CN103235673B - Touch screen detection method and touch screen - Google Patents
Touch screen detection method and touch screen Download PDFInfo
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- CN103235673B CN103235673B CN201310125421.2A CN201310125421A CN103235673B CN 103235673 B CN103235673 B CN 103235673B CN 201310125421 A CN201310125421 A CN 201310125421A CN 103235673 B CN103235673 B CN 103235673B
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Abstract
The invention provides a touch screen detection method and a touch screen, wherein the touch screen detection method comprises the following steps: the processing module sends a signal for starting detection to the driving module and the detection module; the detection module is awakened from the sleep mode, and the processing module enters the sleep mode; the driving module applies a driving signal to the driving line, and the detection module detects the change of mutual capacitance of a region between the driving line and the sensing line to obtain a detection signal; the processing module is awakened from the sleep mode; the detection module enters a sleep mode after detection is finished; and the processing module determines the position of the touch point according to the detection signal obtained by the detection module. According to the touch screen detection method and the touch screen, the processing module and the detection module enter the sleep mode in turn to reduce power consumption, so that the touch screen has the advantages of energy conservation and environmental protection.
Description
Technical field
The present invention relates to touch-screen field, particularly relate to a kind of detection method of touch screen and touch-screen.
Background technology
Along with scientific and technological development, the electronic products such as increasing mobile phone, panel computer adopt touch-screen conductIts screen. Capacitance touch screen is to utilize the electric current induction of human body to carry out work. When the objects such as people's finger connectWhile touching capacitance touch screen, can cause the variation of electric capacity herein, capacitance touch screen becomes according to the appearance electric capacity sensingNext step action is carried out in the position of changing.
Please refer to Fig. 1, conventional capacitance touch screen 100 comprises touch panel, driver module 120, detectsModule 130 and processing module 140. On touch panel, there is drive wire 112 and the line of induction 114. Drive wire112 is mutually arranged in a crossed manner with the line of induction 114. Drive wire 112 and the line of induction 114 have formed the two poles of the earth of mutual capacitance.Drive wire 112 is connected with driver module 120, and the line of induction 114 is connected with detection module 130. Processing module140 are connected with detection module 130. When this capacitance touch screen 100 is worked, driver module 120 can produce and driveSignal is also applied to drive wire 112 by driving signal. Detection module 130 transmits for detection of the line of induction 114Induced signal. In the time that the objects such as finger touch this capacitance touch screen 100, the mutual capacitance on touch panel willChange, detection module 130 detects this variation and the signal detecting passed to processing module 140,Processing module 140 is by calculating the coordinate that can obtain touch point.
Detection module and the processing module of conventional capacitance touch screen are worked simultaneously, are unfavorable for like this power consumptionReduction. And lower power consumption not only has advantages of energy-conserving and environment-protective, and can increase mobile phone, dull and stereotyped electricityBrains etc. use the service time of the electronic product of this capacitance touch screen. Therefore, reduce the power consumption of capacitance touch screenBecome present stage urgent problem.
Summary of the invention
Based on this, be necessary to provide a kind of detection method of touch screen and touch-screen, it can reduce touch-screenPower consumption, has advantages of energy-conserving and environment-protective.
A kind of detection method of touch screen, based on comprising processing module, driver module, detection module and touch-screenThe touch-screen of panel, described touch panel comprises sense wire and drive wire, described processing module for the treatment ofThe data that detection module transmits, described driver module is used for applying driving signal to described drive wire, described inspectionSurvey module for detect the capacitance of the mutual capacitance on touch panel by detection line, described touch-screen detectsMethod comprises the following steps: processing module sends to driver module and detection module the signal that starts detection; InspectionSurvey module and be waken up from park mode, processing module enters park mode; Driver module applies to drive wireDrive signal, the variation that detection module detects the mutual capacitance in region between drive wire and sense wire obtains detecting letterNumber; Processing module is waken up from park mode; Detection module enters park mode after completing detection; ProcessThe detection signal that module obtains according to detection module is determined the position of touch point.
