CN111813256A

CN111813256A - Touch processing method and device and touch system

Info

Publication number: CN111813256A
Application number: CN202010281316.8A
Authority: CN
Inventors: 张钦富; 叶尚泰
Original assignee: Egalax Empia Technology Inc
Current assignee: Egalax Empia Technology Inc
Priority date: 2019-04-12
Filing date: 2020-04-10
Publication date: 2020-10-23
Anticipated expiration: 2040-04-10
Also published as: CN111813256B; TWI724728B; TW202038073A; TW202038062A; TWI721705B

Abstract

The invention discloses a touch processing method, which comprises the following steps: selecting a detection range, wherein the detection range comprises N first electrodes, and N is a positive integer greater than 2; the following steps are repeatedly performed N times: selecting N-1 of the N first electrodes as an ith combination, wherein i is a positive integer from 1 to N; simultaneously sending out driving signals to the plurality of first electrodes in the ith combination; measuring the induced driving signals through a plurality of second electrodes to obtain ith period one-dimensional sensing information, wherein the ith combination and the jth combination respectively comprise different combinations of the plurality of first electrodes, j is a positive integer from 1 to N, and i is not equal to j; respectively summing all the ith time interval one-dimensional sensing information into full time interval one-dimensional sensing information; and calculating two-dimensional sensing information.

Description

Touch processing method and device and touch system

Technical Field

The present invention relates to the field of touch detection technologies, and in particular, to a touch processing method, a touch processing device, and a touch system.

Background

Touch screens or panels are one of the common input/output interfaces of modern electronic systems. When the size of the touch screen is larger and larger, the number of the touch electrodes on the touch screen is increased, and the speed of scanning the touch screen for the existence of the external conductive object is reduced. How to accelerate the scanning speed of the touch screen so as to maintain or even accelerate the reporting frequency of the scanning result is the problem to be solved by the invention.

Disclosure of Invention

The present invention provides a touch processing method, a touch processing device and a touch system, so as to solve the problem that the speed of scanning a touch screen for the presence or absence of an external conductive object becomes slower as the number of touch electrodes on the touch screen increases.

The invention provides a touch processing method, which is suitable for a touch panel, wherein the touch panel comprises a plurality of first electrodes parallel to a first direction and a plurality of second electrodes parallel to a second direction, and the touch processing method comprises the following steps: selecting a detection range, wherein the detection range comprises N first electrodes, and N is a positive integer greater than 2; the following steps are repeatedly performed N times: selecting N-1 of the N first electrodes as an ith combination, wherein i is a positive integer from 1 to N; simultaneously sending out driving signals to the plurality of first electrodes in the ith combination for a first period of time; measuring the induced driving signals through the plurality of second electrodes to obtain sensing information of the ith period and one dimension, wherein the ith combination and the jth combination respectively comprise different combinations of the plurality of first electrodes, j is a positive integer from 1 to N, and i is not equal to j; respectively summing all the ith time interval one-dimensional sensing information into full time interval one-dimensional sensing information; and calculating two-dimension sensing information according to the all-time one-dimension sensing information and all the i-th time one-dimension sensing information.

In an embodiment, the touch processing method further includes; detecting whether a proximity event exists on the touch panel near the selected N first electrodes according to the two-dimensional sensing information, wherein the proximity event is an event that an external conductive object approaches or touches the touch panel, and when a driving signal is sent to one first electrode corresponding to the proximity event for the first period of time, enough driving signals cannot be measured to one second electrode corresponding to the proximity event to detect the proximity event.

In one embodiment, when a first electrode corresponding to the proximity event sends out a driving signal for N-1 first periods, enough driving signals are measured for a second electrode corresponding to the proximity event to detect the proximity event.

In one embodiment, the steps of the above embodiments are repeated until all the first electrodes are selected as the detection range by the selecting step.

In one embodiment, M first electrodes are selected when the step of selecting the detection range is performed at least one kth time, where M is a positive integer greater than 2 and M is not equal to N.

In one embodiment, the M first electrodes selected during the k-th execution of the step of selecting a detection range correspond to another proximity event of a previous detection, where M is less than N.

In an embodiment, the touch processing method further includes: obtaining a plurality of pieces of dimension sensing information obtained after repeatedly executing the steps of the above embodiment; calculating the two-dimensional sensing information of the full touch panel corresponding to the touch panel according to the two-dimensional sensing information and the N selected first electrodes corresponding to the two-dimensional sensing information; and detecting whether a proximity event exists on the touch panel according to the full-touch panel two-dimension sensing information.

In one embodiment, the i-th one of the first electrodes not selected in the i-th combination is not adjacent to the i + 1-th one of the first electrodes not selected in the i + 1-th combination.

In one embodiment, the sensing information corresponding to the ith sensing electrode in the two-dimensional sensing information is a difference value between the sensing information corresponding to the full-time one-dimensional sensing information and a quotient, wherein the quotient is a quotient obtained by dividing the sensing information corresponding to the N-i + 1-th time-period one-dimensional sensing information by (N-1).

In an embodiment, the touch processing method further includes: simultaneously sending out a second driving signal for the first period of time for one of the first electrodes outside the ith combination, wherein among the two-dimensional sensing information, the sensing information corresponding to the ith first electrode is the product of (N-2)/N and a difference value, the difference value is the sensing information of the full-period one dimension minus the sensing information of the nth-i + 1-period one dimension, and the second driving signal is the inverted signal of the driving signal.

According to an embodiment of the present application, a touch processing device is provided for controlling a touch panel, the touch panel including a plurality of first electrodes parallel to a first direction and a plurality of second electrodes parallel to a second direction, the touch processing device including: a driving circuit module; a sensing circuit module; the connection network module is used for connecting the driving circuit module to any one or more first electrodes and connecting the sensing circuit module to any one or more second electrodes; and a processor module for executing the program stored in the non-volatile memory to implement the following steps: selecting a detection range, wherein the detection range comprises N first electrodes, and N is a positive integer greater than 2; the following steps are repeatedly performed N times: selecting N-1 of the N first electrodes as an ith combination, wherein i is a positive integer from 1 to N; enabling the driving circuit module to simultaneously send driving signals to the plurality of first electrodes in the ith combination for a first period of time; and enabling the sensing circuit module to measure the induced driving signals through the plurality of second electrodes to obtain the sensing information of the ith period one dimension, wherein the ith combination and the jth combination respectively comprise different combinations of the plurality of first electrodes, j is a positive integer from 1 to N, and i is not equal to j; respectively summing all the ith time interval one-dimensional sensing information into full time interval one-dimensional sensing information; and calculating two-dimension sensing information according to the all-time one-dimension sensing information and all the i-th time one-dimension sensing information.

