TWI724728B - Touch sensitive processing method and apparatus and touch sensitive system - Google Patents

Abstract

A touch sensitive processing method, comprising: selecting a detection area including N first electrodes, where N is a positive integer larger than 2; repeating following steps N times: selecting a i-th combination including N-1 first electrodes, where i is a positive integer ranging from 1 to N; simultaneously emitting a driving signal to the first electrodes included in the i-th combination; and sensing the driving signal from multiple second electrodes to generate a i-th period one dimensional sensing information, where a combination of first electrodes included in the i-th combination is different a combination of first electrodes included in the j-th combination, where j is a positive integer ranging from 1 to N, i does not equal to j; adding all of the i-th period one dimensional sensing information as a full period one dimensional sensing information, respectively; and calculating a two dimensional sensing information accordingly.

Description

Touch processing method, device and touch system

This application relates to touch detection, and particularly relates to a touch processing method for mutual capacitance sensing.

The touch screen or panel is one of the common I/O interfaces of modern electronic systems. As the size of the touch screen becomes larger and larger, the number of touch electrodes on the touch screen increases, and the speed of scanning the touch screen for external conductive objects becomes slower. How to speed up the scanning speed of the touch screen so as to maintain or even speed up the frequency of reporting the scanning results is the problem to be solved by this application.

The present application provides a touch processing method suitable for a touch panel. The touch panel includes some first electrodes parallel to a first direction and some second electrodes parallel to a second direction. The touch processing method includes: Select a detection range, the detection range includes N of the first electrodes, where N is a positive integer greater than 2; repeat the following steps N times: select N-1 of the N first electrodes as one The i-th combination, where i is a positive integer from 1 to N; the first electrodes in the i-th combination simultaneously send driving signals for a first period of time; and measure the induced signals through the second electrodes Drive signals to obtain one-dimensional sensing information for the i-th period, where the combinations of the first electrodes included in the i-th combination and the j-th combination are different, j is a positive integer from 1 to N, and i is not equal to j; Separately sum up all the one-dimensional sensing information for the i-th period into a full-period one-dimensional sensing information; and based on the full-period one-dimensional sensing information and all the one-dimensional sensing information for the i-th period, calculate a second Dimensional sensing information.

According to an embodiment of the present application, a touch processing device is provided for controlling a touch panel. The touch panel includes some first electrodes parallel to a first direction and some second electrodes parallel to a second direction. The touch processing device includes: a driving circuit module; a sensing circuit module; a connection network module for connecting the driving circuit module to any one or more of the first electrodes and connecting the sensing circuit Module to any one or more of the second electrodes; and a processor module for executing programs stored in the non-volatile memory to implement the following steps: select a detection range, the detection range includes N The first electrode, where N is a positive integer greater than 2; repeat the following steps N times: select N-1 of the N first electrodes as an i-th combination, where i is a positive integer from 1 to N ; Make the drive circuit module simultaneously send out drive signals for the first electrodes in the i-th combination for a first period of time; and make the sensing circuit module measure the induced signals through the second electrodes Drive signals to obtain the one-dimensional sensing information for the i-th period, wherein the combinations of the first electrodes included in the i-th combination and the j-th combination are different, j is a positive integer from 1 to N, and i is not equal to j; respectively; Sum all the one-dimensional sensing information of the i-th period into a full-period one-dimensional sensing information; and calculate a second-dimension based on the full-period one-dimensional sensing information and all the one-dimensional sensing information of the i-th period Sensing information.

According to an embodiment of the present application, a touch system is provided, including the above-mentioned touch panel and the touch processing device.

T時段的感測時間。當N越大時，可以節省越 多感測時間。本申請的優點在於能加速觸控螢幕的掃描速度，以便加快掃描結果的報告頻率。 According to the touch processing method, device, and touch system provided by the present application, compared with the traditional mutual capacitance sensing method, within the desired detection range, a fixed arithmetic operation time can be spent, thereby reducing

Sensing time in T period. When N is larger, more sensing time can be saved. The advantage of this application is that it can speed up the scanning speed of the touch screen, so as to speed up the report frequency of the scanning results.

100‧‧‧Touch Control System

110‧‧‧Touch processing device

111‧‧‧Interconnection Network Module

112‧‧‧Drive circuit module

113‧‧‧Sensing circuit module

114‧‧‧Processor Module

115‧‧‧Interface Module

120‧‧‧Touch screen or panel

121、121A~C‧‧‧First electrode

122, 122A~H‧‧‧Second electrode

130‧‧‧Touch Pen

135‧‧‧Touchpad eraser

140‧‧‧Host

141‧‧‧I/O interface module

142‧‧‧CPU Module

143‧‧‧Graphics processor module

144‧‧‧Memory Module

145‧‧‧Network Interface Module

146‧‧‧Memory Module

300‧‧‧Mutual capacitance sensing method

310~390‧‧‧Step

400‧‧‧Mutual capacitance sensing method

FIG. 1 is a schematic block diagram of a touch system according to an embodiment of the present application.

FIG. 2 is a schematic diagram of a touch screen according to an embodiment of the present application.

3 is a schematic flowchart of a mutual capacitance sensing method according to an embodiment of the invention.

4 is a schematic flowchart of a mutual capacitance sensing method according to another embodiment of the invention.

Please refer to FIG. 1, which is a block diagram of a touch system 100 according to an embodiment of the present invention. The touch control system 100 may be a common desktop, laptop, tablet personal computer, industrial control computer, smart phone or other form of computer system with touch function.

The touch system 100 may 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 may further include one or more stylus 130 and/or touch pad wiper 135. Hereinafter in this application, the touch panel or screen 120 may be generally referred to as a touch screen 120, but if it is in an embodiment lacking display function, a person of ordinary skill in the art can know that the touch screen referred to in this application is 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 intersect with a plurality of second electrodes 122 Wrong in order to form multiple sensing points or sensing areas. Similarly, the second electrode 122 may be interlaced with a 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 the first touch electrode 121 in the present application, and the second electrode 122 may also be referred to as the second touch electrode 122. This application also collectively refers to the first electrode 121 and the second electrode 122 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 the plurality of conductive sheets of each first electrode 121 or the second electrode 122 are connected by a bridge. The first electrode 121 and the second electrode 122 may also be on different electrode layers stacked one above the other. Unless otherwise specified, the present application can generally be applied to a single layer or multiple electrode layer embodiments. The first axis and the second axis are generally perpendicular to each other, but the present application does not limit the first axis to be perpendicular to the second axis. In an embodiment, the first axis may be a horizontal axis or an update axis of the touch screen 120.

