CN103123549A - Touch screen system and synchronous detection method thereof - Google Patents

Touch screen system and synchronous detection method thereof Download PDF

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Publication number
CN103123549A
CN103123549A CN2012103123964A CN201210312396A CN103123549A CN 103123549 A CN103123549 A CN 103123549A CN 2012103123964 A CN2012103123964 A CN 2012103123964A CN 201210312396 A CN201210312396 A CN 201210312396A CN 103123549 A CN103123549 A CN 103123549A
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China
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touch
screen
signal
chip
detected
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CN2012103123964A
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CN103123549B (en
Inventor
钟华
邓耿淳
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Shenzhen Goodix Technology Co Ltd
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Shenzhen Huiding Technology Co Ltd
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Priority to CN201210312396.4A priority Critical patent/CN103123549B/en
Publication of CN103123549A publication Critical patent/CN103123549A/en
Priority to PCT/CN2013/079489 priority patent/WO2014032485A1/en
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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/0416—Control or interface arrangements specially adapted for digitisers
    • G06F3/04166—Details of scanning methods, e.g. sampling time, grouping of sub areas or time sharing with display driving

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Position Input By Displaying (AREA)

Abstract

A touch screen system comprises a touch screen and a touch chip, wherein the touch screen comprises a first communication module which is used for sending detection signals to the touch chip, and the touch chip comprises a storage module which is used for pre-storing frequency of drive signals of the touch screen, a second communication module for timekeeping and receiving detected signals of the touch chip at the detection time, a quadrature demodulation module used for demodulating the detected signals in a quadrature mode according to the frequency of the drive signals and obtaining the signals to be detected, and a judging module used for judging whether the amplitude value of the signals to be detected is larger than or equal to a first preset threshold value. The storage module is further used for, on the condition that the amplitude of the signals to be detected is larger than and equal to the first preset threshold value, recording the detection time as a drive time segment and finishing synchronously. The touch chip is used for demodulating the detected signals in a quadrature mode or obtaining display time and drive time of the touch screen or the display time and the spare time of the touch screen through fast fourier transform algorithm (FFT) changes so that synchrony of the touch chip and the touch screen is realized.

Description

Touch-screen system and the synchronous method that detects thereof
Technical field
The present invention relates to the touch-screen field, relate in particular to a kind of touch-screen system and the synchronous method that detects thereof.
Background technology
As shown in Figure 1, TFT-LCD (hereinafter to be referred as LCD) comprises white light source, polaroid, tft array (TFT Array) substrate, liquid crystal, colored filter etc.When LCD carries out the image demonstration, first choose the row that will show by gate line (Gate line), then by source electrode line (Source line), electric signal corresponding to the image that will show outputed on this row, so just complete the demonstration of delegation.After the same method, the image on every other row is shown complete, LCD completes a display update also referred to as having completed a frame scan.
At present electronic product such as smart mobile phone generally all with LCD as human-computer interaction interface, and the use of capacitance touch screen, make undoubtedly this more convenient alternately, hommization more.Common capacitive touch screen generally comprises and drives layer and inductive layer, and the centre separates with glass or film, and two-layer cabling is mutually vertical.At present a kind of popular way is the inside that the driving layer of capacitance touch screen and inductive layer are made into LCD, namely between tft array substrate and colored filter.A kind of implementation is to utilize the signal of LCD self as the driving signal output part of touch-screen, by increasing an inductive layer as the touch screen signal receiving end, sees Fig. 2.Owing to needing only the extra inductive layer that increases, with respect to two-layer capacitance touch screen, it can simplify the procedure for producing of touch-screen, raises the efficiency and reduces costs.But belong to different systems owing to driving signal and induced signal, the former belongs to LCD, and the latter belongs to the touch chip, is separate, and both need to carry out on sequential synchronously, to realize driving signal demodulation accurately.
As shown in Figure 3, the second way is all done into LCD inside together driving layer and inductive layer, and this mode can reduce the thickness of whole system (LCD+ touch-screen), is conducive to electronic product to ultra-thin future development.Under this kind mode, detect the normal impact that shows on LCD for reducing to touching scanning, adopted equally the method for Time share scanning.Therefore, need also to judge that LCD scans the time of completing, namely need synchronous.
Summary of the invention
In view of this, be necessary to provide a kind of new touch system and the synchronous method that detects thereof, realization touch chip is synchronizeed with touch-screen.
Touch-screen system provided by the invention is used for electronic equipment, comprising: comprise touch-screen and touch chip, wherein, described touch-screen comprises: first communication module is used for being detected signal and sends to described touch chip; Described touch chip comprises: memory module is used for the frequency of the driving signal of pre-stored touch-screen; Second communication module is used for timing, and then receives the detected signal of described touch chip in detection time; The quadrature demodulation module is used for according to the frequency of described driving signal, described detected signal being carried out quadrature demodulation, obtains signal to be detected; Judge module, be used for judging that whether the amplitude of described signal to be detected is more than or equal to the first predetermined threshold value, wherein said memory module is recorded as the driving time section with this detection time when also being used for amplitude at described signal to be detected more than or equal to described the first predetermined threshold value, synchronously completes.
Another touch-screen system provided by the invention is used for electronic equipment, comprises touch-screen and touches chip, and wherein, described touch-screen comprises: first communication module is used for being detected signal and sends to described touch chip; Described touch chip comprises: memory module is used for the frequency range of the display of pre-stored touch-screen; Second communication module is used for timing, and then receives the detected signal of described touch chip in detection time; The quadrature demodulation module is used for described detected signal a pair of according to the frequency range one of described demonstration and carries out quadrature demodulation, obtains whole signals to be detected; Judge module, be used for judging whether the amplitude of described whole signals to be detected has one at least more than or equal to the second predetermined threshold value, wherein said memory module is recorded as the driving time section with this detection time when also being used for amplitude at described whole signals to be detected all more than or equal to the second predetermined threshold value, synchronously completes.
The touch-screen system that the present invention also provides is used for electronic equipment, comprises touch-screen and touches chip, and wherein, described touch-screen comprises: first communication module is used for being detected signal and sends to described touch chip; Described touch chip comprises: memory module is used for the spectrum signature of the driving signal of pre-stored touch-screen; Second communication module is used for timing, and then receives the detected signal of described touch chip in detection time; The FFT processing module is used for that described detected signal is carried out FFT and processes, to obtain the spectrum signature of described detected signal; Judge module, be used for judging whether the spectrum signature of described detected signal is consistent with the spectrum signature of described driving signal, wherein said memory module also is used for when the spectrum signature of described detected signal is consistent with the spectrum signature of described driving signal, being recorded as the driving time section this detection time, synchronously completes.
The present invention also provides another touch-screen system, is used for electronic equipment, comprises touch-screen and touches chip, and wherein: described touch-screen comprises: first communication module is used for being detected signal and sends to described touch chip; Described touch chip comprises: memory module is used for the spectrum signature of the display of pre-stored touch-screen; Second communication module is used for timing, and then receives the detected signal of described touch chip in detection time; The FFT processing module is used for that described detected signal is carried out FFT and processes, to obtain the spectrum signature of described detected signal; Judge module, be used for judging whether the spectrum signature of described detected signal is consistent with the spectrum signature of described display, wherein said memory module also is used for when the spectrum signature of the spectrum signature of described detected signal and described display is inconsistent, being recorded as the driving time section this detection time, synchronously completes.
The touch-screen system that the present invention also provides is used for electronic equipment, comprises touch-screen and touches chip, and wherein, described touch-screen comprises: first communication module is used for being detected signal and sends to described touch chip; Described touch chip comprises: memory module is used for the frequency range of the display of pre-stored touch-screen; Second communication module is used for timing, and then receives the detected signal of described touch chip in detection time; The quadrature demodulation module is used for described detected signal a pair of according to the frequency range one of described display and carries out quadrature demodulation, obtains whole signals to be detected; Judge module, be used for judging that whether the amplitude of described whole signals to be detected is all less than the 3rd predetermined threshold value, wherein said memory module is recorded as the free time section with this detection time when also being used for amplitude at described whole signals to be detected all less than the 3rd predetermined threshold value, synchronously completes.