In one embodiment, the processor module is further configured to execute a program to: detecting whether a proximity event exists on the touch panel near the selected N first electrodes according to the two-dimensional sensing information, wherein the proximity event is an event that an external conductive object approaches or touches the touch panel, and when a driving signal is sent to one first electrode corresponding to the proximity event for the first period of time, enough driving signals cannot be measured to one second electrode corresponding to the proximity event to detect the proximity event.

In one embodiment, the processor module is further configured to execute a program to: the steps of the above embodiments are repeated until all the first electrodes are selected as the detection range by the selecting step.

In one embodiment, the processor module is further configured to execute a program to: obtaining a plurality of two-dimensional sensing information obtained after repeatedly executing the steps of the above embodiment; calculating the two-dimensional sensing information of the full touch panel corresponding to the touch panel according to the two-dimensional sensing information and the N selected first electrodes corresponding to each two-dimensional sensing information; and detecting whether a proximity event exists on the touch panel according to the full-touch panel two-dimension sensing information.

In one embodiment, the step of selecting N-1 of the first electrodes in the ith combination is performed randomly.

In one embodiment, the step of simultaneously sending driving signals to the plurality of first electrodes in the ith combination for the first period further includes: simultaneously sending out a second driving signal for the first period of time for one of the first electrodes outside the ith combination, wherein among the two-dimensional sensing information, the sensing information corresponding to the ith first electrode is the product of (N-2)/N and a difference value, the difference value is the sensing information of the full-period one dimension minus the sensing information of the nth-i + 1-period one dimension, and the second driving signal is the inverted signal of the driving signal.

According to an embodiment of the present application, a touch system is provided, which includes the touch panel and the touch processing device described in any of the above embodiments.

According to the touch processing method, the touch processing device and the touch system provided by the invention, compared with the traditional mutual capacitance sensing method, the fixed arithmetic operation time can be spent in a desired detection range, and further, the touch processing method, the touch processing device and the touch system can be reduced

The sensing time of the session. When N is larger, more sensing time can be saved. The invention has the advantage of accelerating the scanning speed of the touch screen so as to accelerate the report frequency of the scanning result.

Drawings

FIG. 1 is a block diagram of a touch system according to an embodiment of the invention;

FIG. 2 is a schematic diagram of a touch screen according to an embodiment of the invention;

FIG. 3 is a flow chart illustrating a mutual capacitance sensing method according to an embodiment of the invention;

FIG. 4 is a flow chart illustrating a mutual capacitance sensing method according to another embodiment of the invention.

[ notation ] to show

100: touch control system

110: touch control processing device

111: connection Network module

112: drive circuit module

113: sensing circuit module

114: processor module

115: interface module

120: touch screen or panel

121. 121A to C: a first electrode

122. 122A to H: second electrode

130: touch control pen

135: touch blackboard eraser

140: main unit

141: input/output interface module

142: central processor module

143: graphics processor module

144: memory module

145: network interface module

146: memory module

300: mutual capacitance sensing method

310-390: step (ii) of

400: mutual capacitance sensing method

Detailed Description

Fig. 1 is a block diagram of a touch system 100 according to an embodiment of the invention. The touch system 100 may be a conventional desktop, laptop, tablet-type personal computer, industrial control computer, smart phone, or other form of touch-enabled computer system.

The touch system 100 can include a touch processing device 110, a touch panel or screen 120 connected to the touch processing device, and a host 140 connected to the touch processing device. The touch system 100 can further include one or more styli 130 and/or a touchpad 135. Hereinafter, the touch panel or screen 120 may be generically referred to as the touch screen 120 in the present application, but in embodiments lacking a display function, those skilled in the art can understand that the touch screen referred to in the present application is a touch panel.

The touch screen 120 includes a plurality of first electrodes 121 parallel to a first axis and a plurality of second electrodes 122 parallel to a second axis. The first electrode 121 may be interleaved with a plurality of second electrodes 122 to form a plurality of sensing points or sensing regions. Likewise, the second electrodes 122 may be interleaved with the plurality of first electrodes 121 to form a plurality of sensing points or sensing regions. In some embodiments, the first electrode 121 may be referred to as a first touch electrode 121, and the second electrode 122 may also be referred to as a second touch electrode 122. The first electrode 121 and the second electrode 122 are also referred to as touch electrodes. In some embodiments of the touch screen 120, the first electrode 121 and the second electrode 122 are made of transparent materials. The first electrode 121 and the second electrode 122 may be on the same electrode layer, and a plurality of conductive sheets of each first electrode 121 or each second electrode 122 may be connected by a bridge. The first electrode 121 and the second electrode 122 can also be different electrode layers stacked on top of each other. Unless otherwise specified, the present application may be generally applicable to embodiments having a single layer or multiple electrode layers. The first axis and the second axis are generally perpendicular to each other, but the present application does not limit that the first axis is necessarily perpendicular to the second axis. In one embodiment, the first axis may be a horizontal axis or a new axis of the touch screen 120.

The touch processing device 110 may include the following hardware circuit modules: a connection network (interconnection network) module 111, a drive circuit module 112, a sense circuit module 113, a processor module 114, and an interface module 115. The touch processing device 110 can be implemented in a single integrated circuit, which can include one or more chips. The touch processing device 110 can also be implemented by using a plurality of integrated circuits and an interconnection circuit board carrying the plurality of integrated circuits. The touch processing device 110 may also be implemented in the same integrated circuit as the host 140, or may be implemented in the same chip as the host 140. In other words, the present application is not limited to the embodiment of the touch processing device 110.

The connection network module 111 is used for connecting the plurality of first electrodes 121 and/or the plurality of second electrodes 122 of the touch screen 120, respectively. The connection network module 111 can receive the control command from the processor module 114, and is used to connect the driving circuit module 112 to any one or more touch electrodes, and also used to connect the sensing circuit module 113 to any one or more touch electrodes. The connection network module 111 may include a combination of one or more Multiplexers (MUXs) to perform the above-described functions.

The driving circuit module 112 may include a frequency generator, a frequency divider, a frequency multiplier, a phase-locked loop, a power amplifier, a dc-dc voltage converter, a rectifier and/or a filter, and the like, and is configured to provide a driving signal to any one or more touch electrodes through the connection network module 111 according to a control command of the processor module 114. Various types of analog or digital signal modulation may be performed on the driving signals to transmit certain information. The Modulation method includes, but is not limited to, Frequency Modulation (FM), Phase Modulation (Phase Modulation), Amplitude Modulation (AM), double Sideband Modulation (DSB), single Sideband Modulation (SSB-AM), Vestigial Sideband Modulation (Vestigial Sideband Modulation), amplitude shift Modulation (ASK), Phase shift Modulation (PSK), Quadrature Amplitude Modulation (QAM), frequency shift Modulation (FSK), Continuous Phase Modulation (CPM), Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Orthogonal Frequency Division Multiplexing (OFDM), and Pulse Width Modulation (PWM). The driving signal may comprise one or more square waves, sinusoidal waves, or any modulated waveform. The driving circuit module 112 may include one or more channels, and each channel may be connected to any one or more touch electrodes through the connection network module 111.

