CN112114693B - Signal pipeline processing method of sensing device and sensing device - Google Patents
Signal pipeline processing method of sensing device and sensing device Download PDFInfo
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- CN112114693B CN112114693B CN201910542042.0A CN201910542042A CN112114693B CN 112114693 B CN112114693 B CN 112114693B CN 201910542042 A CN201910542042 A CN 201910542042A CN 112114693 B CN112114693 B CN 112114693B
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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
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0416—Control or interface arrangements specially adapted for digitisers
Abstract
A signal processing method of a sensing device comprises the steps of performing a touch detection procedure of a plurality of intervals of a sensing area at each phase to generate a sensing signal, temporarily storing the generated sensing signal, performing convolution calculation of the generated sensing signal to obtain an operation result, and replacing the corresponding sensing signal with the operation result.
Description
Technical Field
The present application relates to touch sensing technology, and more particularly, to a signal pipeline processing method of a sensing device and the sensing device.
Background
In order to improve the convenience in use, more and more electronic devices use a touch screen (touch screen) as an operation interface, so that a user can directly click a screen on the touch screen to perform an operation, thereby providing a more convenient and humanized operation mode. The touch screen mainly comprises a display for providing a display function and a sensing device for providing a touch function.
The sensing device can be divided into a resistive sensing device, a capacitive sensing device, an inductive sensing device and an optical sensing device in a sensing manner. Take a capacitive sensing device as an example. In the sensing process, when the sensing device detects the change of the capacitance value of a certain coordinate position, the sensing device judges that the coordinate position is touched by a user. Therefore, during operation, the sensing device stores an untouched capacitance value for each coordinate position, and when the latest capacitance value is received later, the sensing device judges whether the position corresponding to the latest capacitance value is touched or not by comparing the latest capacitance value with the untouched capacitance value.
Disclosure of Invention
However, the operation of the sensing device is usually to complete the full-scale touch detection procedure and then to perform the signal calculation procedure, and the sensing signal of the full panel needs to perform multiple signal processing, so that the processing operation efficiency is limited, and more transient storage space is used, so that the overall benefit still has room for improvement.
A signal processing method of a sensing device comprises the steps of performing a touch detection procedure of a first sensing position of a plurality of sections of a sensing area in a first period of a first phase to generate a plurality of sensing signals of the first sensing position, temporarily storing the plurality of sensing signals of the first sensing position, performing convolution calculation of the plurality of sensing signals of the first sensing position in a second period of the first phase to obtain a first operation result, replacing the corresponding plurality of sensing signals with the first operation result, performing a touch detection procedure of a sensing point of a second sensing position of the plurality of sections in the first period of the second phase to generate a plurality of sensing signals of the second sensing position, temporarily storing the plurality of sensing signals of the second sensing position, performing convolution calculation of the plurality of sensing signals of the second sensing position in the second period of the second phase to obtain a second operation result, and replacing the corresponding plurality of sensing signals with the second operation result. Wherein the second period of the first phase is subsequent to the first period of the first phase. The second period of the second phase is subsequent to the first period of the second phase. And the first edge of the second phase is later than the first edge of the first phase.
A sensing device, comprising: a signal sensor, a driving detection unit, a storage unit and a control unit. The signal sensor comprises a sensing area which is divided into a plurality of sections, and each section is provided with a plurality of sensing points. The driving detection unit is electrically connected with the signal sensor, and the control unit is electrically connected with the driving detection unit and the storage unit. Wherein the control unit performs: in a first period of a first phase, performing a touch detection procedure of a first reading position of a plurality of intervals of a sensing area to generate a plurality of sensing signals of the first reading position, temporarily storing the plurality of sensing signals of the first reading position, in a second period of the first phase, performing convolution calculation of the plurality of sensing signals of the first reading position to obtain a first operation result, replacing the corresponding plurality of sensing signals with the first operation result, in a first period of a second phase, performing a touch detection procedure of a sensing point of a second reading position of the plurality of intervals to generate a plurality of sensing signals of the second reading position, temporarily storing the plurality of sensing signals of the second reading position, in a second period of the second phase, performing convolution calculation of the plurality of sensing signals of the second reading position to obtain a second operation result, and replacing the corresponding plurality of sensing signals with the second operation result. Wherein the second period of the first phase is subsequent to the first period of the first phase. The second period of the second phase is subsequent to the first period of the second phase. And the first edge of the second phase is later than the first edge of the first phase.
