TWI459251B - Sensing system and signal processing method for the same - Google Patents

Description

Sensing system and signal processing method for the same

The present invention relates to a sensing system and a signal processing method for the same, and more particularly to a touch sensing system and a signal processing method for the touch sensing system.

With the advancement of digital technology, various information processing devices are booming at an alarming rate. Under the wave of digital information, due to the high convenience, touch panels have been widely used as input devices for digital electronic devices. Touch panels can be seen everywhere from PDAs, mobile phones to laptops, and even industrial PCs.

Please refer to the first figure (A), which is a schematic diagram of a conventional touch panel. The touch panel 10 disclosed in the first figure (A) is mainly composed of elements such as a lower conductive layer 11, an upper conductive layer 12, a double-sided tape 13, and a spacer 14, wherein the lower conductive layer 11 is usually The surface is coated with a substrate 11b of a light-transmitting conductive material 11a such as ITO, FTO, ATO or carbon ink, the substrate 11b is PC or glass, and the upper conductive layer 12 is coated with indium tin oxide on the surface ( Polyethylene terephthalate of light-transmitting conductive material 12a such as ITO), Fluorine Tin Oxide (FTO), Antimony Tin Oxide (ATO) or Carbonate (Carbonate) PET) substrate 12b.

A spacer 14 is further disposed between the upper conductive layer 12 and the lower conductive layer 11 to separate the two, so that the lower conductive layer 11 and the upper conductive layer 12 are self-conductive, and the upper conductive layer 12 and the lower conductive layer 11 pass through both sides. The surface of the upper conductive layer 12 has a pressing surface S. The user presses the pressing surface S to make the lower conductive layer 11 and the upper conductive layer 12 are in contact with each other, and the touch panel 10 can detect the pressing position. A control signal is generated, and an output circuit 15 is connected to the side surfaces of the upper conductive layer 12 and the lower conductive layer 11 for outputting a control signal.

Please continue to refer to the first figure (B), which is the working principle of the conventional resistive touch panel. Figure. The touch panel 10 is provided with a plurality of electrodes 13X, 13Y around the lower conductive layer 11, electrodes 13X and 13X on the opposite sides, or electrodes 13Y and 13Y are parallel to each other, and electrodes 13X on the adjacent sides. The electrode 13Y and the electrode 13Y are perpendicular to each other, and a pair of mutually parallel opposite electrodes 13X and the electrode 13X together form a circuit X, and another set of mutually parallel opposing voltage dividing electrodes 13Y and 13Y form a circuit Y.

In the first step, the 5 voltage is input from the E1 and E3 points, and a 5V voltage drop is formed between the circuits X. The circuit Y is used to sense the voltage drop in the X direction of the touch point, and then converted into a digital signal. The signal is obtained by the touch point in the X direction coordinate, then the 5 Voltage voltage is input from the E1 and E2 points, and a 5V voltage drop is formed between the circuits Y, and the circuit X is used to sense the voltage drop of the touch point in the Y direction. The analog signal is converted into a digital signal to obtain a coordinate of the touch point in the Y direction, and thus alternately alternates, at any operating frequency of about 150 Hz per second, when any point on the touch surface S of the touch panel 10 is touched When touched, a voltage signal can be generated by the conduction between the lower conductive layer 11 and the upper conductive layer 12, and outputted through the signal output line L, and the voltage value in the X and Y directions can be calculated by calculating the voltage value of the touch point in the X direction. The coordinates of the touch point.

However, the conventional resistive touch panel described above is analogous to the way in which the voltage is detected. Therefore, only the touch point coordinates of a single point can be detected. For a multi-point touch of two or more points, no The reaction of the reading action is to generate a reaction to read an intermediate value that does not reach the actual value. However, in most cases, the above-described operation mode capable of receiving only a single point is not convenient for the user.

As a result of the job, the applicant has conceived the "sensing system and the signal processing method for the sensing system" in the light of the trials and research and the spirit of perseverance in view of the various defects in the prior art. To overcome the above shortcomings, the following is a brief description of the case.

In view of the fact that the touch panel of the prior art generally cannot accept more than one touch input at the same time, the present invention proposes a sensing device that allows one or more touch inputs to be accepted at the same time, the one touch input including an x direction. With the coordinate value of the y direction, the multi-point perception effect is achieved.