Another touch-screen system provided by the invention is used for electronic equipment, comprises touch-screen and touches chip, and wherein: described touch-screen comprises: first communication module is used for being detected signal and sends to described touch chip; Described touch chip comprises: memory module is used for the frequency of signal of the free time of pre-stored touch-screen; Second communication module is used for timing, and then receives the detected signal of described touch chip in detection time; The quadrature demodulation module is used for carrying out quadrature demodulation according to a pair of described detected signal of frequency range one of the signal of free time of described touch-screen, obtains whole signals to be detected; Judge module, be used for judging that whether the amplitude of described whole signals to be detected is all less than the 4th predetermined threshold value, wherein said memory module is recorded as the free time section with this detection time when also being used for amplitude at described signal to be detected all less than described the 4th predetermined threshold value, synchronously completes.
The touch-screen system that the present invention also provides is used for electronic equipment, comprises touch-screen and touches chip, and wherein, described touch-screen comprises: first communication module is used for being detected signal and sends to described touch chip; Described touch chip comprises: memory module is used for the spectrum signature of the display of pre-stored touch-screen; Second communication module is used for timing, and then receives the detected signal of described touch chip in detection time; The FFT processing module is used for that described detected signal is carried out FFT and processes, to obtain the spectrum signature of described detected signal; Judge module, be used for judging whether the spectrum signature of described detected signal is consistent with the spectrum signature of described display, wherein said memory module also is used for when the spectrum signature of the spectrum signature of described detected signal and described display is inconsistent, being recorded as the free time section this detection time, synchronously completes.
The another kind of touch-screen system that the present invention also provides is used for electronic equipment, comprises touch-screen and touches chip, and wherein: described touch-screen comprises: first communication module is used for being detected signal and sends to described touch chip; Described touch chip comprises: memory module is used for the spectrum signature of signal of the free time of pre-stored touch-screen; Second communication module is used for timing, and then receives the detected signal of described touch chip in detection time; The FFT processing module is used for that described detected signal is carried out FFT and processes, to obtain the spectrum signature of described detected signal; Judge module, whether the spectrum signature that is used for judging described detected signal is consistent with the spectrum signature of the signal of free time of described touch-screen, wherein said memory module also is used for when the spectrum signature of described detected signal is consistent with the spectrum signature of described display, being recorded as the free time section this detection time, synchronously completes.
The synchronous method that detects of touch-screen system provided by the invention is used for electronic equipment, wherein, touch-screen is connected with the touch chip, touch the frequency of pre-stored driving signal in chip, said method comprising the steps of: the timing of described touch chip, and judge whether detection time; If to detection time, touch chip and receive detected signal; Described touch chip utilizes the frequency of described driving signal to carry out quadrature demodulation to detected signal and obtains signal to be detected; Described touch chip judges that whether the amplitude of described signal to be detected is more than or equal to the first predetermined threshold value; If to record this detection time be the driving time section to described touch chip, synchronously completes.
The synchronous method that detects of another touch-screen system provided by the invention, be used for electronic equipment, wherein, touch-screen is connected with the touch chip, touch the frequency range of pre-stored display in chip, said method comprising the steps of: the timing of described touch chip, and judge whether detection time; If to detection time, touch chip and receive detected signal; Described touch chip utilizes a pair of detected signal of the frequency range one of described display to carry out quadrature demodulation and obtains whole signals to be detected; Described touch chip judges whether the amplitude of described whole signals to be detected has one at least more than or equal to the second predetermined threshold value; If not to record this detection time be the driving time section to described touch chip, synchronously completes.
The synchronous method that detects of another touch-screen system provided by the invention, be used for electronic equipment, wherein, touch-screen is connected with the touch chip, touch the spectrum signature of pre-stored driving signal in chip, said method comprising the steps of: the timing of described touch chip, and judge whether detection time; If to detection time, touch chip and receive detected signal; Described touch chip carries out FFT to detected signal to be processed, to obtain the spectrum signature of detected signal; Described touch chip judges whether the spectrum signature of described detected signal is consistent with the spectrum signature that drives signal; If to record this detection time be the driving time section to described touch chip, synchronously completes.
A kind of synchronous method that detects of touch-screen system is used for electronic equipment, wherein, touch-screen is connected with the touch chip, touch the spectrum signature of pre-stored display in chip, said method comprising the steps of: the timing of described touch chip, and judge whether detection time; If to detection time, touch chip and receive detected signal; Described touch chip carries out FFT to detected signal to be processed, to obtain the spectrum signature of detected signal; Described touch chip judges whether the spectrum signature of described detected signal is consistent with the spectrum signature of described display; If not to record this detection time be the driving time section to described touch chip, synchronously completes.
The synchronous method that detects of the touch-screen system that the present invention also provides, be used for electronic equipment, the synchronous method that detects of touch-screen system, wherein, touch-screen is connected with the touch chip, touch the frequency range of pre-stored display in chip, said method comprising the steps of: the timing of described touch chip, and judge whether detection time; If to detection time, touch chip and receive detected signal; Described touch chip utilizes a pair of detected signal of the frequency range one of described display to carry out quadrature demodulation and obtains whole signals to be detected; Described touch chip judges that whether the amplitude of described whole signals to be detected is all less than the 3rd predetermined threshold value; If all less than described the 3rd predetermined threshold value, to record this detection time be the free time section to described touch chip, synchronously completes.
The synchronous method that detects of another touch-screen system provided by the invention, be used for electronic equipment, wherein, touch-screen is connected with the touch chip, touch the frequency range of the signal of the free time of pre-stored described touch-screen in chip, said method comprising the steps of: the timing of described touch chip, and judge whether detection time; If to detection time, touch chip and receive detected signal; Described touch chip utilizes a pair of detected signal of frequency range one of signal of the free time of described touch-screen to carry out quadrature demodulation and obtains whole signals to be detected; Described touch chip judges that whether the amplitude of described whole signals to be detected is all less than the 4th predetermined threshold value; If all less than described the 4th predetermined threshold value, to record this detection time be the free time section to described touch chip, synchronously completes.
The synchronous method that detects of the touch-screen system that the present invention also provides, be used for electronic equipment, wherein, touch-screen is connected with the touch chip, touch the spectrum signature of pre-stored display in chip, said method comprising the steps of: the timing of described touch chip, and judge whether detection time; If to detection time, touch chip and receive detected signal; Described touch chip carries out FFT to detected signal to be processed, to obtain the spectrum signature of detected signal; Described touch chip judges whether the spectrum signature of described detected signal is consistent with the spectrum signature of described display; If not to record this detection time be the free time section to described touch chip, synchronously completes.
The synchronous method that detects of another touch-screen system that the present invention also provides, be used for electronic equipment, wherein, touch-screen is connected with the touch chip, touch the spectrum signature of the signal of the free time of pre-stored described touch-screen in chip, said method comprising the steps of: the timing of described touch chip, and judge whether detection time; If to detection time, touch chip and receive detected signal; Described touch chip carries out FFT to detected signal to be processed, to obtain the spectrum signature of detected signal; Described touch chip judges whether the spectrum signature of described detected signal is consistent with the spectrum signature of the signal of the free time of described touch-screen; If to record this detection time be the free time section to described touch chip, synchronously completes.
Touch-screen system in embodiment of the present invention and the synchronous method that detects thereof carry out to detected signal displaying time and driving time or displaying time and the free time that quadrature demodulation or FFT change to obtain touch-screen by touching chip, in order to realize synchronizeing of touch chip and touch-screen.
Description of drawings
Fig. 1 is LCD structural representation in prior art;
Fig. 2 is the structural representation that in prior art, LCD increases inductive layer;
Fig. 3 is the structural representation that in prior art, LCD increase to drive layer and inductive layer;
Fig. 4 is the touch-screen system block diagram that comprises touch-screen shown in Figure 2 in an embodiment of the present invention;
Fig. 5 is the touch-screen system block diagram that comprises touch-screen shown in Figure 2 in another embodiment of the present invention;
Fig. 6 is the touch-screen system block diagram that comprises touch-screen shown in Figure 3 in an embodiment of the present invention;
Fig. 7 is the touch-screen system block diagram that comprises touch-screen shown in Figure 3 in another embodiment of the present invention;
Fig. 8 A is the method flow diagram that an embodiment of the present invention comprises the synchronous detection of touch-screen touch-screen system shown in Figure 2;
Fig. 8 B is the method flow diagram that another embodiment of the present invention comprises the synchronous detection of touch-screen touch-screen system shown in Figure 2;
Fig. 9 A is the method flow diagram that another embodiment of the present invention comprises the synchronous detection of touch-screen touch-screen system shown in Figure 2;
Fig. 9 B is the method flow diagram that another embodiment of the present invention comprises the synchronous detection of touch-screen touch-screen system shown in Figure 2;
Figure 10 A is the method flow diagram that an embodiment of the present invention comprises the synchronous detection of touch-screen touch-screen system shown in Figure 3;
Figure 10 B is the method flow diagram that another embodiment of the present invention comprises the synchronous detection of touch-screen touch-screen system shown in Figure 3;
Figure 11 A is the method flow diagram that another embodiment of the present invention comprises the synchronous detection of touch-screen touch-screen system shown in Figure 3;
Figure 11 B is the method flow diagram that another embodiment of the present invention comprises the synchronous detection of touch-screen touch-screen system shown in Figure 3;
Figure 12 is that timeslice and the detection signal strength of Fig. 4 in an embodiment of the present invention concerns schematic diagram;
Figure 13 is that timeslice and the detection signal strength of Fig. 6 in another embodiment of the present invention concerns schematic diagram.
