WO2000070411A1 - Materiel electronique et son procede de commande - Google Patents

Materiel electronique et son procede de commande Download PDF

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Publication number
WO2000070411A1
WO2000070411A1 PCT/JP2000/003104 JP0003104W WO0070411A1 WO 2000070411 A1 WO2000070411 A1 WO 2000070411A1 JP 0003104 W JP0003104 W JP 0003104W WO 0070411 A1 WO0070411 A1 WO 0070411A1
Authority
WO
WIPO (PCT)
Prior art keywords
unit
electronic device
power generation
electric energy
power
Prior art date
Application number
PCT/JP2000/003104
Other languages
English (en)
Japanese (ja)
Inventor
Teruhiko Fujisawa
Makoto Okeya
Original Assignee
Seiko Epson Corporation
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Seiko Epson Corporation filed Critical Seiko Epson Corporation
Priority to EP00925666A priority Critical patent/EP1098234B1/fr
Priority to DE60032557T priority patent/DE60032557T2/de
Priority to JP2000618790A priority patent/JP3525897B2/ja
Priority to US09/743,665 priority patent/US6693851B1/en
Publication of WO2000070411A1 publication Critical patent/WO2000070411A1/fr
Priority to HK01104529A priority patent/HK1033982A1/xx

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Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04G—ELECTRONIC TIME-PIECES
    • G04G19/00—Electric power supply circuits specially adapted for use in electronic time-pieces
    • G04G19/12—Arrangements for reducing power consumption during storage
    • G—PHYSICS
    • G04—HOROLOGY
    • G04G—ELECTRONIC TIME-PIECES
    • G04G19/00—Electric power supply circuits specially adapted for use in electronic time-pieces
    • G04G19/08—Arrangements for preventing voltage drop due to overloading the power supply

