CN106462310B - The method of the touch point of touch chip and touch chip detection touch screen - Google Patents

The method of the touch point of touch chip and touch chip detection touch screen Download PDF

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Publication number
CN106462310B
CN106462310B CN201680001212.9A CN201680001212A CN106462310B CN 106462310 B CN106462310 B CN 106462310B CN 201680001212 A CN201680001212 A CN 201680001212A CN 106462310 B CN106462310 B CN 106462310B
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China
Prior art keywords
touch
driving
channel
driving channel
touch screen
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CN106462310A (en
Inventor
陈小祥
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Shenzhen Goodix Technology Co Ltd
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Shenzhen Huiding Technology Co Ltd
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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
    • G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
    • 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
    • G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
    • G06F3/0446—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes
    • 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
    • G06F3/033—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor
    • G06F3/0354—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor with detection of 2D relative movements between the device, or an operating part thereof, and a plane or surface, e.g. 2D mice, trackballs, pens or pucks
    • G06F3/03547—Touch pads, in which fingers can move on a surface
    • 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
    • G06F3/0418—Control or interface arrangements specially adapted for digitisers for error correction or compensation, e.g. based on parallax, calibration or alignment

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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

The present invention provides the method for a kind of touch chip and the touch point for detecting touch screen.This method comprises: touch chip, in present scanning cycle, to S driving channel output drive signal of touch screen, the touch screen has M driving channel, and M is positive integer, and S is the positive integer less than M；When the touch chip to described S drive channel in each driving channel output drive signal when, the touch chip receive the touch screen N number of induction channels output inductive signal, N is positive integer；The touch chip drives when the output drive signal of channel according to the touch chip to described S, the inductive signal that the received N number of induction channels of the touch chip export, and detects the touch point on the touch screen.The method of the touch point of touch chip of the invention and detection touch screen, can effectively shorten touch screen touch point detection time, to improve the report point rate of touch screen and save the power consumption of touch chip.

Description

The method of the touch point of touch chip and touch chip detection touch screen
Technical field
The present invention relates to the touch chips and touch chip detection touching in electronics field more particularly to electronic product The method for touching the touch point of screen.
Background technique
In existing electronic product, for touch screen, such as capacitive touch screen, required in each scan period Touch chip exports one or many signals to each of touch screen driving line and is driven, i.e., carries out to all driving lines Scanning, and signal is received from the corresponding line of induction, the touch point on touch screen is then detected according to change amount signal, is such as counted Calculate the position that finger touches on touch screen.
The mode that this whole screen all scans needs to consume more sweep time, influences whether the report point rate of touch screen, together When due to sweep time it is long, cause chip power consumption in scanning process big.
Summary of the invention
The present invention provides a kind of method of the touch point of touch chip and detection touch screen, can effectively shorten touch screen The detection time of touch point, to improve the report point rate of touch screen and save the power consumption of touch chip.
In a first aspect, the present invention provides a kind of methods of touch point for detecting touch screen, comprising: touch chip is current To S driving channel output drive signal of touch screen in scan period, the touch screen has M driving channel, and M is positive whole Number, S are the positive integer less than M；When each driving channel output driving that the touch chip drives in channel to described S is believed Number when, the touch chip receive the touch screen N number of induction channels output inductive signal, N is positive integer；The touch-control Chip according to the touch chip to the S driving channel output drive signal when, the touch chip it is received described N number of The inductive signal of induction channels output, detects the touch point on the touch screen.
In the embodiment of the present invention, touch chip only needs to drive channel output drive signal to the part of touch screen, then The inductive signal for receiving whole induction channels output of touch screen, further according to the touch on these inductive signals detection touch screen Point, so that touch chip does not have to carry out full screen scanning to touch screen, so as to effectively shorten the detection of the touch point on touch screen Time, and then the report point rate for improving touch screen and the power consumption for reducing touch chip.
In one possible implementation, S=M/2, K=N, any two drive channel in S driving channel It is non-conterminous.
In one possible implementation, the method also includes: the touch chips to detect that the S driving is logical I-th of driving channel in road in position corresponding on the touch screen there are when touch point, work as described by the touch chip The driving channel output driving for driving channel adjacent in channel, with described i-th is driven to believe to described M in the preceding scan period Number, i is the positive integer less than or equal to S；It is adjacent to i-th of driving channel that the touch chip receives the touch chip Driving channel output drive signal when, N number of induction channels output inductive signal；The touch chip is according to the touching Control chip to when driving the adjacent driving channel output drive signal in channel for described i-th, the received N of the touch chip The inductive signal of a induction channels output, detects the touch point on the touch screen.
In the embodiment of the present invention, only half into all driving channels of touch screen in touch chip each scan period Channel output drive signal is driven, when some driving channel in the driving channel for detecting this half quantity is right on the touchscreen When there is touch point in the position answered, then the driving channel output drive signal adjacent to the driving channel, it is adjacent then to obtain these The inductive signal of all induction channels output of touch screen, is examined further according to these inductive signals when driving channel input drive signal Survey the touch point on touch screen.In this way, finer detection can be carried out to the touch point on touch screen.
In one possible implementation, the method also includes: the touch chip is within next scan period The M-S driving channel output drive signal driven in channel in addition to described S drives channel to described M；The touch-control core Piece receive the touch chip to described M-S drive channel in each driving channel output drive signal when, N number of sense The inductive signal for answering channel to export；The touch chip is according to the touch chip to M-S driving channel output driving When signal, the inductive signal of the received N number of induction channels output of touch chip detects the touch on the touch screen Point.
In the embodiment of the present invention, touch chip is another in all driving channels of next scan period to touch screen Then half driving channel output drive signal receives the inductive signal of all induction channels output of touch screen, according to these senses Induction signal detects the touch point on touch screen, it is ensured that the touch point on this other half corresponding position in driving channel exists Upper a cycle is not detected among then, is scanned in this scan period, so as to reduce the omission factor of touch point, into And improve report point rate.
In one possible implementation, the method also includes: the touch chips to detect the M-S driving J-th of driving channel in channel is in position corresponding on the touch screen there are when touch point, and the touch chip is described The driving channel output driving driven in channel, adjacent with described j-th driving channel in next scan period to described M Signal, j are the positive integer less than or equal to M-S；The touch chip receives the touch chip to j-th of driving channel When adjacent driving channel output drive signal, the inductive signal of N number of induction channels output；The touch chip is according to institute State touch chip to when driving the adjacent driving channel output drive signal in channel for described j-th, the touch chip it is received The inductive signal of N number of induction channels output, detects the touch point on the touch screen.
In the embodiment of the present invention, when some driving channel in the driving channel for detecting this other half quantity is in touch screen When there is touch point in upper corresponding position, then the driving channel output drive signal adjacent to the driving channel, then obtain these The inductive signal of all induction channels output of touch screen, believes further according to these inductions when the input drive signal of adjacent driven channel Number detection touch screen on touch point.In this way, finer detection can be carried out to the touch point on touch screen.
Second aspect, the present invention provides the methods of the touch point of another detection touch screen, comprising: touch chip is being worked as To M driving channel output drive signal of touch screen in the preceding scan period, M is positive integer；When the touch chip is to the M When each driving channel output drive signal in a driving channel, the touch chip receives K induction of the touch screen The inductive signal of channel output, the touch screen have N number of induction channels, and N is positive integer, and K is the positive integer less than N；The touching Control chip according to the touch chip to the M driving channel output drive signal when, the received K of the touch chip The inductive signal of a induction channels output, detects the touch point on the touch screen.
In the embodiment of the present invention, then touch chip is only received to whole driving channel output drive signals of touch screen The inductive signal of the part induction channels output of touch screen makes further according to the touch point on these inductive signals detection touch screen Touch chip does not have to carry out full screen scanning to touch screen, so as to effectively shorten the detection time of the touch point on touch screen, And then it improves the report rate of touch screen and reduces the power consumption of touch chip.
In one possible implementation, K=N/2, any two induction channels not phase in the K induction channels It is adjacent.