The sensing circuit module 113 may include an integrator, a sampler, a frequency generator, a frequency divider, a frequency multiplier, a phase-locked loop, a power amplifier, a multiplier, a dc-dc voltage converter, a rectifier, and/or a filter, and is configured to sense one or more touch electrodes through the connection network module 111 according to a control command of the processor module 114. When the touch signal is transmitted through one of the touch electrodes, the other touch electrode can sense the touch signal. The sensing circuit module 113 can perform corresponding demodulation on the driving signal sensed by the other touch electrode in accordance with the modulation method executed by the driving circuit module 112, so as to recover the information carried by the driving signal. The sensing circuit module 113 may include one or more channels, and each channel may be connected to any one or more touch electrodes through the connection network module 111. Each channel may be sensed and demodulated at the same time.

In one embodiment, the driving circuit module 112 and the sensing circuit module 113 may include an analog front-end (AFE) circuit. In another embodiment, the driving circuit module 112 and the sensing circuit module 113 may include a digital back-end (DBE) circuit in addition to the analog front-end circuit. While the driving circuit module 112 and the sensing circuit module 113 only include analog front-end circuits, digital back-end circuits can be implemented in the processor module 114.

The processor module 114 may include a digital signal processor, which is used to connect the analog front-end circuits of the driving circuit module 112 and the sensing circuit module 113, respectively, or connect the digital back-end circuits of the driving circuit module 112 and the sensing circuit module 113, respectively. The processor module 114 may include an embedded processor, non-volatile memory, and volatile memory. The non-volatile memory may store a common operating system or a real-time operating system (real-time) and applications that execute under the operating system. The aforementioned operating system and application program include a plurality of instructions and data, and after the processor (including an embedded processor and/or a digital signal processor) executes the instructions, the instructions can be used to control other modules of the touch processing device 110, including the connection network module 111, the driving circuit module 112, the sensing circuit module 113 and the interface module 115. For example, the processor module 114 may include the 8051 family of processors commonly used in the industry, Intel's i960 family of processors, ARM's Cortex-M family of processors, and so on. The present application does not limit the type and number of processors included in the processor module 114.

The instructions and data may be used to implement the steps described herein, as well as processes and methods comprising such steps. Some instructions may operate independently within the processor module 114, such as arithmetic and logic operations (arithmetric and logic operations). Other instructions may be used to control other modules of the touch processing device 110, and these instructions may include the input/output interface of the processor module 114 to control other modules. Other modules may also provide information to the operating system and/or applications executed by the processor module 114 via the I/O interfaces of the processor module 114. It will be understood by those skilled in the art that the processes and methods described herein can be implemented using the modules and instructions described above, given the general knowledge of computer architecture and architecture.

The interface module 115 may comprise various serial or parallel buses, such as a Universal Serial Bus (USB), an integrated circuit bus (I)²C) And an input/output interface of an industrial standard such as Peripheral Component Interconnect (PCI), peripheral component interconnect Express (PCI-Express), IEEE1394, or the like. The touch processing device 110 is connected to the host 140 through an interface module 115.

The touch system 100 can include one or more stylus 130 and/or touchpad 135. The stylus 130 or the touch pad 135 may be an emitter that emits an electrical signal, and may include an active emitter that actively emits an electrical signal, a passive emitter that passively emits an electrical signal, or a reactive emitter that emits an electrical signal in response to an external electrical signal. The stylus 130 or the touchpad 135 may include one or more electrodes for synchronously or asynchronously receiving electrical signals from the touch screen 120 or for synchronously or asynchronously sending electrical signals to the touch screen 120. These electrical signals may be modulated in one or more of the ways described above.

The stylus 130 or the touchpad 135 may be a conductor for conducting a driving signal or ground through the user's hand or body. The stylus 130 or the touch pad 135 may be connected to the io interface module 141 of the host 140 or other modules below the io interface module 141 in a wired or wireless manner.

The touch processing device 110 can detect one or more external conductive objects, such as a human finger, a palm, or a passive stylus 130 or a touchpad 135, by means of the touch screen 120, and can also detect a stylus 130 or a touchpad 135 that emits an electrical signal. The touch processing device 110 may use a mutual-capacitance (mutual-capacitance) or self-capacitance (self-capacitance) method to detect an external conductive object. The stylus 130, the touchpad 135 and the touch processing device 110 may use the signal modulation and the corresponding signal demodulation to transmit information by using electrical signals. The touch processing device 110 can use electrical signals to detect information such as one or more proximity locations where the stylus 130 or the touchpad 135 approaches or contacts the touch screen 120, a sensor status (e.g., a pressure sensor or a button) on the stylus 130 or the touchpad 135, a pointing direction of the stylus 130 or the touchpad 135, or a tilt angle of the stylus 130 or the touchpad 135 relative to the plane of the touch screen 120.

The host 140 is a main device for controlling the touch system 110, and may include an input/output interface module 141 connected to the interface module 115, a central processor module 142, a graphics processor module 143, a memory module 144 connected to the central processor module 142, a network interface module 145 connected to the input/output interface module 141, and a memory module 146.

The memory module 146 includes a non-volatile memory, such as a hard disk, an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The memory module 146 may store a general operating system and application programs that execute under the operating system. The network interface module 145 may comprise a hardware network connection interface for wired and/or wireless connections. The network interface module 145 may conform to common industry standards such as the IEEE 802.11 wireless local area network standard, the IEEE 802.3 wired local area network standard, the 3G, 4G, and/or 5G wireless communication network standards, the bluetooth wireless communication network standard, and so on.

The cpu module 142 may be directly or indirectly connected to the i/o interface module 141, the graphics processor module 143, the memory module 144, the network interface module 145, and the memory module 146. The central processor module 142 may contain one or more processors or processor cores. Common processors may include intel, supermarket, waffle's x86 and x64 instruction sets, or apple, highpass, concategory's advocate ARM instruction set, or other forms of complex Computer Instruction Set (CISC) or reduced computer instruction set (RISC). The operating system and the application programs include a plurality of instructions and data corresponding to the instruction set, and the instructions are executed by the cpu module 142 and then used to control other modules of the touch system 100.

The optional graphics processor module 143 is typically a part of the computation used to process graphics output related data. The graphics processor module 143 may be coupled to the touch screen 120 described above for controlling the output of the touch screen 120. In some applications, the host 140 may not require specialized processing by the graphics processor module 143, and may directly cause the CPU module 142 to perform the graphics output related computing components.

The host 140 may also include other components or elements not shown in FIG. 1, such as a sound I/O interface, a keyboard input interface, a mouse input interface, a trackball input interface, and/or other hardware modules. It should be understood that the touch system 100 is only illustrative and the rest of the invention provided herein is relevant to the technical features of the invention, and reference should be made to the scope of the specification and the claims.