Definitions

  • the present invention relates to an electronic device and a control method of the electronic device, and more particularly to an electronic device capable of switching an operation mode of the electronic device between a driving mode and a power saving mode, and a control method of the electronic device.
  • the power supply means includes a power generator having a rotating weight and a power storage means for storing electric energy generated from the power generator. (Large capacity capacitor).
  • An electronic timepiece of this type operates the timepiece for a long time without replacing batteries by displaying the time on a time display unit using electric energy discharged from a capacitor. It is.
  • An electronic timepiece with a built-in power supply means having a power generator as described above supplies stable electric energy for a long time, so that the power generator is in a non-power generation state or a non-portable state for a predetermined time or more. In such a case, these states are detected, and the operation mode of the electronic timepiece is switched from a driving mode (display mode) for displaying time to a power saving mode for not displaying time.
  • the electric energy is supplied only to the control circuit for counting the current time without displaying the time.
  • the display mode for displaying the normal time
  • electric energy is supplied to the control circuit, and in the case of an analog clock, for example, electric energy is also supplied to the drive circuit that drives the hands. ing.
  • the mode is switched from the power saving mode to the display mode, and the time display unit uses the data stored in the countdown as a basis.
  • the display is returned to the current time. For example, In analog clocks using hands, the hands were fast-forwarded to quickly return to the current time.
  • the present invention has been made in view of the above-mentioned circumstances, and in a power saving mode, when no electric energy required for the current time recovery is left in the power supply means, the electric energy consumption is reduced. It is an object of the present invention to provide an electronic device and a control method for the electronic device, which can hold electric energy of a power supply unit and can quickly restart a driven unit. Disclosure of the invention
  • a chargeable power supply unit that supplies electric energy, a drive control unit that is operated by electric energy supplied from the power supply unit, and outputs a drive signal;
  • a driven section driven and driven, and a mode switching section for switching an operation mode of the driven section between a driving mode for performing normal driving and a power saving mode based on a first condition set in advance.
  • the mode switching unit is in the power saving mode, the amount of electric energy stored in the power supply unit based on the second condition set in advance becomes smaller than the predetermined amount of electric energy.
  • An operation stop unit that stops the operation of the drive control unit when the determination is made.
  • the operation stop unit stops electric energy supplied from the power supply unit to the drive control unit when stopping the operation of the drive control unit. It is characterized by doing.
  • the drive control unit is operated by electric energy supplied from the power supply unit and outputs a control signal, and the drive control unit is supplied from the power supply unit.
  • a drive circuit that receives the control signal and outputs a drive signal to the driven unit.
  • the mode switching unit includes a drive mode. In this mode, electric energy is supplied to the control circuit and drive circuit, and in the power saving mode, electric energy is supplied only to the control circuit.
  • the power supply unit stores a power generation unit for converting external energy into electric energy, and an electric energy supplied from the power generation unit. And a power storage unit for supplying electric energy to the drive control unit.
  • the power storage unit is constituted by a secondary power supply or a capacitor.
  • a power generation state detection unit for detecting whether or not the power generation unit is in a power generation state is provided. Thus, it is characterized by whether or not the power generation unit is in a power generation state.
  • the power generation state detection unit is configured to determine whether or not the amount of electric energy output from the power generation unit exceeds the determination energy amount.
  • a power generation time determining unit that determines whether or not the duration of the electric energy exceeding the determination energy amount exceeds the determination time value by the energy amount determination unit.
  • a portable state detection unit for detecting whether or not the electronic device is in a portable state.
  • the portable state detection unit detects that the electronic device is in the non-portable state, and determines whether the electronic device is in the non-portable state.
  • the operation mode of the driven unit is switched from the power saving mode to the drive mode for a predetermined time, the electronic device is switched from the non-portable state to the portable state by the portable state detection unit. It is characterized by having.
  • a voltage detection unit for detecting a voltage of the power supply unit is provided, and a second condition is that a voltage of the power supply unit detected by the voltage detection unit is a predetermined value. Is characterized by a case where the voltage falls below the threshold voltage.
  • an electric energy content detecting unit for detecting an amount of electric energy supplied from a power supply unit
  • a second condition is that The amount of electric energy that can be supplied by the power supply unit detected by the electric energy detection unit is greater than the predetermined amount of electric energy required to return the operation mode of the driven unit from the power saving mode to the drive mode. Is also reduced.
  • a power generation state detection unit for detecting whether the power generation unit is in a power generation state is provided, and the operation of the drive control unit is further controlled by an operation stop unit.
  • An operation start unit is provided for starting the operation of the drive control unit when the third condition set in advance is satisfied when the power supply is in the stop state. This is characterized in that the unit starts power generation.
  • the start of power generation under the third condition is such that the amount of electric energy output from the power generation unit exceeds the amount of energy that can be restarted. This is characterized in that this state is continued for a predetermined time.
  • a portable state detection unit for detecting whether or not the electronic device is in a portable state is provided, and an operation stop unit operates the drive control unit.
  • An operation start unit that starts the operation of the drive control unit based on a third condition set in advance when the mobile device is in the stop state, and the operation start unit is set as a third condition by the portable state detection unit. It is characterized in that it is determined whether the electronic device has switched from the non-portable state to the portable state.
  • the switching from the non-portable state to the portable state is performed after a predetermined period of time in the portable state after switching from the non-portable state to the portable state. It is characterized in that it is performed when the time continues.
  • an external operation input unit operated by a user from outside is provided, and the driving by the mode switching unit is performed based on an operation state of the external operation input unit.
  • the mode is switched between a mode and a power saving mode.
  • an external operation input unit operated by a user from the outside is provided, and the operation of the drive control unit is stopped by the operation stop unit.
  • An operation start unit for starting operation of the drive control unit based on an operation state of the external operation input unit is provided.
  • the driven unit has a time display unit for displaying time.
  • the drive control unit switches the operation mode of the driven unit from the power saving mode to the drive mode by the mode switching unit. In this case, a current time return unit for performing a return operation for returning the time display to the current time is provided.
  • a predetermined amount of electric energy is required for returning from the power saving mode to the current time by using the current time return unit. It is characterized in that it is set to the amount of electric energy.
  • the amount of energy that can be returned can be displayed by using the time display section by starting the operation of the drive control section. It is characterized in that it is set to the minimum amount that becomes
  • the time display unit has a time display hand, and a motor for moving the hand, and the current time return unit includes In the evening, the hand movement of the hands is returned at a high hand movement speed that is higher than the normal hand movement speed.
  • the drive control unit is operated by electric energy supplied from the power supply unit and outputs a control signal, and the drive control unit is supplied from the power supply unit.
  • the operation stopping unit stops supplying electric energy to the oscillation circuit.
  • the drive control unit is operated by electric power supplied from the power supply unit and outputs a control signal, and the drive control unit is supplied from the power supply unit.
  • a driving circuit that receives the control signal and outputs the driving signal toward the driven part, the control circuit comprising: an oscillating circuit for generating a basic pulse; and an output from the oscillating circuit. And a frequency dividing circuit for dividing the basic pulse.
  • the operation stopping unit stops the operation of the oscillation circuit or the frequency dividing circuit.
  • the operation stop unit drives at least one of the oscillation circuit and the frequency divider circuit, and therefore operates more than the power supply voltage.
  • a constant voltage generating circuit for generating a low constant voltage is provided, and the supply of electric energy to the constant voltage generating circuit is stopped.
  • a chargeable power supply unit that supplies electric energy
  • a drive control unit that is operated by the electric energy supplied from the power supply unit and outputs a drive signal
  • the drive control And a driven unit driven by receiving a driving signal output from the source, the driven unit being controlled based on a first condition set in advance.