In one possible implementation, the method also includes: the touch chips to detect that the M driving is logical I-th of driving channel in road in position corresponding on the touch screen there are when touch point, work as described by the touch chip Drive adjacent with described i-th driving channel in channel and M driving channel is driven in the preceding scan period to described i-th Dynamic channel output drive signal, i are the positive integer less than or equal to M；The touch chip receive the touch chip again to When i-th of driving channel and i-th of driving adjacent driving channel output drive signal in channel, N number of induction The inductive signal of N-K output in channel in addition to the K induction channels；The touch chip is according to the touch chip weight When newly driving channel and i-th of driving adjacent driving channel output drive signal in channel to described i-th, the touch-control The inductive signal of the received N-K induction channels output of chip, detects the touch point on the touch screen.
In the embodiment of the present invention, the half induction channels output of touch screen is only received in touch chip each scan period Inductive signal, when detecting some driving according to these inductive signals there is touch point in corresponding position on the touchscreen in channel, The driving channel output drive signal adjacent with its to the driving channel of touch screen again, it is defeated then to receive the other half induction channels Inductive signal out, further according to the touch point on these inductive signals detection touch screen.In this way, can be to the touch on touch screen Point carries out finer detection.
In one possible implementation, the method also includes: the touch chip is within next scan period To M driving channel output drive signal；It is again logical to described M driving that the touch chip receives the touch chip N-K when each driving channel output drive signal in road, in N number of induction channels in addition to the K induction channels The inductive signal of induction channels output；The touch chip is exported to the M driving channel again according to the touch chip When driving signal, the inductive signal of the received N-K induction channels output of touch chip is detected on the touch screen Touch point.
In one possible implementation, the method also includes: the touch chips to detect that the M driving is logical J-th of driving channel in road is in position corresponding on the touch screen there are when touch point, and the touch chip is under described It is adjacent with j-th of driving channel into j-th of driving channel and M driving channel in one scan period Channel output drive signal is driven, j is the positive integer less than or equal to M-S；The touch chip receives the touch chip weight When newly driving channel and j-th of driving adjacent driving channel output drive signal in channel to described j-th, the K The inductive signal of induction channels output；The touch chip according to the touch chip again to j-th of driving channel and When j-th of driving adjacent driving channel output drive signal in channel, the received K induction of the touch chip lead to The inductive signal of road output, detects the touch point on the touch screen.
In the embodiment of the present invention, when detecting that all drivings are logical according to the inductive signal of this other half induction channels output Some driving in road is when there is touch point in corresponding position on the touchscreen in channel, then the driving adjacent with its to the driving channel Then channel output drive signal again receives other in all induction channels of touch screen in addition to this other half induction channels The inductive signal of induction channels output, further according to the touch point on these inductive signals detection touch screen.In this way, can be to touch Touch point on screen carries out finer detection.
The third aspect, the present invention provides a kind of touch chip, the touch chip include for execute first aspect or The module of method in the possible implementation of any one in first aspect.
Fourth aspect, the present invention provides a kind of touch chip, the touch chip include for execute second aspect or The module of method in the possible implementation of any one in second aspect.
5th aspect, the present invention provides a kind of touch apparatus, the touch chip including the third aspect or the 6th aspect, with And touch screen, the touch screen include driving channel and induction channels, the driving channel is for receiving the touch chip The driving signal of driving unit output, the induction channels are used to incude the coupling letter of the driving signal on the driving channel Number, and exported using the coupled signal as inductive signal to the sensing unit of the touch chip.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, will make below to required in the embodiment of the present invention Attached drawing is briefly described, it should be apparent that, drawings described below is only some embodiments of the present invention, for For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings other Attached drawing.
Fig. 1 is can be using the schematic knot of the touch screen of the method for the touch point of the detection touch screen of the embodiment of the present invention Composition.
Fig. 2 is the schematic flow diagram of the method for the touch point of the detection touch screen of one embodiment of the invention.
Fig. 3 is the schematic flow diagram of the method for the touch point of the detection touch screen of one embodiment of the invention.
Fig. 4 is the schematic flow diagram of the method for the touch point of the detection touch screen of one embodiment of the invention.
Fig. 5 is the schematic flow diagram of the method for the touch point of the detection touch screen of one embodiment of the invention.
Fig. 6 is the schematic flow diagram of the method for the touch point of the detection touch screen of one embodiment of the invention.
Fig. 7 is the schematic flow diagram of the method for the touch point of the detection touch screen of one embodiment of the invention.
Fig. 8 is the schematic flow diagram of the method for the touch point of the detection touch screen of one embodiment of the invention.
Fig. 9 is the schematic flow diagram of the method for the touch point of the detection touch screen of one embodiment of the invention.
Figure 10 is the schematic flow diagram of the method for the touch point of the detection touch screen of one embodiment of the invention.
Figure 11 is the schematic flow diagram of the method for the touch point of the detection touch screen of one embodiment of the invention.
Figure 12 is the signal frame diagram of the touch chip of one embodiment of the invention.
Figure 13 is the signal frame diagram of the touch chip of one embodiment of the invention.
Figure 14 is the signal frame diagram of the touch chip of one embodiment of the invention.
Figure 15 is the signal frame diagram of the touch apparatus of one embodiment of the invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete Site preparation description, it is clear that described embodiments are some of the embodiments of the present invention, instead of all the embodiments.Based on this hair Embodiment in bright, every other implementation obtained by those of ordinary skill in the art without making creative efforts Example, shall fall within the protection scope of the present invention.
In order to make it easy to understand, first description can be using the touch point of the detection touch screen of the embodiment of the present invention on the whole The exemplary diagram of the system architecture of the touch screen and touch chip of method.It should be understood that the touching of the detection touch screen of the embodiment of the present invention The method touched a little is not limited to system architecture shown in FIG. 1, the i.e. method of the touch point of the detection touch screen of the embodiment of the present invention Touch point in addition to can detecte touch screen shown in FIG. 1 can be also used for the touch point of the touch screen of detection other structures.
System shown in FIG. 1 includes touch screen 110 and touch chip 120.Touch screen is referred to as touch panel.It touches Screen 110 can be capacitive touch screen, more specifically can be projection-type mutual capacitance touchscreens.Wherein, touch screen 110 includes M A driving channel and N number of induction channels.Touch chip 120 includes driving circuit 121 and sensor circuit 122.In the present invention, it drives Dynamic circuit is alternatively referred to as driving unit, and sensor circuit is alternatively referred to as sensing unit.
Touch chip 120 is referred to as touch controller or touch detection module comprising driving circuit 121 and touching M driving channel for touching screen 110 is connected, N number of induction channels phase of the sensor circuit 122 and touch screen 110 of touch chip 120 Even.
The driving circuit 121 of touch chip 120 is used for the M driving channel output drive signal to touch screen 110, touch-control The sensor circuit 122 of chip 120 is used to receive or the inductive signal of N number of induction channels of induction touch panel output.
M driving channel of touch screen 110 is used to input the driving signal that the driving circuit 121 of touch chip 120 exports, Some of N number of induction channels of touch screen 110 for the driving circuit 121 in touch chip 120 to touch screen 110 drives channel When the driving signal of output, inductive signal is exported to the sensor circuit 122 of touch chip 120.
Currently, touch chip 120 detect touch screen 110 on touch point when, within a scan period, touch chip 120 driving circuit 121 is touched to one, any one of M driving channel of touch screen 110 driving channel output drive signal Touch the driving channel reception driving signal of screen 110.Electricity is coupled due to driving to exist between channel and induction channels on touch screen Hold, so induction channels can incude the signal from driving channel, i.e., can generate the coupled signal of driving signal in induction channels, The coupled signal is also known as inductive signal in the present invention.Then, N number of induction channels of touch screen 110 are successively to touch chip 120 sensor circuit exports the inductive signal in the induction channels, and the sensor circuit of touch chip 120 receives each induction channels The inductive signal of output.Finally, touch chip 120 can be according to the driving circuit 121 of touch chip 120 to the M of touch screen 110 The received all inductive signals detections of M induction channels after a driving channel difference all output drive signals, from touch screen 110 Touch point on touch screen calculates the position of the touch point.
Assuming that the driving circuit 121 of touch chip 120 drives holding for channel output drive signal to one of touch screen 110 The continuous time is T, and in T time, N number of induction channels of touch screen 110 export to the sensor circuit of touch chip 120 N number of in total Inductive signal.Therefore the driving circuit 121 of touch chip 120 to M driving channel of touch screen 110, all believe respectively by output driving After number, the sensor circuit of touch chip 120 receives M*N inductive signal of the M induction channels output of touch screen 110 in total, Total time is T*M.