Embodiment
The below describes embodiments of the invention in detail, and the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or the element with identical or similar functions from start to finish.Be exemplary below by the embodiment that is described with reference to the drawings, only be used for explaining the present invention, and can not be interpreted as limitation of the present invention.
In description of the invention, term " interior ", " outward ", " vertically ", " laterally ", " on ", orientation or the position relationship of the indications such as D score, " top ", " end " be based on orientation shown in the drawings or position relationship, be only the present invention for convenience of description rather than require the present invention with specific orientation structure and operation, therefore can not be interpreted as limitation of the present invention.
See also Fig. 4, Figure 4 shows that the touch-screen system that comprises touch-screen shown in Figure 2 20 in an embodiment of the present invention.In the present embodiment, touch-screen 20 communicates to connect with touching chip 10, is used for the electronic equipment (not shown).In the present embodiment, electronic equipment can for: mobile phone, computer notebook, Ipad etc. need to touch the equipment with Presentation Function.
Touch-screen 20 comprises: first communication module is used for being detected signal and sends to touch chip 10.
The touch chip comprises: memory module is used for the frequency of the driving signal of pre-stored touch-screen 20.In the present embodiment, the frequency of the driving signal of touch-screen 20 is pre-stored in touching chip.
Second communication module is used for timing, and then receives in detection time the detected signal that touches chip 10.In the present embodiment, touch chip 10 and begin to detect every 200～400us, complete until synchronize with touch-screen 20.
The quadrature demodulation module is used for according to the frequency of described driving signal, detected signal being carried out quadrature demodulation, obtains signal to be detected.
Whether judge module, the amplitude that is used for judging signal to be detected more than or equal to the first predetermined threshold value, when wherein memory module also is used for amplitude at signal to be detected more than or equal to the first predetermined threshold value, is recorded as the driving time section this detection time, synchronously completes.
In the present embodiment, the value that measures for according to practical application time of the first predetermined threshold value.
The displaying time section will be recorded as when in the present embodiment, memory module also is used for amplitude at signal to be detected all less than the first predetermined threshold value this detection time.
In the present embodiment, touch-screen also comprises driver module, for generation of driving signal, wherein, the matrix data that second communication module is converted to signal to be detected after synchronously completing, and judge according to matrix data whether touch action is arranged on touch-screen 20, and corresponding touch action and coordinate are reported to electronic equipment.
In other embodiments of the present invention, memory module is used for the frequency range of the display of pre-stored touch-screen 20.
The quadrature demodulation module is used for detected signal a pair of according to the frequency range one of display and carries out quadrature demodulation, obtains whole signals to be detected.
Judge module, be used for judging whether the amplitude of whole signals to be detected has one at least more than or equal to the second predetermined threshold value, wherein memory module also is used for amplitude at whole signals to be detected and has at least one to be recorded as the displaying time section this detection time during more than or equal to the second predetermined threshold value, synchronously completes.
In the present embodiment, the value that measures for according to practical application time of the second predetermined threshold value.
The driving time section will be recorded as when in the present embodiment, memory module also is used for amplitude at whole signals to be detected all less than the second predetermined threshold value this detection time.
In the present embodiment, touch-screen also comprises driver module, for generation of driving signal, wherein, second communication module will be detected the matrix data that signal is converted to after synchronously completing, and judge according to matrix data whether touch action is arranged on touch-screen 20, and corresponding touch action and coordinate are reported to electronic equipment.
In the present embodiment, memory module also is used for the frequency of pre-stored driving signal, and second communication module carries out obtaining matrix data after quadrature demodulation and analog to digital conversion according to the frequency that drives signal to detected signal.
See also Fig. 5, Figure 5 shows that the touch-screen system that comprises touch-screen shown in Figure 2 20 in an embodiment of the present invention.In the present embodiment, touch-screen 20 communicates to connect with touching chip 10, is used for the electronic equipment (not shown).In the present embodiment, electronic equipment can for: mobile phone, computer notebook, Ipad etc. need to touch the equipment with Presentation Function.
Touch-screen 20 comprises first communication module, is used for being detected signal and sends to touch chip 10.
Touching chip 10 comprises: memory module is used for the spectrum signature of the driving signal of pre-stored touch-screen 20.
Second communication module is used for timing, and then receives in detection time the detected signal that touches chip 20.
FFT (being Fast Fourier Transform (FFT)) processing module is used for that detected signal is carried out FFT and processes, to obtain the spectrum signature of detected signal.
Judge module, whether the spectrum signature that is used for the detected signal of judgement is consistent with the spectrum signature that drives signal, wherein memory module also is used for when the spectrum signature of detected signal is consistent with the spectrum signature that drives signal, being recorded as the driving time section this detection time, synchronously completes.
In the present embodiment, memory module also is used for will being recorded as the displaying time section this detection time when the spectrum signature of detected signal is inconsistent with the spectrum signature that drives signal.
In the present embodiment, touch-screen also comprises driver module, for generation of driving signal, wherein, second communication module will be detected signal and be converted to matrix data after synchronously completing, and judge according to matrix data whether touch action is arranged on touch-screen 20, and corresponding touch action and coordinate are reported to electronic equipment.
In another embodiment of the present invention, memory module is used for the spectrum signature of the display of pre-stored touch-screen 20.
Judge module, whether the spectrum signature that is used for the detected signal of judgement is consistent with the spectrum signature of display, wherein memory module also is used for when the spectrum signature of the spectrum signature that is detected signal and display is inconsistent, being recorded as the driving time section this detection time, synchronously completes.
In the present embodiment, memory module also is used for will being recorded as the displaying time section this detection time when the spectrum signature of detected signal is consistent with the spectrum signature of display.
In the present embodiment, touch-screen also comprises driver module, for generation of driving signal, wherein, second communication module will be detected signal and be converted to matrix data after synchronously completing, and judge according to matrix data whether touch action is arranged on touch-screen 20, and corresponding touch action and coordinate are reported to electronic equipment.
In the present embodiment, memory module also is used for the frequency of pre-stored driving signal, and second communication module carries out obtaining matrix data after quadrature demodulation and analog to digital conversion according to the frequency that drives signal to detected signal.
See also Fig. 6, Figure 6 shows that to comprise touch-screen shown in Figure 3 20 in an embodiment of the present invention " touch-screen system.In the present embodiment, touch-screen 20 ' communicates to connect with touching chip 10 ', is used for the electronic equipment (not shown).In the present embodiment, electronic equipment can for: mobile phone, computer notebook, Ipad etc. need to touch the equipment with Presentation Function.
Touch-screen 20 ' comprising: first communication module is used for being detected signal and sends to the touch chip.
Touching chip 10 ' comprising: memory module is used for the frequency range of the display of pre-stored touch-screen 20 '.
Second communication module is used for timing, and then receives in detection time the detected signal that touches chip 10 '.
The quadrature demodulation module is used for detected signal a pair of according to the frequency range one of display and carries out quadrature demodulation, obtains whole signals to be detected.
Whether judge module, the amplitude that is used for judging whole signals to be detected all less than the 3rd predetermined threshold value, when wherein memory module also is used for amplitude at whole signals to be detected all less than the 3rd predetermined threshold value, is recorded as the free time section this detection time, synchronously completes.In the present embodiment, the value that measures for according to practical application time of the 3rd predetermined threshold value.
In the present embodiment, memory module also is used for amplitude at whole signals to be detected and has at least one will to be recorded as the displaying time section this detection time during more than or equal to the 3rd predetermined threshold value.
In the present embodiment, touch chip 10 ' and also comprise driver module, be used for producing after synchronously completing and drive signal, wherein, second communication module is by driving the sampled signal of signal acquisition touch-screen 20 ', and sampled signal is converted to matrix data, judge according to matrix data whether touch action is arranged on touch-screen 20 ', and corresponding touch action and coordinate are reported to electronic equipment.
