeurs mémorisées pendant le déroulement du mode historique diffère de la période d'enregistrement des mesures pendant une plongée sans sortir du cadre de l'invention.It is also possible to provide that the reading period of the values stored during the course of the historical mode differs from the measurement recording period during a dive without departing from the scope of the invention.

Comme cela a été mentionné plus haut, la présente invention n'est pas limitée à une montre de plongée. Il est possible d'appliquer le contenu de la présente divulgation pour la réalisation d'un altimètre, d'un baromètre ou encore de tout autre dispositif comportant un capteur autre qu'un capteur de pression, tel un capteur de température.As mentioned above, the present invention is not limited to a diving watch. It is possible to apply the content of the present disclosure for the realization of an altimeter, a barometer or any other device comprising a sensor other than a pressure sensor, such as a temperature sensor.

Claims (11)

  1. A portable electronic device (1) comprising a case (2) containing a clock movement with a display mounted thereon, said display comprising graduations (10, 12) and two analog display members (16, 17) arranged to face said graduations, said clock movement further comprising electronic circuits (21, 22) capable of producing time signals to be sent to control means (27) of said display, wherein said electronic circuits are arranged to be selectively placed in one or the other of a plurality of operating modes, said plurality of operating modes comprising a first mode, the time mode, in which said display is provided to indicate the time, and the electronic device (1) additionally comprising a sensor (23) provided to perform a measurement of a physical magnitude and to repeat this measurement with a given frequency, said plurality of operating modes comprising a second mode, the acquisition mode, in which the two analog display members are provided to supply a first indication and a second indication respectively, said first indication being representative of the current value of said measurement, and said second indication being representative of a variation with time of said measurement, and the electronic device further comprising memory means (25, 26) provided to record, in said acquisition mode, a succession of instantaneous values of said current value according to a given periodicity, said plurality of operating modes comprising a third mode, the history mode, in which said electronic circuits are provided to actuate said two analog display members (16, 17) so as to display in parallel within a predetermined time interval, on the basis of said succession of recorded values, two chronological value sequences, wherein a first of said sequences is directly representative of the values acquired by said measurement in said acquisition mode and the other of said sequences is calculated on the basis of said succession of recorded values and is representative of the variation with time of said measurement, characterised in that said electronic circuits (20, 21) are configured to implement a jump in the execution of said history mode in response to an action of a user using said external control element in order to control said display (16, 17), so that the latter shifts from the display of a first value associated with a first stored value Pi to the display of a second value associated with a second stored value Pj located chronologically before or after said first stored value Pi and spaced in time from the latter by more than once the value of said given periodicity.
  2. The device according to claim 1, characterised in that said memory elements comprise a random access memory (25) and a non-volatile memory (26), wherein only a value representative of said given periodicity and said succession of values, each corresponding to an instantaneous value of said current value, are stored in said non-volatile memory.
  3. The device according to claim 1 or 2, comprising an external control element (7, 8, 9), characterised in that said electronic circuits (20, 21) are configured to interrupt the execution of said history mode in response to an action of a user using said external control element.
  4. Device according to claim 3, characterised in that said electronic circuits (20, 21) are configured to resume the execution of said history mode in response to a new action of a user using said external control element (7, 8, 9).
  5. Device according to claim 1, characterised in that the value representative of the variation with time of said physical magnitude associated with said value Pj is calculated at least on the basis of the stored values Pj and Pj-1.
  6. Device according to claim 5, characterised in that said sensor is a pressure sensor (23) that enables the altitude and altitude variation rate or depth and depth variation rate to be displayed, and in that said electronic circuits (20, 21) are configured to calculate, during an execution of said history mode without intervention from the user, the altitude or depth variation rate Vi according to the formula, Vi = P i - P i - 1 T + V i - 1 / 2
    Figure imgb0006
    wherein Pi and Pi-1 are respectively values for altitude or depth at the instants i and i-1, \/i-1 is the altitude or depth variation rate at the instant i-1, and T is the value of said given period.
  7. Device according to claim 6, characterised in that said electronic circuits (20, 21) are configured to calculate the altitude or depth variation rate \/i according to the hollowing formula: V i = P i - P i - 1 T
    Figure imgb0007
    when the total duration of the measurements exceeds a predefined value.
  8. Device according to claim 5, characterised in that in said second operating mode, said value representative of the variation in the time of said physical magnitude associated with said value Pj is calculated at least from variations between the stored values Pj and
    Pj-1, Pj-1 and Pj-2 and Pj-2 and Pj-3.
  9. A method for displaying a historical record in a portable electronic device (1) comprising a case (2) containing a clock movement with graduations (10, 12,) mounted thereon, said clock movement comprising electronic circuits (20, 21) capable of producing time signals to be sent to actuation means (27) controlling at least two analog display members (16, 17), said analog display members being arranged to face said graduations (10, 12) to display the current time in a first operating mode, the time mode, and the electronic device (1) additionally comprising a sensor (23) of a physical magnitude, said method comprising the following steps:
    a) firstly performing a periodic acquisition of the value of said physical magnitude as a function of time in a second mode of operation of said electronic device,
    b) storing at least a portion of the measured values with a given periodicity in the memory elements (26),
    c) storing a value representative of said given periodicity in said memory elements,
    d) then, in a third operating mode, the history mode, controlling said actuation means to perform a chronological display representative of the stored values of the physical magnitude as a function of time, wherein at least a first (17) of said analog display members facing said graduations (10) indicates the value of a variable directly linked to said stored values, the second of said analog display members (16) facing said graduations (12) is actuated to indicate the value of a variable calculated on the basis of at least two of said stored values
    the method being characterised in that the display representative of the values of the physical magnitude stored in step d) can present a chronological discontinuity in relation to the stored values in response to a third predefined action of a usher to control said display (16, 17) so that the latter shifts from the display of a first value associated with a first stored value Pi to the display of a second value associated with a second stored value Pj located chronologically before or after said first stored value Pi and spaced in time from the latter by more than once the value of said given periodicity.
  10. Method according to claim 9, characterised in that the execution of step d) is interrupted in response to a second predefined action of a user.
  11. Method according to claim 10, characterised in that the execution of step d) is resumed in response to a third predefined action of a user.
EP07150448A 2007-12-27 2007-12-27 Portable electronic device designed to display the value of variables based on measurements taken by a sensor and having a history function Active EP2075654B1 (en)