The embodiment of the present invention proposes a kind of method of touch point for detecting touch screen, and the schematic flow chart of this method is such as Shown in Fig. 2.It should be understood that the step of Fig. 2 shows the methods of the touch point of detection touch screen or operation, but these steps or operation It is only example, the method for the touch point of detection touch screen of the embodiment of the present invention can also be performed each in other operations or Fig. 2 The deformation of a operation.In addition, each step in Fig. 2 can be executed according to the different sequences presented from Fig. 2, and having can It can not really want to execute all operationss in Fig. 2.
S210, touch chip is in present scanning cycle to S driving channel output drive signal of touch screen, touch screen There is M driving channel.Wherein, M is positive integer, and S is the positive integer less than M.
In this step, S driving channel output driving letter wherein of the touch chip to M driving channel of touch screen Number, without to remaining M-S channel output drive signal.The touch chip can be the touch chip 120 in Fig. 1, the touching Touch the touch screen 110 that shields and can be in Fig. 1.The step specifically can be the driving circuit of touch chip to S drive of touch screen Dynamic channel is sequentially output driving signal.
S is the positive integer less than M, refers to a total of M driving of touch chip channel, and touch chip is only to touch screen Part driving channel output drive signal.
S220, when touch chip to S drive channel in each driving channel output drive signal when, touch chip connects Receive the inductive signal of N number of induction channels output of touch screen.Wherein, N is positive integer.
A total of N number of induction channels of touch screen, thus indicate herein touch chip it is received be all inductions of touch screen The inductive signal of channel output.
When touch chip receives each driving channel output drive signal of the touch chip into S driving channel, touch The inductive signal of all induction channels output of screen, can specifically refer to touch chip into S driving channel of touch screen First driving channel output drive signal, touch chip receive the inductive signal of all induction channels output of touch screen, so Second driving channel output drive signal of the touch chip into S driving channel of touch screen afterwards, touch chip, which receives, to be touched The induction channel of all induction channels output of screen, until the S driving of the touch chip into S driving channel of touch screen Channel output drive signal, touch chip receive the induction channel of all induction channels output of touch screen.
S230, touch chip according to touch chip to S drive channel in driving channel output drive signal when, touch-control The inductive signal of the received N number of induction channels output of chip, detects the touch point on touch screen.
Touch chip detects the touch point on touch screen, specifically can be meter according to the inductive signal received in S220 Calculate the position of the touch point on touch screen.
It is swept it follows that touch chip detects inductive signal used in the touch point on touch screen not by full frame Acquisition is retouched, for full screen scanning, and is only scanned in all inductive signals for needing to scan in full screen scanning Part inductive signal, therefore, the detection time for the touch point that can be effectively shortened on touch screen, and then improve the report point rate of touch screen With the power consumption for reducing touch chip.
In the embodiment of the present invention, optionally, touch chip can be within a scan period only to M driving of touch screen The driving channel output drive signal of half quantity in channel, i.e. S=M/2.Wherein, any two in this S driving channel A driving channel can be in M driving channel of touch screen two-by-two mutually non-conterminous driving channel.As this S driving channel can To be to drive M of touch screen in the driving channel of all odd bits after the sequence of channel, or can be all even bits Drive channel.
In this way, even if the driving letter of touch chip a length of T when being exported to the driving channel that this S drives in channel Number, touch chip receive touch screen all induction channels output inductive signal, touch chip to all S drivings channel all After output drive signal, the received all inductive signals of all induction channels of touch chip from touch screen at most also only have M*N/ 2, the time of whole process is M*T/2.It can thus be seen that the method for the embodiment of the present invention can effectively shorten detection when Between, the quantity for calculating the data of the position of touch point is reduced, to improve the report point rate of touch screen in turn and reduce touch-control The power consumption of chip.
In present example, touch chip is in this S driving channel output drive signal to touch screen and from touch screen All induction channels receive inductive signal, according to these inductive signal detected touch points after, touch chip can be next M-S driving channel output drive signal of the scan period into M driving channel of touch screen in addition to this S drives channel, Then the inductive signal for receiving all induction channels output of touch screen, further according to the touching on these inductive signals detection touch screen It touches a little.The touch point being located on any driving channel that S drives in channel can be allowed in the scan period quilt in this way It detects, to lower the omission factor of touch point.
In the embodiment of the present invention, either touch chip is touched to S driving channel output drive signal of touch screen, reception It touches the inductive signal of all induction channels output of screen and detects touch point or the touch-control of touch screen according to these inductive signals Chip receives the sense of all induction channels output of touch screen to the other M-S driving channel output drive signal of touch screen Induction signal and the touch point that touch screen is detected according to these inductive signals, when touch chip detects that some driving channel is touching On screen when the corresponding touch point position Shang You, touch chip can drive channel with this into M driving channel of touch screen Adjacent driving channel output drive signal, while the inductive signal of all induction channels output of touch screen is received, finally again According to these inductive signal detected touch points, specifically can be according to these inductive signals and between received inductive signal calculate The position of touch point.
It should be understood that described in the embodiment of the present invention some driving channel adjacent driven channel can be directly with the driving The adjacent driving channel in channel, is also possible to the driving channel of indirect neighbor.As the adjacent driven channel in the first driving channel can It can also include driving channel not direct neighbor with first to include the second driving channel with the first driving channel direct neighbor But the driving channel with the second driving channel direct neighbor.
Optionally, touch chip detect some driving channel on the touchscreen the corresponding touch point position Shang You when, touching Control the tool for driving channel output drive signal that chip can be adjacent with this driving channel into M driving channel of touch screen Body step may is that touch chip receives all induction channels outputs to this driving channel output drive signal, touch chip Inductive signal and after detecting that there is touch point in the corresponding position in driving channel on touch screen according to this N inductive signal, to this The adjacent driven channel output drive signal in a driving channel, to carry out follow-up process；Be also possible to: touch chip is driven to S Dynamic channel output drive signal, touch chip receive the inductive signal of all induction channels outputs and are believed according to this N*S induction After number detecting that there is touch point in the corresponding position in driving channel on touch screen, the adjacent driven channel to this driving channel is defeated Driving signal out, to carry out follow-up process.
It should be understood that touch chip only drives channel output drive signal to the part of touch screen, but this S driving channel is simultaneously It is not limited to the driving channel of half quantity on touch screen, even the driving channel of half quantity, is also not necessarily limited to be two neither Adjacent driving channel.If this S driving channel may include all driving channels and touch screen side in the middle part of touch screen Part on edge drives channel, can also be driven according to the arrangement mode at on-fixed interval, or can be according to " random Then " arrangement mode is driven, such as " 1,3,4,7,9,10,13,15,16,19 ... " or " 1,2,5,6,8,10,12,14,16, 17".The present invention drives the range in channel with no restriction to S.
The method of the touch point of the detection touch screen of one embodiment of the invention is discussed in detail below with reference to Fig. 3 and Fig. 4.
As shown in figure 3, having 10 drivings channels, respectively Y1, Y2, Y3, Y4, Y5, Y6, Y7, Y8, Y9 on touch screen 310 And Y10, there are 8 induction channels, respectively X1, X2, X3, X4, X5, X6, X7 and X8 on touch screen 310.Driving channel in Fig. 3 If when indicating touch chip to the driving channel output drive signal, touch chip is received with induction channels intersection with oblique line The inductive signal that the induction channels are received and exported.The round frame of black in Fig. 3 indicates the touch point on touch screen.
In a cycle, touch chip 320 is received and is touched to the driving channel Y1 output drive signal of touch screen 310 The inductive signal of 8 induction channels output of screen 310, according to no touch point on this 8 inductive signal detection driving channel Y1.Touching Chip 320 is controlled to driving channel Y3 output drive signal, the inductive signal of 8 induction channels output is received, is incuded according to this 8 Signal detection drives no touch point on the Y3 of channel.Touch chip 320 receives 8 inductions to driving channel Y5 output drive signal The inductive signal of channel output detects the touch point on driving channel Y5 according to this 8 inductive signals.
Touch chip 320 detects after having touch point on driving channel Y5, to driving channel Y4 output drive signal, receives The inductive signal of 8 induction channels output, according to the touch point of this 8 inductive signal detection Y4；Touch chip 320 is logical to driving Road Y6 output drive signal receives the inductive signal of 8 induction channels output, according to oncontacting on this 8 inductive signal detection Y6 It touches a little.