In other embodiments of the present invention, memory module is used for the frequency of signal of the free time of pre-stored touch-screen 20 '.
The quadrature demodulation module is used for carrying out quadrature demodulation according to a pair of detected signal of frequency range one of the signal of free time of touch-screen 20 ', obtains whole signals to be detected.
Whether judge module, the amplitude that is used for judging whole signals to be detected all less than the 4th predetermined threshold value, when wherein memory module also is used for amplitude at whole signals to be detected all less than the 4th predetermined threshold value, is recorded as the free time section this detection time, synchronously completes.In the present embodiment, the value that measures for according to practical application time of the 4th predetermined threshold value.
In the present embodiment, memory module also is used for amplitude at whole signals to be detected and has at least one will to be recorded as the displaying time section this detection time during more than or equal to the 4th predetermined threshold value.
In the present embodiment, touch chip 10 ' and also comprise driver module, be used for producing after synchronously completing and drive signal, wherein, second communication module is by driving the sampled signal of signal acquisition touch-screen 20 ', and sampled signal is converted to matrix data, judge according to matrix data whether touch action is arranged on touch-screen 20 ', and corresponding touch action and coordinate are reported to electronic equipment.
In the present embodiment, memory module also is used for the frequency of pre-stored driving signal, and second communication module carries out obtaining matrix data after quadrature demodulation and analog to digital conversion according to the frequency that drives signal to detected signal.
See also Fig. 7, Figure 7 shows that the touch-screen system that comprises touch-screen 20 ' shown in Figure 3 in an embodiment of the present invention.In the present embodiment, touch-screen 20 ' communicates to connect with touching chip 10 ', is used for the electronic equipment (not shown).In the present embodiment, electronic equipment can for: mobile phone, computer notebook, Ipad etc. need to touch the equipment with Presentation Function.
Touch-screen 20 ' comprising: first communication module is used for being detected signal and sends to touch chip 10 '.
Touching chip 10 ' comprising: memory module is used for the spectrum signature of the display of pre-stored touch-screen.
Second communication module is used for timing, and then receives in detection time the detected signal that touches chip 20 '.
The FFT processing module is used for that detected signal is carried out FFT and processes, to obtain the spectrum signature of detected signal.
Judge module, be used for judging whether the spectrum signature of signal to be detected is consistent with the spectrum signature of display, wherein memory module also is used for when the spectrum signature of the spectrum signature that is detected signal and display is inconsistent, being recorded as the free time section this detection time, synchronously completes.
In the present embodiment, memory module also is used for will being recorded as the displaying time section this detection time when the spectrum signature of detected signal is consistent with the spectrum signature of display.
In the present embodiment, touch chip 10 ' and also comprise driver module, be used for producing after synchronously completing and drive signal, wherein, second communication module is by driving the sampled signal of signal acquisition touch-screen 20 ', and sampled signal is converted to matrix data, judge according to matrix data whether touch action is arranged on touch-screen 20 ', and corresponding touch action and coordinate are reported to electronic equipment.
In other embodiments of the present invention, memory module is used for the spectrum signature of signal of the free time of pre-stored touch-screen.
Second communication module is used for timing, and then receives in detection time the detected signal that touches chip 20 '.
The FFT processing module is used for that detected signal is carried out FFT and processes, to obtain the spectrum signature of detected signal.
Judge module, whether the spectrum signature that is used for judging signal to be detected is consistent with the spectrum signature of the signal of free time of touch-screen 20 ', wherein memory module also is used for when the spectrum signature of detected signal is consistent with the spectrum signature of the signal of the free time of touch-screen 20 ', being recorded as the free time section this detection time, synchronously completes.
In the present embodiment, memory module also is used for will being recorded as the displaying time section this detection time when the spectrum signature of the signal of free time of the spectrum signature of detected signal and touch-screen 20 ' is inconsistent.
In the present embodiment, touch chip 10 ' and also comprise driver module, be used for producing after synchronously completing and drive signal, wherein, second communication module is by driving the sampled signal of signal acquisition touch-screen 20 ', and sampled signal is converted to matrix data, judge according to matrix data whether touch action is arranged on touch-screen 20 ', and corresponding touch action and coordinate are reported to electronic equipment.
See also Fig. 8 A, Fig. 8 A is depicted as the method that an embodiment of the present invention comprises the synchronous detection of touch-screen 20 touch-screen systems shown in Figure 2.In the present embodiment, the synchronous method that detects of touch-screen system is used for electronic equipment, and wherein, touch-screen 20 is connected with touch chip 10, touches the frequency of pre-stored driving signal in chip 10.
In the present embodiment, without driving layer, therefore the driver module generation by touch-screen 20 drives signal because of touch-screen shown in Figure 2 20.
At step S100, touch chip 10 and open timing;
At step S102, touch chip 10 and judge that whether the time of timing is to detection time.In the present embodiment, be 200～400us detection time.
During to detection time, at step S104, touch-screen 20 sends detected signals to touching chip in time of timing.
At step S106, touch chip 10 and receive detected signal.
At step S108, touch chip 10 and according to the frequency that drives signal, detected signal is carried out quadrature demodulation to obtain signal to be detected.
At step S110, touch chip 10 and judge that whether the amplitude of signal to be detected is more than or equal to the first predetermined threshold value.In the present embodiment, the value that measures for according to practical application time of the first predetermined threshold value.
If amplitude is more than or equal to the first predetermined threshold value, at step S112, it is the driving time section that the touch chip records detection time, synchronously completes.
At step S114, touch chip 10 signal to be detected is converted to matrix data.
At step S116, touch chip 10 and judge according to matrix data whether touch action is arranged on touch-screen 20, and corresponding touch action and coordinate are reported to electronic equipment.
If the amplitude of signal to be detected is all less than the first predetermined threshold value, at step S118, it is the displaying time section that the touch chip records detection time.
In other embodiments of the present invention, if touching pre-stored in chip 10 is the frequency range of display, see also Fig. 8 B, at S108, touch chip 10 detected signal a pair of according to the frequency range one of display and carry out quadrature demodulation to obtain whole signals to be detected.
At step S110, touch chip 10 and judge whether the amplitude of whole signals to be detected has one at least more than or equal to the second predetermined threshold value.In the present embodiment, the value that measures for according to practical application time of the second predetermined threshold value.
If amplitude is all less than the second predetermined threshold value, at step S112, it is the driving time section that the touch chip records detection time, synchronously completes.
At step S114, touch chip 10 will be detected signal and be converted to matrix data.
At step S116, touch chip 10 and judge according to matrix data whether touch action is arranged on touch-screen 20, and corresponding touch action and coordinate are reported to electronic equipment.
If the amplitude of whole signals to be detected has one at least more than or equal to the second predetermined threshold value, at step S118, it is the displaying time section that the touch chip records detection time.
See also Fig. 9 A, Fig. 9 A is depicted as the method that another embodiment of the present invention comprises the synchronous detection of touch-screen 20 touch-screen systems shown in Figure 2.In the present embodiment, the synchronous method that detects of touch-screen system is used for electronic equipment, and wherein, touch-screen 20 is connected with touch chip 10, touches the spectrum signature of pre-stored driving signal in chip 10.
Touch chip 10 at step S200 and open timing.
At step S202, touch chip 10 and judge whether detection time.
If to detection time, at step S204, touch-screen 20 sends detected signal to touch-screen 10.
At step S206, touch chip 10 and receive detected signal.
At step S208, touch 10 pairs of detected signals of chip and carry out the FFT processing, to obtain the spectrum signature of detected signal.
At step S210, whether the spectrum signature that touches the chip 10 detected signals of judgement is consistent with the spectrum signature that drives signal.
If the detected signal of expression is for driving signal, at step S212, it is the driving time section that touch chip 10 records this detection time, synchronously completes.
At step S214, touch chip 10 will be detected signal and be converted to matrix data.
At step S216, touch chip 10 and judge according to matrix data whether touch action is arranged on touch-screen 20, and corresponding touch action and coordinate are reported to electronic equipment.
If the spectrum signature of the detected signal of touch chip judgement is inconsistent with the spectrum signature that drives signal, detected signal is display, and at step S218, it is the displaying time section that touch chip 10 records this detection time.
In other embodiments of the present invention, if touch the spectrum signature of pre-stored display in chip 10, see also Fig. 9 B, at step S210, whether the spectrum signature that touches the chip 10 detected signals of judgement is consistent with the spectrum signature of display.
If inconsistent, the detected signal of expression is for driving signal, and at step S212, it is the driving time section that touch chip 10 records this detection time, synchronously completes.