Therefore, according to a first aspect of the present invention, a sensing system is provided, comprising: a plurality of input areas, each of the input areas for receiving an input and generating a corresponding input signal; and a processing device coupled to each of the input areas Coupled and executed a processing criterion to determine the manner in which the received input signal is processed, and continue to execute more criteria.

Preferably, the sensing system provided by the present invention, wherein the processing device is further configured to distinguish the input signals from different input areas.

Preferably, the sensing system provided by the present invention further includes a first layer having a first conductive layer; and a second layer having a second conductive layer, wherein the second conductive layer faces the The first conductive layer is disposed. The second conductive layer has a plurality of conductive regions, and the conductive regions are electrically insulated from each other, and at least one of the conductive regions has a signal transmission line.

Preferably, the sensing system provided by the present invention, wherein the input is a touch input.

Preferably, the sensing system provided by the present invention, wherein the input signal is a voltage signal.

Preferably, the sensing system provided by the present invention further includes a multiplexer having a plurality of input terminals, a selection terminal and an output terminal, the multiplexer respectively translating the inputs through the input terminals The area is electrically coupled to receive the input signals, and receives a selection signal through the selection terminal to selectively output an analog signal.

Preferably, the sensing system provided by the present invention further includes an analog-to-digital converter that is electrically coupled to the multiplexer through the output to receive the analog signal and convert the analog signal into A digital signal.

Preferably, the sensing system provided by the present invention further includes a microcontroller electrically coupled to the analog-to-digital converter and executing the processing criterion to determine the processing connection. In the manner of receiving the input signal, the digital signal is processed in the first manner when the processing criterion is positive, and the digital signal is processed in the second manner when the determination is negative.

Preferably, the sensing system provided by the present invention further includes a host end electrically coupled to the multiplexer through the selection end and electrically coupled to the analog digital converter, the electronic operation The device is configured to generate the selection signal.

Preferably, the sensing system provided by the present invention, wherein the number of the input terminals may be more than, equal to or less than the number of the input areas.

Preferably, the sensing system provided by the present invention, wherein the input areas are identical to each other, different from each other, partially identical or partially different.

Preferably, the sensing system provided by the present invention is a resistive touch panel.

Preferably, the sensing system provided by the present invention is a transparent touch panel, an opaque touch panel or a semi-transparent touch panel.

Therefore, in accordance with a second aspect of the present invention, a sensing system is provided that includes a plurality of input areas, each of the input areas for receiving an input and generating a corresponding input signal; and a processing device having a multiplexer and Each of the input areas is electrically coupled, and the input signal from different input areas is distinguished by the multiplexer, and a processing criterion is executed to determine the manner in which the received input signal is processed, and further criteria are continuously executed.

Therefore, in accordance with a third aspect of the present invention, a sensing system is provided that includes a plurality of input regions, each of the input regions for receiving an input and generating a corresponding one of the input signals; and a processing device having an analog-to-digital converter and The input signal is electrically coupled to the input area, and the input signal is converted into a digital signal by the analog digital converter, and a processing criterion is executed to determine a manner of processing the received input signal, and further criteria are continuously executed.

Preferably, the sensing system provided by the present invention, wherein the processing device is further configured to distinguish the input signals from different input areas.

Therefore, according to the fourth concept of the present invention, a sensing system is provided, which includes a processing device The device is electrically coupled to the plurality of input regions and receives an input signal from each of the input regions, and performs a processing criterion to determine the manner in which the received input signal is processed, and continues to execute more criteria.

Preferably, the sensing system provided by the present invention, wherein the processing device is further configured to distinguish the input signals from different input areas.

Therefore, in accordance with a fifth aspect of the present invention, a signal processing method for a sensing system having a plurality of zones is provided, the method comprising the steps of receiving an input signal; and executing a processing criterion to determine a manner of processing the received input signal, in the processing The criterion is that the received input signal is processed in a first manner when affirmative, and the received input signal is processed in a second manner when negated; and further criteria are continuously executed.

Preferably, the signal processing method provided by the present invention further includes the step of executing a determination criterion to determine whether to receive the input signal before the step of receiving an input signal, and receiving the input signal when the determination criterion is positive, The input signal is not received when negated.

Preferably, the signal processing method provided by the present invention further includes steps to distinguish the input signals.