Touch chip 320 continues the induction letter for driving channel Y7 output drive signal, receiving 8 induction channels outputs Number, according to no touch point on this 8 inductive signal detection driving channel Y7.Touch chip 320 continues to driving channel Y9 output Driving signal, the inductive signal for receiving the output of 8 induction channels, according to oncontacting on this 8 inductive signal detection driving channel Y9 It touches a little.The a cycle of touch detection is to terminate.
From the figure 3, it may be seen that touch chip 320 does not need to can be detected out touch screen to all driving channels output drive signal Touch point on 310.
In next cycle, as shown in figure 4, touch chip 320 is believed to the driving channel Y2 output driving of touch screen 310 Number, the inductive signal of 8 induction channels output of touch screen 310 is received, according on this 8 inductive signal detection driving channel Y2 No touch point.Touch chip 320 receives the inductive signal of 8 induction channels output, root to driving channel Y4 output drive signal The touch point on driving channel Y4 is detected according to this 8 inductive signals.It is identical as appended drawing reference expression identical in Fig. 3 in Fig. 4 Meaning, for sake of simplicity, details are not described herein again.
Touch chip 320 detects after having touch point on driving channel Y4, to driving channel Y3 output drive signal, receives The inductive signal of 8 induction channels output, according to no touch point on this 8 inductive signal detection Y3；Touch chip 320 is to driving Channel Y5 output drive signal receives the inductive signal of 8 induction channels output, according to the touching of this 8 inductive signal detection Y5 It touches a little.
Touch chip 320 continues the induction letter that 8 induction channels outputs are received to driving channel Y6 output drive signal Number, according to no touch point on this 8 inductive signal detection driving channel Y6.Touch chip 320 to driving channel Y8 output driving Signal, the inductive signal for receiving the output of 8 induction channels, according to no touch point on this 8 inductive signal detection driving channel Y8. Touch chip 320 continues the inductive signal for driving channel Y10 output drive signal, receiving the output of 8 induction channels, according to this No touch point on 8 inductive signal detection driving channel Y10.
As shown in Figure 4, touch chip 320 is touched again without can be detected out to all driving channels output drive signal Touch the touch point on screen 310.
Complex chart 3 and Fig. 4 are it is found that when on all driving channels on no touch point, and touch chip is in one cycle only It need to be to the driving channel output drive signal of half quantity, with the increase of the quantity in the driving channel for having touch point, touch-control core Piece needs the quantity in the driving channel of output drive signal to increase.Only if it were not for all having touching on the driving channel of this half quantity Touch a little, then touch chip need the driving quantity of output drive signal be always less than touch screen driving channel total quantity.
In the embodiment of the present invention, touch chip can be in the different scan periods alternately to S driving channel and other M-S A driving channel output drive signal, for example, alternately to odd number drive channel and even number driving channel output drive signal (such as Channel output drive signal is driven to odd number in the odd scan period, drives channel output driving to even number in the even-line interlace period Signal), the inductive signal of N number of induction channels output is then received respectively, is finally calculated on touch screen according to these inductive signals Touch point, the sweep time of each scan period can not only be saved, and the omission factor of touch point can be reduced.
A kind of method that the embodiment of the present invention also proposed touch point for detecting touch screen, the schematic flow chart of this method As shown in Figure 5.It should be understood that Fig. 5 shows the step of method of the touch point of detection touch screen or operation, but these steps or behaviour It is only example, the method for the touch point of detection touch screen of the embodiment of the present invention can also be performed in other operations or Fig. 5 The deformation of each operation.In addition, each step in Fig. 5 can be executed according to the different sequences presented from Fig. 5, and have It may not really want to execute all operationss in Fig. 5.
S510, touch chip is in present scanning cycle to M driving channel output drive signal of touch screen.Wherein, M For positive integer, a total of M driving of touch screen channel is indicated.
S520, when touch chip to M drive channel in each driving channel output drive signal when, touch chip connects Receive the inductive signal of the K induction channels output of touch screen.
Wherein, N is positive integer, indicates a total of N number of induction channels of touch screen；K is the positive integer less than N, indicates touch-control The inductive signal that chip is exported to the part induction channels for receiving touch screen.
S530, touch chip according to touch chip to M driving channel output drive signal when, the received K of touch chip The inductive signal of a induction channels output, detects the touch point on touch screen.
That is to say, the present invention implement in, all driving channel output drive signals from touch chip to touch screen when, only need The inductive signal of receiving portion induction channels output, then can detect the position of the touch point on touch screen.
It follows that touch chip does not have to carry out full screen scanning to touch screen, in the embodiment of the present invention so as to effective Shorten the detection time of the touch point on touch screen, and then the report point rate for improving touch screen and the power consumption for reducing touch chip.
In the embodiment of the present invention, optionally, touch chip can be driven within a scan period to the whole of touch screen When the output drive signal of channel, the induction channels output of the half quantity in N number of induction channels of touch screen can be only received Inductive signal, i.e. K=N/2.Wherein, any two induction channels in this K induction channels can be N number of induction of touch screen In channel two-by-two mutually non-conterminous induction channels.After can be N number of induction channels sequence by touch screen such as this K induction channels All odd bits induction channels, or can be the induction channels of all even bits.
In this way, touch chip is to after all output drive signals of all driving channels, K induction of the touch chip from touch screen All inductive signals of channel reception at most also only have M*N/2.It can thus be seen that the method for the embodiment of the present invention can have Effect shortens the time of detection, reduces the quantity for calculating the data of the position of touch point, to improve the report of touch screen in turn Point rate and the power consumption for reducing touch chip.
In present example, touch chip is in all driving channels output drive signal to touch screen and from touch screen Part induction channels receive inductive signal, according to these inductive signal detected touch points after, touch chip can be next Scan period to all driving channels output drive signal of touch screen, then receives other induction channels output of touch screen Inductive signal, further according to the touch point on these inductive signals detection touch screen.
In the embodiment of the present invention, optionally, when all driving channels output drive signal from touch chip to touch screen, connect When receiving the inductive signal of the K induction channels output of touch screen and detecting the touch point of touch screen according to these inductive signals, if Touch chip detects some driving channel touch point corresponding position Shang You on the touchscreen, then touch chip can be again To the adjacent driven channel output drive signal in the driving channel and the driving channel, other N-K of touch screen are then received The inductive signal of induction channels output specifically can be basis and connect twice finally further according to these inductive signal detected touch points The inductive signal of receipts calculates the position of touch point.
Similarly, optionally, when all driving channels output drive signals from touch chip to touch screen, receive touch screen In addition N-K induction channels output inductive signal and according to these inductive signals detect touch screen touch point when, if touch-control Chip detects some driving channel touch point corresponding position Shang You on the touchscreen, then touch chip can be again to this The adjacent driven channel output drive signal in channel and the driving channel is driven, the other K induction for then receiving touch screen is logical The inductive signal of road output specifically can be finally further according to these inductive signal detected touch points according to received sense twice The position of induction signal calculating touch point.
It should be understood that described in the embodiment of the present invention some driving channel adjacent driven channel can be directly with the driving The adjacent driving channel in channel, is also possible to the driving channel of indirect neighbor.As the adjacent driven channel in the first driving channel can It can also include driving channel not direct neighbor with first to include the second driving channel with the first driving channel direct neighbor But the driving channel with the second driving channel direct neighbor.
It should be understood that touch chip only receives the inductive signal of the part induction channels output of touch screen, but this K induction is logical Road is not limited to the induction channels of half quantity on touch screen, even the induction channels of half quantity, is also not necessarily limited to be two Two non-conterminous induction channels.If this K induction channels may include all induction channels and touch in the middle part of touch screen Part induction channels on platen edge, the present invention to the ranges of K induction channels with no restriction.
The method of the touch point of the detection touch screen of one embodiment of the invention is discussed in detail below with reference to Fig. 6 and Fig. 7.Figure The same or similar meaning is indicated with appended drawing reference identical in Fig. 3 in 6 and Fig. 7, and in order to detect, details are not described herein again.