  • a mode switching step of switching the operation mode between the driving mode and the power saving mode, and an electric engine stored in the power supply unit based on the second condition set in advance when in the power saving mode by the mode switching step.
  • An operation stopping step of stopping the operation of the drive control unit when it is determined that the amount of energy is smaller than a predetermined amount of electric energy. .
  • the power supply unit stores a power generation device that converts external energy into electric energy, and an electric energy supplied from the power generation device.
  • the first condition is that the power generation state detection step It is characterized by whether or not the power generator is in a power generation state.
  • the power generation state detection step determines whether or not the amount of electric energy output from the power generation device exceeds the determination energy amount.
  • a portable state detecting step of detecting whether or not the electronic device is in a portable state When switching the operation mode of the drive unit from the drive mode to the power saving mode, the portable state detection step detects that the electronic device is in a non-portable state, and This is the case where the time during which the gamma unit is in the non-portable state continues for a predetermined time, and when the operation mode of the drive unit is switched from the power saving mode to the drive mode, the portable unit is switched from the non-portable state to the portable mode by the portable state detection step. It is characterized by switching to the state.
  • the amount of electric energy that can be supplied by the power supply unit detected in the electric energy amount detection step is a predetermined electric energy necessary for returning the operation mode of the driven unit from the power saving mode to the driving mode. It is characterized in that it is smaller than the amount.
  • the power supply unit stores a power generator for converting external energy into electric energy, and electric power supplied from the power generator.
  • a power storage device for supplying the electric energy to the drive control unit comprising a power generation state detection step of detecting whether the power generation device is in a power generation state, and further comprising a drive control unit by an operation stop step.
  • the power supply unit stores a power generating device for converting external energy into electric energy, and electric power supplied from the power generating device.
  • a power storage device for supplying the electric energy to a drive control unit comprising a portable state detection step of detecting whether the electronic device is in a portable state, and further comprising a step of stopping the operation of the drive control unit by an operation stop step.
  • an operation start step is provided for starting the operation of the drive control unit based on a third condition set in advance. Is switched from the non-carrying state to the carrying state.
  • FIG. 1 is a diagram showing a schematic configuration of an electronic timepiece according to an embodiment of the present invention.
  • FIG. 2 is a functional block diagram showing the control circuit and its peripheral configuration according to the embodiment. g.
  • FIG. 3 is a circuit diagram that embodies a power generation state detection unit.
  • FIG. 4 is an operation flowchart of the embodiment.
  • FIG. 5 is a block diagram showing a configuration of a power supply peripheral portion according to a first modification.
  • FIG. 6 is a block diagram showing a configuration of a power supply peripheral portion according to a second modification.
  • FIG. 7 is a block diagram showing a configuration of a power supply peripheral portion according to a third modification.
  • FIG. 8 is a circuit diagram specifically illustrating an oscillation circuit.
  • FIG. 9 is a flowchart showing an operation according to the fourth modification.
  • FIG. 10 is a schematic configuration diagram of the power generation detection circuit.
  • FIG. 11 is a schematic configuration diagram of the voltage detection circuit.
  • FIG. 12 is a schematic configuration diagram of a constant voltage generation circuit. BEST MODE FOR CARRYING OUT THE INVENTION
  • FIG. 1 shows a schematic configuration of an electronic timepiece 1 according to one embodiment of the present invention.
  • the electronic timepiece 1 is a wristwatch, and a user uses the belt connected to the apparatus main body by wrapping it around a wrist.
  • the electronic timepiece 1 includes a power generation unit A that generates AC power, rectifies an AC voltage output from the power generation unit A, stores a boosted voltage, and supplies electric energy to each component.
  • a power generation section B a power generation state detection section 91 for detecting the power generation state of the power generation section A (see FIG. 2), and a control circuit for controlling the entire apparatus based on the detection result output from the power generation state detection section 91 2 and 3, the second hand movement mechanism CS for driving the second hand 5 5 using the stepping motor 10, the hour and minute hand movement mechanism CHM for driving the minute hand and the hour hand using the stepping motor, and the output from the control circuit 23.
  • Second hand drive 3 OS that drives the second hand movement mechanism CS in response to a control signal received from the controller, and the hour / minute hand drive 3 OHM that drives the hour and minute hand movement mechanism CHM in response to the control signal output from the control circuit 23.
  • Time display of the operation mode of the electronic clock 1 An external input for performing an instruction operation to shift from a de calendar correcting mode, a time correction mode or forced power save mode one de described later g device 100 (see FIG. 2).
  • control circuit 23 supplies time to the control circuit 23 and the drive units 3 OS and 3 O HM (drive circuit) of the fingering mechanisms CS and CHM according to the power generation state of the power generation unit A, thereby
  • the display mode (operation mode) for performing the display and the power saving mode for stopping the power supply to the second hand movement mechanism CS and the hour / minute hand movement mechanism CHM and supplying power to the control circuit 23 only are switched. ing.
  • the control circuit 23 the user holds the electronic timepiece 1 and shakes it to generate electric power. When it is detected that the voltage exceeds a predetermined generated voltage, the control circuit 23 switches from the power saving mode to the display mode. Has become.
  • control circuit 23 will be described later using functional blocks.
  • the power generation section A includes a power generation device 40, a rotating weight 45, and a speed increasing gear 46.
  • the power generation port 43 rotates inside the power generation station 42, and the electric power induced in the power generation coil 44 connected to the power generation station 42 is output to the outside.
  • An electromagnetic induction type AC generator that can be supplied is adopted.
  • the rotating weight 45 functions as a means for transmitting kinetic energy to the power generation table 43. Then, the movement of the rotary weight 45 is transmitted to the power generation gear 43 via the speed increasing gear 46.
  • the oscillating weight 45 is configured to be able to turn inside the device by capturing the movement of the user's arm, etc., and to generate power using external energy related to the user's life.
  • the electronic timepiece 1 is driven using the electric power.
  • the power supply section B includes a limiting circuit LM for preventing an excessive voltage from being applied to a subsequent circuit, and a switching element such as a well-known Schottky diode, a silicon diode, a parasitic diode of a MOSFET built in the IC, or a transistor.
  • Q A rectifier circuit 47 such as a half-wave rectifier circuit or a full-wave rectifier circuit including active elements used, a large-capacity capacitor 48, and a step-up / step-down circuit 49 are provided.
  • the step-up / step-down circuit 49 includes a plurality of capacitors 49a, 49b, and 49c, and receives the input charging voltage Vc of the large-capacity capacitor 48 to perform multi-step boosting and stepping-down. C, and outputs a power supply voltage Vss which is a low-potential-side voltage.c.
  • the step-up / step-down circuit 49 supplies the charging voltage Vc by the control signal 0 11 output from the control circuit 23. Is supplied to the integrated circuit section 23 A of the control circuit 23, the pulse synthesis circuit 22, the second hand drive section 3 OS, and the hour / minute hand drive section 3 OHM. is there.
  • the power supply section B takes Vdd (high-potential-side voltage) as the reference potential (GND) and generates Vss (low-potential-side voltage) as the power supply voltage.
  • the stepping mode 10 used in the second hand movement mechanism CS is also called a pulse mode, a floor mode mode, or a digital mode, and is frequently used as an operation mode of a digital control device. Mode 10 is driven by a pulse signal.
  • small and lightweight stepping motors of this type have been widely used as portable electronic devices or information devices for information devices. Examples of such electronic devices include electronic watches, time switches, and chronographs.
  • the stepping motor 10 of the present embodiment includes a drive coil 11 that generates a magnetic force by a drive pulse supplied from the second hand drive unit 3 OS, a step coil 12 that is excited by the drive coil 11, and a step coil 12. It is provided with a rotor 13 which is rotated by a magnetic field excited inside the rotor 12.
  • the rotor 13 is composed of a PM type (permanent magnet rotating type) having a disk-shaped two-pole permanent magnet.
  • the stay 12 has different magnetic poles due to the magnetic force generated by the drive coil 11. But occurs in each phase (poles) 15 and 16 around Rho 13 A magnetic saturation portion 17 is provided.
  • an inner notch 18 is provided at an appropriate position on the inner circumference of the stay 12 to regulate the rotation direction of the rotor 13. To stop at an appropriate position.
  • the rotation of the lowway 13 by the stepping motor 10 is performed by the train wheel 50 composed of the intermediate second wheel 51 and the second wheel (second indicating vehicle) 52 combined with the mouth 13.
  • the second hand 55 indicates the second.
  • the stepping motor 60 used in the hour and minute hand movement mechanism CHM has almost the same configuration as the stepping motor 10.