In an embodiment, described processing module starts to detect to driver module and detection module transmission thereinThe step of signal be periodically to carry out.
In an embodiment, in the step that described processing module is waken up from park mode, process mould thereinPiece is waken up by timed interrupt cycle.
In an embodiment, the cycle of described Interruption is 1 millisecond therein.
In an embodiment, after the step that described processing module is waken up from park mode, also wrap thereinDraw together following steps: processing module judges whether detection module completes the scanning to touch-screen, if do not complete rightThe scanning of touch-screen, processing module enters park mode.
Therein in an embodiment, described detection module completes in the step that enters park mode after detection and examinesSurvey module and enter park mode by processing module control.
In an embodiment, described detection module is waken up from park mode therein, and processing module entersIn the step of park mode, to enter park mode be that clock by closing self is realized to processing module.
A kind of touch-screen, described touch-screen comprises touch panel, driver module, detection module and processing mouldPiece, the sense wire that there is drive wire on described touch panel, intersects with described drive wire and being formed atThe mutual capacitance of described drive wire and sense wire intersection region, described driver module applies driving to described drive wireSignal, described detection module detects the variation of described mutual capacitance and detection signal is passed to described processing module,The detection signal that described processing module transmits according to detection module is determined the position of touch point, described detection moduleWhen work, described processing module is in park mode; When described processing module work, described processing module willDescribed detection module is adjusted to park mode.
In an embodiment, described processing module is single-chip microcomputer therein.
In an embodiment, described processing module and described detection module are integrated in a chip therein.
Above-mentioned detection method of touch screen and touch-screen are by allowing processing module and detection module enter in turn dormancy mouldFormula reduces power consumption, makes touch-screen have advantages of energy-conserving and environment-protective.
Brief description of the drawings
Fig. 1 is conventional touch-screen schematic diagram;
Fig. 2 is the detection method of touch screen flow chart of an embodiment.
Detailed description of the invention
An embodiment provides a kind of touch-screen, and this touch-screen comprises touch panel, driver module, detectionModule and processing module. The sense wire and the shape that on touch panel, there is drive wire, intersect with drive wireBe formed in the mutual capacitance of drive wire and sense wire intersection region. When this touch-screen work, driver module is to drive wireApply driving signal, detection module detects the variation of mutual capacitance and detection signal is passed to processing module, locatesThe detection signal that reason module transmits according to detection module is determined the position of touch point. In this touch-screen course of workIn, in the time that detection module is worked, processing module is in park mode; In the time that processing module is worked, process mouldDetection module is adjusted to park mode by piece. That is to say, processing module and detection module take turns to operate to reachTo the object that reduces power consumption.
Park mode is herein a kind of low power consumpting state, when processing module or detection module enter park mode,Their power consumption will significantly reduce or even zero-power. Park mode can by close self clock orReducing the modes such as clock frequency realizes. In this embodiment, reason module and detection module can be integrated in oneIn individual chip. Processing module can be single-chip microcomputer. In the time that processing module is single-chip microcomputer, can be by closing certainlyThe clock of body enters park mode.
This touch-screen is in the time carrying out contact position detection, and processing module first sends to driver module and detection moduleStart the signal detecting; Then detection module is waken up from park mode, and processing module enters park mode;Then driver module applies driving signal to drive wire, and detection module detects region between drive wire and sense wireThe variation of mutual capacitance obtain detection signal; Then processing module is waken up from park mode, detection moduleAfter completing detection, enter park mode; The detection signal that last processing module obtains according to detection module is determined tactileTouch position a little.
Like this, in the testing process of touch point, processing module and detection module take turns to operate to reach reductionThe object of power consumption. Therefore, this touch-screen has advantages of energy-conserving and environment-protective.