In summary, according to the signal pipeline processing method and the sensing device of the present application, convolution operation is used to make the signal more stable and better in quality, and signal measurement and signal processing are alternately performed for the local sensing region, so as to avoid waiting for driving of the sensing region. In addition, according to the signal pipeline processing method and the sensing device of the application, the operation result of convolution operation is utilized to replace the sensing result (sensing signal) of all the reading positions of the sensing area to carry out the subsequent steps or application, so that the application energy of the sensing result of the reading position obtained by the sensing device is more flexible. In addition, according to the signal pipeline processing method of the sensing device and the sensing device of the application, the storage space of the part can be released after the operation result of the convolution operation of each local sensing area is obtained, so that the storage space can be used more effectively.
Drawings
FIG. 1 is a schematic diagram of a sensing device according to an embodiment of the application.
FIG. 2 is a schematic diagram of a sensing region of the sensing device of FIG. 1.
FIG. 3 is a schematic diagram illustrating an exemplary signal operation of the sensing device of FIG. 1.
FIG. 4 is a schematic diagram of an exemplary read clock of the sensing device of FIG. 1.
FIG. 5 is a flow chart of a signal pipeline processing method of a sensing device according to an embodiment of the application.
FIG. 6 is a schematic diagram of another example of a read clock of the sensing device of FIG. 1.
FIG. 7 is a schematic diagram of another example of signal operation of the sensing device of FIG. 1.
FIG. 8 is a schematic diagram of a signal operation of the sensing device of FIG. 1.
Description of the reference numerals
12: the signal processing circuit 14: signal sensor
121: the drive detection unit 123: control unit
125: storage units X1 to Xn: driving electrode wire
Y1 to Ym: an induction electrode line AA: sensing area
A11 to A15: intervals P (1, 1) to P (n, m): sensing point
P1 to Pk: phases S11 to S15: sensing signal
C11 to C1k: calculation result EV: feature matrix
D1: first direction D2: second direction
A21 to a24: interval a31 to a36: interval of
21-2 (3 k): step (a)
Detailed Description
The application relates to a signal pipeline processing method of a sensing device and the sensing device. While in the description this application has been described in connection with what is presently considered to be the most practical and preferred mode of carrying out the application, it is to be understood that the application may be embodied in many different forms and should not be limited to the specific embodiments described below or to the specific ways in which the features described below may be implemented. In other instances, well-known details will not be described or discussed in detail to avoid obscuring the present application.
The signal pipeline processing method of the sensing device according to any embodiment of the application is applicable to a sensing device such as, but not limited to, a touch panel, an electronic drawing board, a handwriting board, etc. In some embodiments, the sensing device may also be integrated with the display as a touch screen. Moreover, the touch operation of the sensing device may be performed by a hand, a stylus, or a sensing element such as a stylus.
Referring to fig. 1, the sensing device includes a signal processing circuit 12 and a signal sensor 14. The signal sensor 14 is connected to the signal processing circuit 12. The signal sensor 14 may be a resistive sensor, a capacitive sensor, an inductive sensor, an optical sensor, or the like. The signal processing circuit 12 mainly controls the operation of the signal sensor 14 and various signal processing and judgment of the sensing signal generated by the signal sensor 14. Taking a capacitive sensor as an example, the signal sensor 14 includes a plurality of electrodes (e.g., driving electrode lines X1 to Xn and sensing electrode lines Y1 to Ym that are staggered with each other) that are staggered. Wherein n and m are positive integers. n may or may not be equal to m. From a top view, the driving electrode lines X1 to Xn and the sensing electrode lines Y1 to Ym define a plurality of sensing points P (1, 1) to P (n, m), as shown in fig. 2. In other words, the signal sensor 14 has a sensing area AA for distributing sensing points P (1, 1) to P (n, m). Each sensing point in the sensing area AA is a sensing position, and the sensing area AA is capable of detecting whether a touch event occurs.
