CN102375534B - Electronic device and related control method thereof - Google Patents
Electronic device and related control method thereof Download PDFInfo
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- CN102375534B CN102375534B CN201010260606.0A CN201010260606A CN102375534B CN 102375534 B CN102375534 B CN 102375534B CN 201010260606 A CN201010260606 A CN 201010260606A CN 102375534 B CN102375534 B CN 102375534B
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Abstract
The invention discloses an electronic device and a related control method thereof. The electronic device comprises a sensing unit, a charging and discharging circuit and a processing circuit. The processing circuit comprises a control unit, a detection unit, a judging unit and an executing unit. The control unit provides periodical pulse to the sensing unit and the charging and discharging circuit, so as to periodically charge and discharge according to the periodical pulse and outputting a sensing voltage. The sensing unit detects the sensing voltage and determines a charging time according to the sensing voltage, wherein the charging time is the time required by the sensing volute to reach a preset voltage. The sensing unit has a virtual capacitor, and when the sensing unit receives the touch of an article. The capacitance of the virtual capacitor will change. The judging unit determines if to trigger an interrupt request according to the charging time. When receiving the interruption request, the execution unit can execute a specific application function.
Description
Technical field
The present invention relates to a kind of electronic installation and corresponding control methods thereof, relate in particular to a kind of by a sensing cell be arranged near voice output (for example, loudspeaker or receiver) position come sensing whether to receive user to touch brought electric capacitance change, use the electronic installation and the corresponding control methods thereof that replace contiguous sensor originally.
Background technology
In various consumption electronic products market now, the portable electric devices such as personal digital assistant (PDA), mobile phone (mobile Phone) and PDA mobile phone have been widely used the interface tool that contact panel (touch panel) is linked up as its data all.Yet, with regard to mobile phone, when user converses with mobile phone, often can be because being too near to for people's ear or people's face the touch controllable function that contact panel causes accident touch on touch control panel.Thus, often can cause user's puzzlement because of false touch action.
The puzzlement causing because of false touch in order to reduce user; at present portable electric device on the market can utilize a contiguous sensor (proximity sensor) to detect the distance of the objects such as portable electric device and people's ear, people's face conventionally, reaches button effect and automatically closes contact panel and/or the relevant control function such as display panel is backlight to carry out.Yet contiguous sensor has the too small problem of sensing range technically at present, so there are many restrictions on the position of putting.In addition, contiguous sensor is an optical element, the essential printing opacity in its surface, so the color of overlay (cover plate) need to consider especially, this can make the colour planning of panel of mobile phone inconsistent and have influence on attractive in appearance.Moreover the unit price of contiguous sensor is high, will cause the burden in manufacturing cost for manufacturer.
Therefore, how promoting convenience, the increase more additional function of portable electric device of portable electric device and save cost, is also one of the important topic in the design field.
Summary of the invention
Therefore, one of object of the present invention is to propose a kind of electronic installation and corresponding control methods thereof, to solve the above problems.
Therefore, one of object of the present invention is to propose a kind of electronic installation, and it utilizes sensing cell arrange in pairs or groups simple charge-discharge circuit and treatment circuit, replaces contiguous sensor originally to reach screen closing function.
The present invention discloses a kind of electronic installation, includes: sensing cell, charge-discharge circuit and treatment circuit.Whether sensing cell receives touching of an object in order to sensing.Charge-discharge circuit is coupled to sensing cell, and wherein charge-discharge circuit and sensing cell carry out periodically charge and discharge according to recurrent pulses, and exports a sensing voltage.Treatment circuit is coupled to sensing cell and charge-discharge circuit, and treatment circuit includes control module, detecting unit, judging unit and performance element.Control module provides these recurrent pulses to sensing cell and charge-discharge circuit.Detecting unit is used for detecting sensing voltage, and decides a duration of charging according to sensing voltage, and wherein the duration of charging is the time that sensing voltage arrives a predetermined voltage.This sensing cell has a simulated capacitance, and when this sensing cell receives touching of this object, the electric capacity of this simulated capacitance can change.Judging unit is coupled to detecting unit, is used for determining whether triggering an interrupt request according to the duration of charging.Performance element is coupled to judging unit, is used for when receiving interrupt request, carries out an application specific functionality.