The touch processing device 110 may include the following hardware circuit modules: an Interconnection Network module 111, a driving circuit module 112, a sensing circuit module 113, a processor module 114, and An interface module 115. The touch processing device 110 may be implemented in a single integrated circuit, and the integrated circuit may include one or more chips. The touch processing device 110 can also be realized by using multiple integrated circuits and an interconnecting circuit board carrying the multiple integrated circuits. The touch processing device 110 can also be implemented in the same integrated circuit as the aforementioned host 140, or can be implemented in the same chip as the aforementioned host 140. In other words, this application does not limit the implementation of the touch processing device 110.

The network connection module 111 is used to respectively connect the first electrodes 121 and/or the second electrodes 122 of the touch screen 120. The connection network module 111 can accept the processor The control command of the module 114 is used to connect the driving circuit module 112 and any one or more touch electrodes, and also used to connect the sensing circuit module 113 and any one or more touch electrodes. The connection network module 111 may include a combination of one or more multiplexers (MUX) to implement the above-mentioned functions.

The driving circuit module 112 may include components such as a clock 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 for processing according to the The control commands of the controller module 114 provide driving signals to any one or more touch electrodes through the above-mentioned connection network module 111. Various analog or digital signal modulations can be performed on the above-mentioned driving signals to transmit certain messages. The above-mentioned modulation methods include but are not limited to frequency modulation (FM), phase modulation (Phase Modulation), amplitude modulation (AM), double sideband modulation (DSB), single sideband modulation (SSB-AM), residual sideband modulation (Vestigial Sideband Modulation), Amplitude Offset Modulation (ASK), Phase Offset Modulation (PSK), Quadrature Amplitude Modulation (QAM), Frequency Offset Modulation (FSK), Continuous Phase Modulation (CPM), Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Orthogonal Frequency Division Multiplexing (OFDM), Pulse Width Modulation (PWM) and other technologies. The driving signal can include one or more square waves, sine 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 clock 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 Components such as a sensor are used to sense any one or more touch electrodes through the above-mentioned connection network module 111 according to the control command of the processor module 114. When the touch signal is sent through the above-mentioned one touch electrode, the other touch electrode can sense the touch signal. The sensing circuit module 113 can cooperate with the modulation method performed by the above-mentioned driving circuit module 112. According to the formula, corresponding demodulation is performed on the driving signal sensed by the other touch electrode, so as to restore the information carried by the driving signal. The sensing circuit module 113 can include one or more channels, and each channel can be connected to any one or more touch electrodes through the connection network module 111. At the same time, each channel can be sensed and demodulated at the same time.

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

The processor module 114 may include a digital signal processor for connecting the analog front-end circuits of the driving circuit module 112 and the sensing circuit module 113 respectively, or may be respectively connecting the driving circuit module 112 and the sensing circuit module 113. The digital back-end circuit of the circuit module 113. The processor module 114 may include an embedded processor, a non-volatile memory, and a volatile memory. The non-volatile memory can store a common operating system or a real-time operating system, as well as applications running under the operating system. The aforementioned operating system and application programs include multiple instructions and data. After the processor (including embedded processors and/or digital signal processors) executes these instructions, they can be used to control other modules of the touch processing device 110. The group includes the connection network module 111, the drive circuit module 112, the sensing circuit module 113, and the interface module 115. For example, the processor module 114 may include 8051 series processors commonly used in the industry, Intel i960 series processors, ARM Cortex-M series processors, and so on. This application does not limit the type and number of processors included in the processor module 114.

The multiple instructions and data mentioned above can be used to implement the steps mentioned in this application, as well as the processes and methods composed of these steps. Certain instructions can operate independently within the processor module 114, such as arithmetic and logic operations. Other instructions may be used to control other modules of the touch processing device 110, and these instructions may include the I/O interface of the processor module 114 to control other modules. Other modules can also provide information to the operating system and/or application programs executed by the processor module 114 through the I/O interface of the processor module 114. Those of ordinary skill in the art should have general knowledge of computer organization and architecture, and can understand that the processes and methods mentioned in this application can be implemented by the above-mentioned modules and commands.

The above-mentioned interface module 115 may include various serial or parallel buses, such as universal serial bus (USB), integrated circuit bus (I ² C), peripheral interconnection standard (PCI), and fast peripherals. I/O interfaces of industry standards such as interconnection standards (PCI-Express) and IEEE 1394. The touch processing device 110 is connected to the host 140 through the interface module 115.

The touch control system 100 may include one or more touch pens 130 and/or touch pad wipers 135. The aforementioned stylus 130 or touch pad wiper 135 may be a transmitter that emits electrical signals, which may include an active transmitter that actively emits electrical signals, or a passive transmitter that passively emits electrical signals, or It is called a reactive transmitter that sends out electric signals in response to external electric signals. The above-mentioned stylus 130 or touch pad wiper 135 may include one or more electrodes for receiving electrical signals from the touch screen 120 synchronously or asynchronously, or to transmit electrical signals to the touch screen 120 synchronously or asynchronously. 120 sends out an electric signal. These electrical signals can use one or more modulation methods as described above.

The aforementioned touch pen 130 or touch pad wiper 135 may be a conductor, which is used to conduct a driving signal or ground through the user's hand or body. The aforementioned stylus 130 or touchpad eraser 135 can be It is connected to the I/O interface module 141 of the host 140 or other modules under the I/O interface module 141 in a wired or wireless manner.