Please refer to fig. 2, which is a schematic diagram of a touch screen 120 according to an embodiment of the invention. For convenience of illustration, the touch screen 120 only includes three first electrodes 121, which are the

first electrodes

121A, 121B, and 121C in sequence. The touch screen 120 includes a plurality of second electrodes 122A-122H. Those skilled in the art will appreciate that the touch screen 120 may include N first electrodes 121, where N is a positive integer. In some embodiments, N is a positive integer greater than 10 or more.

In a conventional mutual capacitance detection method, the driving circuit module 112 provides a driving signal to one of the three first electrodes 121 in a time-sharing manner. When the driving signal is provided, the sensing circuit module 113 is enabled to perform three sensing operations on all the second electrodes 122 simultaneously, so as to obtain three sets of one-dimensional sensing information. Each set of one-dimensional sensing information includes a sensing result for each of the second electrodes 122. The three sets of one-dimensional sensing information can form two-dimensional sensing information or sensing images according to the sequence of the corresponding first electrodes 121 for sending the driving signals. With the two-dimensional sensing information or sensing image, the processor module 114 can detect whether an external conductive object is in proximity to the touch screen 120.

Assuming that each of the first electrodes 121 needs to be driven for a period of T, the sensing circuit module 113 can accumulate a sufficient amount of signals. In the conventional mutual capacitance detection method, a minimum 3T period is required for scanning the touch screen 120 once. To generalize, if the touch screen 120 has N first electrodes 121, a minimum time length of N × T is required for scanning the touch screen 120 once.

According to an embodiment of the present invention, a method for simultaneously scanning a plurality of first electrodes 121 is provided. Please refer to table one, which shows a timing chart of the touch screen 120 shown in fig. 2 for simultaneous scanning.

Watch 1

In the embodiment shown in Table one, the driving and sensing operations are performed in three periods, but each period has a length of T/2. In other words, the driving signal emitted by each first electrode 121 is not enough for the sensing circuit module 113 to accumulate a sufficient amount of sensing signals for each period. However, after three periods, the length of time for each first electrode 121 to emit the driving signal is accumulated to T, so that the sensing circuit module 113 can accumulate a sufficient amount of sensing signals.

In each period, two first electrodes 121 simultaneously emit driving signals. Therefore, the sensing signal sensed at any one of the second electrodes 122 accumulates the sensing energy of the driving signal emitted by the two first electrodes 121. In the last column of Table one, it can be seen that in each period, any driving signal induced by any one of the second electrodes 122 is sourced. For example, in the first period, the driving signal induced by any one of the second electrodes 122 is derived from the

first electrodes

121A and 121B. In each period, the signal obtained by sensing each second electrode 122 can also constitute one-dimensional sensing information.

After the driving and sensing operation in three periods is finished, a set of first-period one-dimension sensing information, a set of second-period one-dimension sensing information and a set of third-period one-dimension sensing information can be generated respectively. Then, the three groups of elements of the one-dimensional sensing information are accumulated to obtain a group of accumulated one-dimensional sensing information. For the value of any element of the accumulated one-dimensional sensing information, the accumulated sensing signal corresponds to twice the sum of the driving signals emitted from the first electrode 121A, the first electrode 121B and the first electrode 121C in a single period. When the value of any element is divided by two, the accumulated sensing signal corresponds to the sum of the driving signals emitted from the first electrode 121A, the first electrode 121B and the first electrode 121C in a single period. Then, the difference obtained by subtracting the corresponding element of the one-dimensional sensing information of the first period from the half value of any element corresponds to the driving signal emitted by the first electrode 121C in the single period. Finally, the difference is multiplied by twice, which corresponds to the driving signal emitted from the first electrode 121C during two periods.

Similarly, the difference obtained by subtracting the corresponding element of the one-dimensional sensing information in the second period from one-half of the value of any element of the one-dimensional sensing information after accumulation corresponds to the driving signal emitted from the first electrode 121B in a single period. Multiplying the difference by twice the product corresponds to the drive signal emitted by the first electrode 121B during both periods.

Similarly, the difference obtained by subtracting the corresponding element of the one-dimensional sensing information in the third period from one-half of the value of any element of the one-dimensional sensing information after accumulation corresponds to the driving signal emitted from the first electrode 121A in a single period. Multiplying the difference by twice the product corresponds to the drive signal emitted by the first electrode 121A during both periods.

The corresponding element values of the first time-interval one-dimension sensing information, the second time-interval one-dimension sensing information and the third time-interval one-dimension sensing information are respectively expressed as M₁、M₂And M₃. The element value of the accumulated one-dimensional sensing information is represented as M_totalWhich is M₁+M₂+M₃The sum of (1).

M_total＝M₁+M₂+M₃(1)

The value X of the element corresponding to the one-dimensional sensing information of the first electrode 121C_CCan be expressed as:

element value X of one-dimensional sensing information corresponding to the first electrode 121B_BCan be expressed as:

the value X of the element corresponding to the one-dimensional sensing information of the first electrode 121A_ACan be expressed as:

after the calculation, the one-dimensional sensing information corresponding to the first electrode 121C, the one-dimensional sensing information corresponding to the first electrode 121B, and the one-dimensional sensing information corresponding to the first electrode 121A can be obtained according to the first, second, and third time periods of the one-dimensional sensing information. The three sets of one-dimensional sensing information respectively corresponding to the first electrodes 121A-C all correspond to one of the second electrodes 122. In other words, three values corresponding to three intersection points of the

first electrodes

121A, 121B, and 121C and one of the second electrodes 122 are obtained. The multiple sets of the one-dimensional sensing information corresponding to the multiple second electrodes can also form two-dimensional sensing information or sensing images. With the two-dimensional sensing information or sensing image, the processor module 114 can detect whether an external conductive object is in proximity to the touch screen 120.

Compared with the conventional method, in equation (1), the above embodiment requires two additions in parallel to obtain the accumulated one-dimensional sensing information. Then, in equations (2), (3) and (4), three divisions and three subtractions are performed in parallel to obtain sensing values corresponding to the three first electrodes 121. Since the denominator of division among equations (2), (3), (4) is 2, division can be performed using an operation shifted right by one bit. In summary, the above-described embodiment additionally takes eight arithmetic operations but reduces the sensing time for the 1.5T period, relative to the conventional mutual capacitance sensing method. Since the instruction cycle of the processor module 114 is much longer than the sensing time of the sensing circuit module 113, and the processor module 114 usually has vector parallel arithmetic units, which can process multiple sets of arithmetic at a time, the time saved by scanning the touch screen 120 at a time is very considerable. Accordingly, the frequency of the touch processing device 110 reporting the external conductive object approaching the touch screen 120 by the host 140 can be increased.