The signal processing circuit 12 includes a drive detection unit 121, a control unit 123, and a storage unit 125. The control unit 123 is coupled to the driving detection unit 121 and the storage unit 125. The drive detection unit 121 includes a drive element and a detection element. The driving element and the detecting element may be integrated into a single element, or may be realized by two elements, depending on the current situation in design. The driving element can drive each sensing point by a driving signal, and the detecting element can measure the sensing signals of the sensing points P (1, 1) to P (n, m). Here, the control unit 123 can control the operation of the driving detection unit 121 and determine the capacitance change of the sensing points P (1, 1) to P (n, m), so as to report the touch point to the back-end circuit according to the capacitance change for performing a corresponding operation.
Here, after the sensing signal is generated, the control unit 123 receives the driving detection unit 121 generated by the detection element of the driving detection unit 121, and performs convolution operation of the sensing signal to make the signal (the processed sensing signal) more stable and better in quality, and then performs the application of the sensing result of the subsequent sensing device. The storage unit 125 can temporarily store the operation result of the convolution operation. The signal pipeline processing procedure of the sensing device is further described below.
Referring to fig. 1 to 3, the control unit 123 can divide the sensing area AA of the signal sensor 14 into a plurality of sections a11 to a15 in advance. Wherein, each zone has a plurality of sensing readers (i.e. a plurality of sensing points P (1, 1) to P (n, m)). The control unit 123 divides the signal read clock Sc into a plurality of phases (phase) P1 to Pk (as shown in fig. 4), and reads one sensing point in each of the sections a11 to a15 at the same time. Wherein k is a positive integer.
Referring to fig. 1 to 5, in the first period of the first phase P1, the driving detection unit 121 performs a touch detection process of the first reading position of the sections a11 to a15 to generate the sensing signals S11 to S15 of the first reading position (step 21). In some embodiments, in the first period of the first phase P1, the driving detection unit 121 obtains the sensing signals S11-S15 of the corresponding sensing points (the first reading positions) of each section a 11-a 15.
The control unit 123 receives and temporarily stores the sensing signals S11 to S15 of the first reading position in the storage unit 125 (step 22).
In a second period of the first phase P1, the control unit 123 performs convolution calculation on the plurality of sensing signals S11 to S15 at the first reading position to obtain a first operation result C11, and replaces the corresponding sensing signals S11 to S15 with the first operation result C11 (step 23). Wherein the second period of the first phase P1 is after the first period of the first phase P1.
For example, in the first phase P1, the control unit 123 controls the driving detection unit 121 to read the sensing signals S11 to S15 of the relevant sensing readers (first reading positions) of each section a11 to a15 into the bank register of the storage unit 125. Then, the control unit 123 selects one feature matrix EV from the plurality of feature matrices according to the purpose, and performs convolution (convolution) calculation of partial signals on feature values corresponding to the sensing signals S11 to S15 read in the first reading position in the feature matrix EV to obtain a first calculation result C11 of the convolution calculation of partial signals of the first phase P1. In other words, the control unit 123 convolves the plurality of feature values in the selected feature matrix EV with the plurality of sensing signals S11 to S15 at the first reading position, respectively. The feature matrix EV is preferably an odd matrix.
In the first period of the second phase P2, the driving detection unit 121 performs a touch detection procedure of the second read position of the sections a11 to a15 to generate the sensing signals S11 to S15 of the second read position (step 24). In some embodiments, in the first period of the second phase P2, the driving detection unit 121 obtains the sensing signals S11-S15 of the sensing point (the second reading position) corresponding to each of the intervals a 11-a 15.
The control unit 123 receives and stores the sensing signals S11 to S15 of the second reading position in the storage unit 125 (step 25).
In a second period of the second phase P2, the control unit 123 performs convolution calculation on the plurality of sensing signals S11 to S15 of the second reading position to obtain a second operation result C12, and replaces the corresponding plurality of sensing signals S11 to S15 with the second operation result C12 (step 26). Wherein the second period of the second phase P2 is after the first period of the second phase P2.
For example, at the second phase P2, the control unit 123 controls the driving detection unit 121 to read the sensing signals S11 to S15 of the next relevant sensing reader (second reading position) of each section a11 to a15 into the bank register of the storage unit 125. Then, the control unit 123 selects one feature matrix EV from the plurality of feature matrices according to the purpose, and performs convolution (convolution) calculation of partial signals on feature values corresponding to the sensing signals S11 to S15 of the read second reading position in the feature matrix EV to obtain a second calculation result C12 of the convolution calculation of partial signals of the second phase P2. The feature matrix EV is preferably an odd matrix.