The touch processing device 110 can use the touch screen 120 to detect one or more external conductive objects, such as human fingers, palms, or a passive stylus 130 or touch pad wiper 135, and can also detect The stylus 130 or the touch pad wiper 135 that sends out electrical signals. The touch processing device 110 can use mutual-capacitance or self-capacitance to detect external conductive objects. The above-mentioned stylus 130 or touchpad wiper 135 and the touch processing device 110 can use the above-mentioned signal modulation and corresponding signal demodulation methods to transmit information by using electrical signals. The touch processing device 110 can use electrical signals to detect that the stylus 130 or the touchpad wipe 135 approaches or touches one or more proximity positions of the touch screen 120, and the touch pen 130 or the touchpad wipe 135 is on The state of the sensor (such as a pressure sensor or a button), the pointing of the stylus 130 or the touchpad wiper 135, or the tilt angle of the stylus 130 or the touchpad wiper 135 corresponding to the plane of the touch screen 120 Wait for the message.

The host 140 is the main device that controls the touch system 110, and may include an I/O interface module 141 connected to the interface module 115, a CPU module 142, a graphics processor module 143, and A memory module 144 of the CPU module 142, a network interface module 145 and a memory module 146 connected to the I/O interface module 141.

The memory module 146 includes non-volatile memory, and common examples are hard disks, electronically erasable rewritable read-only memory (EEPROM), or flash memory. The memory module 146 can store a common operating system and application programs executed under the operating system. The network interface module 145 may include a hardware network connection interface for wired connection and/or wireless connection. The network interface module 145 can comply with common industry standards, such as IEEE 802.11 wireless zone LAN standards, IEEE 802.3 wired LAN standards, 3G, 4G, and/or 5G wireless communication network standards, Bluetooth wireless communication network standards, etc.

The CPU module 142 can be directly or indirectly connected to the aforementioned I/O interface module 141, graphics processor module 143, memory module 144, network interface module 145, and a memory module 146. The central processing unit 142 may include one or more processors or processor cores. Common processors can include processors with the x86 and x64 instruction sets of Intel, Supermicro, and VIA, or processors with the ARM instruction set of Apple, Qualcomm, and MediaTek, as well as other types of complex computers. Instruction Set (CISC) or Reduced Computer Instruction Set (RISC) processor. The aforementioned operating system and application program include a plurality of instructions and data corresponding to the aforementioned instruction set. After these instructions are executed by the CPU module 142, they can be used to control other modules of the touch system 100.

The optional graphics processor module 143 is usually used to process the calculation part related to the graphics output. The graphics processor module 143 can be connected to the aforementioned touch screen 120 for controlling the output of the touch screen 120. In some applications, the host 140 may not require the special processing of the graphics processor module 143, and can directly make the CPU module 142 execute the calculation part related to graphics output.

The host 140 may also include other components or components not shown in FIG. 1, such as an audio input/output interface, a keyboard input interface, a mouse input interface, a trackball input interface, and/or other hardware modules. A person of ordinary skill in the art should have general knowledge of computer structure and architecture. It can be understood that the touch control system 100 mentioned in this application is only a schematic description, and the rest are related to the technical features of the invention provided in this application. , Need to refer to the specification and the scope of patent application.

Please refer to FIG. 2, which is a schematic diagram of the touch screen 120 according to an embodiment of the present application. For the convenience of description, the touch screen 120 only includes three first electrodes 121, which are sequentially the first electrodes 121A, 121B, and 121C. The touch screen 120 includes a plurality of second electrodes 122A-122H. Those of ordinary skill in the art can understand that the touch screen 120 may include N first electrodes 121, and N is a positive integer. In some embodiments, N is a positive integer greater than 10 or more.

In the traditional 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 made to sense all the second electrodes 122 three times at the same time, so as to obtain three sets of one-dimensional sensing information. Each set of one-dimensional sensing information includes the sensing result of each second electrode 122. The three sets of one-dimensional sensing information can form two-dimensional sensing information or sensing images according to the sequence of the first electrode 121 that sends out the driving signal corresponding to them. Using the second-dimensional sensing information or sensing image, the processor module 114 can detect whether there is an external conductive object approaching the touch screen 120.

Assuming that each first electrode 121 needs to be driven for a period of T, the sensing circuit module 113 can accumulate a sufficient amount of signals. In the above-mentioned traditional mutual capacitance detection method, the time required to scan the touch screen 120 once requires at least 3T. In general, if the touch screen 120 has N first electrodes 121, at least N×T time length is required to scan the touch screen 120 once.

According to an embodiment of the present invention, a method of scanning multiple first electrodes 121 at the same time is provided. Please refer to Table 1, which shows a timing table for simultaneous scanning of the touch screen 120 shown in FIG. 2.

In the embodiment shown in Table 1, the driving and sensing operations are performed in three time periods, but the length of each time period is T/2. In other words, for each time period, the driving signal sent by each first electrode 121 is not enough for the sensing circuit module 113 to accumulate a sufficient amount of sensing signals. However, after three time periods, the length of time for each first electrode 121 to emit a 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 induction signal sensed on any one of the second electrodes 122 accumulates the induction energy of the driving signals emitted by the two first electrodes 121. In the last column of Table 1, you can see the source of the driving signal induced by any second electrode 122 in each period. For example, in the first During the period, the source of the driving signal induced by any one of the second electrodes 122 is the first electrodes 121A and 121B. In each time period, the signal obtained by sensing each second electrode 122 can also constitute one-dimensional sensing information.

After the three-time driving and sensing operations are completed, a set of first-period one-dimensional sensing information, a second-period one-dimensional sensing information, and a third-period one-dimensional sensing information can be generated respectively. Then, each element of the three sets of one-dimensional sensing information is accumulated to obtain a set 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 that of the first electrode 121A, the first electrode 121B, and the first electrode 121C in a single period of time. The sum of the driving signals. When the value of any element is divided by two, the accumulated sensing signal corresponds to the sum of the driving signals emitted by the first electrode 121A, the first electrode 121B, and the first electrode 121C in a single time period. Then, the difference obtained by subtracting the half value of any element from the corresponding element of the one-dimensional sensing information in the first period corresponds to the driving signal emitted by the first electrode 121C in a single period. Finally, the difference is multiplied by a double product, which corresponds to the driving signal sent by the first electrode 121C in the two time periods.

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

Similarly, the difference obtained by subtracting half of the value of any element of the one-dimensional sensing information after accumulation from the corresponding element of the one-dimensional sensing information in the third period corresponds to the output of the first electrode 121A in a single period The drive signal. Then multiply the difference by the product of twice, and it will be the same This corresponds to the driving signal sent by the first electrode 121A in the two periods.