In a cycle, touch chip 320 is successively believed to driving channel Y1, Y2 and Y3 output driving of touch screen 310 Number, the inductive signal that induction channels X1, X3, X5 and X7 of touch screen 310 are sequentially output then is received, successively basis receives No touch point on inductive signal detection driving channel Y1, Y2 and Y3.Touch chip 320 to driving channel Y4 output drive signal, The inductive signal for receiving induction channels X1, X3, X5 and X7 output detects on driving channel Y4 according to this 4 inductive signals Touch point.Touch chip 320 receives the induction of induction channels X1, X3, X5 and X7 output to driving channel Y5 output drive signal Signal detects the touch point on driving channel Y5 according to this 4 inductive signals.Touch chip 320 is successively to touch screen 310 Drive channel Y6 to Y10 output drive signal, then induction channels X1, X3, X5 and X7 of reception touch screen 310 are sequentially output Inductive signal, successively according to no touch point on the inductive signal detection driving channel Y6 to Y10 received.
Because touch chip 320, which detects on driving channel Y4 and Y5, touch point, as shown in fig. 7, touch chip Again to Y3, Y4, Y5 and Y6 output drive signal, the inductive signal of other 4 induction channels X2, X4, X6 and X8 output is received, According to the touch point on the inductive signal detection touch screen received.
The invention also provides the methods of the touch point of another detection touch screen, and the schematic flow chart of this method is as schemed Shown in 8.It should be understood that Fig. 8 shows the step of method of the touch point of detection touch screen or operation, but these steps or operation are only It is example, the method for the touch point of detection touch screen of the embodiment of the present invention can also be performed each in other operations or Fig. 8 The deformation of operation.In addition, each step in Fig. 8 can be executed according to the different sequences presented from Fig. 8, and it is possible to Do not really want to execute all operationss in Fig. 8.
S810, in present scanning cycle to S driving channel output drive signal of touch screen, touch screen has touch chip M driving channel.
Wherein, M is positive integer, and S is the positive integer less than M, indicates that touch chip only drives channel to the part of touch screen Output drive signal.
S820, when touch chip to S drive channel in each driving channel output drive signal when, touch chip connects The inductive signal of the K induction channels output of touch screen is received, touch screen there are N number of induction channels.
Wherein, N is positive integer, and K is the positive integer less than N, and the part induction that expression touch chip only receives touch screen is logical The inductive signal of road output.
S830, touch chip is in M driving channel of next scan period to touch screen in addition to S driving channel M-S driving channel output drive signal.
S840, when touch chip to M-S drive channel in each driving channel output drive signal when, touch chip Receive the inductive signal of the N-K induction channels output of the touch screen.
S850, touch chip according to touch chip to S driving channel output drive signal when, the received K of touch chip When the inductive signal of a induction channels output and touch chip are to M-S driving channel output drive signal, touch chip connects The inductive signal of the N-K induction channels output of receipts, detects the touch point on touch screen.
In the embodiment of the present invention, part driving channel of the touch chip every time only into all driving channels of touch screen is defeated Driving signal out, also the inductive signal of receiving portion induction channels output, then drives channel to another part next time Output drive signal receives the inductive signal of another part induction channels output, this makes touch chip not have to touch screen scanning The inductive signal of induction channels output, also can detecte out touch point, to contract when upper all driving channel input drive signals When short detection time is with reducing detection power consumption, and having touch point on touch screen, and will not missing inspection touch point.
Moreover, under the scene that touch chip cannot once receive the inductive signal of all induction channels outputs, the present invention The method of embodiment can also obtain all data by several times, to complete the detection of touch point.
Optionally, S=M/2, K=N/2, i.e. touch chip once can be only defeated to the driving channel of touch screen half quantity The inductive signal of the induction channels output of driving signal, reception half quantity out.
Wherein, any two driving channel in this S driving channel can be non-conterminous, any in K induction channels Two induction channels can be non-conterminous.
Optionally, when touch chip detects the corresponding position on the touchscreen of i-th of driving channel in S driving channel When having set touch point, touch chip can be in M driving channel of the present scanning cycle to the touch screen The driving channel for driving channel adjacent with described i-th exports driving signal twice respectively, and i is the positive integer less than or equal to S. Then touch chip receive touch chip to when driving the adjacent driving channel first time output drive signal in channel for i-th, touching The driving channel that the inductive signal and touch chip for touching the K induction channels output of screen drive channel adjacent to i-th is for the second time When output drive signal, the inductive signal of N-K induction channels output.At this point, touch chip also needs to lead to i-th of driving again Road output drive signal, then touch chip receive touch chip again to i-th of driving channel output drive signal when, in addition The inductive signal of N-K induction channels output.Finally, touch chip detects the touch screen according to all inductive signals Touch point.
Similarly, optionally, when touch chip detects j-th of driving channel in M-S driving channel on the touchscreen When the corresponding touch point position Shang You, touch chip can be in next scan period to the M of the touch screen Drive with described j-th the adjacent driving channel in channel to export driving signal twice respectively in driving channel, j be less than or equal to The positive integer of M-S.Then touch chip receives the driving channel output drive for the first time that touch chip drives channel adjacent to j-th When dynamic signal, the inductive signal of N-K induction channels of touch screen output and the touch chip drive adjacent to j-th of driving channel When dynamic second of the output drive signal in channel, the inductive signal that K induction channels export.At this point, touch chip also need again to J-th of driving channel output drive signal, then touch chip receives touch chip again to j-th of driving channel output driving When signal, in addition K induction channels output inductive signal.Finally, touch chip is according to all inductive signals, described in detection The touch point of touch screen.
In the embodiment of the present invention, touch chip can be in each scan period to whole driving channel output channels Then signal alternately receives the induction letter of K induction channels and the output of other N-K induction channels in the continuous scan period Number, such as the inductive signal of odd number induction channels and the output of even number induction channels is alternately received, finally according to these inductive signals The touch point on touch screen is calculated, the sweep time of each scan period can not only be saved, and the leakage of touch point can be reduced Inspection rate.
The method of the touch point of the detection touch screen of another embodiment of the present invention is discussed in detail below with reference to Fig. 9 and 10. Identical meaning is indicated with appended drawing reference identical in Fig. 3 in Fig. 9 and 10, for sake of simplicity, details are not described herein again.
As shown in figure 9, touch chip 320 is believed to the driving channel Y1 output driving of touch screen 310 in a cycle Number, receive the inductive signal of induction channels X1, X3, X5 and X7 output of touch screen 310.Touch chip 320 to driving channel Y3 Output drive signal receives the inductive signal of induction channels X1, X3, X5 and X7 output.Touch chip 320 is to touch screen 310 Channel Y5 output drive signal is driven, the inductive signal of induction channels X1, X3, X5 and X7 output of touch screen 310 is received.Touch-control Chip 320 receives the inductive signal of induction channels X1, X3, X5 and X7 output to driving channel Y7 output drive signal.Touch-control core Piece 320 receives the inductive signal of induction channels X1, X3, X5 and X7 output to driving channel Y9 output drive signal.
As shown in Figure 10, in next cycle, touch chip 320 is believed to the driving channel Y2 output driving of touch screen 310 Number, receive the inductive signal of induction channels X2, X4, X6 and X8 output of touch screen 310.Touch chip 320 to driving channel Y4 Output drive signal receives the inductive signal of induction channels X2, X4, X6 and X8 output.Touch chip 320 is to touch screen 310 Channel Y6 output drive signal is driven, the inductive signal of induction channels X2, X4, X6 and X8 output of touch screen 310 is received.Touch-control Chip 320 receives the inductive signal of induction channels X2, X4, X6 and X8 output to driving channel Y8 output drive signal.Touch-control core Piece 320 receives the inductive signal of induction channels X2, X4, X6 and X8 output to driving channel Y10 output drive signal.
Touch chip 320 is according to the touch point on all inductive signals detection touch screen received in the above process.Two The scanning result in a period is as shown in figure 11.As shown in Figure 11, it does not need to scan all signals and can be detected out touch point.
The touch chip of the embodiment of the present invention is introduced below with reference to Figure 12 to Figure 15.It should be understood that shown in Figure 12 to Figure 15 Touch chip is only example, and the touch chip of the embodiment of the present invention may also include other modules or unit, or including with Figure 12 Intimate module of modules into Figure 15, or do not really want to include all modules of the Figure 12 into Figure 15.
Figure 12 is the schematic block diagram of the touch chip 1200 of one embodiment of the invention.Touch chip 1200 includes driving Unit 1210, processing unit 1220 and sensing unit 1230.