Please refer to Fig. 2, another embodiment provides a kind of detection method of touch screen. On touch-screen herein adoptsThe touch-screen of an embodiment. This touch-screen comprises processing module, driver module, detection module and touch-screenThe touch-screen of panel. Touch panel comprises sense wire and drive wire, and processing module is for the treatment of detection moduleThe data that transmit, driver module is used for applying driving signal to drive wire, and detection module is used for passing through detection lineDetect the capacitance of the mutual capacitance on touch panel. This detection method of touch screen comprises the following steps:
Step S110, processing module sends to driver module and detection module the signal that starts detection. Initial shapeWhen state, this touch-screen is closed. After touch-screen starts, processing module can first start. Processing module startsAfter will send and start the signal that detects to driver module and detection module, driver module and detection module are openedBeginning work. This step S110 periodically carries out, namely processing module can between at regular intervals to drivingDynamic model piece and detection module send the signal that once starts detection.
Step S120, detection module receive processing module send start detect signal after will be from park modeIn be waken up, meanwhile, processing module enters park mode. Processing module enters park mode can be by closingClosing the clock of processing module self realizes. Because processing module enters park mode, the power consumption of processing moduleTo reduce a lot.
Step S130, driver module will apply driving signal to drive wire after receiving the signal that starts to detect. InspectionThe variation of surveying the mutual capacitance in region between module detection drive wire and sense wire obtains detection signal. This inspectionSurvey module detects the mutual capacitance in region between drive wire and sense wire by scanning every sense wire.
Step S140, processing module is waken up from park mode. In this step S140, processing module isWaken up by timed interrupt cycle. In this embodiment, the cycle of Interruption is 1 millisecond. Process mouldAfter being waken up, piece will judge whether detection module completes the scanning to touch-screen, if do not complete touch-screenScanning, detection module does not complete detection, and processing module will reenter park mode and wait for next interruptionThe arrival in cycle. If processing module determines detection module and completed the scanning to touch-screen, detectModule completes detection, and processing module will send control signals to detection module makes detection module enter park mode.
Certainly, processing module also can not judge after being waken up whether detection module completes the scanning to touch-screen.Can complete the needed time of the scanning of touch-screen by detection module computed in advance herein, set and process mouldPiece is waken up complete the needed time of the scanning of touch-screen through detection module after.
Step S150, detection module enters park mode after completing detection. Detection module receives that processing module sends outAfter the control signal of sending, will enter park mode, the data that simultaneously detection module detected will pass to processingModule. Detection module enters after park mode, and its power consumption will significantly reduce. Detection module in this embodimentEnter park mode by processing module control.
Step S160, the detection signal that processing module obtains according to detection module is determined the position of touch point. PlaceReason module will be calculated according to the method for setting after receiving the detection data that detection module transmits, thereby reallyDetermine the position of touch point.
Through above-mentioned steps, this detection method of touch screen just can reduce touch-screen in the time of position, definite touch pointPower consumption. Use the touch-screen of this detection method of touch screen also just to there are energy-conserving and environment-protective.
Above-mentioned detection method of touch screen and touch-screen are by allowing processing module and detection module enter in turn dormancy mouldFormula reduces power consumption, makes touch-screen have advantages of energy-conserving and environment-protective.
The above embodiment has only expressed several embodiment of the present invention, and it describes comparatively concrete and detailed,But can not therefore be interpreted as the restriction to the scope of the claims of the present invention. It should be pointed out that for this areaThose of ordinary skill, without departing from the inventive concept of the premise, can also make some distortion andImprove, these all belong to protection scope of the present invention. Therefore, the protection domain of patent of the present invention should be with appendedClaim is as the criterion.