  • the stepping motor 60 of the present embodiment includes a driving coil 61 that generates a magnetic force by a driving pulse supplied from the hour and minute driving unit 3OHM, and a step that is excited by the driving coil 61. It has a mouth 62 and a mouth 63 rotated by a magnetic field excited inside the stay 62.
  • the opening 63 is a PM type (permanent magnet rotating type) with a disk-shaped two-pole permanent magnet. Further, in the stage 62, different magnetic poles due to the magnetic force generated in the drive coil 61 are formed in the magnetic saturation portions 6 and 6 generated in the respective phases (poles) 65 and 66 around the rotor 63. 7 are provided.
  • an inner notch 68 is provided at an appropriate position on the inner circumference of the stay 62 to regulate the rotation direction of the mouth 63, thereby generating a cogging torque to appropriately rotate the rotor 63. To stop at an appropriate position.
  • the minute hand 76 is connected to the second wheel & pinion 73, and the hour hand 77 is connected to the hour wheel 75.
  • the hour and minute are displayed by each of these hands in conjunction with the rotation of the lowway 63.
  • the train wheel 70 has a transmission system for displaying a date (calendar) (not shown) (for example, when displaying the date, a cylinder intermediate wheel, a date intermediate wheel, a date wheel, Of course, it is also possible to connect a car such as j2).
  • a calendar correction train for example, the first calendar correction transmission vehicle, the second calendar correction transmission vehicle, the calendar correction vehicle, the aforementioned vehicle, etc. may be additionally provided.
  • the second hand drive section 3OS and the hour / minute hand drive section 3OHM will be described.
  • the second hand drive unit 3OS and the hour / minute hand drive unit 3OHM have the same configuration, only the second hand drive unit 3OS will be described with reference to FIG.
  • the second hand drive section 3OS supplies various drive pulses to the stepping motor 10 under the control of the control circuit 23.
  • the second hand drive unit 3 OS is composed of a P-channel transistor 33 a and an N-channel transistor 32 a connected in series, a P-channel transistor 33 b and an N-channel transistor 3
  • the second hand drive unit 3 OS includes transistors 3 3 a and 3 3 b and rotation detection resistors 35 a and 35 b connected in parallel with the transistors.
  • P-channel transistors 34a and 34b for sampling to supply chopper pulses to the resistors 35a and 35b of the circuit.
  • the second hand drive unit 3OS applies the respective timings from the control circuit 23 to the gate electrodes of these transistors 32a, 32b, 33a, 33b, 34a, and 34b.
  • control pulses with different polarities and pulse widths drive pulses with different polarities are supplied to the drive coil 11, or detection that excites induced voltages for detecting the rotation of the rotor 13 and detecting the magnetic field The pulse for the supply is supplied.
  • FIG. 2 shows the control circuit 23 and its peripheral configuration.
  • control circuit 23 includes a pulse synthesis circuit 22, a mode setting unit 90, a time information storage unit 96, a drive control circuit 24, and the like. Further, the mode setting section 90, the time information storage section 96, the drive control circuit 24, and the like are chipped by a Vss drive section 23A driven by a power supply voltage Vss, and the Vss drive section 23A The power supply voltage Vss of the buck-boost circuit 49 is supplied.
  • the pulse synthesis circuit 22 includes a constant voltage generation circuit (Fig. (Not shown) is supplied. Note that the constant voltage generation circuit uses the power supply voltage.
  • the pulse synthesizing circuit 22 includes an oscillation circuit that oscillates a reference pulse having a stable frequency using a reference oscillation source 21 such as a crystal oscillator, a frequency dividing circuit that divides the reference pulse, and a frequency dividing pulse. And a synthesizing circuit for synthesizing the reference pulse and generating pulse signals having different pulse widths and timings.
  • a constant voltage is supplied to the pulse synthesizing circuit 22.
  • the constant voltage receives a power supply voltage Vss (charging voltage Vc) output from the power supply unit B and outputs a constant voltage (see FIG. (Not shown).
  • Vss charging voltage Vc
  • the mode setting section 90 detects a power generation state detection section 91, a set value switching section 95 for switching a set value used for detection of the power generation state, and a charging voltage Vc of the large capacity capacitor 48.
  • the power generation state detection section 91 compares the electromotive voltage Vgen of the power generation device 40 with the set voltage value V0 to determine whether or not the power generation state is established.
  • the time when the power generation device 40 is in the power generation state by the detection circuit 97 of FIG. 1 is defined as the power generation continuation time Tgen, and the time Tgen is compared with the set time value TO to determine the stable power generation state.
  • a detection circuit 98 is included in the power generation continuation time Tgen.
  • FIG. 10 is an example of a circuit configuration around a power generation detection circuit when performing full-wave rectification.
  • a power generation state detection unit 91 a power generation device 40 that performs AC power generation as a peripheral circuit of the power generation state detection unit 91, and a rectifier that rectifies the AC current output from the power generation device 40.
  • a high-capacity secondary power supply 48 that accumulates by the DC current output from the rectifier circuit unit 47.
  • the power generation state detection unit 91 compares the voltage VI of the first output terminal AG 1 of the power generation device 40 with the high-potential-side terminal voltage VDD of the high-capacity secondary power supply 48, and outputs the first comparison result data DC1.
  • the first comparator C0MP1A to be output is compared with the voltage V2 of the second output terminal AG2 of the power generator 40 and the high-potential-side terminal voltage VDD of the high-capacity secondary power supply 48. Even the second comparator C0MP2A that outputs DC2 and the OR circuit OR1 that outputs as the power generation detection data DDET by taking the logical sum of the first comparison result data DC1 and the second comparison result data DC2 , And is configured.
  • the power generation state detection unit 91 When power generation is performed by the power generation device 40, the power generation state detection unit 91 generates power that can charge the high-capacity secondary power supply 48 based on the power generation state of the power generation device 40 and the operating state of the LM. It is determined whether or not there is power generation, and power generation detection data having a frequency corresponding to the power generation cycle is output to the central control circuit 93.
  • the power generation state detection circuit 91 includes a transistor 91 A and a capacitor 91 B connected in series between a signal line having a high potential side voltage Vdd and a signal line having a low potential side voltage Vss.
  • a pull-down resistor 91 C connected to both ends of the capacitor 91 B, a detection inverter 91 E connected to a connection point 91 D of the transistor 91 A and the capacitor 91 B, and a large-capacity capacitor It consists of a charging current detection circuit DET connected between the positive side of 48 and Vdd.
  • a current also flows through the charging current detection circuit DET.
  • the charging current detection circuit DET is configured by a diode, .
  • a forward voltage VF is generated.
  • the voltage VF is higher than the threshold voltage Vth of the transistor 91A, the transistor 91A is turned on and the capacitor 91B is charged.
  • the voltage VA at the connection point 91 D approaches the high potential side voltage Vdd from the low potential side voltage Vss, and this state continues to some extent by the pull-down resistor 91 C, so that the potential of the voltage VA is detected.
  • Inverter 9 1 The output switches from “L” to "H” when the E threshold is exceeded.
  • the power generation state detector 91 By configuring the power generation state detector 91 in this way, the threshold voltage Vth of the transistor 91 A, the pull-down resistor 91 C, and the threshold value of the detection inverter 91 E are appropriately selected. By doing so, a set voltage value V0 and a set time value TO described later are set, and the power generation state of the power generation device 40 is detected. Then, the power generation state detection section 91 determines that the power generation section A is in the power generation state when both of the conditions of the first detection circuit 97 and the second detection circuit 98 are satisfied.
  • the set voltage value V0 used in the first detection circuit 97 is controlled to be switched by the set value switching unit 95.
  • the set value switching unit 95 switches from the display mode to the power saving mode, Then, the value of the set voltage value V0 used for the first detection circuit 97 is changed. That is, in this example, the set voltage value Va is set in the display mode, and the set voltage value Vb is set in the power saving mode, and this relationship is set to Va ⁇ Vb.
  • the set time value TO used in the second detection circuit 98 may be switched by the set value switching unit 95.
  • the voltage detection circuit 92 is a series-connected resistor R1, R2 that divides the voltage between the high-potential-side power supply VDD and the low-potential-side power supply VSS at a predetermined division ratio to generate the detection target voltage VDET.
  • the reference voltage generator 92 A which generates a predetermined reference voltage VREF from the high-potential-side power supply VDD, compares the detection target voltage VDET, which is the voltage at the connection point between the resistors R1 and R2, with the reference voltage VREF.
  • the comparator 92B that outputs the voltage detection data DV to the central control circuit 93 and the sampling signal SP (“L” level during detection) output from the central control circuit 93 turn on at the voltage detection timing.
  • the first P-channel MOS transistor 92 C that supplies current to the resistors R 1 and R 2 and the sampling signal SP (“L” level at the time of detection) output from the central control circuit 93 turn on at voltage detection timing. Compare evening 92B Geneva And a second P-channel MOS transistor 92D that sets the comparator terminal 92B to an operating state by setting the terminal EN to an “H” level.