At step S214, touch chip 10 will be detected signal and be converted to matrix data.
At step S216, touch chip 10 and judge according to matrix data whether touch action is arranged on touch-screen 20, and corresponding touch action and coordinate are reported to electronic equipment.
If it is consistent with the spectrum signature that drives signal to touch the spectrum signature of the detected signal of chip judgement, detected signal is display, and at step S218, it is the displaying time section that touch chip 10 records this detection time.
See also Figure 10 A, Figure 10 A is depicted as the method that an embodiment of the present invention comprises the synchronous detection of touch-screen 20 ' touch-screen system shown in Figure 3.
In the present embodiment, the synchronous method that detects of touch-screen system is used for electronic equipment, and wherein, touch-screen 20 ' is connected with touch chip 10 ', touches the frequency range of pre-stored display in chip 10 ', and method comprises the following steps:
At step S300, touch chip 10 ' and open timing.
At step S302, touch chip 10 ' and judge whether detection time.
If to detection time, at step S304, touch-screen 20 ' sends detected signal to touching chip 10 '.
At step S306, touch chip 10 ' and receive detected signal.
At step S308, touch chip 10 ' utilizes a pair of detected signal of frequency range one of display to carry out quadrature demodulation and obtains whole signals to be detected.
At step S310, touch chip 10 ' and judge that whether the amplitude of whole signals to be detected is all less than the 3rd predetermined threshold value.
If all less than the 3rd predetermined threshold value, at step S312, it is the free time section that touch chip 10 ' records this detection time, synchronously completes.
At step S314, touch chip 10 ' output drive signal to touch-screen 20 '.
At step S316, touch-screen 20 ' receives and drives signal, and obtains sampled signal according to driving signal.
At step S318, touch chip 10 ' sampled signal is converted to matrix data, and judge according to matrix data whether touch action is arranged on touch-screen 20 ', and corresponding touch action and coordinate are reported to electronic equipment.
If the amplitude of whole signals to be detected has one at least more than or equal to the 3rd predetermined threshold value, at step S320, it is the displaying time section that touch chip 10 ' records this detection time.
In other embodiments of the present invention, if touch the frequency of the signal of the free time of pre-stored touch-screen 20 ' in chip 10 ', see also Figure 10 B, at step S308, touch a pair of detected signal of frequency range one of signal that chip 10 ' utilizes the free time of touch-screen 20 ' and carry out quadrature demodulation and obtain whole signals to be detected.
At step S310, touch chip 10 ' and judge that whether the amplitude of signal to be detected is all less than the 4th predetermined threshold value.
If all less than the 4th predetermined threshold value, at step S312, it is the free time section that touch chip 10 ' records this detection time, synchronously completes.
At step S314, touch chip 10 ' output drive signal to touch-screen 20 '.
At step S316, touch-screen 20 ' receives and drives signal, and obtains sampled signal according to driving signal.
At step S318, touch chip 10 ' sampled signal is converted to matrix data, and judge according to matrix data whether touch action is arranged on touch-screen 20 ', and corresponding touch action and coordinate are reported to electronic equipment.
If the amplitude of whole signals to be detected has one at least more than or equal to the 4th predetermined threshold value, at step S320, it is the displaying time section that touch chip 10 ' records this detection time.
See also Figure 11 A, Figure 11 A is depicted as the method that another embodiment of the present invention comprises the synchronous detection of touch-screen 20 ' touch-screen system shown in Figure 3.
In the present embodiment, the synchronous method that detects of touch-screen system is used for electronic equipment, and wherein, touch-screen 20 ' is connected with touch chip 10 ', touches the spectrum signature of pre-stored display in chip 10 ', and method comprises the following steps:
At step S400, touch chip 10 ' and open timing.
At step S402, touch chip 10 ' and judge whether detection time.
If to detection time, touch chip and receive detected signal, at step S404, touch-screen 20 ' sends detection signal and refers to touch chip 10 '.
At step S406, touch chip 10 ' and receive detection signal.
At step S408, touch chip 10 ' detected signal is carried out the FFT processing, to obtain the spectrum signature of detected signal.
At step S410, whether the spectrum signature that touches chip 10 ' the detected signal of judgement is consistent with the spectrum signature of display.
If inconsistent, in step S412, touching chip, to record this detection time be the free time section, synchronously completes.
At step S414, touch chip 10 ' output drive signal to touch-screen 20 '.
At step S416, touch-screen 20 ' receives and drives signal, and obtains sampled signal according to driving signal.
At step S418, touch chip 10 ' and receive sampled signal, and judge to touch on chip 10 ' whether touch action is arranged according to matrix data, and corresponding touch action is reported to electronic equipment.
If the spectrum signature of detected signal is consistent with the spectrum signature of display, at step S420, it is the displaying time section that touch chip 10 ' records this detection time.
In other embodiments of the present invention, if touch the spectrum signature of the signal of the free time of pre-stored touch-screen 20 ' in chip 10 ', see also Figure 11 B, at step S410, whether the spectrum signature that touches chip 10 ' the detected signal of judgement is consistent with the spectrum signature of the signal of the free time of touch-screen 20 '.
If consistent, in step S412, touching chip, to record this detection time be the free time section, synchronously completes.
At step S414, touch chip 10 ' output drive signal to touch-screen 20 '.
At step S416, touch-screen 20 ' receives and drives signal, and obtains sampled signal according to driving signal.
At step S418, touch chip 10 ' and receive sampled signal, and judge to touch on chip 10 ' whether touch action is arranged according to matrix data, and corresponding touch action is reported to electronic equipment.
If the spectrum signature of the signal of the spectrum signature of detected signal and the free time of touch-screen 20 ' is inconsistent, at step S420, it is the displaying time section that touch chip 10 ' records this detection time.
See also Figure 12, Figure 12 shows that timeslice and the detection signal strength graph of a relation of Fig. 4 in an embodiment of the present invention.
In the present embodiment, refresh touch-screen 20 with 60Hz, the time of upgrading frame data is 1000/60=16.67ms, and namely the scan period is 16.67ms.Within a scan period, normal displaying time is 12ms, and touching sweep time (being driving time) is 4.67ms.
Touch chip 10 time-slottings and periodically adopt the method for quadrature demodulation to carry out demodulation to detected signal, frequency is consistent with driving frequency, and in the present embodiment, timeslice is less than 4ms, to guarantee can not miss the signal for driving touch-screen 20.
In normal displaying time, because the frequency of the display of touch-screen 20 is different from the frequency, demodulation frequency (namely driving the frequency of signal) that touches chip 10, the signal that demodulation obtains is very faint, Xiao Bai piece as shown in Figure 12.
In driving time, because the frequency of detected signal is consistent with the frequency that drives signal, the signal that obtains after demodulation is the strongest, as Figure 12 bend fritter.
At normal displaying time and driving time intersection, the signal intensity that obtains falls between, as grey fritter in Figure 12.
Whether touch chip judges by the amplitude size of the detected signal after quadrature demodulation more than or equal to the first predetermined threshold value, if more than or equal to the first predetermined threshold value, think that detected signal belongs to touch scanning, can use this numerical value to carry out coordinate Calculation, if less than the first predetermined threshold value, think display.
See also Figure 13, Figure 13 shows that timeslice and the detection signal strength graph of a relation of Fig. 6 in an embodiment of the present invention.
In the present embodiment, refresh touch-screen 20 ' with 60Hz, the time of upgrading frame data is 1000/60=16.67ms, and namely the scan period is 16.67ms.Within a scan period, normal displaying time is 12ms, and free time is 4.67ms.
Touch chip 10 ' time-slotting and periodically adopt the method for quadrature demodulation to carry out demodulation to detected signal, frequency is arranged in the frequency range of display, and in the present embodiment, timeslice is less than 4ms.
In normal displaying time, because in the frequency of the display of touch-screen 20 ' and touch chip 10 ', the frequency of pre-stored display is identical, the letter that demodulation obtains is good more intense, oblique line fritter as shown in Figure 13.
In at one's leisure, because the frequency of detected signal is very large with the frequency difference that touches display pre-stored in chip 10 ', the signal that obtains after demodulation is more weak, white piece as medium and small in Figure 13.
Normal displaying time and free time intersection, the signal intensity that obtains falls between, as grey fritter in Figure 13.
Whether touch chip 10 ' judges by the amplitude size of the detected signal after quadrature demodulation more than or equal to the 3rd predetermined threshold value, if less than the 3rd predetermined threshold value, think that touch-screen 20 ' is in the free time section at present, no signal output, can use this numerical value to carry out coordinate Calculation, if greater than the 3rd predetermined threshold value, think display.