The corresponding element values of the aforementioned one-dimensional sensing information for the first period, the one-dimensional sensing information for the second period, and the one-dimensional sensing information for the third period are denoted as M ₁ , M ₂ and M _{3, respectively} . The element value of the accumulated one-dimensional sensing information is denoted as M _total , which is the _{sum of M 1} +M ₂ +M ₃ .

M _total = M ₁ + M ₂ + M ₃ (1)

_{The element value X C} corresponding to the one-dimensional sensing information of the first electrode 121C can be expressed as:

_{The element value X B} corresponding to the one-dimensional sensing information of the first electrode 121B can be expressed as:

_{The element value X A} corresponding to the one-dimensional sensing information of the first electrode 121A can be expressed as:

After the above-mentioned calculation, one-dimensional sensing information corresponding to the first electrode 121C can be obtained by the above-mentioned first-period one-dimensional sensing information, second-period one-dimensional sensing information, and third-period one-dimensional sensing information. Information, one-dimensional sensing information corresponding to the first electrode 121B, and one-dimensional sensing information corresponding to the first electrode 121A. The three sets of one-dimensional sensing information corresponding to the first electrodes 121A~C respectively correspond to a certain second electrode 122. In other words, three values corresponding to the three intersection points of the first electrodes 122A, 122B, and 122C and a certain second electrode 122 are respectively obtained. The multiple sets of the one-dimensional sensing information corresponding to the multiple second electrodes can also form the second-dimensional sensing information or sensing images. Use the second dimension to sense information or sense shadows For example, the processor module 114 can detect whether there is an external conductive object close to the touch screen 120.

Compared with the traditional method, in the equation (1), the above embodiment additionally needs to perform 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 used in parallel to obtain the sensing values corresponding to the three first electrodes 121, respectively. Since the denominator of division in equations (2), (3), and (4) is 2, the division can be performed by shifting one bit to the right. In general, compared to the traditional mutual capacitance sensing method, the above-mentioned embodiment spends an additional eight times of arithmetic operation time, but reduces the sensing time in the 1.5T period. Since the operation speed of the processor module 114 is much higher than the sensing time of the sensing circuit module 113, and the processor module 114 usually has a vector parallel operation unit, which can process multiple sets of operations at a time, the touch screen is scanned once The time saved by 120 is considerable. Accordingly, it is possible to increase the frequency of the touch processing device 110 reporting that the host 140 touches the control screen 120 with respect to the external conductive object.

According to an embodiment of the present invention, there is provided a method for simultaneously scanning N first electrodes 121 _i , wherein N is a positive integer greater than one, and i is 1 to N. Please refer to Table 2, which shows a timing chart for simultaneously scanning the touch screen 120 with N first electrodes 121.

In the embodiment shown in Table 2, the driving and sensing operations are performed in N time periods, but the length of each time period is T/N. In other words, for each time period, _{the driving signal sent by each first electrode 121 i} is not enough for the sensing circuit module 113 to accumulate a sufficient amount of sensing signals. However, after N time periods, the _{length of time for each first electrode 121 i to} emit a 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 induction signal sensed on any one of the second electrodes 122 accumulates the induction energy of the driving signal sent by the (N-1) first electrodes 121. In the last column of Table 2, you can see the source of the driving signal induced by any second electrode 122 in each time period. For example, in the first time period, the source of the driving signal induced by any one of the second electrodes 122 is the first electrodes 121 ₁ to 121 _N-1 . In each time period, the signal obtained by sensing each second electrode 122 can also constitute one-dimensional sensing information.

After the driving and sensing operations in N time periods are completed, N sets of one-dimensional sensing information for the i-th time period can be generated respectively. Then, each element of the N sets of one-dimensional sensing information is accumulated to obtain a set 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 (N-1) times the value of the first electrode 121 ₁ to the first electrode 121 _{N in a single time period.} The sum of the drive signals sent out. When the value of any element is divided by (N-1), the accumulated sensing signal corresponds to the sum of the driving signals from the _{first electrode 121 1} to the first electrode 121 _{N in a single period.} Then, the quotient of any element divided by (N-1) is subtracted from the difference of the corresponding element of the one-dimensional sensing information in the first period, which corresponds to the first electrode 121 _{N in a single period of time.} The drive signal. Multiplying the difference by the product of (N-1) times corresponds to the driving signal sent by the _{first electrode 121 N in (N-1) periods.}

The corresponding element values of the one-dimensional sensing information in the i-th period are respectively denoted as M _i , and the element value of the accumulated one-dimensional sensing information is denoted as M _total , which can be expressed as:

Corresponding to the first electrode 121 _i One dimension of the sensing information element value X _i may be expressed as:

_{After the above calculation, the one-dimensional sensing information corresponding to the N first electrodes 121 i} can be obtained from the above-mentioned N sets of one-dimensional sensing information for the i-th period. The N groups of one-dimensional sensing information corresponding to the first electrode 121 _i can also form two-dimensional sensing information or sensing images. Using the second-dimensional sensing information or sensing image, the processor module 114 can detect whether there is an external conductive object approaching the touch screen 120.

T時段的感測時 間。舉例來說，當N為10的時候，可以減少8.89T的感測時間。當N值越大，則節省更多感測時間。 Compared with the traditional method, in the equation (5), the above embodiment additionally needs to perform (N-1) additions in parallel to obtain the accumulated one-dimensional sensing information. Then, in the equation (6), one division and two subtractions are used in parallel to obtain the sensing values corresponding to the N first electrodes 121 respectively. In general, compared with the traditional mutual capacitance sensing method, the above-mentioned embodiment additionally spends a fixed arithmetic operation time, but reduces

Sensing time in T period. 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 operation speed of the processor module 114 is much higher than the sensing time of the sensing circuit module 113, and the processor module 114 usually has a vector parallel operation unit, which can process multiple sets of operations at a time, the touch screen is scanned once The time saved by 120 is considerable. Accordingly, it is possible to increase the frequency of the touch processing device 110 reporting that the host 140 touches the control screen 120 with respect to the external conductive object.