By analogy, the above steps are repeatedly performed until the reading of the sensing signals S11 to S15 at the kth reading position of the intervals a11 to a15 is completed (step 2 (3 k-2)), temporary storage (step 2 (3 k-1)), and the convolution calculation of the partial signals according to the feature matrix EV are performed to obtain the kth calculation result C1k of the convolution calculation of the partial signals of the kth phase Pk, and the corresponding plurality of sensing signals S11 to S15 are replaced with the kth calculation result C1k (step 2 (3 k)). In this way, the control unit 123 can obtain the sensing signals of all the reading positions of all the sections a11 to a15 of the sensing area AA and the calculation results C11 to C1k of the convolution calculation thereof.
Here, the convolution calculation is to perform operations such as a group overlap operation with a plurality of parameters and surrounding points to generate one point. The calculation formula of the convolution calculation is well known in the art, and is not described in detail.
It should be understood that the execution order of the steps is not limited to the above description, and the execution order may be appropriately configured according to the execution content of the steps.
In some embodiments, the first edge of any phase is earlier than the first edge of the next phase, for example: the first edge of the first phase P1 is earlier than the first edge of the second phase P2. The first edge of the second phase P2 is earlier than the first edge of the third phase P3, and so on, the first edge of the k-1 phase is earlier than the first edge of the k-th phase Pk, as shown in fig. 4.
In one example, the second edge of any phase can be later than the first edge of the next phase, for example: the second edge of the first phase P1 is earlier than the first edge of the second phase P2. The second edge of the second phase P2 is later than the first edge of the third phase P3, and so on, the second edge of the k-1 phase is earlier than the first edge of the k-th phase Pk, as shown in fig. 4.
The first edge and the second edge of each phase can be a rising edge and a falling edge, respectively, but the application is not limited thereto, and can be reversed.
In some embodiments, after each phase reads the sensing signal and stores, the control unit 123 performs convolution calculation to obtain the calculation result of the convolution calculation of the partial signal (one read position of the interval a 11-a 15); the control unit 123 can perform signal storage of the next phase while reading the sensing signal of the next phase; in the next phase, the sensing signal is read, and the convolution calculation and stored value update of the phase are performed. For example, in the application of the signal pipeline processing method of the sensing device of any embodiment, the overall signal processing time is the phase value time of (k+1) +1+1, and the required space of the overall storage unit 125 is (1 or 2) ×phase buffer+ (1 or 2) ×map buffer (the storage space for converting the sensing signal into the position on the sensing area AA and storing the sensing signal) + (1 or 2) ×convolution buffer.
In one example, the second edge of any phase can be substantially equal to the first edge of the next phase, such as: the second edge of the first phase P1 is substantially equal to the first edge of the second phase P2. The second edge of the second phase P2 is later than the first edge of the third phase P3, and so on, the second edge of the k-1 phase is substantially equal to the first edge of the k-th phase Pk, as shown in fig. 6.
In one embodiment, the sensing area AA can be divided into the sections a11 to a15 along the first direction D1 and the second direction D2, as shown in fig. 3. The first direction D1 corresponds to the extending direction of the driving electrode lines X1 to Xn, and the second direction D2 corresponds to the extending direction of the sensing electrode lines Y1 to Ym.
In another embodiment, the sensing area AA can be divided into the sections a21 to a24 along the second direction D2 in the first direction D1, as shown in fig. 7. The first direction D1 corresponds to the extending direction of the electrode lines Y1 to Ym, and the second direction D2 corresponds to the extending direction of the driving electrode lines X1 to Xn. Similarly, in the first period of the first phase P1, the driving detection unit 121 obtains the sensing signals S21 to S24 of the corresponding first reading position of each section a21 to a24 (step 21) and stores the signals temporarily (step 22). In the second period of the first phase P1, the control unit 123 performs convolution calculation on the plurality of sensing signals S21 to S24 at the first reading position to obtain a first operation result C21, and replaces the corresponding sensing signals S21 to S24 with the first operation result C21 (step 23). In the first period of the second phase P2, the driving detection unit 121 performs a touch detection procedure of the second reading position of the sections a21 to a24 to generate and temporarily store the sensing signals S21 to S24 of the second reading position (step 24). In the second period of the second phase P2, the control unit 123 performs convolution calculation on the plurality of sensing signals S21 to S24 at the second reading position to obtain a second operation result C22, and replaces the corresponding plurality of sensing signals S21 to S24 with the second operation result C22 (step 26). And repeating the steps of reading, temporary storage, convolution calculation, substitution and the like of the subsequent reading position. The control unit 123 can obtain the sensing signals of all the reading positions of all the sections a21 to a24 of the sensing area AA and the operation results C21 to C2k of the convolution calculation thereof through the first phase P0 to the kth phase Pk.