Need to prove, in the various embodiments described above, preferably, drive the frequency of signal greater than the maximal value of the frequency range of display.
Touch-screen system in embodiment of the present invention carries out to detected signal displaying time and driving time or displaying time and the free time that quadrature demodulation or FFT change to obtain touch-screen by touching chip, so that realization touch chip is synchronizeed with touch-screen, effectively raise the rate of precision to touch-screen.
Although the present invention is described with reference to current better embodiment; but those skilled in the art will be understood that; above-mentioned better embodiment only is used for illustrating the present invention; be not to limit protection scope of the present invention; any within the spirit and principles in the present invention scope; any modification of doing, equivalence replacement, improvement etc. are within all should being included in the scope of the present invention.

Claims (48)

1. a touch-screen system, be used for electronic equipment, comprises touch-screen and touch chip, it is characterized in that:
Described touch-screen comprises: first communication module is used for being detected signal and sends to described touch chip;
Described touch chip comprises: memory module is used for the frequency of the driving signal of pre-stored touch-screen;
Second communication module is used for timing, and then receives the detected signal of described touch chip in detection time;
The quadrature demodulation module is used for according to the frequency of described driving signal, described detected signal being carried out quadrature demodulation, obtains signal to be detected;
Judge module, be used for judging that whether the amplitude of described signal to be detected is more than or equal to the first predetermined threshold value, wherein said memory module is recorded as the driving time section with this detection time when also being used for amplitude at described signal to be detected more than or equal to described the first predetermined threshold value, synchronously completes.
2. touch-screen system as claimed in claim 1, is characterized in that, described memory module will be recorded as the displaying time section this detection time when also being used for amplitude at described signal to be detected less than described the first predetermined threshold value.
3. touch-screen system as claimed in claim 1, it is characterized in that, described touch-screen also comprises driver module, for generation of driving signal, wherein, described second communication module is converted to matrix data with described signal to be detected after synchronously completing, and judges according to described matrix data whether touch action is arranged on described touch-screen, and corresponding touch action and coordinate are reported to electronic equipment.
4. a touch-screen system, be used for electronic equipment, comprises touch-screen and touch chip, it is characterized in that:
Described touch-screen comprises: first communication module is used for being detected signal and sends to described touch chip;
Described touch chip comprises: memory module is used for the frequency range of the display of pre-stored touch-screen;
Second communication module is used for timing, and then receives the detected signal of described touch chip in detection time;
The quadrature demodulation module is used for described detected signal a pair of according to the frequency range one of described display and carries out quadrature demodulation, obtains whole signals to be detected;
Judge module, be used for judging whether the amplitude of described whole signals to be detected has one at least more than or equal to the second predetermined threshold value, wherein said memory module also is used for amplitude at described whole signals to be detected and has at least one to be recorded as the displaying time section this detection time during more than or equal to described the second predetermined threshold value, synchronously completes.
5. touch-screen system as claimed in claim 1, is characterized in that, described memory module will be recorded as the driving time section this detection time when also being used for amplitude at described whole signals to be detected all less than described the second predetermined threshold value.
6. touch-screen system as claimed in claim 1, it is characterized in that, described touch-screen also comprises driver module, for generation of driving signal, wherein, described second communication module is converted to matrix data with described detected signal after synchronously completing, and judges according to described matrix data whether touch action is arranged on described touch-screen, and corresponding touch action and coordinate are reported to electronic equipment.
7. a touch-screen system, be used for electronic equipment, comprises touch-screen and touch chip, it is characterized in that:
Described touch-screen comprises: first communication module is used for being detected signal and sends to described touch chip;
Described touch chip comprises: memory module is used for the spectrum signature of the driving signal of pre-stored touch-screen;
Second communication module is used for timing, and then receives the detected signal of described touch chip in detection time;
The FFT processing module is used for that described detected signal is carried out FFT and processes, to obtain the spectrum signature of described detected signal;
Judge module, be used for judging whether the spectrum signature of described detected signal is consistent with the spectrum signature of described driving signal, wherein said memory module also is used for when the spectrum signature of described detected signal is consistent with the spectrum signature of described driving signal, being recorded as the driving time section this detection time, synchronously completes.
8. touch-screen system as claimed in claim 7, is characterized in that, described memory module also is used for will being recorded as the displaying time section this detection time when the spectrum signature of the spectrum signature of described detected signal and described driving signal is inconsistent.
9. touch-screen system as claimed in claim 7, it is characterized in that, described touch-screen also comprises driver module, for generation of driving signal, wherein, described second communication module is converted to matrix data with described detected signal after synchronously completing, and judges according to described matrix data whether touch action is arranged on described touch-screen, and corresponding touch action and coordinate are reported to electronic equipment.
10. a touch-screen system, be used for electronic equipment, comprises touch-screen and touch chip, it is characterized in that:
Described touch-screen comprises: first communication module is used for being detected signal and sends to described touch chip;
Described touch chip comprises: memory module is used for the spectrum signature of the display of pre-stored touch-screen;
Second communication module is used for timing, and then receives the detected signal of described touch chip in detection time;
The FFT processing module is used for that described detected signal is carried out FFT and processes, to obtain the spectrum signature of described detected signal;
Judge module, be used for judging whether the spectrum signature of described detected signal is consistent with the spectrum signature of described display, wherein said memory module also is used for when the spectrum signature of the spectrum signature of described detected signal and described display is inconsistent, being recorded as the driving time section this detection time, synchronously completes.
11. touch-screen system as claimed in claim 10 is characterized in that, described memory module also is used for will being recorded as the displaying time section this detection time when the spectrum signature of described detected signal is consistent with the spectrum signature of described display.
12. touch-screen system as claimed in claim 10, it is characterized in that, described touch-screen also comprises driver module, for generation of driving signal, wherein, described second communication module is converted to matrix data with described detected signal after synchronously completing, and judges according to described matrix data whether touch action is arranged on described touch-screen, and corresponding touch action and coordinate are reported to electronic equipment.
13. a touch-screen system is used for electronic equipment, comprises touch-screen and touches chip, it is characterized in that:
Described touch-screen comprises: first communication module is used for being detected signal and sends to described touch chip;
Described touch chip comprises: memory module is used for the frequency range of the display of pre-stored touch-screen;
Second communication module is used for timing, and then receives the detected signal of described touch chip in detection time;
The quadrature demodulation module is used for described detected signal a pair of according to the frequency range one of described display and carries out quadrature demodulation, obtains whole signals to be detected;
Judge module, be used for judging that whether the amplitude of described whole signals to be detected is all less than the 3rd predetermined threshold value, wherein said memory module is recorded as the free time section with this detection time when also being used for amplitude at whole described signals to be detected all less than described the 3rd predetermined threshold value, synchronously completes.
14. touch-screen system as claimed in claim 13 is characterized in that, described memory module also is used for amplitude at described whole signals to be detected and has at least one will to be recorded as the displaying time section this detection time during more than or equal to described the 3rd predetermined threshold value.
15. touch-screen system as claimed in claim 13, it is characterized in that, described touch chip also comprises driver module, be used for producing after synchronously completing and drive signal, wherein, described second communication module passes through to drive the sampled signal of the described touch-screen of signal acquisition, and described sampled signal is converted to matrix data, judge according to described matrix data whether touch action is arranged on described touch-screen, and corresponding touch action and coordinate are reported to electronic equipment.
16. a touch-screen system is used for electronic equipment, comprises touch-screen and touches chip, it is characterized in that:
Described touch-screen comprises: first communication module is used for being detected signal and sends to described touch chip;
Described touch chip comprises: memory module is used for the frequency range of signal of the free time of pre-stored touch-screen;
Second communication module is used for timing, and then receives the detected signal of described touch chip in detection time;
The quadrature demodulation module is used for carrying out quadrature demodulation according to a pair of described detected signal of frequency range one of the signal of free time of described touch-screen, obtains whole signals to be detected;
Judge module, be used for judging that whether the amplitude of described whole signals to be detected is all less than the 4th predetermined threshold value, wherein said memory module is recorded as the free time section with this detection time when also being used for amplitude at described whole signals to be detected all less than described the 4th predetermined threshold value, synchronously completes.
17. touch-screen system as claimed in claim 16 is characterized in that, described memory module also is used for amplitude at described whole signals to be detected and has at least one will to be recorded as the displaying time section this detection time during more than or equal to described the 4th predetermined threshold value.