Driving unit 1210, in present scanning cycle, to S driving channel output drive signal of touch screen, The touch screen has M driving channel, and M is positive integer, and S is the positive integer less than M.
Sensing unit 1230, each driving channel output drive signal for being driven in channel when driving unit to S When, the inductive signal of N number of induction channels output of touch screen is received, N is positive integer.
Processing unit 1220, when for according to driving unit to S driving channel output drive signal, the sensing unit The inductive signal of received N number of induction channels output, detects the touch point on the touch screen.
In the embodiment of the present invention, touch chip only needs to drive channel output drive signal to the part of touch screen, then The inductive signal for receiving whole induction channels output of touch screen, further according to the touch on these inductive signals detection touch screen Point, so that touch chip does not have to carry out full screen scanning to touch screen, so as to effectively shorten the detection of the touch point on touch screen Time, and then the report point rate for improving touch screen and the power consumption for reducing touch chip.
Optionally, as one embodiment, S=M/2, any two driving channel is non-conterminous in S driving channel.
Optionally, as one embodiment, the processing unit detects i-th of driving in S driving channel In position corresponding on the touch screen there are when touch point, the driving unit is also used in the present scanning cycle in channel At least one driving channel output drive signal adjacent with described i-th driving channel, i in introversive M driving channel For the positive integer less than or equal to S.
Correspondingly, the sensing unit is also used to receive the drive that the driving unit drives channel adjacent to described i-th When dynamic channel output drive signal, the inductive signal of N number of induction channels output.
Correspondingly, the drive that the processing unit is also used to drive channel adjacent to described i-th according to the driving unit When dynamic channel output drive signal, the inductive signal of the received N number of induction channels output of sensing unit, described in detection Touch point on touch screen.
Optionally, as one embodiment, the driving unit is also used within next scan period drive to described M M-S driving channel output drive signal in dynamic channel in addition to described S drives channel.
Correspondingly, the sensing unit is also used to receive the driving unit to each of M-S driving channel It drives when the output drive signal of channel, the inductive signal that N number of induction channels export.
Correspondingly, the processing unit is also used to according to the driving unit to M-S driving channel output driving When signal, the inductive signal of the received N number of induction channels output of sensing unit detects the touch on the touch screen Point.
Optionally, as one embodiment, the processing unit detects j-th of drive in M-S driving channel In position corresponding on the touch screen there are when touch point, the driving unit is also used in next scanning in dynamic channel At least one the driving channel output driving letter driven in channel, adjacent with described j-th driving channel in period to described M Number, j is the positive integer less than or equal to M-S.
Correspondingly, the sensing unit is also used to receive the drive that the driving unit drives channel adjacent to described j-th When dynamic channel output drive signal, the inductive signal of N number of induction channels output.
Correspondingly, the drive that the processing unit is also used to drive channel adjacent to described j-th according to the driving unit When dynamic channel output drive signal, the inductive signal of the received N number of induction channels output of the sensing unit, described in detection Touch point on touch screen.
It should be understood that Figure 12 shown in the embodiment of the present invention touch chip each unit above and other operation and/or Function is respectively in order to realize the corresponding process for touching point methods for detecting touch screen in Fig. 2, for sake of simplicity, no longer superfluous herein It states.
Figure 13 is the schematic block diagram of the touch chip 1300 of one embodiment of the invention.Touch chip 1300 includes driving Unit 1310, processing unit 1320 and sensing unit 1330.
Driving unit 1310, in present scanning cycle to M driving channel output drive signal of touch screen, M For positive integer.
Sensing unit 1330, each driving channel for driving in channel when the driving unit to described M export When driving signal, the inductive signal of the K induction channels output of the touch screen is received, the touch screen has N number of induction channels, N is positive integer, and K is the positive integer less than N.
Processing unit 1320, when for according to the driving unit to the M driving channel output drive signal, described The inductive signal of the received K induction channels output of sensing unit, detects the touch point on the touch screen.
In the embodiment of the present invention, then touch chip is only received to whole driving channel output drive signals of touch screen The inductive signal of the part induction channels output of touch screen makes further according to the touch point on these inductive signals detection touch screen Touch chip does not have to carry out full screen scanning to touch screen, so as to effectively shorten the detection time of the touch point on touch screen, And then it improves the report rate of touch screen and reduces the power consumption of touch chip.
Optionally, as one embodiment, K=N/2, any two induction channels are non-conterminous in the K induction channels.
Optionally, as one embodiment, the processing unit detects i-th of driving in M driving channel In position corresponding on the touch screen there are when touch point, the driving unit is also used in the present scanning cycle in channel Introversive M driving channel output drive signal, i are the positive integer less than or equal to M.
Correspondingly, the sensing unit is also used to receive the driving unit and drives channel output driving to the m-th When signal, the inductive signal of N-K output in N number of induction channels in addition to the K induction channels.
Correspondingly, the processing unit is also used to drive channel output driving to the m-th according to the driving unit When signal, the inductive signal of the received N-K induction channels output of sensing unit detects the touching on the touch screen It touches a little.
Optionally, as one embodiment, the driving unit is also used within next scan period drive to described M Dynamic channel output drive signal.
Correspondingly, the sensing unit is also used to receive each drive that the driving unit drives in channel to described M N-K induction channels output when dynamic channel output drive signal, in N number of induction channels in addition to the K induction channels Inductive signal.
Correspondingly, the processing unit is also used to be believed according to the driving unit to the M driving channel output driving Number when, the inductive signal of the received N-K induction channels output of the sensing unit detects the touch on the touch screen Point.
Optionally, as one embodiment, the processing unit detects j-th of driving in M driving channel In position corresponding on the touch screen there are when touch point, the driving unit was also used in next scanning week in channel To M driving channel output drive signal in phase, j is the positive integer less than or equal to M-S.
Correspondingly, the sensing unit is also used to receive the driving unit and drives channel output driving to the m-th When signal, the K induction channels output inductive signal.
Correspondingly, the processing unit is also used to according to the driving unit to j-th of driving channel output driving When signal, the inductive signal of the received K induction channels output of the sensing unit, detect the touch on the touch screen Point.
It should be understood that Figure 13 shown in the embodiment of the present invention touch chip each unit above and other operation and/or Function is respectively in order to realize the corresponding process for touching point methods for detecting touch screen in Fig. 5, for sake of simplicity, no longer superfluous herein It states.
Figure 14 is the schematic block diagram of the touch chip 1400 of one embodiment of the invention.Touch chip 1400 includes driving Unit 1410, processing unit 1420 and sensing unit 1430.
Driving unit 1410, in present scanning cycle to S driving channel output drive signal of touch screen, institute Stating touch screen has M driving channel, and M is positive integer, and S is the positive integer less than M.
Sensing unit 1430, each driving channel for driving in channel when the driving unit to described S export When driving signal, the inductive signal of the K induction channels output of the touch screen is received, the touch screen has N number of induction channels, N is positive integer, and K is the positive integer less than N.
Processing unit 1420, when for according to the driving unit to the S driving channel output drive signal, described The inductive signal of the received K induction channels output of sensing unit, detects the touch point on the touch screen.
Driving unit 1410 is also used within next scan period into M driving channel of touch screen except the S Drive M-S driving channel output drive signal outside channel.
Sensing unit 1430 is also used to drive each driving channel in channel defeated to described M-S when the driving unit Out when driving signal, the inductive signal of the N-K induction channels output of the touch screen is received.
When processing unit 1420 is also used to according to the driving unit to the M-S driving channel output drive signal, The inductive signal of the received N-K induction channels output of sensing unit, detects the touch point on the touch screen.
In the embodiment of the present invention, part driving channel of the touch chip every time only into all driving channels of touch screen is defeated Driving signal out, also the inductive signal of receiving portion induction channels output, then drives channel to another part next time Output drive signal receives the inductive signal of another part induction channels output.It, can be with when this not having touch point on touch screen When shortening detection time and reduce detection power consumption, and having touch point on touch screen, and will not missing inspection touch point.
Optionally, as one embodiment, S=M/2, K=N/2, the described S any two driven in channel drive logical Road is non-conterminous, and any two induction channels in the K induction channels are non-conterminous.