In an embodiment, the touch screen 120 may have HxN first electrodes 121, or more than (H−1)N but less than HxN first electrodes 121. Therefore, it can be divided into H operations, and H is a positive integer. Each calculation can perform the above-mentioned mutual capacitance detection on the N first electrodes 121, so as to obtain the one-dimensional sensing information corresponding to the N first electrodes 121. After performing H operations, one-dimensional sensing information corresponding to H×N first electrodes 121 can be obtained. Using the second-dimensional sensing information or sensing image, the processor module 114 can detect whether there is an external conductive object approaching the touch screen 120.

In this embodiment, the N first electrodes 121 for each operation are not They must all be adjacent to each other. In order to reduce the electromagnetic interference phenomenon caused by the fixed sequence of the driving signals, it is possible to select N non-adjacent first electrodes 121 for detection in each of the H operations. Or in each of the H operations, N adjacent first electrodes 121 are selected for detection. However, in two consecutive operations, the 2N first electrodes 121 may not be adjacent. The aforementioned selection of the first electrode 121 can also be randomly generated in a random number manner to avoid electromagnetic interference with a fixed frequency.

According to an embodiment of the present invention, a method of scanning multiple first electrodes 121 at the same time is provided. Please refer to Table 3, which shows a timing chart of simultaneous scanning of the touch screen 120 shown in FIG. 2.

In the embodiment shown in Table 3, the driving and sensing operations are performed in three time periods. Karma, but the length of each period is T/2. Compared with the embodiment in Table 1, in the first time period, the driving signal sent by the first electrode 121C and the driving signal sent by the first electrode 121A or the first electrode 121B are in opposite phases. Since the inverted driving signals will cancel each other when received by the same second electrode 122, the driving signal received by a certain second electrode 122 in the first period can be expressed as 121A+121B-121C. Similarly, in the second time period, the drive signal sent by the first electrode 121B and the drive signal sent by the first electrode 121A or the first electrode 121C are inverted, and the drive signal received by the second electrode 122 can be Expressed as 121A-121B+121C. Similarly, in the second time period, the driving signal sent by the first electrode 121A and the driving signal sent by the first electrode 121B or the first electrode 121C are inverted, and the driving signal received by the second electrode 122 can be Expressed as -121A+121B+121C.

After the three-time driving and sensing operations are completed, a set of first-period one-dimensional sensing information, a second-period one-dimensional sensing information, and a third-period one-dimensional sensing information can be generated respectively. Then, each element of the three sets of one-dimensional sensing information is accumulated to obtain a set 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 the positive phase emitted by the first electrode 121A, the first electrode 121B, and the first electrode 121C in a single time period. The sum of the driving signals is expressed as 121A+121B+121C.

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

_{The element value X C} corresponding to the one-dimensional sensing information of the first electrode 121C can be expressed as:

X _C =( M _total - M ₁ )/2 (7)

_{The element value X B} corresponding to the one-dimensional sensing information of the first electrode 121B can be expressed as:

X _B =( M _total - M ₂ )/2 (8)

_{The element value X A} corresponding to the one-dimensional sensing information of the first electrode 121A can be expressed as:

X _A =( M _total - M ₃ )/2 (9)

After the above-mentioned calculation, one-dimensional sensing information corresponding to the first electrode 121C can be obtained by the above-mentioned first-period one-dimensional sensing information, second-period one-dimensional sensing information, and third-period one-dimensional sensing information. Information, one-dimensional sensing information corresponding to the first electrode 121B, and one-dimensional sensing information corresponding to the first electrode 121A. These three groups respectively correspond to the one-dimensional sensing information of the first electrodes 121A~C, and can also form two-dimensional sensing information or sensing images.

According to an embodiment of the present invention, there is provided a method for simultaneously scanning N first electrodes 121i, wherein N is a positive integer greater than one, and i is 1 to N. Please refer to Table 4, which shows a timing chart for simultaneously scanning the touch screen 120 with N first electrodes 121.

In the embodiment shown in Table 4, as in the embodiment in Table 2, in the i-th period, the first electrode 121 _N-i+1 sends out an inverted driving signal. Such that the first electrode 121 _i corresponding to the sensing information One dimension element value X _i may be expressed as:

_{After the above calculation, the one-dimensional sensing information corresponding to the N first electrodes 121 i} can be obtained from the above-mentioned N sets of one-dimensional sensing information for the i-th period. The N sets of one-dimensional sensing information corresponding to the first electrode 121 _i respectively correspond to a certain second electrode 122. In other words, _{N values corresponding to the N intersection points of the first electrodes 122 1} , 122 ₂ , ..., 122 _N and a certain second electrode 122 are respectively obtained. The multiple sets of the one-dimensional sensing information corresponding to the multiple second electrodes 122 can also form the second-dimensional sensing information or sensing images. Using the second-dimensional sensing information or sensing image, the processor module 114 can detect whether there is an external conductive object approaching the touch screen 120.

T時 段的感測時間。舉例來說，當N為10的時候，可以減少8.89T的感測時間。當N值越大，則節省更多感測時間。 In the equation (10), two divisions and two subtractions are used to obtain the sensing values corresponding to the N first electrodes 121 respectively. In general, compared with the traditional mutual capacitance sensing method, the above-mentioned embodiment additionally spends a fixed arithmetic operation time, but reduces

Sensing time in T period. 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.

Please refer to FIG. 3, which is a schematic flowchart of a mutual capacitance sensing method 300 according to an embodiment of the present invention. The mutual capacitance sensing method can be applied to the touch processing device 110 shown in FIG. 1, in particular, the processor module 114 is used to execute a plurality of instructions compiled according to the method for realizing the mutual capacitance sensing. Touch processing method.

Step 310: Select N first electrodes that have not sent driving signals.

Step 320: Select N-1 of the N first electrodes as a new combination.

Step 330: Simultaneously send driving signals to the first electrodes in the combination to obtain one-dimensional sensing information in the i-th period. Where i can be a positive integer between 1 and N. In step 330, the driving signal is sent through the driving circuit module 112 and the time length of the driving signal induced by the second electrode through the sensing circuit module 113 has the characteristics shown in the embodiment in Table 2.

In an embodiment, step 330 may also send out an inverted driving signal to a first electrode other than the combination at the same time. This embodiment is the same as that described in the embodiments shown in Table 2 and Table 4.

Step 340: Determine whether a driving signal has been issued for the first electrode of the combination N times. If the result is no, the process returns to step 320. If the result is yes, the process goes to step 350.