  • the voltage between VDD and the low-potential-side power supply VSS is divided at a predetermined division ratio to generate a detection target voltage V DET and apply it to the inverting input terminal of the comparator.
  • the enable pin EN of the comparator 92B is also at the “H” level, and the comparator 92B compares the detection target voltage VDET with the reference voltage VREF to centrally control the voltage detection data DV. This is output to the circuit 93.
  • the central control circuit 93 includes a non-power generation time measuring circuit 99 for measuring a non-power generation time Tn in which power generation is not detected by the detection circuits 97 and 98, and the non-power generation time ⁇ is a predetermined value.
  • the display mode shifts to the power saving mode if it lasts longer than the set time (first condition).
  • the power generation state detection unit 91 detects that the power generation unit ⁇ ⁇ is in the power generation state, and the charging voltage Vc of the large capacity capacitor 48 is changed from the power saving mode to the display mode. This is executed when the condition (first condition) is satisfied that sufficient electric energy is required to return to normal operation.
  • the limiter circuit is operating (ON) in the power saving mode, a short-circuit path different from the normal charging path is created, and the power generation unit A is in a short-circuit state. Even if the power generation unit A is in the power generation state, it will not be able to detect it, and it will not be possible to shift from the power saving mode to the display mode.
  • the limit circuit in the power saving mode, regardless of the power generation state of the power generation unit A, the limit circuit is turned off (open), and the power generation state detection unit 91 detects the power generation of the power generation unit A. The state can be reliably detected.
  • the power supply section B of the present embodiment includes the step-up / step-down circuit 49, the power supply voltage is stepped up using the step-up / step-down circuit 49 even when the charging voltage Vc is somewhat low, so that the hand operation mechanism CS , CHM can be driven.
  • the central control circuit 93 determines the buck-boost ratio based on the charging voltage Vc, and controls the buck-boost circuit 49.
  • the central control circuit 93 switches to a predetermined forced power saving mode, for example, when the user operates the external input device 100 or when the power generation detecting unit 91 detects a non-power generation state.
  • a power saving mode counter 101 is provided for monitoring whether or not the instruction operation of the transition of the operation is performed within a predetermined time.
  • the mode set in this way is stored in the mode storage unit 94, and the information is supplied to the drive control circuit 24, the time information storage unit 96, and the set value switching unit 95.
  • the drive control circuit 24 switches from the display mode to the power saving mode, the supply of control signals to the second hand drive unit 3 OS and the hour / minute hand drive unit 3 OH is stopped, and the second hand drive unit 3 Stop the operation of the OS and hour / minute hand drive unit 3 O HM.
  • the motors 10 and 60 stop rotating, and the time display stops.
  • the central control circuit 93 includes a power supply unit. It has a function of operation stop means for stopping supply of voltage from B to the control circuit 23 and the drive units 30S, 30OHM.
  • the time information storage unit 96 is more specifically configured by an up-down count (not shown), and is generated by the pulse synthesis circuit 22 when the display mode is switched to the power saving mode. Upon receiving the reference signal, the time measurement is started, the count value is incremented (up-counting), and the duration of the power saving mode is measured as the count value.
  • the up / down counter When the mode is switched from the power saving mode to the display mode, the up / down counter The count value is reduced (down count), and during the down count, the drive control circuit
  • the time information storage unit 96 also has a part of the function of current time return / return means for returning the redisplayed time display to the current time.
  • the drive control circuit 24 generates a drive pulse according to the mode based on various pulses output from the pulse synthesis circuit 22.
  • the supply of drive pulses is stopped.
  • a fast-forward pulse with a short pulse interval is used as a driving pulse and the second hand driving unit 3 OS and Supply to hour and minute hand drive unit 3 O HM (means for returning to current time).
  • the drive pulse at a normal pulse interval is supplied to the second hand drive unit 3OS and the hour / minute hand drive unit 3OHM.
  • Reference numeral 120 denotes a portable state detection circuit including an angular velocity sensor, a heat sensor, and the like.
  • the portable state detection circuit 120 detects whether or not the electronic timepiece 1 is wound around the user's wrist. This is to indirectly detect whether or not the power generation device 40 is in a power generation state. Further, the portable state detection circuit 120 is connected to a non-portable time measurement circuit 121 provided in the central control circuit 93, and the non-portable time measurement circuit 122 Circuit 99 measures non-portable time in much the same way.
  • the portable state detecting circuit 120 and the non-portable time measuring circuit 121 are applied instead of the power generating state detecting section 91 and the non-power generating time measuring circuit 99.
  • the control circuit 23 determines whether or not the apparatus is in the power saving mode (step S 1). In the determination in step S1, when the electronic timepiece 1 is in the power saving operation mode, (Step SI; YES) shifts to the processing of Step S5 described later.
  • step S 2 the central control circuit 93 performs It is determined whether there is a power supply voltage, that is, whether the power generation device 40 is generating power (step S2).
  • step S2 a time display process in step S10 described below is performed.
  • step S2 If it is determined in step S2 that the power generation device 40 is in the non-power generation state (step S2; NO), the non-power generation time measurement circuit 99 of the central control circuit 93 counts the non-power generation time Tn. Up (Step S3). Then, the central control circuit 93 determines whether or not the non-power generation time Tn has continued beyond a predetermined set time (step S4).
  • step S4 If it is determined in step S4 that the non-power generation time Tn has not continued beyond the predetermined set time (step S4; NO), the process returns to step S2, and from step S2 to step S2. Step 4 is repeated.
  • step S4 If it is determined in step S4 that the non-power generation time Tn has continued beyond the predetermined set time (step S4; YES), the mode is switched to the power saving mode (step S5).
  • the time information storage unit 96 counts up time information corresponding to the elapsed time in the power saving mode in order to perform a time recovery process (step S9) described later (step S6).
  • Step S7 it is determined whether or not the power supply voltage (the charging voltage Vc of the large-capacity capacitor 48 in the present embodiment) is higher than the determination voltage VI required for returning from the power saving mode to the display mode (Step S7) (Step S7) The second condition).
  • the charging voltage Vc is higher than the determination voltage VI (step 7; YES)
  • step S8 If it is determined in step S8 that there is no power generation (step S8; NO), the processing of steps S6 and S7 is repeated. If it is determined in step S8 that power generation has started (step S8; go
  • Step S10 returns from the power saving mode to the display mode, and performs a time return process to return the time based on the count value in the time information storage unit 96, and drives the hands 55, 76, and 77 as usual.
  • the time return process from the power saving mode to the display mode is a current time return process that is performed more quickly than a normal drive operation.
  • Step S7; NO the charging voltage Vc of the large-capacity capacitor 48 is set to the power saving mode.
  • step S11 When the voltage drops to a voltage that cannot return to the display mode, the supply of the charging voltage Vc supplied from the large-capacity capacitor 48 to the step-up / step-down circuit 49 is stopped, and the power supply voltage Vss output from the step-up / step-down circuit 49 Is stopped from being supplied to the Vss drive section 23 A of the control circuit 23, the pulse synthesis circuit 22 and the drive sections 3OS, 3OHM (step S11).
  • step S11 the supply of the power supply voltage Vss to the Vss drive section 23A of the control circuit 23, the pulse synthesis circuit 49, and the drive sections 3OS, 3OHM is stopped, so that the pulse synthesis circuit 2
  • the generation of the pulse signal in step 2 is stopped, and the counting up in the time information storage section 96 is stopped.
  • the control circuit 23 reduces the consumption of electric energy to zero.
  • the amount of electric energy consumption when executing the power saving mode can be cut by about 80% of the power consumption when executing the display mode. Can cut up to 5%.
  • the power generation state detection section 91 does not stop the supply of the power supply voltage Vss, and if the supply of the power supply voltage Vss is continued, the circuit operation at the time of restart is stable. It can be done.
  • step S12 whether or not the power generation device 40 has restarted power generation is monitored by the power generation state detection unit 91 (third condition), and power generation is started by the power generation state detection unit 91. It waits in this step S12 until it is detected that it has been performed.
  • step S12 when the power generation state detecting section 91 detects that the power generation has been restarted (step S12; YES), the charging voltage Vc supplied from the large-capacity capacitor 48 is supplied to the step-up / step-down circuit 49. Then, the power supply voltage Vss is supplied from the step-up / step-down circuit 49 to the Vss driving part 23 A, the pulse synthesizing circuit 22 and the driving parts 3 OS, 3 OHM of the control circuit 23, and the electronic timepiece 1 is restarted. Let it.
  • step SI 2 the voltage detection circuit 92 detects the charging voltage Vc of the large-capacity capacitor 48 and determines whether or not the voltage has the minimum voltage required for restarting. By stopping the supply of the charging voltage Vc until the voltage value reaches this value, charging of the large-capacity capacitor 48 can be hastened.