The present invention separately discloses the method for the pattern of a kind of control one electronic installation, and this electronic installation includes the sensing cell touching and a charge-discharge circuit that whether receives an object in order to sensing.The method includes following steps: provide recurrent pulses to this sensing cell and this charge-discharge circuit; According to these recurrent pulses, charge-discharge circuit and this sensing cell are carried out to periodically charge and discharge, to export a sensing voltage; Detect this sensing voltage, and decide a duration of charging according to this sensing voltage, wherein this duration of charging arrives time of a predetermined voltage for this sensing voltage; Determine whether triggering an interrupt request according to this duration of charging; And when receiving this interrupt request, carry out an application specific functionality.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the first embodiment of electronic installation of the present invention.
Fig. 2 is the schematic diagram of the second embodiment of electronic installation of the present invention.
Fig. 3 is the functional block diagram of one of the electronic installation shown in Fig. 1 or Fig. 2 exemplary embodiment.
Fig. 4 is the signal waveforms of the detected sensing voltage of the detecting unit shown in Fig. 3 in discharge regime and in the charging stage (comprise do not receive user touch and receive user and touch in the situation that).
Fig. 5 is the process flow diagram of an example operation of the method for the present invention's pattern of controlling an electronic installation.
[main element symbol description]
100,200 electronic installations
110 sensing cells
120,220 overlays
130,230 shells
140 voice outputs
132 spatial accommodations
222 potholes
DA1, DA2 specific region
310 charge-discharge circuits
320 treatment circuits
330 control modules
340 detecting units
350 judging units
360 performance elements
Ccharge charging capacitor
Cvir simulated capacitance
Spp recurrent pulses
Vs sensing voltage
The tc duration of charging
TH critical value
INT interrupt request
AP application specific functionality
S1, S2, S3 curve
V
dpredetermined voltage
T1, t2 time
500～522 steps
Embodiment
Please refer to Fig. 1, Fig. 1 is the schematic diagram of the first embodiment of electronic installation 100 of the present invention.As shown in Figure 1; electronic installation 100 includes a sensing cell 110, an overlay (cover plate) 120, one shell (housing) 130 and a voice output 140; wherein voice output 140 is used for exporting an audio signals; can be realized by a loudspeaker or a receiver (receiver); overlay 120 is arranged on the display panel of electronic installation 100 or the outermost layer of contact panel (scheming not shown), is used for protecting electronic installation 100.In the present embodiment, shell 130 has a spatial accommodation 132 and holds voice output 140, and sensing cell 110 is by a conductive layer, for example, one sheet metal (as: copper foil) or a conductive material layer carry out practical operation, and this conductive layer can attach or embedded mode to be arranged on the specific region DA1 of inside surface of shell 130 upper, and specific region DA1 next-door neighbour spatial accommodation 132, as shown in Figure 1.Thus, just the mode that sensing cell 110 can be by direct contact or the mode of induction indirectly come sensing whether to receive a user, as touching of: shaping claviforms such as people's ear, people's face.