Optionally, as one embodiment, the processing unit detects i-th of driving in S driving channel At the position touch point Shang You corresponding on the touch screen, the driving unit is also used in the present scanning cycle in channel The driving channel output driving for driving channel adjacent with described i-th in the M driving channel of the introversive touch screen is believed Number, i is the positive integer less than or equal to S.
Correspondingly, the sensing unit is also used to receive the drive that the driving unit drives channel adjacent to described i-th When dynamic channel output drive signal, the induction of the K induction channels of the touch screen and N-K induction channels output Signal.
Correspondingly, the driving unit is also used to i-th of driving channel again output drive signal.
Correspondingly, the sensing unit is also used to receive the driving unit and exports again to i-th of driving channel When driving signal, the N-K induction channels output inductive signal.
Correspondingly, the drive that the processing unit is also used to drive channel adjacent to described i-th according to the driving unit When dynamic channel output drive signal, the received K induction channels of the sensing unit and the N-K induction channels export Inductive signal, and when re-entering driving signal to i-th of driving channel according to the driving unit, the induction it is single The inductive signal of the received N-K induction channels output of member, detects the touch point of the touch screen.
Optionally, as one embodiment, the processing unit detects j-th of drive in M-S driving channel At the position touch point Shang You corresponding on the touch screen, the driving unit is also used in next scanning in dynamic channel The driving channel for driving channel adjacent with described j-th into the M driving channel of the touch screen in period, which exports, drives Dynamic signal, j are the positive integer less than or equal to M-S；
Correspondingly, the sensing unit is also used to receive the drive that the driving unit drives channel adjacent to described j-th When dynamic channel output drive signal, the induction of the N-K induction channels of the touch screen and K induction channels output Signal.
Correspondingly, the driving unit is also used to j-th of driving channel again output drive signal；
Correspondingly, the sensing unit is also used to receive the driving unit and exports again to j-th of driving channel When driving signal, the inductive signal of the K induction channels output.
Correspondingly, the drive that the processing unit is also used to drive channel adjacent to described j-th according to the driving unit When dynamic channel output drive signal, the received N-K induction channels of the sensing unit and the K induction channels export Inductive signal, and when re-entering driving signal to j-th of driving channel according to the driving unit, the induction it is single The inductive signal of the received K induction channels output of member, detects the touch point of the touch screen.
It should be understood that Figure 14 shown in the embodiment of the present invention touch chip each unit above and other operation and/or Function is respectively in order to realize the corresponding process for touching point methods for detecting touch screen in Fig. 8, for sake of simplicity, no longer superfluous herein It states.
Figure 15 is the schematic block diagram of the touch apparatus 1500 of one embodiment of the invention.Touch chip 1500 includes touching Screen 1510 and touch chip 1520.
Touch screen 1510 includes driving channel and induction channels, and the driving channel is used to receive the drive of the touch chip The driving signal of moving cell output, the induction channels are used to incude the coupled signal of the driving signal on the driving channel, And it is exported using the coupled signal as inductive signal to the sensing unit of the touch chip.
Touch chip 1520 can be touch chip 1200 described in Figure 12, be also possible to touch-control core shown in Figure 13 Piece 1300 can also be touch chip 1400 shown in Figure 14.For sake of simplicity, details are not described herein again.
Those of ordinary skill in the art may be aware that list described in conjunction with the examples disclosed in the embodiments of the present disclosure Member and algorithm steps can be realized with the combination of electronic hardware or computer software and electronic hardware.These functions are actually It is implemented in hardware or software, the specific application and design constraint depending on technical solution.Professional technician Each specific application can be used different methods to achieve the described function, but this realization is it is not considered that exceed The scope of the present invention.
It is apparent to those skilled in the art that for convenience and simplicity of description, the system of foregoing description, The specific work process of device and unit, can refer to corresponding processes in the foregoing method embodiment, and details are not described herein.
In several embodiments provided herein, it should be understood that disclosed systems, devices and methods, it can be with It realizes by another way.For example, the apparatus embodiments described above are merely exemplary, for example, the unit It divides, only a kind of logical function partition, there may be another division manner in actual implementation, such as multiple units or components It can be combined or can be integrated into another system, or some features can be ignored or not executed.Another point, it is shown or The mutual coupling, direct-coupling or communication connection discussed can be through some interfaces, the indirect coupling of device or unit It closes or communicates to connect, can be electrical property, mechanical or other forms.
The unit as illustrated by the separation member may or may not be physically separated, aobvious as unit The component shown may or may not be physical unit, it can and it is in one place, or may be distributed over multiple In network unit.It can select some or all of unit therein according to the actual needs to realize the mesh of this embodiment scheme 's.
It, can also be in addition, the functional units in various embodiments of the present invention may be integrated into one processing unit It is that each unit physically exists alone, can also be integrated in one unit with two or more units.
It, can be with if the function is realized in the form of SFU software functional unit and when sold or used as an independent product It is stored in a computer readable storage medium.Based on this understanding, technical solution of the present invention is substantially in other words The part of the part that contributes to existing technology or the technical solution can be embodied in the form of software products, the meter Calculation machine software product is stored in a storage medium, including some instructions are used so that a computer equipment (can be a People's computer, server or network equipment etc.) it performs all or part of the steps of the method described in the various embodiments of the present invention. And storage medium above-mentioned includes: that USB flash disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), arbitrary access are deposited The various media that can store program code such as reservoir (RAM, Random Access Memory), magnetic or disk.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any Those familiar with the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should all contain Lid is within protection scope of the present invention.Therefore, protection scope of the present invention should be subject to the protection scope in claims.

Claims (17)

1. a kind of touch chip characterized by comprising
Driving unit is used for: in present scanning cycle, to S driving channel output drive signal of touch screen, the touch Screen has M driving channel, and M is positive integer, and S is the positive integer less than M；
Sensing unit is used for: when each driving channel output drive signal that the driving unit drives in channel to described S When, the inductive signal of N number of induction channels output of the touch screen is received, N is positive integer；
Processing unit is used for: when according to the driving unit to the S driving channel output drive signal, the induction is single The inductive signal of the received N number of induction channels output of member, detects the touch point on the touch screen；
When the processing unit detects that i-th of driving channel in S driving channel is corresponding on the touch screen Position there are when touch point, the driving unit be also used in the present scanning cycle into M driving channel with At least one adjacent driving channel output drive signal of i-th of driving channel, i is the positive integer less than or equal to S；
Wherein, the sensing unit is also used to receive the driving channel that the driving unit drives channel adjacent to described i-th When output drive signal, the inductive signal of N number of induction channels output；
The processing unit is also used to: being exported according to the driving channel that the driving unit drives channel adjacent to described i-th When driving signal, the inductive signal of the received N number of induction channels output of sensing unit is detected on the touch screen Touch point.
2. touch chip according to claim 1, which is characterized in that S=M/2, any two in S driving channel Drive channel non-conterminous.
3. touch chip according to claim 1 or 2, which is characterized in that the driving unit is also used in next scanning The M-S driving channel output drive signal driven in channel in addition to described S drives channel in period to described M；
The sensing unit is also used to receive each driving channel that the driving unit drives in channel to described M-S and exports When driving signal, the inductive signal of N number of induction channels output；
It is described when the processing unit is also used to according to the driving unit to the M-S driving channel output drive signal The inductive signal of the received N number of induction channels output of sensing unit, detects the touch point on the touch screen.
4. touch chip according to claim 3, feature is being, the processing unit detects the M-S drive J-th of driving channel in dynamic channel in position corresponding on the touch screen there are when touch point, also use by the driving unit In drive in channel within next scan period to described M, with described j-th adjacent at least one in driving channel Channel output drive signal is driven, j is the positive integer less than or equal to M-S；
The sensing unit is also used to receive the driving channel output that the driving unit drives channel adjacent to described j-th and drives When dynamic signal, the inductive signal of N number of induction channels output；
The processing unit is also used to be driven according to the driving channel output that the driving unit drives channel adjacent to described j-th When dynamic signal, the inductive signal of the received N number of induction channels output of the sensing unit, detect the touching on the touch screen It touches a little.