  • the charging voltage Vc of the large-capacity capacitor 48 drops to about 0.45 V
  • the large-capacitance capacitor is started after power generation is started. It was necessary to swing electronic timepiece 1 about 300 times to make 48 fully charged.
  • the judgment voltage VI is set to 1 V so that the charging voltage Vc is hardly lower than 1 V, so that the large-capacity capacitor 48 is fully charged after starting the power generation. Therefore, the electronic timepiece 1 only needs to be shaken about 100 times, and the electronic timepiece 1 can be easily restarted.
  • the electronic timepiece 1 outputs the charging voltage Vc from the large-capacity capacitor 48 to the step-up / step-down circuit 49, and
  • the charging voltage Vc of the large capacity capacitor 48 returns from the power saving mode to the display mode If the required judgment voltage VI becomes lower than the required judgment voltage VI, the supply of the charging voltage Vc output from the large-capacity capacitor 48 to the step-up / step-down circuit 47 is stopped, and the power supply section B (step-up / step-down circuit 47)
  • the supply of the power supply voltage Vss supplied to the drive unit 23A of the control circuit 23, the pulse synthesis circuit 22 and the drive units 3OS, 3OHM is stopped.
  • the charging voltage Vc of the large capacity capacitor 48 can be maintained.
  • the charging voltage Vc of the large-capacity capacitor 48 is output to the buck-boost circuit 49, so that the power supply voltage Vss is output from the buck-boost circuit 49.
  • the electronic clock 1 can be quickly restarted by supplying the Vss drive section 23 A of the control circuit 23, the pulse synthesis circuit 22 and the drive section 3 OS, 30 HM.
  • the hands 55 can be quickly activated, and If the electronic timepiece 1 is out of order, it is possible to prevent the electronic timepiece 1 from arriving early.
  • a voltage supplied to a constant voltage driving circuit 200 (for example, an oscillation circuit, a frequency dividing circuit, and the like) is changed to a constant voltage set by a constant voltage generating circuit 201.
  • a constant voltage driving circuit 200 for example, an oscillation circuit, a frequency dividing circuit, and the like
  • FIG. 12 shows a configuration diagram of the constant voltage generation circuit 201.
  • the constant current generating circuit 201 is roughly divided into a constant current source 2 20 such as a depletion transistor for generating a constant current I REF and a first current mirror circuit for generating the same current as the constant current I REF 2 2 1, the differential amplifier circuit 2 2 2 that performs differential amplification of the reference voltage VI and the generated voltage V 2 generated by the flow of the constant current I REF, and the differential amplifier circuit 2 2 2 A second current mirror circuit 2 23 for making the flowing current a constant current, and a constant voltage generating section 2 24 for generating and outputting a constant voltage VREG based on the output of the differential amplifier circuit 222. It is provided with.
  • the first current mirror circuit 221 has P-channel MOS transistors MP 1, MP 2, and MP 3 in which the source S is commonly connected to the high-potential-side power supply VDD and the gate terminal G is commonly connected,
  • the P-channel MOS transistor MP1 has a saturated connection in which the gate G and the drain D are connected.
  • the differential amplifier circuit 222 includes a P-channel MOS transistor MP having a source S connected to the drain D of the P-channel MOS transistor MP2 and a gate G connected to the drain D of the P-channel MOS transistor MP1. 4, a source S is connected to the drain D of the P-channel MOS transistor MP2, and a gate G is connected to the drain D of the P-channel MOS transistor MP3. A gate potential holding capacitor CGK connected to the drain of the channel MOS transistor.
  • the second current mirror circuit 223 includes an N-channel MOS transistor MN3 having a drain D connected to the drain D of the P-channel M ⁇ S transistor MP4 and a source S connected to the low-potential side power supply VSS, and a gate.
  • the drain D is connected to the drain D of the P-channel MOS transistor MP5 and the gate G of the N-channel MOS transistor MN3, and the source S is connected.
  • an N-channel MOS transistor MN4 connected to the low-potential power supply VSS side.
  • the drain D is connected to the gate G by saturation, the drain D is connected to the drain D of the P-channel MOS transistor MP3, and the source S is connected to the other end of the gate potential holding capacitor CGK.
  • the drain D is connected to the source of the N-channel MOS transistor MN1 and the source of the N-channel MOS transistor MN1, the source S is connected to the lower potential power supply VSS, and the gate G is connected to one end of the capacitor CGK for holding the gate potential.
  • an N-channel MOS transistor MN2 The connection point between the source S of the N-channel MOS transistor MN1 and the drain of the N-channel MOS transistor MN2 is connected to the output terminal of the constant voltage VREG. Has become.
  • the first current mirror circuit 221 generates the same current as the constant current IREF generated by the constant current source 220 (indicated by the same symbol IREF in the figure) as the source-drain current of the P-channel MOS transistor MP3. Then, the voltage is supplied to the constant voltage generator 224.
  • the differential amplifier circuit 222 performs differential amplification between the reference voltage VI and the voltage V2, and outputs the result to the constant voltage generator 224.
  • the source-drain currents of the P-channel MOS transistor MP4 and the P-channel MOS transistor MP5 are the same by the second current mirror circuit. Current value.
  • the constant voltage generator 2 2 4 generates the reference voltage V 1 and the voltage V 2 based on the output of the differential amplifier 2 2
  • V 1 V 2
  • the feedback control is performed so that
  • the threshold voltage VTP of the P-channel MOS transistor MP 1 forming the first current mirror circuit 221 and the threshold voltage VTP of the N-channel MOS transistor MN 1 of the constant voltage generator 224 A constant voltage V reg determined by the voltage VTN and the constant current IREF is generated.
  • a latch circuit 202 is connected between the large-capacitance capacitor 48 and the central control circuit 93, between the latch circuit 202, the output side of the latch circuit 202, and the middle of the high potential side Vdd line.
  • the P-channel type transistor 203 constitutes an operation stop means separately from the central control circuit 93.
  • the oscillation circuit and the frequency dividing circuit are driven by the constant voltage Vreg output from the constant voltage generating circuit 201.
  • the voltage detection circuit 92 monitors the power supply voltage (the charging voltage Vc of the large-capacity capacitor 47). Is output to the latch circuit 202. Then, the latch circuit 202 receives the signal output from the power generation state detection unit 91 and the signal output from the central control circuit 93, and outputs a signal that becomes “H” to the transistor 203. The transistor 203 is turned off. Then, the supply of the charging voltage Vc of the large capacity capacitor 48 to the central control circuit 93, the voltage detection circuit 92, the constant voltage generation circuit 201, and the like is stopped.
  • the constant voltage Vreg output in response to the charging voltage Vc is stopped, and the operation of the constant voltage driving circuit 200 is stopped.
  • the driving units 3 OS and 3 OHM are stopped, and most of the current consumption of the circuit is controlled by a constant voltage driving circuit such as an oscillation circuit for generating a reference pulse signal and a frequency dividing circuit. Since the constant voltage drive circuit 200 is consumed by the constant voltage drive circuit 200, the current consumption in the constant voltage drive circuit 200 is reduced to zero by stopping the supply of the constant voltage Vreg to the constant voltage drive circuit 200. By stopping the supply of the power supply voltage Vss to the constant voltage generation circuit 201, the current consumption of the entire circuit can be reduced to almost zero.
  • the power generation state detection unit 91 detects that the power generation unit A has started power generation and a signal that becomes “H” is input to the latch circuit 202, the transistor 203 is turned on. Then, the charging voltage Vc is supplied to the central control circuit 93, the voltage detection circuit 92, the constant voltage generation circuit 201, and the like. Since the large-capacitance capacitor 48 holds a voltage with a margin for oscillation start, the rise of the oscillation start can be accelerated. Thereby, the electronic timepiece 1 can be easily restarted.
  • the transistor 203 is connected in the middle of the line to which the high-potential-side voltage Vdd is supplied, so as to cut off the supplied current. 3 had to use a relatively large capacity. Therefore, in the second modified example, it can also be realized by configuring the operation stopping means as shown in FIG.
  • the oscillation circuit 301, the frequency divider circuit 302, and the level shifter 303 implement the constant voltage drive circuit 200 driven by the constant voltage Vreg.
  • the line having the high-potential-side voltage Vdd is referred to as the reference line a
  • the line having the low-potential-side voltage Vss is referred to as the power supply line b
  • the line having the constant-potential constant voltage Vreg is referred to as a constant-voltage line c
  • a P-channel transistor 304 is connected between the lines a and c, and a P-channel transistor 305 is connected between the line b and the constant voltage circuit 92.
  • the gate of the transistor 3 0 4 is connected to the output side of the central control circuit 9 2.
  • the operation stopping means is formed by the transistor 304 and the transistor 305.
  • the power generation state of the power generation unit ⁇ is monitored by the power generation state detection unit 91, and the power generation unit A is in the non-power generation state.
  • the signal that becomes “L” is output to the transistor 304 and the transistor 305.
  • the transistor 304 is turned on to short-circuit the reference line a and the constant voltage line c, thereby supplying the oscillation circuit 301, the frequency divider circuit 302, and the level shift circuit 303.
  • the constant voltage reg is stopped.