Please refer to Fig. 2, Fig. 2 is the schematic diagram of the second embodiment of electronic installation 200 of the present invention.In the present embodiment, electronic installation 200 includes a sensing cell 110, an overlay 220, a shell 230 and a voice output 140.Framework and the electronic installation shown in Fig. 1 100 of the electronic installation 200 in Fig. 2 are similar, both differences are that the overlay 220 of electronic installation 200 has a pothole 222 and holds voice output 140 to form a spatial accommodation, and sensing cell 110 is also by a conductive layer, for example, one sheet metal (as: copper foil) or a conductive material layer carry out practical operation, but this conductive layer can attach or embedded mode is arranged on the specific region DA2 of inside surface of overlay 220, and specific region DA2 is close to pothole 222, as shown in Figure 2.In addition, because sensing cell 110 is not optical element, therefore can on the specific region DA2 of sensing cell 110, be coated with the coloured material of one deck arranging, consistent and meet demand attractive in appearance in the hope of the surface color design of electronic installation 200.Thus, just the mode that sensing cell 110 can be by direct contact or the mode of induction indirectly come sensing whether to receive a user, as touching of: shaping claviforms such as people's ear, people's face.
By Fig. 1 and Fig. 2, can be learnt, the setting position of sensing cell 110 does not limit to, but to be arranged on, near people's ear, to answer the position at place better, that is with near the putting position of voice output 140 for example, to the optimal setting positions (, specific region DA1, DA2) that extends to sensing cell 110 all around.In addition, the size of sensing cell 110 and shape are not restrictive condition of the present invention.
Please also refer to Fig. 3 and Fig. 1 (or Fig. 2), Fig. 3 is the functional block diagram of an exemplary embodiment of the electronic installation 100/200 shown in Fig. 1 or Fig. 2.As shown in Figure 3, electronic installation 100/200 includes (but being not limited to) sensing cell 110, a charge-discharge circuit 310 and a treatment circuit 320.Charge-discharge circuit 310 is coupled to sensing cell 110, and wherein charge-discharge circuit 310 and sensing cell 110 carry out periodically charge and discharge according to recurrent pulses (periodic pulse) Spp, and export a sensing voltage Vs.Treatment circuit 320 is coupled to sensing cell 110 and charge-discharge circuit 310, and treatment circuit 320 includes control module 330, detecting unit 340, judging unit 350 and performance element 360.Wherein, control module 330 provides recurrent pulses Spp to sensing cell 110 and charge-discharge circuit 310.340 of detecting units are used for detecting sensing voltage Vs, and decide a duration of charging tc according to sensing voltage Vs, and duration of charging tc herein means that sensing voltage Vs arrives a predetermined voltage V
d(for example, 5 volts) the needed time.350 of judging units are coupled to detecting unit 340, are used for determining whether triggering an interrupt request INT according to duration of charging tc.Finally, performance element 360 is coupled to judging unit 350, is used for when receiving interrupt request INT, carries out an application specific functionality AP.
In the present embodiment, charge-discharge circuit 310 is realized by a charging capacitor Ccharge, but the present invention is not limited thereto.In other embodiment, also can adopt the charging capacitor resistive element of arranging in pairs or groups to realize charge-discharge circuit 310.Knowing this skill person should understand, and without prejudice to spirit of the present invention in the situation that, the various variations of the element of charge-discharge circuit 310 are all feasible.
Please note, above-mentioned electronic installation 100/200 can be a mobile phone (mobile phone), a personal digital assistant (personal digital assistant, PDA), a PDA-phone (PDA phone), an intelligent mobile phone (smart phone), but the present invention is not limited thereto, also can be the electronic apparatus of other kind.In addition, above-mentioned treatment circuit 320 can be realized by a CPU (central processing unit) or a microprocessor, and the GPIO pin of can arranging in pairs or groups receives and detect sensing voltage Vs, but the present invention is not limited thereto.Moreover, above-mentioned application specific functionality AP can be a contact panel and/or display panel closing function or its relevant control function backlight, so knowing this skill person should understand, and the various variations of application specific functionality AP are all feasible, visual actual demand and designing.