Step 350: Calculate the one-dimensional sensing information corresponding to the N first electrodes according to the N i-th period of one-dimensional sensing information obtained by executing step 330 N times. When in step 330, the inverted driving signal is not sent through the first electrode other than the combination, the calculation steps of step 350 are as described in the embodiment shown in Table 1 or Table 2. More precisely, it can be done according to equation (6). When in step 350, the inverted driving signal is transmitted through the first electrode other than the combination, the calculation steps of step 350 are as described in the embodiment shown in Table 3 or Table 4. More precisely, it can be done according to equation (10).

Step 360: Determine whether the scanning of the touch screen is completed. If the judgment result is no, the process returns to step 310. If the judgment result is yes, the flow goes to step 370.

Step 370: According to the one-dimensional sensing information corresponding to each first electrode, form the second-dimensional sensing information. Each one-dimensional sensing information in the second-dimensional sensing information is arranged in order according to the relative position of the corresponding first electrode.

Step 380: Calculate the proximity event of the external conductive object according to the second-dimensional sensing information.

Optional step 390: report the proximity event to the host.

Please refer to FIG. 4, which is a schematic flowchart of a mutual capacitance sensing method 400 according to an embodiment of the present invention. The mutual capacitance sensing method can be applied to the touch processing device 110 shown in FIG. 1, in particular, the processor module 114 is used to execute a plurality of fingers compiled according to the method. Let, a touch processing method for realizing the mutual capacitance sensing.

Compared with the mutual capacitance sensing method 300 of FIG. 3, the mutual capacitance sensing method 400 of FIG. 4 obtains the two-dimensional sensing information corresponding to each detection range, calculates and reports the proximity events in the detection range to the Host. The mutual capacitance sensing method 300 of FIG. 3 splices each one-dimensional sensing information into a single full-touch panel two-dimensional sensing information, and then calculates and reports proximity events on the touch panel to the host. The embodiment shown in FIG. 3 has higher accuracy for the proximity events located at the edges of the two detection ranges, but more one-dimensional sensing information must be stored in order to calculate and report points for an entire touch panel. The embodiment of FIG. 4 can individually detect certain detection ranges without having to collect an entire touch panel before performing calculations and reporting points.

According to an embodiment of the present invention, the present application provides a touch processing method suitable for a touch panel. The touch panel includes some first electrodes parallel to a first direction and some second electrodes parallel to a second direction. The touch processing method includes: selecting a detection range including N of the first electrodes, where N is a positive integer greater than 2, and repeating the following steps N times: selecting the N of the first electrodes N-1 as an i-th combination, where i is a positive integer from 1 to N; the first electrodes in the i-th combination simultaneously send driving signals for a first period of time; and through the first The two electrodes measure the induced driving signal to obtain the one-dimensional sensing information for the i-th period. The combinations of the first electrodes included in the i-th combination and the j-th combination are different, and j is a positive integer from 1 to N , I is not equal to j; respectively sum all the one-dimensional sensing information of the i-th period into a full-period one-dimensional sensing information; and according to the full-period one-dimensional sensing information and all the one-dimensional sensing information of the i-th period Information, calculate the second-dimensional sensing information.

In one embodiment, in order to detect the proximity event only within the selected detection range, the touch processing method further includes: detecting the selected N items according to the second-dimensional sensing information Whether there is a proximity event on the touch panel near the first electrode, where the proximity event is an event in which an external conductive object approaches or touches the touch panel, and when the first electrode corresponding to the proximity event is driven When the signal reaches the first period of time, it is impossible to measure enough driving signals for the 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 rate as much as possible, when the first electrode corresponding to the proximity event sends out a driving signal for N-1 of the first period of time Only when the second electrode corresponding to the proximity event can measure enough driving signals to detect the proximity event.

In one embodiment, in order to detect the 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 selection step .

In one embodiment, in order to enhance or weaken the detection accuracy of a certain area of the touch panel, or to detect the remaining zero-distortion range of the touch panel, the detection range can be reduced or increased, and the detection range is executed at least for the kth time. When selecting the detection range step, select M of the first electrodes, where M is a positive integer greater than 2, and M is not equal to N.

In one embodiment, since the proximity events are usually continuous, in order to enhance the detection accuracy of the vicinity of another proximity event detected previously, the M selected when the step of selecting the detection range is executed for the kth time The first electrode corresponds to another proximity event detected last time, where M is less than N.

In one embodiment, in order to detect the proximity events of the entire touch panel, especially for the proximity events at two adjacent edges of the detection range, the touch processing method further includes: obtaining the scope of repeated execution of the patent application Some of the second dimension obtained after each step of item 1 Sensing information; according to the two-dimensional sensing information and the selected N first electrodes respectively corresponding to each of the two-dimensional sensing information, a full touch panel II corresponding to the touch panel is calculated Dimensional sensing information; and detecting whether there is a proximity event on the touch panel according to the two-dimensional sensing information of the full touch panel.

In one embodiment, in order to avoid continuous interference to adjacent areas, the ith first electrode that is not selected in the i-th combination and the first electrode that is not selected in the (i+1)th combination are The i+1 first electrodes are not adjacent.

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

In one embodiment, in order to generate the sensing information value corresponding to the driving signal of each first electrode, among the two-dimensional sensing information, the sensing information corresponding to the i-th first electrode corresponds to A difference between the full-time one-dimensional sensing information and a quotient, wherein the quotient is the quotient of the N-i+1-th one-dimensional sensing information divided by (N-1).