Preferably, the signal processing method provided by the present invention, wherein the determining criterion further comprises the step of determining that an area corresponding to the input signal is an actuable area or a non-actuating area, and if the active area is the determining criterion To be sure, if it is the non-action zone, the criterion is negative.

Preferably, the signal processing method of the present invention further includes the step of: calculating a current position of the input signal at the current time and a previous position of the input signal at the previous time; calculating the current position and the previous position a distance between the positions; and determining whether the distance is less than a threshold, if the threshold is less than the threshold, the processing criterion is affirmative, and if the threshold is not less than the threshold, the processing criterion is negative.

Preferably, the signal processing method provided by the present invention, wherein the first mode is to draw a straight line between the current position and the previous position.

Preferably, the signal processing method provided by the present invention, wherein the second mode is to respectively perform a function corresponding to the current location and the location of the previous location.

Preferably, the signal processing method provided by the present invention is capable of dividing a plurality of input areas on the pressing surface of the sensing device, each input area being independent of each other, and each input area can be independently pressed and recognized.

Preferably, the signal processing method provided by the present invention can independently control different input areas, thereby achieving the function of multi-touch.

Preferably, the signal processing method provided by the present invention can designate the divided input areas as the movable area and the non-actuating area, and cooperate with the movable area and the non-actuating area, thereby generating a new area actuation manner. .

Preferably, the signal processing method provided by the present invention is matched with more predetermined criteria, and can handle the action of automatically connecting across regions, so that the independent input areas can be combined or connected, and the originally separated input areas become one whole. The surface of the resistive touch panel makes the touch behavior similar to that of the general touch panel.

Preferably, the signal processing method provided by the present invention can flexibly match the layout mode of the multi-input area, and can dynamically specify the operable area according to different terminal applications.

The present invention will be fully understood by the following examples, so that those skilled in the art can do so. However, the implementation of the present invention may not be limited by the following embodiments.

Please refer to the second figure, which is a schematic diagram of the composition of the sensing system of the present invention. The sensing system 20 disclosed in the present disclosure is mainly composed of a sensing device 21 and a processing device 22, wherein the processing device 22 further includes an intermediate circuit 23 and a host terminal 24, and the sensing device 20 and the intermediate circuit 23 are electrically connected to each other. The intermediate circuit 23 and the host terminal 24 are electrically connected to each other. Pick up. The sensing device 21, the mediation circuit 23, the host terminal 24, and the signal processing method used in the mediation circuit 23 and the host terminal 24 are disclosed in detail below.

■Sense device

Please refer to the third figure (A) and the third figure (B), which are respectively a cross-sectional side view of the basic structure of the sensing device and a transparent top view of the upper and lower substrates. In the third diagram (A), the sensing device 21 mainly includes an upper substrate 31, a lower substrate 32, and a plurality of spacers 33, and the lower substrate 32 has a first conductive layer 34 thereon.

Referring to the third figure (B), which is the same as the configuration of the first figure (B), the circuit X and the two electrodes 322 and 322 formed by the two electrodes 321, 321' are respectively disposed around the first conductive layer 34. The circuit Y formed by the pair of circuits X and Y can be used to form a voltage drop of 5 V and a voltage for detecting a pressing point, respectively.

Please refer to the third figure (A), the second conductive layer 311 is disposed on the side of the upper substrate 31 facing the first conductive layer 34, and the conductive material is applied on the second conductive layer 311 by partitioning the conductive material thereon. The plurality of conductive regions, such as the conductive regions A1 and A2, are electrically insulated from each other by means of zone coating. The function of the plurality of spacers 33 is the same as that of the prior art, and is disposed between the first conductive layer 34 and the second conductive layer 311 to prevent a short circuit caused by the sensing device from being touched, thereby causing a malfunction.

Since the second conductive layer 311 of the upper substrate 31 is divided into a plurality of conductive regions electrically insulated from each other as needed, and wherein at least one conductive region has an external signal line (not shown), when When at least two points on the sensing device 21 are simultaneously touched, the second conductive layer 311 is electrically connected to the first conductive layer 34 by at least two conductive regions, and the circuit X and the circuit Y are electrically Each conductive area of the sexual conduction provides a voltage value, and each of the voltage values is detected through the external signal lines, and it can be determined and detected which points or regions on the sensing device 21 are simultaneously touched, thereby achieving multi-point sensing. effect.