According to an embodiment of the present invention, a method for simultaneously scanning N first electrodes 121 is provided_iWherein N is a positive integer greater than 1 and i is 1 to N.Please refer to table two, which shows a timing chart for simultaneously scanning the touch screen 120 having N first electrodes 121.

Watch two

In the embodiment shown in Table two, the driving and sensing operations are performed in N periods, but the length of each period is T/(N-1). In other words, each of the first electrodes 121 is one of the first electrodes for each period_iThe driving signal is not enough for the sensing circuit module 113 to accumulate a sufficient amount of sensing signals. But after N periods, each of the first electrodes 121_iThe duration of the driving signal is accumulated to T, so that the sensing circuit module 113 can accumulate a sufficient amount of sensing signals.

In each period, (N-1) first electrodes 121 simultaneously emit driving signals. Therefore, the sensing signal sensed at any one of the second electrodes 122 accumulates the sensing energy of the driving signal emitted by (N-1) first electrodes 121. In the last column of Table two, it can be seen that in each period, any one of the driving signals induced by the second electrodes 122 is sourced. For example, in the first period, the driving signal induced by any one of the second electrodes 122 is derived from the first electrode 121₁To 121_N-1. In each period, the signal obtained by sensing each second electrode 122 can also constitute one-dimensional sensing information.

After the driving and sensing operation of N time intervals is finished, N groups of the i-th time interval one-dimensional sensing information can be respectively generated. Then, the N groups of elements of the one-dimensional sensing information are accumulated to obtain a group of accumulated one-dimensional sensing information. For the value of any element of the accumulated one-dimension sensing information, the accumulated sensing signal corresponds to (N) in a single time interval-1) times the first electrode 121₁To the first electrode 121_NThe sum of the emitted drive signals. When the value of any element is divided by (N-1), the accumulated sensing signal corresponds to the first electrode 121 during a single period₁To the first electrode 121_NThe sum of the emitted drive signals. Then, the quotient of any element divided by (N-1) is subtracted by the difference of the corresponding element of the one-dimensional sensing information of the first period, which corresponds to the first electrode 121 during a single period_NThe driving signal emitted. Multiplying the difference by the product of (N-1) times corresponds to the first electrode 121 during (N-1) time periods_NThe driving signal emitted.

The corresponding element values of the above-mentioned i-th period one-dimensional sensing information are respectively expressed as M_iThe element value of the accumulated one-dimensional sensing information is represented as M_totalIt can be expressed as:

corresponding to the first electrode 121_iThe element value X of the one-dimensional sensing information_iCan be expressed as:

after the above calculation, the above-mentioned N sets of i-th period one-dimensional sensing information can be used to obtain the corresponding N first electrodes 121_iThe information is sensed in one dimension. The N groups respectively correspond to the first electrodes 121_iThe one-dimensional sensing information can also be composed into two-dimensional sensing information or sensing image. With the two-dimensional sensing information or sensing image, the processor module 114 can detect whether an external conductive object is in proximity to the touch screen 120.

In contrast to the conventional method, in equation (5), the above embodiment requires (N-1) additions in parallel to obtain the accumulated one-dimensional sensing information. Then, in equation (6), a division is again used in parallelThe method and the two subtractions are respectively used to obtain the sensing values corresponding to the N first electrodes 121. In general, the above-described embodiments additionally take a fixed arithmetic operation time, but reduce the arithmetic operation time, relative to the conventional mutual capacitance sensing method

The sensing time of the session. For example, when N is 10, the sensing time of 8.89T can be reduced. When the value of N is larger, more sensing time is saved.

Since the instruction cycle of the processor module 114 is much longer than the sensing time of the sensing circuit module 113, and the processor module 114 usually has vector parallel arithmetic units, which can process multiple sets of arithmetic at a time, the time saved by scanning the touch screen 120 at a time is very considerable. Accordingly, the frequency of the touch processing device 110 reporting the external conductive object approaching the touch screen 120 by the host 140 can be increased.

In one embodiment, the touch screen 120 may have HxN first electrodes 121, or more than (H-1) N first electrodes 121 but less than HxN first electrodes 121. Therefore, the operation can be divided into H times, wherein H is a positive integer. Each operation can perform the mutual capacitance detection on the N first electrodes 121, so as to obtain one-dimensional sensing information corresponding to the N first electrodes 121. After H operations, one-dimensional sensing information corresponding to the HxN first electrodes 121 can be obtained. With the two-dimensional sensing information or sensing image, the processor module 114 can detect whether an external conductive object is in proximity to the touch screen 120.

In this embodiment, the N first electrodes 121 for each operation are not necessarily adjacent to each other. In order to reduce the electromagnetic interference caused by the fixed sequence of the driving signals, the non-adjacent N first electrodes 121 may be selected for detection each time of the H operations. Or in each of the H operations, the adjacent N first electrodes 121 are selected for detection. But in two consecutive operations, the 2N first electrodes 121 may not be adjacent. The first electrode 121 may be randomly generated by using a random number to avoid generating electromagnetic interference with a fixed frequency.

According to an embodiment of the present invention, a method for simultaneously scanning a plurality of first electrodes 121 is provided. Please refer to table three, which shows a timing chart of the touch screen 120 shown in fig. 2 for simultaneous scanning.

Watch III

In the embodiment shown in table three, the driving and sensing operations are performed in three periods, but the length of each period is T/2. In contrast to the embodiment of table one, in the first period, the driving signal emitted from the first electrode 121C is in opposite phase to the driving signal emitted from the first electrode 121A or the first electrode 121B. Since the inverted driving signals received by the same second electrode 122 cancel each other out, the driving signal received by a certain second electrode 122 during the first period can be represented as 121A + 121B-121C. Similarly, in the second period, the driving signal emitted from the first electrode 121B is opposite to the driving signal emitted from the first electrode 121A or the first electrode 121C, and the driving signal received by the strip of second electrodes 122 can be represented as 121A-121B + 121C. Similarly, in the third period, the driving signal emitted from the first electrode 121A is opposite to the driving signal emitted from the first electrode 121B or the first electrode 121C, and the driving signal received by the strip of second electrodes 122 can be represented as-121A +121B + 121C.

After the driving and sensing operation in three periods is finished, a set of first-period one-dimension sensing information, a set of second-period one-dimension sensing information and a set of third-period one-dimension sensing information can be generated respectively. Then, the three groups of elements of the one-dimensional sensing information are accumulated to obtain a group of accumulated one-dimensional sensing information. For any value of one element of the accumulated one-dimensional sensing information, the accumulated sensing signal corresponds to the sum of the positive phase driving signals emitted from the first electrode 121A, the first electrode 121B and the first electrode 121C in a single period, which is denoted as 121A +121B + 121C.