In one embodiment, in order to generate the sensing information value corresponding to the driving signal of each first electrode, the step of simultaneously sending out driving signals for the first electrodes in the i-th combination for the first period of time And further comprising: simultaneously sending a second driving signal to the first electrode outside the i-th combination for the first period of time, wherein in the second-dimension sensing information, corresponding to the i-th first electrode The sensing information of the electrode corresponds to the product of (N-2)/N and a difference, and the difference is the full-time one-dimensional sensing information minus the N-i+1-th one-dimensional sensing information, where The second driving signal is an 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 includes some first electrodes parallel to a first direction and some first electrodes parallel to a second direction. Direction some second electrodes, the touch processing device includes: a drive circuit module; a sensing circuit module; a connection network module for connecting the drive circuit module to any one or more of the first An electrode and connecting the sensing circuit module to any one or more of the second electrodes; and a processor module for executing programs stored in the non-volatile memory to achieve the following steps: selecting a detection range , The detection range includes N first electrodes, where N is a positive integer greater than 2. Repeat the following steps N times: select N-1 of the N first electrodes as an i-th combination, where i is a positive integer from 1 to N; the driving circuit module is made to simultaneously send driving signals to the first electrodes in the i-th combination for a first period of time; and the sensing circuit module is made to pass through the The second electrode measures the induced driving signal to obtain the one-dimensional sensing information in the i-th period. The combinations of the first electrodes included in the i-th combination and the j-th combination are different, and j is a positive value from 1 to N. Integer, i is not equal to j; respectively sum all the one-dimensional sensing information of the i-th period into a full-period one-dimensional sensing information; and according to the full-period one-dimensional sensing information and all the one-dimensional sensing information of the i-th period Measure the information, calculate the one-dimensional sensing information.

In one embodiment, in order to detect the proximity event only in the selected detection range, the processor module is further used to execute a program to realize: according to the second-dimensional sensing information, detect the selected N items Whether there is a proximity event on the touch panel near the first electrode, where the proximity event is an event in which an external conductive object approaches or touches the touch panel, and when the first electrode corresponding to the proximity event is driven When the signal reaches the first period of time, it is impossible to measure enough driving signals for the 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 rate as much as possible, when the proximity event corresponds to one of the first electrodes, it sends out driving signals up to N-1 Only after the first period of time can the second electrode corresponding to the proximity event measure enough driving signals to detect the proximity event.

In one embodiment, in order to detect the proximity event of the entire touch panel, the processor module is further used to execute a program to realize: repeat the steps of item 11 in the scope of the patent application until all the first electrodes are It is selected as the detection range by the selection step.

In one embodiment, in order to enhance or weaken the detection accuracy of a certain area of the touch panel, or to detect the remaining zero-distortion range of the touch panel, the detection range can be reduced or increased, and the detection range is executed at least for the kth time. When selecting the detection range step, select M of the first electrodes, where M is a positive integer greater than 2, and M is not equal to N.

In one embodiment, since the proximity events are usually continuous, in order to enhance the detection accuracy of the vicinity of another proximity event detected in the previous time, the selected detection range step is executed for the kth time. The M first electrodes correspond to another proximity event detected last time, where M is less than N.

In one embodiment, in order to detect the proximity events of the entire touch panel, especially for the proximity events at two adjacent edges of the detection range, the processor module is further used to execute a program to achieve: Some second-dimensional sensing information obtained after repeating the above steps; according to the second-dimensional sensing information and the selected N first electrodes corresponding to each of the second-dimensional sensing information, the corresponding calculation is calculated A full-touch panel two-dimensional sensing information on the touch panel; and detecting whether there is a proximity event on the touch panel based on the two-dimensional sensing information of the full touch panel.

In one embodiment, in order to avoid continuous interference to adjacent areas, the ith first electrode that is not selected in the i-th combination and the first electrode that is not selected in the (i+1)th combination are i+1 The first electrodes are not adjacent.

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

In one embodiment, in order to generate the sensing information value corresponding to the driving signal of each first electrode, among the two-dimensional sensing information, the sensing information corresponding to the i-th first electrode corresponds to A difference between the full-time one-dimensional sensing information and a quotient, wherein the quotient is the quotient of the N-i+1-th one-dimensional sensing information divided by (N-1).

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

According to an embodiment of the present application, a touch system is provided, including the touch panel and the touch processing device.

The embodiments in the specification of this application are not used to limit the scope of the patent application. Those of ordinary skill in the art can make various changes or improvements to the embodiments. It is also possible to apply the technical features described in one embodiment to other embodiments on the premise that there is no technical contradiction. Elements or steps with the same name but corresponding to different reference signs between the embodiments may also have the same technical features. As long as there is no causal relationship between the action mechanism of each element in the scope of the patent application, the specification or the drawings, or the steps of the process, any time can be followed. Order to achieve. The parts of the illustration may not be drawn according to their relative sizes. In order to highlight some parts, the scale of this part may be different from the scale of other parts. And the irrelevant details may not be completely drawn in order to keep the diagram clean.

300‧‧‧Mutual capacitance sensing method

310~390‧‧‧Step

Claims (23)