5. a kind of touch chip characterized by comprising
Driving unit is used for: in present scanning cycle, to M driving channel output drive signal of touch screen, M is positive whole Number；
Sensing unit is used for: when each driving channel output drive signal that the driving unit drives in channel to described M When, the inductive signal of the K induction channels output of the touch screen is received, the touch screen there are N number of induction channels, and N is positive whole Number, K are the positive integer less than N；
Processing unit is used for: when according to the driving unit to the M driving channel output drive signal, the induction is single The inductive signal of the received K induction channels output of member, detects the touch point on the touch screen；
The processing unit detects the corresponding position on the touch screen of i-th of driving channel in M driving channel It sets there are when touch point, the driving unit is also used in the present scanning cycle to i-th of driving channel and institute Driving channel output drive signal adjacent with described i-th driving channel in M driving channel is stated, i is less than or equal to M's Positive integer；
Wherein, the sensing unit is also used to receive the driving unit to i-th of driving channel and i-th of driving When the adjacent driving channel output drive signal in channel, N-K in N number of induction channels in addition to the K induction channels The inductive signal of output；
The processing unit is also used to: according to the driving unit to i-th of driving channel and i-th of driving channel When adjacent driving channel output drive signal, the induction letter of the received N-K induction channels output of sensing unit Number, detect the touch point on the touch screen.
6. touch chip according to claim 5, which is characterized in that K=N/2, any two in the K induction channels Induction channels are non-conterminous.
7. touch chip according to claim 5 or 6, which is characterized in that the driving unit is also used to sweep next It retouches in the period to M driving channel output drive signal；
The sensing unit is also used to receive the driving unit and drives to the described M each driving channel driven in channel output When dynamic signal, the inductive signal of the N-K induction channels output in N number of induction channels in addition to the K induction channels；
When the processing unit is also used to according to the driving unit to the M driving channel output drive signal, the sense The inductive signal for answering the received N-K induction channels output of unit, detects the touch point on the touch screen.
8. touch chip according to claim 7, feature is being, the processing unit detects the M driving In position corresponding on the touch screen there are when touch point, the driving unit is also used in j-th of driving channel in channel It is logical with described j-th driving into j-th of driving channel and M driving channel within next scan period The adjacent driving channel output drive signal in road, j are the positive integer less than or equal to M-S；
The sensing unit is also used to receive the driving unit to j-th of driving channel and j-th of driving channel When adjacent driving channel output drive signal, the inductive signal that the K induction channels export；
The processing unit is also used to according to the driving unit to j-th of driving channel and j-th of driving channel When adjacent driving channel output drive signal, the inductive signal that the received K induction channels of the sensing unit export, Detect the touch point on the touch screen.
9. a kind of touch apparatus, which is characterized in that including described in any one of touch screen and claim 1 to claim 8 Touch chip；
The touch screen includes driving channel and induction channels, and the driving channel is used to receive the driving list of the touch chip The driving signal of member output, the induction channels are used to incude the coupled signal of the driving signal on the driving channel, and will The coupled signal is exported as inductive signal to the sensing unit of the touch chip.
10. a kind of method for the touch point for detecting touch screen characterized by comprising
Touch chip is in present scanning cycle, and to S driving channel output drive signal of touch screen, the touch screen has M A driving channel, M are positive integer, and S is the positive integer less than M；
When the touch chip to described S drive channel in each driving channel output drive signal when, the touch-control core Piece receives the inductive signal of N number of induction channels output of the touch screen, and N is positive integer；
The touch chip according to the touch chip to the S driving channel output drive signal when, the touch chip The inductive signal of received N number of induction channels output, detects the touch point on the touch screen；
The touch chip detects the corresponding position on the touch screen of i-th of driving channel in S driving channel Set there are when touch point, the touch chip in the present scanning cycle into M driving channel with described i-th The driving channel output drive signal for driving channel adjacent, i are the positive integer less than or equal to S；
The touch chip receives the driving channel output drive signal that the touch chip drives channel adjacent to described i-th When, the inductive signal of N number of induction channels output；
The driving channel output drive signal that the touch chip drives channel adjacent according to the touch chip to described i-th When, the inductive signal of the received N number of induction channels output of touch chip detects the touch point on the touch screen.
11. according to the method described in claim 10, any two are driven in S driving channel it is characterized in that, S=M/2 Dynamic channel is non-conterminous.
12. method described in 0 or 11 according to claim 1, which is characterized in that the method also includes:
The M-S that the touch chip drives in channel in addition to described S drives channel within next scan period to described M A driving channel output drive signal；
The touch chip receives the touch chip to the described M-S each driving channel output driving driven in channel letter Number when, N number of induction channels output inductive signal；
The touch chip according to the touch chip to the M-S driving channel output drive signal when, the touch-control core The inductive signal of the received N number of induction channels output of piece, detects the touch point on the touch screen.
13. according to the method for claim 12, feature is being, the method also includes:
The touch chip detects that j-th of driving channel in M-S driving channel is corresponding on the touch screen Position there are when touch point, the touch chip within next scan period into M driving channel, with it is described The adjacent driving channel output drive signal in j-th of driving channel, j is the positive integer less than or equal to M-S；
The touch chip receives the driving channel output drive signal that the touch chip drives channel adjacent to described j-th When, N number of induction channels output inductive signal；
The driving channel output drive signal that the touch chip drives channel adjacent according to the touch chip to described j-th When, the received N number of induction channels output of the touch chip inductive signal, detect the touch point on the touch screen.
14. a kind of method for the touch point for detecting touch screen characterized by comprising
For touch chip to M driving channel output drive signal of touch screen in present scanning cycle, M is positive integer；
When the touch chip to described M drive channel in each driving channel output drive signal when, the touch-control core Piece receives the inductive signal of the K induction channels output of the touch screen, and the touch screen has N number of induction channels, and N is positive whole Number, K are the positive integer less than N；
The touch chip according to the touch chip to the M driving channel output drive signal when, the touch chip The inductive signal of the received K induction channels output, detects the touch point on the touch screen；
The touch chip detects the corresponding position on the touch screen of i-th of driving channel in M driving channel It sets there are when touch point, the touch chip is in the present scanning cycle to i-th of driving channel and the M drive The driving channel output drive signal adjacent with described i-th driving channel in dynamic channel, i are the positive integer less than or equal to M；
The touch chip receives the touch chip again to i-th of driving channel and i-th of driving channel phase When adjacent driving channel output drive signal, N-K in N number of induction channels in addition to the K induction channels is exported Inductive signal；
The touch chip is according to the touch chip again to i-th of driving channel and i-th of driving channel phase When the driving channel output drive signal of neighbour, the inductive signal of the received N-K induction channels output of touch chip, Detect the touch point on the touch screen.
15. according to the method for claim 14, which is characterized in that K=N/2, any two sense in the K induction channels Answer channel non-conterminous.
16. method according to claim 14 or 15, which is characterized in that the method also includes:
The touch chip is within next scan period to M driving channel output drive signal；
The touch chip receives each driving channel output driving that the touch chip drives in channel to described M again When signal, the inductive signal of the N-K induction channels output in N number of induction channels in addition to the K induction channels；
The touch chip according to the touch chip again to the M driving channel output drive signal when, the touch-control The inductive signal of the received N-K induction channels output of chip, detects the touch point on the touch screen.
17. according to the method for claim 16, feature is being, the method also includes:
The touch chip detects the corresponding position on the touch screen of j-th of driving channel in M driving channel It sets there are when touch point, the touch chip is within next scan period to j-th of driving channel and the M Driving channel output drive signal adjacent with described j-th driving channel in channel is driven, j is just less than or equal to M-S Integer；
The touch chip receives the touch chip again to j-th of driving channel and j-th of driving channel phase When adjacent driving channel output drive signal, the inductive signal that the K induction channels export；
The touch chip is according to the touch chip again to j-th of driving channel and j-th of driving channel phase When adjacent driving channel output drive signal, the inductive signal of the received K induction channels output of the touch chip, examine Survey the touch point on the touch screen.
CN201680001212.9A 2016-09-28 2016-09-28 The method of the touch point of touch chip and touch chip detection touch screen Active CN106462310B (en)

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CN108920026B (en) * 2018-05-03 2021-06-22 业成科技（成都）有限公司 Touch screen scanning method, computer device and storage medium
CN110362225B (en) * 2019-06-18 2024-01-30 腾讯科技(成都)有限公司 Touch screen sampling frequency control method and device, medium and electronic equipment
CN112631457A (en) * 2020-12-21 2021-04-09 厦门天马微电子有限公司 Display panel and display device
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