If the difference obtained by subtracting the value of the first-period one-dimensional sensing information from the value of any element of the accumulated one-dimensional sensing information corresponds to twice the sensing amount of the driving signal emitted from the first electrode 121C. The difference is divided by two to obtain the sensing amount corresponding to the driving signal emitted from the first electrode 121C. Similarly, the difference obtained by subtracting the value of the second period one-dimensional sensing information from the value of any element of the accumulated one-dimensional sensing information corresponds to twice the sensing amount of the driving signal emitted from the first electrode 121B. The difference is divided by two to obtain the sensing amount corresponding to the driving signal emitted from the first electrode 121B. Similarly, the difference obtained by subtracting the value of the one-dimensional sensing information in the third period from the value of any element of the one-dimensional sensing information corresponds to twice the sensing amount of the driving signal emitted from the first electrode 121A. The difference is divided by two to obtain the sensing amount corresponding to the driving signal emitted from the first electrode 121A.

X_C＝(M_total-M₁)/2 (7)

X_B＝(M_total-M₂)/2 (8)

X_A＝(M_total-M₃)/2 (9)

after the calculation, the one-dimensional sensing information corresponding to the first electrode 121C, the one-dimensional sensing information corresponding to the first electrode 121B, and the one-dimensional sensing information corresponding to the first electrode 121A can be obtained according to the first, second, and third time periods of the one-dimensional sensing information. The three sets of one-dimensional sensing information respectively corresponding to the first electrodes 121A-C can also form two-dimensional sensing information or sensing images.

According to an embodiment of the present invention, a method for simultaneously scanning N first electrodes 121 is provided_iWherein N is a positive integer greater than one and i is 1 to N. Please refer to table four, which shows a timing chart for simultaneously scanning the touch screen 120 with N first electrodes 121.

Watch four

In the embodiment shown in table four, as in the embodiment of table three, in the i-th period, the first electrode 121 is formed_N-i+1An inverted drive signal is emitted. So as to correspond to the first electrode 121_iThe element value X of the one-dimensional sensing information_iCan be expressed as:

after the above calculation, the above-mentioned N sets of i-th period one-dimensional sensing information can be used to obtain the corresponding N first electrodes 121_iThe information is sensed in one dimension. The N groups respectively correspond to the first electrodes 121_iThe corresponding elements of the one-dimensional sensing information are all corresponding to one of the second electrodes 122. In other words, the first electrodes 121 are obtained separately₁、121₂、…、121_NN values corresponding to N intersections of one of the second electrodes 122, respectively. The multiple sets of one-dimensional sensing information corresponding to the multiple second electrodes 122 can also form two-dimensional sensing information or sensing images. With the two-dimensional sensing information or sensing image, the processor module 114 can detect whether an external conductive object is in proximity to the touch screen 120.

In equation (10), two are usedThe sensing values corresponding to the N first electrodes 121 are obtained by the sub-division and the two subtraction. In general, the above-described embodiments additionally take a fixed arithmetic operation time, but reduce the arithmetic operation time, relative to the conventional mutual capacitance sensing method

Referring to fig. 3, a flow chart of a mutual capacitance sensing method 300 according to an embodiment of the invention is shown. The mutual capacitance sensing method can be applied to the touch processing device 110 shown in fig. 1, and particularly, the processor module 114 executes a plurality of instructions programmed according to the method to implement the mutual capacitance sensing touch processing method.

Step 310: n first electrodes which do not send out driving signals are selected.

Step 320: n-1 of the N first electrodes are selected as a new combination.

Step 330: and simultaneously sending out driving signals to the first electrodes in the combination to obtain the i-th period one-dimensional sensing information. Where i may be a positive integer between 1 and N. In step 330, the driving circuit module 112 sends out the driving signal, and the sensing circuit module 113 senses the time length of the driving signal induced by the second electrode, which has the characteristics shown in the second embodiment.

In one embodiment, step 330 may also send out the inverse driving signal to one of the first electrodes other than the combination at the same time. This embodiment is similar to the embodiments shown in table three and table four.

Step 340: it is determined whether N driving signals have been issued to the first electrode of the combination. If not, the process returns to step 320. If so, flow proceeds to block 350.

Step 350: based on the N i-th period one-dimensional sensing information obtained by executing the step 330N times, one-dimensional sensing information corresponding to the N first electrodes is calculated. When the inverse driving signal is not sent out through the first electrode other than the combination in step 330, the calculation steps in step 350 are as described in the embodiment shown in table one or table two. More precisely, it can be performed according to equation (6). When the inverted driving signal is generated through the first electrode out of the combination in step 350, the calculation steps of step 350 are as described in the embodiments shown in table three or table four. Also precisely, this can be done according to equation (10).

Step 360: and judging whether the scanning of the touch screen is finished. If the determination result is negative, the process returns to step 310. If the determination result is yes, the flow proceeds to step 370.

Step 370: and forming two-dimension sensing information according to the one-dimension sensing information corresponding to each first electrode. The one-dimensional sensing information in the two-dimensional sensing information is sequentially arranged according to the relative position of the corresponding first electrode.

Step 380: and calculating the proximity event of the external conductive object according to the two-dimensional sensing information.

Optional step 390: the host is reported back to the proximity event.

Referring to fig. 4, a flow chart of a mutual capacitance sensing method 400 according to an embodiment of the invention is shown. The mutual capacitance sensing method can be applied to the touch processing device 110 shown in fig. 1, and particularly, the processor module 114 executes a plurality of instructions programmed according to the method to implement the mutual capacitance sensing touch processing method.

Compared to the mutual capacitance sensing method 300 of fig. 3, the mutual capacitance sensing method 400 of fig. 4 obtains two-dimensional sensing information corresponding to each detection range, calculates and reports proximity events in the detection range to the host. The mutual capacitance sensing method 300 of fig. 3 is to combine the sensing information of one dimension into the sensing information of two dimensions of a single full touch panel, and then calculate and report the proximity event on the touch panel to the host. The embodiment shown in FIG. 3 provides greater accuracy for proximity events at the edges of two detection ranges, but requires more one-dimensional sensing information to be stored for computation and reporting on an entire touch panel. The embodiment of fig. 4 can detect a certain detection range individually without collecting the entire touch panel for calculation and reporting.

According to an embodiment of the present invention, a touch processing method is applied to a touch panel including a plurality of first electrodes parallel to a first direction and a plurality of second electrodes parallel to a second direction, the touch processing method including: selecting a detection range, wherein the detection range comprises N first electrodes, and N is a positive integer greater than 2; the following steps are repeatedly performed N times: selecting N-1 of the N first electrodes as an ith combination, wherein i is a positive integer from 1 to N; simultaneously sending out driving signals to the plurality of first electrodes in the ith combination for a first period of time; measuring the induced driving signals through the plurality of second electrodes to obtain sensing information of the ith period and one dimension, wherein the ith combination and the jth combination respectively comprise different combinations of the plurality of first electrodes, j is a positive integer from 1 to N, and i is not equal to j; respectively summing all the ith time interval one-dimensional sensing information into full time interval one-dimensional sensing information; and calculating two-dimension sensing information according to the all-time one-dimension sensing information and all the i-th time one-dimension sensing information.