Claims (7)
1. a detection method of touch screen, based on comprising processing module, driver module, detection module and touchThe touch-screen of panel plate, described touch panel comprises sense wire and drive wire, described processing module is for placeThe data that reason detection module transmits, described driver module is used for applying driving signal to described drive wire, described inDetection module is used for detecting by detection line the capacitance of the mutual capacitance on touch panel, it is characterized in that,Described detection method of touch screen comprises the following steps:
Processing module sends to driver module and detection module the signal that starts detection, wherein, and when original state,Described touch-screen is closed, and after described touch-screen starts, described processing module can first open, described processing mouldAfter starting, piece will send the signal that starts detection to described driver module and detection module;
Detection module is waken up from park mode, and processing module enters park mode;
Driver module applies driving signal to drive wire, and detection module detects region between drive wire and sense wireThe variation of mutual capacitance obtain detection signal;
Processing module is waken up from park mode;
Detection module enters park mode after completing detection;
The detection signal that processing module obtains according to detection module is determined the position of touch point.
2. detection method of touch screen according to claim 1, is characterized in that, described processing module toThe step that driver module and detection module send the signal that starts detection is periodically to carry out.
3. detection method of touch screen according to claim 1, is characterized in that, described processing module fromIn the step being waken up in park mode, processing module is waken up by timed interrupt cycle.
4. detection method of touch screen according to claim 3, is characterized in that, described InterruptionCycle is 1 millisecond.
5. according to the detection method of touch screen described in claim 3 or 4, it is characterized in that described processing mouldFurther comprising the steps of after the step that piece is waken up from park mode: processing module judges that detection module isThe no scanning completing touch-screen, if do not complete the scanning to touch-screen, processing module enters park mode.
6. detection method of touch screen according to claim 1, is characterized in that, described detection module is completeAfter becoming to detect, enter detection module in the step of park mode and enter park mode by processing module control.
7. detection method of touch screen according to claim 1, is characterized in that, described detection module fromIn park mode, be waken up, processing module enters in the step of park mode processing module and enters park mode and beBy close self clock realize.
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| CN107479775A (en) * | 2014-02-24 | 2017-12-15 | 原相科技股份有限公司 | Capacitive finger navigation module |
| CN106227292B (en) * | 2016-07-22 | 2024-01-09 | 北京集创北方科技股份有限公司 | Clock control device, clock control method and touch display device |
| CN106686704B (en) * | 2016-12-07 | 2020-03-03 | Oppo广东移动通信有限公司 | Terminal monitoring method and mobile terminal |
| GB201703109D0 (en) * | 2017-02-25 | 2017-04-12 | Peratech Holdco Ltd | Energising a sensing apparatus |
| CN107589698B (en) | 2017-09-20 | 2021-05-25 | 友达光电股份有限公司 | Sensing device applied to Internet of things and control method |
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| CN201293982Y (en) * | 2007-01-03 | 2009-08-19 | 苹果公司 | Simultaneous sensing device, and electronic equipment and mobile telephone applying the simultaneous sensing device |
| CN101583923A (en) * | 2007-01-03 | 2009-11-18 | 苹果公司 | Multi-touch auto scanning |
| CN101866231A (en) * | 2009-04-14 | 2010-10-20 | 联咏科技股份有限公司 | Control method and related device for detecting touch event in touch panel |
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| US8065545B2 (en) * | 2007-05-03 | 2011-11-22 | Microchip Technology Incorporated | Interrupt/wake-up of an electronic device in a low power sleep mode when detecting a sensor or frequency source activated frequency change |
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| CN201293982Y (en) * | 2007-01-03 | 2009-08-19 | 苹果公司 | Simultaneous sensing device, and electronic equipment and mobile telephone applying the simultaneous sensing device |
| CN101583923A (en) * | 2007-01-03 | 2009-11-18 | 苹果公司 | Multi-touch auto scanning |
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Address after: 518057 Shenzhen science and Technology Park, 13 Lang Shan Road, North District, Nanshan District hi tech Zone, Guangdong, Applicant after: Shenzhen Titan Micro Electronics Co., Ltd Address before: 518057 Shenzhen science and Technology Park, 13 Lang Shan Road, North District, Nanshan District hi tech Zone, Guangdong, Applicant before: Shenzhen Titan Micro Electronics Co., Ltd. |
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