18. touch-screen system as claimed in claim 16, it is characterized in that, described touch chip also comprises driver module, be used for producing after synchronously completing and drive signal, wherein, described second communication module passes through to drive the sampled signal of the described touch-screen of signal acquisition, and described sampled signal is converted to matrix data, judge according to described matrix data whether touch action is arranged on described touch-screen, and corresponding touch action and coordinate are reported to electronic equipment.
19. a touch-screen system is used for electronic equipment, comprises touch-screen and touches chip, it is characterized in that:
Described touch-screen comprises: first communication module is used for being detected signal and sends to described touch chip;
Described touch chip comprises: memory module is used for the spectrum signature of the display of pre-stored touch-screen;
Second communication module is used for timing, and then receives the detected signal of described touch chip in detection time;
The FFT processing module is used for that described detected signal is carried out FFT and processes, to obtain the spectrum signature of described detected signal;
Judge module, be used for judging whether the spectrum signature of described detected signal is consistent with the spectrum signature of described display, wherein said memory module also is used for when the spectrum signature of the spectrum signature of described detected signal and described display is inconsistent, being recorded as the free time section this detection time, synchronously completes.
20. touch-screen system as claimed in claim 19 is characterized in that, described memory module also is used in the spectrum signature of described detected signal and the spectrum signature of described display-when causing, be recorded as this detection time displaying time section.
21. touch-screen system as claimed in claim 19, it is characterized in that, described touch chip also comprises driver module, be used for producing after synchronously completing and drive signal, wherein, described second communication module passes through to drive the sampled signal of the described touch-screen of signal acquisition, and described sampled signal is converted to matrix data, judge according to described matrix data whether touch action is arranged on described touch-screen, and corresponding touch action and coordinate are reported to electronic equipment.
22. a touch-screen system is used for electronic equipment, comprises touch-screen and touches chip, it is characterized in that:
Described touch-screen comprises: first communication module is used for being detected signal and sends to described touch chip;
Described touch chip comprises: memory module is used for the spectrum signature of signal of the free time of pre-stored touch-screen;
Second communication module is used for timing, and then receives the detected signal of described touch chip in detection time;
The FFT processing module is used for that described detected signal is carried out FFT and processes, to obtain the spectrum signature of described detected signal;
Judge module, whether the spectrum signature that is used for judging described detected signal is consistent with the spectrum signature of the signal of free time of described touch-screen, wherein said memory module also is used for when the spectrum signature of described detected signal is consistent with the spectrum signature of the signal of described free time, being recorded as the free time section this detection time, synchronously completes.
23. touch-screen system as claimed in claim 22 is characterized in that, described memory module also is used for will being recorded as the displaying time section this detection time when the spectrum signature of the spectrum signature of described detected signal and described driving signal is inconsistent.
24. touch-screen system as claimed in claim 22, it is characterized in that, described touch chip also comprises driver module, be used for producing after synchronously completing and drive signal, wherein, described second communication module passes through to drive the sampled signal of the described touch-screen of signal acquisition, and described sampled signal is converted to matrix data, judge according to described matrix data whether touch action is arranged on described touch-screen, and corresponding touch action and coordinate are reported to electronic equipment.
25. the synchronous method that detects of touch-screen system is used for electronic equipment, wherein, touch-screen is connected with the touch chip, it is characterized in that, touches the frequency of pre-stored driving signal in chip, said method comprising the steps of:
The timing of described touch chip, and judge whether detection time;
If to detection time, touch chip and receive detected signal;
Described touch chip utilizes the frequency of described driving signal to carry out quadrature demodulation to detected signal and obtains signal to be detected;
Described touch chip judges that whether the amplitude of described signal to be detected is more than or equal to the first predetermined threshold value;
If to record this detection time be the driving time section to described touch chip, synchronously completes.
26. method as claimed in claim 25 is characterized in that, if the amplitude of the described signal to be detected of described touch chip judgement less than described the first predetermined threshold value, to record this detection time be the displaying time section to described touch chip.
27. method as claimed in claim 25, it is characterized in that, after synchronously completing, described signal to be detected is converted to matrix data, and judges according to described matrix data whether touch action is arranged on described touch-screen, and corresponding touch action and coordinate are reported to electronic equipment.
28. the synchronous method that detects of touch-screen system is used for electronic equipment, wherein, touch-screen is connected with the touch chip, it is characterized in that, touches the frequency range of pre-stored display in chip, said method comprising the steps of:
The timing of described touch chip, and judge whether detection time;
If to detection time, touch chip and receive detected signal;
Described touch chip utilizes a pair of detected signal of the frequency range one of described display to carry out quadrature demodulation and obtains whole signals to be detected;
Described touch chip judges whether the amplitude of described whole signals to be detected has one at least more than or equal to the second predetermined threshold value;
If the amplitude of described whole signals to be detected has at least one to be recorded as the displaying time section this detection time during more than or equal to described the second predetermined threshold value, synchronously complete.
29. touch-screen system as claimed in claim 1 is characterized in that, if the amplitude of the described whole signals to be detected of described touch chip judgement will be recorded as the driving time section this detection time during all less than described the second predetermined threshold value.
30. method as claimed in claim 28, it is characterized in that, also comprise: after synchronously completing, described detected signal is converted to matrix data, and judges according to described matrix data whether touch action is arranged on described touch-screen, and corresponding touch action and coordinate are reported to electronic equipment.
31. the synchronous method that detects of touch-screen system is used for electronic equipment, wherein, touch-screen is connected with the touch chip, it is characterized in that, touches the spectrum signature of pre-stored driving signal in chip, said method comprising the steps of:
The timing of described touch chip, and judge whether detection time;
If to detection time, touch chip and receive detected signal;
Described touch chip carries out FFT to detected signal to be processed, to obtain the spectrum signature of detected signal;
Described touch chip judges whether the spectrum signature of described detected signal is consistent with the spectrum signature that drives signal;
If to record this detection time be the driving time section to described touch chip, synchronously completes.
32. method as claimed in claim 31 is characterized in that, if the spectrum signature of the described detected signal of described touch chip judgement is inconsistent with the spectrum signature that drives signal, to record this detection time be the displaying time section to described touch chip.
33. method as claimed in claim 31, it is characterized in that, also comprise: wherein described detected signal is converted to matrix data after synchronously completing, and judge according to described matrix data whether touch action is arranged on described touch-screen, and corresponding touch action and coordinate are reported to electronic equipment.
34. the synchronous method that detects of touch-screen system is used for electronic equipment, wherein, touch-screen is connected with the touch chip, it is characterized in that, touches the spectrum signature of pre-stored display in chip, said method comprising the steps of:
The timing of described touch chip, and judge whether detection time;
If to detection time, touch chip and receive detected signal;
Described touch chip carries out FFT to detected signal to be processed, to obtain the spectrum signature of detected signal;
Described touch chip judges whether the spectrum signature of described detected signal is consistent with the spectrum signature of described display;
If inconsistent, to record this detection time be the driving time section to described touch chip, synchronously completes.
35. method as claimed in claim 34 is characterized in that, if the spectrum signature of the described detected signal of described touch chip judgement is consistent with the spectrum signature of display, to record this detection time be the displaying time section to described touch chip.
36. method as claimed in claim 34, it is characterized in that, also comprise: wherein described detected signal is converted to matrix data after synchronously completing, and judge according to described matrix data whether touch action is arranged on described touch-screen, and corresponding touch action and coordinate are reported to electronic equipment.
37. the synchronous method that detects of touch-screen system is used for electronic equipment, wherein, touch-screen is connected with the touch chip, it is characterized in that, touches the frequency range of pre-stored display in chip, said method comprising the steps of:
The timing of described touch chip, and judge whether detection time;
If to detection time, touch chip and receive detected signal;
Described touch chip utilizes a pair of detected signal of the frequency range one of described display to carry out quadrature demodulation and obtains whole signals to be detected;
Described touch chip judges that whether the amplitude of described whole signals to be detected is all less than the 3rd predetermined threshold value;
If all less than described the 3rd predetermined threshold value, to record this detection time be the free time section to described touch chip, synchronously completes.
38. method as claimed in claim 37 is characterized in that, if the amplitude of described whole signals to be detected has one at least more than or equal to described the 3rd predetermined threshold value, to record this detection time be the displaying time section to described touch chip.
39. method as claimed in claim 37, it is characterized in that, described touch chip after synchronously completing output drive signal to described touch-screen, be used for obtaining the sampled signal of described touch-screen, and described sampled signal is converted to matrix data, judge according to described matrix data whether touch action is arranged on described touch-screen, and corresponding touch action and coordinate are reported to electronic equipment.