In one embodiment, in order to detect a proximity event only within the selected detection range, the touch processing method further includes: detecting whether a proximity event exists on the touch panel near the selected N first electrodes according to the two-dimensional sensing information, wherein the proximity event is an event that an external conductive object approaches or touches the touch panel, and when a driving signal is sent to one first electrode corresponding to the proximity event for the first period of time, enough driving signals cannot be measured to one second electrode corresponding to the proximity event to detect the proximity event.

In one embodiment, in order to shorten the detection time as much as possible and increase the detection report rate as much as possible, when a first electrode corresponding to the proximity event sends out a driving signal for N-1 first periods, enough driving signals are measured for a second electrode corresponding to the proximity event to detect the proximity event.

In one embodiment, to detect a proximity event of the entire touch panel, the touch processing method further includes: repeating the above steps until all the first electrodes are selected as the detection range by the selecting step.

In one embodiment, in order to enhance or reduce the detection accuracy of a certain area of the touch panel or detect the remaining distortion zero range of the touch panel, the detection range may be reduced or increased, and M first electrodes are selected when the step of selecting the detection range is performed at least one kth time, where M is a positive integer greater than 2 and M is not equal to N.

In one embodiment, since the proximity events are generally continuous, in order to enhance the detection accuracy of the proximity range of another proximity event detected at the previous time, the k-th execution of the step of selecting the detection range selects the M first electrodes corresponding to another proximity event detected at the previous time, where M is smaller than N.

In one embodiment, in order to detect a proximity event of the entire touch panel, particularly for a proximity event in two adjacent edge regions of the detection range, the touch processing method further includes: obtaining a plurality of pieces of dimension sensing information obtained after the above steps are repeatedly executed; calculating the two-dimensional sensing information of the full touch panel corresponding to the touch panel according to the two-dimensional sensing information and the N selected first electrodes corresponding to the two-dimensional sensing information; and detecting whether a proximity event exists on the touch panel according to the full-touch panel two-dimension sensing information.

In one embodiment, to avoid continuously interfering with adjacent regions, the i-th first electrode not selected in the i-th combination is not adjacent to the i + 1-th first electrode not selected in the i + 1-th combination.

In one embodiment, the step of selecting N-1 first electrodes in the ith combination is performed randomly in order to avoid generating periodic electromagnetic interference.

In one embodiment, to generate the sensing information value of the driving signal corresponding to each first electrode, among the sensing information in two dimensions, the sensing information corresponding to the ith first electrode is the difference between the sensing information in the one dimension corresponding to the full period and the quotient, wherein the quotient is the quotient of the sensing information in the N-i +1 th period and the one dimension divided by (N-1).

In one embodiment, the step of simultaneously sending driving signals to the plurality of first electrodes in the ith combination for the first period of time in order to generate the sensing information value corresponding to the driving signal of each first electrode further comprises: simultaneously sending out a second driving signal for the first period of time for one of the first electrodes outside the ith combination, wherein among the two-dimensional sensing information, the sensing information corresponding to the ith first electrode is the product of (N-2)/N and a difference value, the difference value is the sensing information of the full-period one dimension minus the sensing information of the nth-i + 1-period one dimension, and the second driving signal is the inverted signal of the driving signal.

According to an embodiment of the present invention, a touch processing apparatus for controlling a touch panel including a plurality of first electrodes parallel to a first direction and a plurality of second electrodes parallel to a second direction is provided, the touch processing apparatus including: a driving circuit module; a sensing circuit module; the connection network module is used for connecting the driving circuit module to any one or more first electrodes and connecting the sensing circuit module to any one or more second electrodes; and a processor module for executing the program stored in the non-volatile memory to implement the following steps: selecting a detection range, wherein the detection range comprises N first electrodes, and N is a positive integer greater than 2; the following steps are repeatedly performed N times: selecting N-1 of the N first electrodes as an ith combination, wherein i is a positive integer from 1 to N; enabling the driving circuit module to simultaneously send driving signals to the plurality of first electrodes in the ith combination for a first period of time; and enabling the sensing circuit module to measure the induced driving signals through the plurality of second electrodes to obtain the sensing information of the ith period one dimension, wherein the ith combination and the jth combination respectively comprise different combinations of the plurality of first electrodes, j is a positive integer from 1 to N, and i is not equal to j; respectively summing all the ith time interval one-dimensional sensing information into full time interval one-dimensional sensing information; and calculating two-dimension sensing information according to the all-time one-dimension sensing information and all the i-th time one-dimension sensing information.

In one embodiment, in order to detect a proximity event only within the selected detection range, the processor module is further configured to execute a program to: detecting whether a proximity event exists on the touch panel near the selected N first electrodes according to the two-dimensional sensing information, wherein the proximity event is an event that an external conductive object approaches or touches the touch panel, and when a driving signal is sent to one first electrode corresponding to the proximity event for the first period of time, enough driving signals cannot be measured to one second electrode corresponding to the proximity event to detect the proximity event.

In one embodiment, to detect a proximity event of the entire touch panel, the processor module is further configured to execute a program to: repeating the above steps until all the first electrodes are selected as the detection range by the selecting step.

In one embodiment, since the proximity events are generally continuous, in order to enhance the detection accuracy of the proximity range of another proximity event detected at the previous time, the k-th time of performing the step of selecting the detection range, the M first electrodes are selected corresponding to another proximity event detected at the previous time, where M is smaller than N.

In one embodiment, in order to detect a proximity event of the entire touch panel, particularly for a proximity event in two adjacent edge zones of the detection range, the processor module is further configured to execute a program to: acquiring a plurality of two-dimensional sensing information obtained after the steps are repeatedly executed; calculating the two-dimensional sensing information of the full touch panel corresponding to the touch panel according to the two-dimensional sensing information and the N selected first electrodes corresponding to each two-dimensional sensing information; and detecting whether a proximity event exists on the touch panel according to the full-touch panel two-dimension sensing information.

In one embodiment, to generate the sensing information value corresponding to the driving signal of each first electrode, among the sensing information in two dimensions, the sensing information corresponding to the ith first electrode is the difference between the sensing information in the one dimension corresponding to the full period and the quotient, wherein the quotient is the quotient of the sensing information in the N-i +1 th period and the one dimension divided by (N-1).

According to an embodiment of the present invention, a touch system is provided, which includes the touch panel and the touch processing device.

The embodiments described in the present application do not limit the scope of the present invention. Various modifications and improvements may be made to the embodiments by those skilled in the art. The technical features described in one embodiment can be applied to other embodiments without technical contradiction. Components or steps having the same name but corresponding different reference characters may have the same technical features between the embodiments. The steps of the action mechanism or flow of each component in the claims, specification or drawings may be implemented in any time sequence as long as there is no cause and effect relationship. The illustrated portions may not be drawn in their relative sizes, and the dimensions of some portions may be different from those of other portions in order to highlight them. And irrelevant details may not be drawn in their entirety for clarity of illustration.