  • a transistor having a relatively low withstand voltage can be used as the transistor, and the supply of the charging voltage Vc is stopped, so that the current consumption in the constant voltage generating circuit 92 can be made almost zero. it can.
  • the transistor 304 was turned on.However, the transistor was connected in the middle of the constant voltage line c, the transistor was turned off, and the charging voltage was turned off. May be stopped. Further, the central control circuit 92 may incorporate the latch circuit 202 shown in the first modification. Further, in the above description, the on / off operation of the transistor 304 and the off / on operation of the transistor 305 are performed simultaneously. However, a delay circuit is provided before the gate of the transistor 304. It is better to operate the transistor 305 first. New
  • the operation stopping means including the transistors 304 and 305 is not connected, and the central control circuit 93 and the oscillation circuit are not connected. It is connected to 401 by a signal line d from which an oscillation circuit drive signal is output.
  • Both ends of the crystal oscillator 402 are connected to the reference line a, which becomes the high-potential-side voltage Vdd, via the drain capacitance 403 and the gate capacitance 404.
  • a series circuit composed of the resistor 406 is connected.
  • a P-channel transistor 407, an N-channel transistor 408, and a P-channel transistor 409 are sequentially connected from the reference line a side.
  • the gates of the transistors 407 and 408 are connected to a connection point between the gate capacitance 404 and the feedback resistor 406, and the drain of the transistor 407 and the drain of the transistor 408 are connected to each other.
  • the transistor 409 is connected to the drain resistance 405, and the gate of the transistor 409 is connected to the output side of the central control circuit 93.
  • the connection point between the drain resistance 405 and the feedback resistance 406 is connected to the frequency divider 302.
  • this oscillation circuit 401 components other than the crystal oscillator 402 are integrated by an IC, and the circuit elements other than the crystal oscillator 402, the transistor 409, and the feedback resistor 406 are used to oscillate the oscillation circuit. Is composed.
  • the electronic control unit 93 when the electronic timepiece 1 is in the display mode and the power saving mode, the electronic control unit 93 outputs the signal from the central control circuit 93 to the gate of the transistor 409 via the signal line d.
  • the oscillation circuit drive signal that is output becomes “H”, supplies a constant voltage Vreg all the time to the oscillation inverter, and directs the reference pulse to the frequency divider circuit 302 using the natural oscillation of the crystal oscillator 402. Output.
  • the power generation state of the power generation unit A is monitored by the power generation state detection unit 91 and becomes “L” when the power generation unit A is in the non-power generation state.
  • An oscillation circuit drive signal is output to the gate of the transistor 409, and the transistor 409 is turned off. Then, the supply of the constant voltage Vreg to the oscillation inverter is stopped, and the reference pulse generated from the oscillation circuit 401 is stopped. As a result, current consumption in each circuit can be reduced.
  • the central control circuit 93 outputs an oscillation circuit drive signal that becomes “H” via the signal line d to the transistor 40.
  • the constant voltage Vreg is supplied to the gate of the oscillating circuit 9, and the reference pulse is output from the oscillating circuit 401 to the frequency dividing circuit 302.
  • the judgment voltage for shifting from the power saving mode to the stop of the voltage supply is set to be lower than the judgment voltage VI (hereinafter, referred to as the first judgment voltage VI).
  • the second judgment voltage V2 (hereinafter referred to as the second judgment voltage V2) and the judgment counter value T1 at this time are used for the judgment, and the second judgment voltage V2 is displayed from the power saving mode.
  • the voltage value required for hands 55, 76, and 77 to rotate approximately 180 degrees, and the judgment count value T1 are the force value at this time.
  • step S27 when the charging voltage Vc of the large capacity capacitor 48 is equal to or lower than the first determination voltage VI (step S27: NO), that is, the voltage of the large capacity capacitor 48 is changed from the power saving mode to the display mode. If the voltage cannot be restored to the above, it is determined whether or not the value of the time-of-day clock T has exceeded the determination count value T1 (step S31). In this step S31, if the value of the count value T exceeds the count value T1, the process proceeds to step S33, and the process from step S33 is performed.
  • step S32 it is determined whether or not the charging voltage Vc is higher than the second determination voltage V2. If the charging voltage Vc is lower than the second determination voltage V2 (step S32; NO) ), That is, a large capacity capacitor 4 8 If there is not enough electric energy remaining to return the hands 55, 76, and 77, the supply of voltage to the control circuit 23 and the drive units 3 OS and 3 OHM is stopped in step S33.
  • step S34 whether or not the power generation device 40 has started power generation is monitored by the power generation state detection unit 91, and the power generation state detection unit 91 detects the start of power generation until the power generation state detection unit 91 detects that power generation has started. Wait in step S34.
  • the control circuit 23 and the drive sections 3 OS, 3 Supply it to the OHM and operate the electronic timepiece 1 (step S35).
  • step S32 determines whether the charging voltage Vc is higher than the second determination voltage V2 (step S32; YE S), that is, it is sufficient to return the hands 55, 76, and 77 to the large-capacity capacitor 48. If there is any remaining electric energy, the counting of the time is continued in step S36, and in step S37, whether or not power generation has been started is monitored via the power generation state detection unit 91. If no state is detected, the processing from step S31 is repeated.
  • step S37 If it is determined in step S37 that power has been generated, the process proceeds to step S38 to perform a process of returning to the current time.
  • the value T of the time counter becomes larger than the determination counter value T1 or the charging voltage Vc becomes higher.
  • the voltage supply is stopped.
  • the time until the supply of the charging voltage Vc is stopped can be extended, and the current time is displayed from the power saving mode when the power generation is started while the supply of the charging voltage Vc is stopped as much as possible. It returns to the display mode.
  • an electronic timepiece that displays hours, minutes, and in two modes is described as an example.
  • the present invention also relates to an electronic timepiece that displays time in one mode, in hours and minutes. Is applicable.
  • the present invention is also applicable to an electronic timepiece having a function of controlling each uU.
  • the display mode is automatically switched to the power saving mode.
  • the display mode may be forcibly switched from the display mode to the power saving mode, or the mode may be switched from the power saving mode to the stop of the voltage supply. Further, the supply of electric energy from the power supply unit B may be stopped and started in accordance with the operation status of the external input device 100.
  • the power generation state detection unit 91 monitors whether the power generation device 40 is in the power generation state or in the non-power generation state.
  • the present invention is not limited to this, and the portable state detection circuit 120 shown in FIG.
  • the power generation device 40 may be indirectly monitored as being in the non-power generation state.
  • the charging voltage Vc of the large-capacity capacitor 48 is monitored by the voltage detection circuit 92, and when the charging voltage Vc falls below the determination voltage VI, the supply of electric energy is stopped.
  • the present invention is not limited to this, and the supply of electric energy may be stopped by monitoring the power supply voltage Vss output from the step-up / step-down circuit 49.
  • the wristwatch-type electronic timepiece 1 has been described as an example.
  • the present invention is not limited to this, and other than wristwatches, calculators, mobile phones, portable personal computers, PDAs, liquid crystal televisions, It can be applied to various portable electronic devices such as portable VTRs.
  • the power generation device 40 an electromagnetic power generation device that transmits the rotational motion of the rotary weight 45 to the rotor 43 and generates an electromotive force Vgen in the output coil 44 by the rotation of the rotor 43 is adopted.
  • the present invention is not limited to this.
  • a rotating motion is generated by the restoring force of the mainspring (corresponding to external energy), W
  • a power generation device that generates electric power by photoelectric conversion using light energy (equivalent to external energy) such as sunlight may be used.
  • thermo energy corresponding to external energy
  • an electromagnetic induction type power generation device that receives floating electromagnetic waves such as broadcast and communication radio waves and uses the energy (corresponding to external energy).
  • the reference potential (G ND) is set to Vdd (high potential side voltage).
  • the reference potential (G ND) may be set to Vss (low potential side voltage).
  • the set voltage values V0 and Vgen indicate the potential difference from the detection level set on the high voltage side with respect to Vss.
  • a rechargeable power storage device such as a secondary battery or a capacitor that stores power generated by the power generation device is used as a power source.
  • a rechargeable power storage device that uses a primary battery may be used.
  • a power storage device and a primary battery may be used in combination, or a power generation device and a primary battery may be used in combination.
  • the present invention can be applied to an electronic device having a digital display device (digital display means) such as a liquid crystal panel.
  • the power supply to the digital display device is stopped, and the display is not performed.
  • a partial display can be performed so that the user does not apologize for a failure state. For example, only a mark or the like that blinks about once every two to three seconds on the display screen may be displayed.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromechanical Clocks (AREA)
  • Electric Clocks (AREA)