40. the synchronous method that detects of touch-screen system is used for electronic equipment, wherein, touch-screen is connected with the touch chip, it is characterized in that, touch the frequency range of the signal of the free time of pre-stored described touch-screen in chip, said method comprising the steps of:
The timing of described touch chip, and judge whether detection time;
If to detection time, touch chip and receive detected signal;
Described touch chip utilizes a pair of detected signal of frequency range one of signal of the free time of described touch-screen to carry out quadrature demodulation and obtains whole signals to be detected;
Described touch chip judges that whether the amplitude of described whole signals to be detected is all less than the 4th predetermined threshold value;
If all less than described the 4th predetermined threshold value, to record this detection time be the free time section to described touch chip, synchronously completes.
41. method as claimed in claim 40 is characterized in that, if the amplitude of described whole signals to be detected has one at least more than or equal to described the 4th predetermined threshold value, to record this detection time be the displaying time section to described touch chip.
42. method as claimed in claim 40, it is characterized in that, described touch chip after synchronously completing output drive signal to described touch-screen, be used for obtaining the sampled signal of described touch-screen, and described sampled signal is converted to matrix data, judge according to described matrix data whether touch action is arranged on described touch-screen, and corresponding touch action and coordinate are reported to electronic equipment.
43. the synchronous method that detects of touch-screen system is used for electronic equipment, wherein, touch-screen is connected with the touch chip, it is characterized in that, touches the spectrum signature of pre-stored display in chip, said method comprising the steps of:
The timing of described touch chip, and judge whether detection time;
If to detection time, touch chip and receive detected signal;
Described touch chip carries out FFT to detected signal to be processed, to obtain the spectrum signature of detected signal;
Described touch chip judges whether the spectrum signature of described detected signal is consistent with the spectrum signature of described display;
If inconsistent, to record this detection time be the free time section to described touch chip, synchronously completes.
44. method as claimed in claim 43 is characterized in that, if the spectrum signature of described detected signal is consistent with the spectrum signature of described display, to record this detection time be the displaying time section to described touch chip.
45. method as claimed in claim 43, it is characterized in that, described touch chip after synchronously completing output drive signal to described touch-screen, be used for obtaining the sampled signal of described touch-screen, and described sampled signal is converted to matrix data, judge according to described matrix data whether touch action is arranged on described touch-screen, and corresponding touch action is reported to electronic equipment.
46. the synchronous method that detects of touch-screen system is used for electronic equipment, wherein, touch-screen is connected with the touch chip, it is characterized in that, touch the spectrum signature of the signal of the free time of pre-stored described touch-screen in chip, said method comprising the steps of:
The timing of described touch chip, and judge whether detection time;
If to detection time, touch chip and receive detected signal;
Described touch chip carries out FFT to detected signal to be processed, to obtain the spectrum signature of detected signal;
Described touch chip judges whether the spectrum signature of described detected signal is consistent with the spectrum signature of the signal of the free time of described touch-screen;
If to record this detection time be the free time section to described touch chip, synchronously completes.
47. method as claimed in claim 46 is characterized in that, if the spectrum signature of the signal of the free time of the spectrum signature of described detected signal and described touch-screen is inconsistent, to record this detection time be the displaying time section to described touch chip.
48. method as claimed in claim 46, it is characterized in that, described touch chip after synchronously completing output drive signal to described touch-screen, be used for obtaining the sampled signal of described touch-screen, and described sampled signal is converted to matrix data, judge according to described matrix data whether touch action is arranged on described touch-screen, and corresponding touch action is reported to electronic equipment.
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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014032485A1 (en) * 2012-08-29 2014-03-06 深圳市汇顶科技股份有限公司 Touchscreen system and synchronous detection method thereof
CN106526398A (en) * 2016-10-28 2017-03-22 昆山国显光电有限公司 Detection method and device of capacitive touch screen
CN109508108A (en) * 2017-09-14 2019-03-22 奇景光电股份有限公司 Electronic device, the processing method for receiving circuit and touching signals
CN111880688A (en) * 2020-09-28 2020-11-03 深圳市汇顶科技股份有限公司 Touch chip, touch detection signal processing method and electronic equipment
CN112947793A (en) * 2015-05-22 2021-06-11 触觉实验室股份有限公司 Transmitting and receiving system and method for bidirectional orthogonal signaling sensor
WO2022061832A1 (en) * 2020-09-27 2022-03-31 深圳市汇顶科技股份有限公司 Touch-control chip, processing method for touch-control detection signal, and electronic device
WO2022061875A1 (en) * 2020-09-28 2022-03-31 深圳市汇顶科技股份有限公司 Touch chip, processing method for touch detection signal, and electronic device

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5606346A (en) * 1992-12-22 1997-02-25 Matsushita Electric Industrial Co., Ltd. Coordinate input device
US20080156546A1 (en) * 2006-12-28 2008-07-03 3M Innovative Properties Company Untethered stylus empolying multiple reference frequency communication
CN101324822A (en) * 2007-06-13 2008-12-17 苹果公司 Multiple simultaneous frequency detection
US20090202002A1 (en) * 2008-02-13 2009-08-13 Apple Inc. Reducing errors in data by synchronizing operations with noiseless periods of data transmission
CN101776814A (en) * 2010-01-25 2010-07-14 汕头超声显示器（二厂）有限公司 Embedded touch-sensitive type multi-steady-state liquid crystal device
CN101859039A (en) * 2010-05-28 2010-10-13 友达光电股份有限公司 Touch detection method and flat panel display with embedded type touch panel
CN102402331A (en) * 2010-09-07 2012-04-04 乐金显示有限公司 Display device having touch sensor and method of driving the same
CN102566800A (en) * 2011-12-29 2012-07-11 敦泰科技有限公司 Touch pen, touch detection method and system

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103123549B (en) * 2012-08-29 2015-10-21 深圳市汇顶科技股份有限公司 Touch-screen system and the synchronous method detected thereof

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5606346A (en) * 1992-12-22 1997-02-25 Matsushita Electric Industrial Co., Ltd. Coordinate input device
US20080156546A1 (en) * 2006-12-28 2008-07-03 3M Innovative Properties Company Untethered stylus empolying multiple reference frequency communication
CN101324822A (en) * 2007-06-13 2008-12-17 苹果公司 Multiple simultaneous frequency detection
US20090202002A1 (en) * 2008-02-13 2009-08-13 Apple Inc. Reducing errors in data by synchronizing operations with noiseless periods of data transmission
CN101776814A (en) * 2010-01-25 2010-07-14 汕头超声显示器（二厂）有限公司 Embedded touch-sensitive type multi-steady-state liquid crystal device
CN101859039A (en) * 2010-05-28 2010-10-13 友达光电股份有限公司 Touch detection method and flat panel display with embedded type touch panel
CN102402331A (en) * 2010-09-07 2012-04-04 乐金显示有限公司 Display device having touch sensor and method of driving the same
CN102566800A (en) * 2011-12-29 2012-07-11 敦泰科技有限公司 Touch pen, touch detection method and system

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014032485A1 (en) * 2012-08-29 2014-03-06 深圳市汇顶科技股份有限公司 Touchscreen system and synchronous detection method thereof
CN112947793A (en) * 2015-05-22 2021-06-11 触觉实验室股份有限公司 Transmitting and receiving system and method for bidirectional orthogonal signaling sensor
CN106526398A (en) * 2016-10-28 2017-03-22 昆山国显光电有限公司 Detection method and device of capacitive touch screen
CN106526398B (en) * 2016-10-28 2019-08-27 昆山国显光电有限公司 The detection method and detection device of capacitive touch screen
CN109508108A (en) * 2017-09-14 2019-03-22 奇景光电股份有限公司 Electronic device, the processing method for receiving circuit and touching signals
WO2022061832A1 (en) * 2020-09-27 2022-03-31 深圳市汇顶科技股份有限公司 Touch-control chip, processing method for touch-control detection signal, and electronic device
CN111880688A (en) * 2020-09-28 2020-11-03 深圳市汇顶科技股份有限公司 Touch chip, touch detection signal processing method and electronic equipment
CN111880688B (en) * 2020-09-28 2021-01-22 深圳市汇顶科技股份有限公司 Touch chip, touch detection signal processing method and electronic equipment
WO2022061875A1 (en) * 2020-09-28 2022-03-31 深圳市汇顶科技股份有限公司 Touch chip, processing method for touch detection signal, and electronic device

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