It should be noted that sensing cell 110 has a simulated capacitance Cvir, when sensing cell 110 does not receive a user and touches, the simulated capacitance Cvir of sensing cell 110 has one first electric capacity C1; And when sensing cell 110 receives a user and touches, simulated capacitance Cvir has one second electric capacity C2, and the second electric capacity C2 is greater than the first electric capacity C1, that is to say that the electric capacity of simulated capacitance Cvir can change.In other words, when sensing cell 110 does not receive a user and touches, the equivalent electric capacity that now charge-discharge circuit 310 and sensing cell 110 form can equal Ccharge+C1; And when sensing cell 110 receives a user and touches, the equivalent electric capacity that now charge-discharge circuit 310 and sensing cell 110 form can equal Ccharge+C2 (and C2 > C1).Because equivalent electric capacity has changed, sensing voltage Vs arrives predetermined voltage V
dneeded duration of charging tc also can change, so judging unit 350 just can judge by the size of duration of charging tc whether sensing cell 110 receives a user and touch, to determine whether will trigger interrupt request INT.
Please also refer to Fig. 4 and Fig. 3, Fig. 4 is the signal waveforms of the detected sensing voltage Vs of the detecting unit 340 shown in Fig. 3 in discharge regime and in the charging stage (comprise do not receive user touch and receive user and touch in the situation that).First, first carry out an initialization action, therefore, in discharge regime, first the conductive layer of sensing cell 110 is drained electric charge by discharge path, as shown in the first curve S 1 in Fig. 4.Then, charging stage will describe in two kinds of situation: in the situation that user's ear or people's face do not touch sensing cell 110 on electronic installation 100/200 (that is, not receiving user touches), because control module 330 can provide recurrent pulses Spp to sensing cell 110 and charge-discharge circuit 310, make it carry out periodically charge and discharge, and the equivalent electric capacity system that now charge-discharge circuit 310 and sensing cell 110 form equals Ccharge+C1, therefore the detected sensing voltage Vs of detecting unit 340 can just charge and arrive predetermined potential V within a period of time t1
d, as shown in the second curve S 2 in Fig. 4.And in the situation that user's ear or people's face touch sensing cell 110 on electronic installation 100/200 (that is, receiving user touches), can change because of user's ear or touching of people's face equivalent electric capacity that charge-discharge circuit 310 and sensing cell 110 form (now, equivalent electric capacity equals Ccharge+C2), therefore will change sensing voltage Vs and arrive predetermined voltage V
dduration of charging tc.Thus, the detected sensing voltage Vs of detecting unit 340 just needs can charge after t2 after a while and arrives predetermined potential V
d, as shown in the 3rd curve S 3 in Fig. 4.
In brief, in the situation that user's ear or people's face do not touch the sensing cell 110 on electronic installation 100/200, the detected sensing voltage Vs of detecting unit 340 can just charge and arrive predetermined potential V within a period of time t1
dnow judging unit 350 (can be realized by a comparer) can compare duration of charging tc and a critical value TH, because duration of charging tc is not more than critical value TH (tc=t1 < TH), therefore judging unit 350 can't trigger interrupt request INT, and now performance element 360 can't be carried out application specific functionality AP; And in the situation that user's ear or people's face touch the sensing cell 110 on electronic installation 100/200, the detected sensing voltage Vs of detecting unit 340 can just can charge and arrive predetermined potential V after a period of time t2
dnow judging unit 350 can compare duration of charging tc and critical value TH equally, because duration of charging tc is greater than critical value TH (tc=t2 > TH), therefore judging unit 350 can trigger interrupt request INT, and then performance element 360 can be carried out application specific functionality AP.Thus, electronic installation 100/200 just can utilize the sensing cell 110 simple charge-discharge circuit 310 of collocation and treatment circuits 320, reach automatically close contact panel and/or display panel backlight (that is, execution application specific functionality AP) object, and and then promote the additional function of electronic installation 100/200 and bring user more convenience.
Please refer to Fig. 5, Fig. 5 is the process flow diagram of an example operation of the method for the present invention's pattern of controlling an electronic installation, and this electronic installation includes a sensing cell and a charge-discharge circuit.The method comprises following step (if note that and can obtain roughly the same result, the following step non-limiting will execution according to the order shown in Fig. 5):
Step 500: start.