Abstract

Lorsqu'un compteur de temps électronique se trouve en mode économiseur d'énergie, avec arrêt de l'indication du moment présent, on décide si la tension de charge fournie par un gros condensateur (48) est supérieure ou inférieure à une tension de référence déterminée. Dans le premier cas, c'est que le gros condensateur a emmagasiné l'énergie nécessaire pour repasser du mode économiseur au mode d'affichage. Il y a fourniture d'énergie et retour à l'indication du moment présent. Dans le second cas, c'est-à-dire lorsque la tension de charge est inférieure à la tension de référence, le circuit de commande cesse d'être alimenté, ce qui évite de gaspiller l'énergie électrique précieuse emmagasinée dans le condensateur. Ce système garantit que le compteur de temps électronique se remet rapidement en marche lorsque du courant commence a être produit.
PCT/JP2000/003104 1999-05-14 2000-05-15 Materiel electronique et son procede de commande WO2000070411A1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP00925666A EP1098234B1 (fr) 1999-05-14 2000-05-15 Dispositif électronique et procédé de contrôle pour ce dispositif
DE60032557T DE60032557T2 (de) 1999-05-14 2000-05-15 Elektronische einrichtung und verfahren zu ihrer steuerung
JP2000618790A JP3525897B2 (ja) 1999-05-14 2000-05-15 電子機器および電子機器の制御方法
US09/743,665 US6693851B1 (en) 1999-05-14 2000-05-15 Electronic device and control method for electronic device
HK01104529A HK1033982A1 (en) 1999-05-14 2001-06-29 Electronic equipment and method of controlling thesame

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP11/134761 1999-05-14
JP13476199 1999-05-14

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WO2000070411A1 true WO2000070411A1 (fr) 2000-11-23

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JP (1) JP3525897B2 (fr)
CN (1) CN1145087C (fr)
DE (1) DE60032557T2 (fr)
HK (1) HK1033982A1 (fr)
WO (1) WO2000070411A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010276611A (ja) * 2010-07-26 2010-12-09 Citizen Holdings Co Ltd ソーラセル付電子時計
JP2019174454A (ja) * 2018-03-27 2019-10-10 シチズン時計株式会社 電子時計

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001098843A1 (fr) * 2000-06-21 2001-12-27 Citizen Watch Co.,Ltd. Horloge electronique generatrice d'energie et son procede de commande
US8552588B2 (en) * 2009-11-05 2013-10-08 Tai-Her Yang Battery charging coaction and output system with current limit supply
JP5260706B2 (ja) 2011-06-24 2013-08-14 レノボ・シンガポール・プライベート・リミテッド 計時回路を備える携帯式電子機器の電力システム
JP6054755B2 (ja) * 2013-01-23 2016-12-27 エスアイアイ・セミコンダクタ株式会社 定電圧回路及びアナログ電子時計
CN104978002A (zh) * 2014-04-08 2015-10-14 鸿富锦精密工业(武汉)有限公司 电源控制***及方法
US11656580B2 (en) 2018-03-27 2023-05-23 Citizen Watch Co., Ltd. Electronic watch
EP3712718A1 (fr) * 2019-03-22 2020-09-23 ETA SA Manufacture Horlogère Suisse Piece d'horlogerie electroniqe a detecteur de mouvement

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2037025A (en) * 1978-11-06 1980-07-02 Seiko Instr & Electronics Analog electronic timepiece
JPH09304555A (ja) * 1996-05-15 1997-11-28 Seiko Epson Corp 電子時計
JPH11223682A (ja) * 1997-11-20 1999-08-17 Seiko Epson Corp 電子機器、電子機器の制御方法、計時装置、および計時装置の制御方法

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH609520B (fr) * 1976-07-16 Ebauches Electroniques Sa Montre electronique pourvue d'un circuit de declenchement pour reduire la consommation d'energie lors du stockage.
WO1998006013A1 (fr) * 1996-08-01 1998-02-12 Citizen Watch Co., Ltd. Montre electronique

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2037025A (en) * 1978-11-06 1980-07-02 Seiko Instr & Electronics Analog electronic timepiece
JPH09304555A (ja) * 1996-05-15 1997-11-28 Seiko Epson Corp 電子時計
JPH11223682A (ja) * 1997-11-20 1999-08-17 Seiko Epson Corp 電子機器、電子機器の制御方法、計時装置、および計時装置の制御方法

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP1098234A4 *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010276611A (ja) * 2010-07-26 2010-12-09 Citizen Holdings Co Ltd ソーラセル付電子時計
JP2019174454A (ja) * 2018-03-27 2019-10-10 シチズン時計株式会社 電子時計
JP7203642B2 (ja) 2018-03-27 2023-01-13 シチズン時計株式会社 電子時計

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DE60032557D1 (de) 2007-02-08
CN1304499A (zh) 2001-07-18
HK1033982A1 (en) 2001-10-05
EP1098234B1 (fr) 2006-12-27
EP1098234A1 (fr) 2001-05-09
CN1145087C (zh) 2004-04-07
EP1098234A4 (fr) 2005-05-11
DE60032557T2 (de) 2007-10-04
JP3525897B2 (ja) 2004-05-10

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