In yet another embodiment, the sensing area AA may be divided into a plurality of areas A31-A36 in a matrix form, as shown in FIG. 8. The first direction D1 corresponds to the extending direction of the electrode lines Y1 to Ym, and the second direction D2 corresponds to the extending direction of the driving electrode lines X1 to Xn. Similarly, in the first period of the first phase P1, the driving detection unit 121 obtains the sensing signals S31 to S36 corresponding to the first reading position of each section a31 to a36 (step 21) and stores the signals temporarily (step 22). In the second period of the first phase P1, the control unit 123 performs convolution calculation on the plurality of sensing signals S31 to S36 at the first reading position to obtain a first operation result C31, and replaces the corresponding sensing signals S31 to S36 with the first operation result C31 (step 23). In the first period of the second phase P2, the driving detection unit 121 performs a touch detection procedure of the second reading position of the sections a31 to a36 to generate and temporarily store the sensing signals S31 to S36 of the second reading position (step 24). In the second period of the second phase P2, the control unit 123 performs convolution calculation on the plurality of sensing signals S31 to S36 at the second reading position to obtain a second operation result C32, and replaces the corresponding plurality of sensing signals S31 to S36 with the second operation result C22 (step 26). And repeating the steps of reading, temporary storage, convolution calculation, substitution and the like of the subsequent reading position. The control unit 123 can obtain the sensing signals of all the reading positions of all the sections a31 to a36 of the sensing area AA and the operation results C31 to C3k of the convolution calculation thereof through the first phase P0 to the kth phase Pk.
It should be understood that the sensing area AA can be divided into any number (the base number or the even number) and any shape of the plurality of sections according to the requirement, in other words, the division form of the sensing area AA is not limited by the present application.
In some embodiments, signal processing circuitry 12 may be implemented by one or more dies. In one embodiment, control unit 123 may be implemented by a microprocessor, microcontroller, digital signal processor, central processing unit, programmable logic controller, state machine, or any analog and/or digital device that operates on signals based on operational instructions. In some embodiments, the storage unit 125 may be built in and/or external to the control unit 123. The storage unit 125 may be used to store the related software/firmware programs, data, combinations thereof, and the like, in addition to the signals. Here, the storage unit 125 may be implemented by one or more banks.
In some embodiments, the signal pipeline processing method of the sensing device according to the present application may be implemented by a computer program product, so that the signal pipeline processing method of the sensing device according to any embodiment of the present application may be completed when a computer (i.e., any touch device) loads a program and executes the program. In some embodiments, the computer program product may be a readable recording medium, and the program is stored in the readable recording medium and loaded for power. In some embodiments, the program itself may be a computer program product and may be transmitted to the sensing device in any manner.
In summary, according to the signal pipeline processing method and the sensing device of the present application, convolution operation is used to make the signal more stable and better in quality, and signal measurement and signal processing are alternately performed for the local sensing region, so as to avoid waiting for driving of the sensing region. In addition, according to the signal pipeline processing method and the sensing device of the application, the operation result of convolution operation is utilized to replace the sensing result (sensing signal) of all the reading positions of the sensing area to carry out the subsequent steps or application, so that the application energy of the sensing result of the reading position obtained by the sensing device is more flexible. In addition, according to the signal pipeline processing method of the sensing device and the sensing device of the application, the storage space of the part can be released after the operation result of the convolution operation of each local sensing area is obtained, so that the storage space can be used more effectively.