Step 502: provide recurrent pulses to this sensing cell and this charge-discharge circuit.
Step 504: according to these recurrent pulses, charge-discharge circuit and this sensing cell are carried out to periodically charge and discharge, to export a sensing voltage.
Step 506: detect this sensing voltage, and decide a duration of charging according to this sensing voltage, wherein this duration of charging arrives time of a predetermined voltage for this sensing voltage.
Step 508: determine whether triggering an interrupt request according to this duration of charging.When the duration of charging is greater than this critical value, execution step 520; Otherwise, execution step 510.
Step 510: do not trigger interrupt request.
Step 520: trigger interrupt request.
Step 522: when receiving this interrupt request, carry out an application specific functionality.
About each step shown in Fig. 5 please arrange in pairs or groups each element shown in Fig. 1 (or Fig. 2), Fig. 3 and the signal waveforms of Fig. 4, can understand between each element and how to operate, and for description for purpose of brevity, therefore the operation of each step just repeats no more in Fig. 5.Wherein, step 510 represents that the sensing cell 110 of electronic installation 100/200 does not receive the situation that a user touches, and the step 520～522 sensing cell 110 of expression electronic installation 100/200 receive the situation that a user touches.
The step of above-mentioned flow process only for the present invention for feasible embodiment, and unrestricted restrictive condition of the present invention, and without prejudice to spirit of the present invention in the situation that, the method can also comprise other intermediate steps or several steps can be merged into one step, to do suitable variation.
Above-described embodiment is only used for illustrating technical characterictic of the present invention, is not used for limiting to scope of the present invention.As from the foregoing, the invention provides a kind of electronic installation and corresponding control methods thereof.By a sensing cell (can carry out practical operation by the conductive layer being arranged near people's ear place of answering) arrange in pairs or groups simple charge-discharge circuit and treatment circuit, come sensing user's ear or people's face whether near electronic installation (that is, whether receiving a user touches), thus, just can replace contiguous sensor originally and automatically close contact panel and/or display panel object backlight to reach.Because the shape size of conductive material is not limited, the area that therefore can increase conductive layer promotes its sensing range, with the shortcoming of avoiding sensing.In addition, because sensing cell is not optical element, therefore can on the specific region of sensing cell, be coated with the coloured material of one deck arranging, consistent and meet demand attractive in appearance in the hope of the surface color design of electronic installation.And cheap due to conductive material such as Copper Foils, therefore can further save the manufacturing cost of electronic installation and can give its more additional function, to bring user more convenience.
The foregoing is only the preferred embodiments of the present invention, all equalizations of doing according to the claims in the present invention book change and modify, and all should belong to covering scope of the present invention.
Claims (11)
1. an electronic installation, includes:
Whether one sensing cell, receive touching of an object in order to sensing, and wherein this sensing cell has a simulated capacitance, and when this sensing cell receives touching of this object, the electric capacity of this simulated capacitance can change;
One charge-discharge circuit, is coupled to this sensing cell, and wherein this charge-discharge circuit and this sensing cell carry out periodically charge and discharge according to recurrent pulses, and exports a sensing voltage; And
One treatment circuit, is coupled to this sensing cell and this charge-discharge circuit, and this treatment circuit includes:
One control module, is used to provide these recurrent pulses to this sensing cell and this charge-discharge circuit;
One detecting unit, is used for detecting this sensing voltage, and decides a duration of charging according to this sensing voltage, and wherein this duration of charging arrives time of a predetermined voltage for this sensing voltage;
One judging unit, is coupled to this detecting unit, is used for determining whether triggering an interrupt request according to this duration of charging; And
One performance element, is coupled to this judging unit, is used for when receiving this interrupt request, carries out an application specific functionality.
2. electronic installation as claimed in claim 1, wherein this charge-discharge circuit includes a charging capacitor.