Priority Applications (13)

Application Number Priority Date Filing Date Title
AT07150448T ATE501469T1 (en) 2007-12-27 2007-12-27 PORTABLE ELECTRONIC DEVICE FOR DISPLAYING THE VALUE OF VARIABLES BASED ON MEASUREMENTS PERFORMED USING A SENSOR INCLUDING A HISTORICAL FUNCTION
ES07150448T ES2360734T3 (en) 2007-12-27 2007-12-27 PORTABLE ELECTRONIC DEVICE INTENDED TO INDICATE THE VALUE OF VARIABLES FROM MEASUREMENTS MADE WITH A RECEIVER AND THAT PRESENTS A HISTORICAL FUNCTION.
DE602007013075T DE602007013075D1 (en) 2007-12-27 2007-12-27 A portable electronic device for displaying the value of variables based on measurements made by a sensor including a historical function
EP07150448A EP2075654B1 (en) 2007-12-27 2007-12-27 Portable electronic device designed to display the value of variables based on measurements taken by a sensor and having a history function
AU2008261168A AU2008261168C1 (en) 2007-12-27 2008-12-22 Portable electronic device having a history function and intended to display the value of variables on the basis of measurements made by a sensor
CA002647676A CA2647676A1 (en) 2007-12-27 2008-12-22 Portable electronic device having a history function and intended to display the value of variables on the basis of measurements made by a sensor
IL196140A IL196140A0 (en) 2007-12-27 2008-12-23 Portable electronic device having a history function and intended to display the value of variables on the basis of measurements made by a sensor
JP2008329181A JP5389435B2 (en) 2007-12-27 2008-12-25 A portable electronic device with a display function that displays variables based on sensor measurements
SG200809591-1A SG153791A1 (en) 2007-12-27 2008-12-26 Portable electronic device having a history function and intended to display the value of variables on the basis of measurements made by a sensor
KR1020080134287A KR101266743B1 (en) 2007-12-27 2008-12-26 Portable electronic device having a history function and intended to display the value of variables on the basis of measurements made by a sensor
CN2008102463712A CN101482731B (en) 2007-12-27 2008-12-26 Portable electronic device designed to display the value of variables and having a history function
US12/345,496 US8243553B2 (en) 2007-12-27 2008-12-29 Portable electronic device having a history function and intended to display the value of variables on the basis of measurements made by a sensor
HK09112331.4A HK1135481A1 (en) 2007-12-27 2009-12-30 Portable electronic device having a history function and operable to display the value of variables

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EP07150448A EP2075654B1 (en) 2007-12-27 2007-12-27 Portable electronic device designed to display the value of variables based on measurements taken by a sensor and having a history function

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EP2075654A1 EP2075654A1 (en) 2009-07-01
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JP (1) JP5389435B2 (en)
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AT (1) ATE501469T1 (en)
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CA (1) CA2647676A1 (en)
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ATE501469T1 (en) 2011-03-15
US8243553B2 (en) 2012-08-14
CN101482731A (en) 2009-07-15
US20090185452A1 (en) 2009-07-23
AU2008261168C1 (en) 2014-04-03
IL196140A0 (en) 2009-09-22
ES2360734T3 (en) 2011-06-08
KR101266743B1 (en) 2013-05-28
EP2075654A1 (en) 2009-07-01
JP5389435B2 (en) 2014-01-15
HK1135481A1 (en) 2010-06-04
SG153791A1 (en) 2009-07-29
AU2008261168A1 (en) 2009-07-16
KR20090071468A (en) 2009-07-01
JP2009156868A (en) 2009-07-16
CN101482731B (en) 2012-05-02
CA2647676A1 (en) 2009-06-27
DE602007013075D1 (en) 2011-04-21
AU2008261168B2 (en) 2013-11-07

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