Claims (10)
1. A signal pipeline processing method of a sensing device, comprising:
in a first period of a first phase, performing a touch detection procedure of a first reading position of a plurality of intervals of a sensing area to generate a plurality of sensing signals of the first reading position, and temporarily storing the plurality of sensing signals of the first reading position;
in a second period of the first phase, performing convolution calculation on the plurality of sensing signals at the first reading position to obtain a first operation result, and replacing the plurality of sensing signals with the first operation result, wherein the second period of the first phase is after the first period of the first phase;
in a first period of a second phase, performing a touch detection procedure of sensing points of a second reading position of the plurality of intervals to generate a plurality of sensing signals of the second reading position, and temporarily storing the plurality of sensing signals of the second reading position; and
and in a second period of the second phase, performing convolution calculation on the plurality of sensing signals of the second reading position to obtain a second operation result, and replacing the plurality of sensing signals with the second operation result, wherein a first edge of the second phase is later than a first edge of the first phase, and the second period of the second phase is later than the first period of the second phase.
2. The signal pipeline processing method of a sensing device of claim 1, wherein the step of performing the convolution calculation of the plurality of sensing signals of the first read location comprises:
selecting one of a plurality of feature matrixes; and
and carrying out convolution calculation on a plurality of characteristic values in the selected characteristic matrix and the plurality of sensing signals of the first reading position.
3. The signal pipeline processing method of claim 1, wherein the step of performing the convolution calculation of the plurality of sensing signals of the second read position comprises:
selecting one of a plurality of feature matrixes; and
and carrying out convolution calculation on a plurality of characteristic values in the selected characteristic matrix and the plurality of sensing signals of the second reading position.
4. The signal pipeline processing method of claim 1, wherein the second edge of any one phase is later than the first edge of the next phase.
5. The signal pipeline processing method of claim 1, wherein the second edge of any one phase is equal to the first edge of the next phase.
6. A sensing device, comprising:
the signal sensor comprises a sensing area which is divided into a plurality of sections, and each section is provided with a plurality of sensing points;
a driving detection unit electrically connected with the signal sensor;
a storage unit; and
a control unit electrically connected to the drive detection unit and the storage unit, the control unit executing:
in a first period of a first phase, performing a touch detection procedure of a first reading position of a plurality of intervals of a sensing area to generate a plurality of sensing signals of the first reading position, and temporarily storing the plurality of sensing signals of the first reading position in the storage unit;
in a second period of the first phase, performing convolution calculation on the plurality of sensing signals at the first reading position to obtain a first operation result, and replacing the plurality of sensing signals with the first operation result, wherein the second period of the first phase is after the first period of the first phase;
in a first period of a second phase, performing a touch detection procedure of sensing points of a second reading position in the plurality of intervals to generate a plurality of sensing signals of the second reading position, and temporarily storing the plurality of sensing signals of the second reading position in the storage unit; and
and in a second period of the second phase, performing convolution calculation on the plurality of sensing signals of the second reading position to obtain a second operation result, and replacing the plurality of sensing signals with the second operation result, wherein a first edge of the second phase is later than a first edge of the first phase, and the second period of the second phase is later than the first period of the second phase.
7. The sensing apparatus of claim 6, wherein performing the convolution calculation of the plurality of sensing signals of the first read location comprises:
selecting one of a plurality of feature matrixes; and
and carrying out convolution calculation on a plurality of characteristic values in the selected characteristic matrix and the plurality of sensing signals of the first reading position.
8. The sensing apparatus of claim 6, wherein performing the convolution calculation of the plurality of sensing signals of the second read position comprises:
selecting one of a plurality of feature matrixes; and
and carrying out convolution calculation on a plurality of characteristic values in the selected characteristic matrix and the plurality of sensing signals of the second reading position.
9. The sensing device of claim 6, wherein the second edge of any one phase is later than the first edge of the next phase.
10. The sensing device of claim 6, wherein the second edge of any one phase is equal to the first edge of the next phase.
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| CN103154871A (en) * | 2010-07-16 | 2013-06-12 | 感知像素股份有限公司 | Techniques for locally improving signal to noise in a capacitive touch sensor |
| KR20130017888A (en) * | 2011-08-12 | 2013-02-20 | 엘지디스플레이 주식회사 | Extraction method of the centroid coordinate of touch position and touch display device using the same |
| CN105659099A (en) * | 2013-04-22 | 2016-06-08 | 谱瑞科技有限公司 | Hardware de-convolution block for multi-phase scanning |
| CN107102785A (en) * | 2016-02-22 | 2017-08-29 | 盐光股份有限公司 | Updating method of judgment baseline value of capacitive sensing device and capacitive sensing device |
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