A touch processing method is suitable for a touch panel. The touch panel includes some first electrodes parallel to a first direction and some second electrodes parallel to a second direction. The touch processing method includes: Select a detection range, the detection range includes N of the first electrodes, where N is a positive integer greater than 2; Repeat the following steps N times: Select N-1 of the N first electrodes as an i-th combination, where i is a positive integer from 1 to N; Simultaneously sending out driving signals for the first electrodes in the i-th combination for a first period of time; and The driving signals sensed by the second electrodes are measured to obtain the one-dimensional sensing information for the i-th period. The combinations of the first electrodes included in the i-th combination and the j-th combination are different, and j is 1 to A positive integer of N, i is not equal to j; Respectively sum up all the one-dimensional sensing information of the i-th period into a full-period one-dimensional sensing information; and According to the full-time one-dimensional sensing information and all the i-th one-dimensional sensing information, the second-dimensional sensing information is calculated. For example, the touch processing method of item 1 in the scope of patent application includes; According to the second-dimensional sensing information, detect whether there is a proximity event on the touch panel near the selected N first electrodes, wherein the proximity event is an external conductive object approaching or touching Events of the touch panel, When the first electrode corresponding to the proximity event sends a driving signal for the first period of time, the second electrode corresponding to the proximity event cannot measure enough driving signals to detect the proximity event . For example, the touch processing method of item 2 of the scope of patent application, wherein when one of the first electrodes corresponding to the proximity event emits a driving signal for N-1 the first period of time, then the first electrode corresponding to the proximity event can The two electrodes measure enough drive signals to detect the proximity event. For example, the touch processing method of item 1 in the scope of patent application includes: Repeat the steps of item 1 of the scope of patent application until all the first electrodes are selected as the detection range by the selection step. For example, the touch processing method of item 4 of the scope of patent application, wherein when the step of selecting the detection range is executed for at least one kth time, M of the first electrodes are selected, where M is a positive integer greater than 2, and M is not equal to N. For example, the touch processing method of item 5 of the scope of patent application, wherein the M first electrodes selected when the step of selecting the detection range is executed for the kth time correspond to another proximity event detected in the previous time, where M is less than N. For example, the touch processing method of item 4 in the scope of patent application includes: Obtain some of the second-dimensional sensing information obtained after repeating the steps of item 1 in the scope of the patent application; According to the two-dimensional sensing information and the selected N first electrodes respectively corresponding to each of the two-dimensional sensing information, a full-touch panel two-dimensional sensing information corresponding to the touch panel is calculated ;as well as According to the second-dimensional sensing information of the full touch panel, it is detected whether there is a proximity event on the touch panel. For example, the touch processing method of item 1 in the scope of the patent application, wherein the ith first electrode that is not selected in the i-th combination and the i+1-th unselected in the i+1th combination The first electrodes are not adjacent. For example, the touch processing method of item 1 in the scope of patent application, wherein the step of selecting N-1 first electrodes in the i-th combination is performed randomly. For example, the touch processing method of item 1 of the scope of patent application, wherein among the second-dimensional sensing information, the sensing information corresponding to the i-th first electrode corresponds to the full-time one-dimensional sensing information and a quotient A difference of the value, where the quotient is the quotient of the one-dimensional sensing information divided by (N-1) in the N-i+1th period. For example, in the touch processing method of claim 1, wherein the step of simultaneously sending driving signals to the first electrodes in the i-th combination for the first period of time further includes: One of the first electrodes outside the i-th combination simultaneously sends out a second driving signal for the first period of time, wherein among the second-dimensional sensing information, corresponding to the sensing information of the i-th first electrode Corresponding to the product of (N-2)/N and a difference, the difference being the full-time one-dimensional sensing information minus the N-i+1-th one-dimensional sensing information, wherein the second driving signal It is the inverted signal of the drive signal. A touch processing device for controlling a touch panel. The touch panel includes some first electrodes parallel to a first direction and some second electrodes parallel to a second direction. The touch processing device includes: A drive circuit module; A sensing circuit module; A connection network module for connecting the driving circuit module to any one or more of the first electrodes and connecting the sensing circuit module to any or more of the second electrodes; and A processor module for executing programs stored in the non-volatile memory to implement the following steps: Select a detection range, the detection range includes N of the first electrodes, where N is a positive integer greater than 2; Repeat the following steps N times: Select N-1 of the N first electrodes as an i-th combination, where i is a positive integer from 1 to N; Enabling the driving circuit module to simultaneously send driving signals to the first electrodes in the i-th combination for a first period of time; and Make the sensing circuit module measure the induced driving signal through the second electrodes to obtain the one-dimensional sensing information of the i-th period, wherein the i-th combination and the j-th combination respectively include the combination of the first electrodes Are different, j is a positive integer from 1 to N, i is not equal to j; Respectively sum up all the one-dimensional sensing information of the i-th period into a full-period one-dimensional sensing information; and According to the full-time one-dimensional sensing information and all the i-th one-dimensional sensing information, the second-dimensional sensing information is calculated. For example, the touch processing device of item 12 of the scope of patent application, wherein the processor module is further used to execute programs to realize: According to the second-dimensional sensing information, detect whether there is a proximity event on the touch panel near the selected N first electrodes, wherein the proximity event is an event in which an external conductive object approaches or touches the touch panel , When the first electrode corresponding to the proximity event sends a driving signal for the first period of time, the second electrode corresponding to the proximity event cannot measure enough driving signals to detect the proximity event . For example, the touch processing device of item 13 of the scope of patent application, wherein when one of the first electrodes corresponding to the proximity event emits a driving signal for N-1 the first period of time, then the first electrode corresponding to the proximity event can The two electrodes measure enough drive signals to detect the proximity event. For example, the touch processing device of item 12 of the scope of patent application, wherein the processor module is used to execute Program to achieve: Repeat the steps of item 12 of the scope of patent application until all the first electrodes are selected as the detection range by the selection step. For example, the touch processing device of item 15 of the scope of patent application, wherein when the step of selecting the detection range is executed at least one k-th time, M of the first electrodes are selected, where M is a positive integer greater than 2, and M is not equal to N. For example, the touch processing device of the 16th patent application, wherein the M first electrodes selected when the step of selecting the detection range is executed for the kth time correspond to another proximity event detected in the previous time, where M is less than N. For example, the touch processing device of item 15 in the scope of patent application, wherein the processor module is further used to execute programs to realize: Obtain some second-dimensional sensing information obtained after repeating the steps of item 12 of the scope of patent application; According to the two-dimensional sensing information and the selected N first electrodes respectively corresponding to each of the two-dimensional sensing information, a full-touch panel two-dimensional sensing information corresponding to the touch panel is calculated ;as well as According to the second-dimensional sensing information of the full touch panel, it is detected whether there is a proximity event on the touch panel. For example, the touch processing device of item 12 of the scope of patent application, wherein the ith first electrode that is not selected in the i-th combination and the i+1-th unselected in the i+1th combination The first electrodes are not adjacent. For example, the touch processing device of item 12 of the scope of patent application, wherein the step of selecting N-1 first electrodes in the i-th combination is performed randomly. For example, the touch processing device of item 12 of the scope of patent application, wherein among the two-dimensional sensing information, the sensing information corresponding to the i-th first electrode corresponds to the full-time one-dimensional sensing information and a quotient A difference of the value, where the quotient is the quotient of the one-dimensional sensing information divided by (N-1) in the N-i+1th period. For example, the touch processing device of claim 12, wherein the step of simultaneously sending driving signals to the first electrodes in the i-th combination for the first period of time further includes: One of the first electrodes outside the i-th combination simultaneously sends out a second driving signal for the first period of time, wherein among the second-dimensional sensing information, corresponding to the sensing information of the i-th first electrode Corresponding to the product of (N-2)/N and a difference, the difference being the full-time one-dimensional sensing information minus the N-i+1-th one-dimensional sensing information, wherein the second driving signal It is the inverted signal of the drive signal. A touch system includes the touch panel and the touch processing device as one of items 12 to 22 in the scope of patent application.

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