3. electronic installation as claimed in claim 1, wherein this judging unit is that this duration of charging and a critical value are compared; When this duration of charging is greater than this critical value, this judging unit triggers this interrupt request; And when this duration of charging is not more than this critical value, this judging unit does not trigger this interrupt request.
4. electronic installation as claimed in claim 1, also comprises a display panel and a contact panel, and wherein this application specific functionality is the closing function backlight of this contact panel or this display panel.
5. electronic installation as claimed in claim 1, it also comprises:
One voice output; And
One shell, has a spatial accommodation and holds this voice output;
Wherein, this sensing cell is a conductive layer, and is arranged on the specific region of inside surface of this shell, and this specific region is close to this spatial accommodation.
6. electronic installation as claimed in claim 1, it also comprises:
One voice output; And
One overlay, has a pothole and holds this voice output to form a spatial accommodation;
Wherein, this sensing cell is a conductive layer, and is arranged on the specific region of inside surface of this overlay, and this specific region is close to this pothole.
7. electronic installation as claimed in claim 1, wherein this sensing cell is a sheet metal.
8. electronic installation as claimed in claim 1, it is a mobile phone, a personal digital assistant, a PDA-phone or an intelligent mobile phone.
9. control a method for an electronic installation, this electronic installation includes the sensing cell touching and a charge-discharge circuit that whether receives an object in order to sensing, and the method includes following steps:
Provide recurrent pulses to this sensing cell and this charge-discharge circuit;
According to these recurrent pulses, charge-discharge circuit and this sensing cell are carried out to periodically charge and discharge, to export a sensing voltage;
Detect this sensing voltage, and decide a duration of charging according to this sensing voltage, wherein this duration of charging arrives time of a predetermined voltage for this sensing voltage;
Determine whether triggering an interrupt request according to this duration of charging; And
When receiving this interrupt request, carry out an application specific functionality.
10. method as claimed in claim 9, wherein determines whether that according to this duration of charging the step that triggers this interrupt request includes:
This duration of charging and a critical value are compared;
When this duration of charging is greater than this critical value, trigger this interrupt request; And
When this duration of charging is not more than this critical value, do not trigger this interrupt request.
11. methods as claimed in claim 9, wherein this application specific functionality is the closing function backlight of a contact panel or a display panel.
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| CN201010260606.0A CN102375534B (en) | 2010-08-19 | 2010-08-19 | Electronic device and related control method thereof |
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| CN201010260606.0A CN102375534B (en) | 2010-08-19 | 2010-08-19 | Electronic device and related control method thereof |
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| CN102375534B true CN102375534B (en) | 2014-07-30 |
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| CN109900365A (en) * | 2019-03-13 | 2019-06-18 | 深圳通感微电子有限公司 | Method and infrared detection device existing for a kind of judgement human body |
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| CN101639748A (en) * | 2008-07-29 | 2010-02-03 | 义隆电子股份有限公司 | Capacitive touch device and detection method thereof |
| CN101676842A (en) * | 2008-09-19 | 2010-03-24 | 统宝光电股份有限公司 | Method and device for sensing electric discharge of circuit, touch panel and electronic device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU4061100A (en) * | 1999-06-30 | 2001-01-22 | Sony Electronics Inc. | Method and apparatus for automatically answering an incoming call on a cordless or wireless phone |
| US6954867B2 (en) * | 2002-07-26 | 2005-10-11 | Microsoft Corporation | Capacitive sensing employing a repeatable offset charge |
| TWI285829B (en) * | 2004-11-29 | 2007-08-21 | Holtek Semiconductor Inc | Determination method of touch sensing device |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101639748A (en) * | 2008-07-29 | 2010-02-03 | 义隆电子股份有限公司 | Capacitive touch device and detection method thereof |
| CN101676842A (en) * | 2008-09-19 | 2010-03-24 | 统宝光电股份有限公司 | Method and device for sensing electric discharge of circuit, touch panel and electronic device |
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