Claims

1. A touch processing method, applied to a touch panel including a plurality of first electrodes parallel to a first direction and a plurality of second electrodes parallel to a second direction, the touch processing method comprising:

selecting a detection range, wherein the detection range comprises N first electrodes, and N is a positive integer greater than 2;

the following steps are repeatedly performed N times:

selecting N-1 of the N first electrodes as an ith combination, wherein i is a positive integer from 1 to N;

simultaneously sending out driving signals to the plurality of first electrodes in the ith combination for a first period of time; and

measuring the induced driving signals through the plurality of second electrodes to obtain ith period one-dimensional sensing information, wherein the ith combination and the jth combination respectively comprise different combinations of the plurality of first electrodes, j is a positive integer from 1 to N, and i is not equal to j;

respectively summing all the ith time interval one-dimensional sensing information into full time interval one-dimensional sensing information; and

and calculating two-dimension sensing information according to the one-dimension sensing information in the full period and the one-dimension sensing information in the ith period.

2. The touch processing method according to claim 1, further comprising;

detecting whether a proximity event exists in the touch panel near the selected N first electrodes according to the two-dimension sensing information, wherein the proximity event is an event that an external conductive object approaches or touches the touch panel,

wherein when a drive signal is emitted for the first period of time to a first electrode corresponding to the proximity event, a sufficient drive signal cannot be measured for a second electrode corresponding to the proximity event to detect the proximity event.

3. The touch processing method of claim 2, wherein a sufficient driving signal is measured for one of the second electrodes corresponding to the proximity event to detect the proximity event when the one of the first electrodes corresponding to the proximity event sends a driving signal for N-1 of the first periods.

4. The touch processing method of claim 1, further comprising:

repeating the steps of claim 1 until all of the first electrodes are selected as the detection range by the selecting step.

5. The touch processing method of claim 4, wherein M first electrodes are selected when the step of selecting the detection range is performed at least at a kth time, where M is a positive integer greater than 2 and M is not equal to N.

6. The touch processing method of claim 5, wherein the M first electrodes selected during the k-th execution of the step of selecting the detection range correspond to another proximity event of a previous detection, where M is smaller than N.

7. The touch processing method of claim 4, further comprising:

acquiring a plurality of pieces of the dimensional sensing information obtained after repeatedly performing the steps of claim 1;

calculating the two-dimensional sensing information of the full touch panel corresponding to the touch panel according to the two-dimensional sensing information and the N selected first electrodes corresponding to the two-dimensional sensing information; and

and detecting whether a proximity event exists on the touch panel according to the full-touch panel two-dimension sensing information.

8. The touch processing method of claim 1, wherein the i-th first electrode not selected in the i-th combination is not adjacent to the i + 1-th first electrode not selected in the i + 1-th combination.

9. The touch processing method of claim 1, wherein the step of selecting N-1 first electrodes in the ith combination is performed randomly.

10. The touch processing method of claim 1, wherein the sensing information corresponding to the ith sensing electrode in the two-dimensional sensing information is a difference value between the sensing information corresponding to the one-dimensional sensing information in the full period and a quotient, wherein the quotient is a quotient obtained by dividing the sensing information in the N-i + 1-th period by (N-1).

11. The touch processing method of claim 1, wherein the step of simultaneously sending driving signals to the first electrodes in the ith combination for the first period of time further comprises:

simultaneously sending out a second driving signal for the first period of time for one of the first electrodes outside the ith combination, wherein among the two-dimensional sensing information, the sensing information corresponding to the ith first electrode is the product of (N-2)/N and a difference value, the difference value is the sensing information of the full-period one dimension minus the sensing information of the nth-i + 1-period one dimension, and the second driving signal is the inverted signal of the driving signal.

12. A touch processing apparatus for controlling a touch panel including a plurality of first electrodes parallel to a first direction and a plurality of second electrodes parallel to a second direction, the touch processing apparatus comprising:

a driving circuit module;

a sensing circuit module;

the connection network module is used for connecting the driving circuit module to any one or more first electrodes and connecting the sensing circuit module to any one or more second electrodes; and

the processor module is used for executing the program stored in the non-volatile memory so as to realize the following steps:

the following steps are repeatedly performed N times:

enabling the driving circuit module to simultaneously send driving signals to the plurality of first electrodes in the ith combination for a first period of time; and

the sensing circuit module measures the induced driving signals through the plurality of second electrodes to obtain the sensing information of one dimension in the ith period, wherein the ith combination and the jth combination respectively comprise different combinations of the plurality of first electrodes, j is a positive integer from 1 to N, and i is not equal to j;

13. The touch processing device of claim 12, wherein the processor module is further configured to execute a program to:

14. The touch processing device of claim 13, wherein a sufficient driving signal is measured for one of the second electrodes corresponding to the proximity event to detect the proximity event when the one of the first electrodes corresponding to the proximity event sends a driving signal for N-1 of the first periods.

15. The touch processing device of claim 12, wherein the processor module is further configured to execute a program to:

repeating the steps of claim 12 until all of the first electrodes are selected as the detection range by the selecting step.

16. The touch processing device of claim 15, wherein M first electrodes are selected when the step of selecting the detection range is performed at least at a kth time, where M is a positive integer greater than 2 and M is not equal to N.

17. The touch processing device of claim 16, wherein the M first electrodes selected during the k-th execution of the step of selecting a detection range correspond to another proximity event of a previous detection, where M is less than N.

18. The touch processing device of claim 15, wherein the processor module is further configured to execute a program to:

acquiring a plurality of two-dimensional sensing information obtained after repeatedly performing the steps of claim 12;

calculating the two-dimensional sensing information of the full touch panel corresponding to the touch panel according to the two-dimensional sensing information and the N selected first electrodes corresponding to each two-dimensional sensing information; and

19. The touch processing device of claim 12, wherein the i-th first electrode not selected in the i-th combination is not adjacent to the i + 1-th first electrode not selected in the i + 1-th combination.

20. The touch processing device of claim 12, wherein the step of selecting N-1 first electrodes in the ith combination is performed randomly.

21. The touch processing device of claim 12, wherein the sensing information corresponding to the ith electrode in the two-dimensional sensing information is a difference between the sensing information corresponding to the one-dimensional sensing information in the full period and a quotient, wherein the quotient is a quotient obtained by dividing the sensing information in the N-i + 1-th period by (N-1).

22. The touch processing device of claim 12, wherein the step of simultaneously sending driving signals to the first electrodes in the ith combination for the first period of time further comprises:

23. A touch system comprising the touch panel according to any one of claims 12 to 22 and the touch processing device.