It should be noted that the foregoing "at least one conductive region in the plurality of conductive regions has one The external signal line includes the case where "each of the plurality of conductive regions has an external signal line" or "only a portion of the conductive regions of the plurality of conductive regions have an external signal line". In addition, the number of external signal lines connected to each conductive area is not limited, and can be freely changed according to the requirements of the visual design.

The constituent materials in the sensing device 21 are the same as in the prior art, and the manufacturing materials of the upper substrate 31 and the lower substrate 32 include, but are not limited to, PET, polycarbonate (PC), glass, or other transparent or opaque substrate-making materials. In addition, the materials for manufacturing the first conductive layer 34 and the second conductive layer 311 include, but are not limited to, indium tin oxide (ITO), fluorine tin oxide (FTO), antimony tin oxide (Antimony Tin). Oxide, ATO), carbon ink or similar conductive material.

In this case, the method of dividing the conductive region is not limited. As shown in the upper view of the second conductive layer 41 of the fourth figure (A), the conductive region can be divided into two having different shapes, as shown in the fourth figure (A). The conductive areas A1 and A2 are shown, or as shown in the fourth figure (B), the second conductive layer 42 is divided into four conductive areas A1, A2, A3 and A4 having different shapes, of course, as the fourth. As shown in (C), the second conductive layer 43 is divided into axb conductive regions A1 to A12 having the same shape, where a = 2 and b = 6.

In addition to the above three examples, as long as the concept of the patent application scope of the present application is grasped, those skilled in the art can also divide the conductive region into eight conductive regions A1 having a radiation shape as shown in the fourth figure (D). To A8, or as shown in the fourth diagram (E), the conductive region is divided into a plurality of conductive regions A1 to A6 having different geometric shapes, each of which is in contact with the edge of the conductive layer.

Although the present invention is illustrated by the above five embodiments, in the technology of the present case, the shape and number of the conductive regions are not important, as long as the design requirements are met, for those skilled in the art, The greater the number of conductive regions, the higher the sensitivity of the analog touch panel formed.

Please refer to the fourth figure (F), which is a schematic diagram of the input area of the touch surface of the sensing system of the present invention. Taking the sensing device 21 having 12 conductive regions A1 to A12 as an example, the lower surface of the pressing surface S of the sensing device 21 is the upper substrate 31 having the second conductive layer 311, so that it will correspond to the pressing surface S of the sensing device 21, corresponding thereto. At the positions of the conductive areas A1 to A12, twelve corresponding input areas I1 to I12 are formed as shown in the fourth figure (F). The user can simultaneously touch at least two input areas of the input areas I1~I12, such as simultaneously pressing the touch points T1 and T3 on the input areas I1 and I3, and the sensing device 21 will simultaneously generate two corresponding voltage signals V1. And V3, and output through the signal output lines L1 and L3.

■Mediation circuit and host side

Please refer to FIG. 5(A), which is a schematic diagram of a first embodiment of the circuit connection of the sensing system of the present invention. The sensing system 20 disclosed in the fifth diagram (A) is mainly composed of the sensing device 21, the intermediate circuit 23 and the host terminal 24. The intermediate circuit 23 includes a multiplexer 51 and an A/D converter 52 ( Analog/Digital Converter) and a microcontroller (MCU) 53, wherein the MCU 53 serves as a carrier for firmware, in which a plurality of predetermined criteria are programmed, including judgment criteria and processing criteria, and the like.

The multiplexer 51 itself has a plurality of input terminals M1 to Mj, a selection terminal P and an output terminal Z. The multiplexer 51 is electrically connected to the signal output lines L1 to Li of the sensing device 21 through the input terminals M1 to Mj. In the example, the sensing device 21 has 12 input areas I1~I12, so the corresponding number of signal output lines L1~Li is i=12, so that the number of input terminals M1~Mj is equal to the number of input areas, so the input terminals M1~Mj The number of the input terminals M1 to Mj is not limited to the number of signal output lines L1 to Li equal to the sensing device 21, that is, i=j, and the input terminals M1 to Mj. The number may be more than, equal to, or less than the number of signal output lines L1 to Li of the sensing device 21.

The main function of the multiplexer 51 is to receive the selection signal SS from the MCU 53 through the selection terminal P, and then select the input terminal M1~Mj according to the indication of the selection signal SS. Which voltage signals V1~Vi are output to the output terminal Z, and the order of their outputs, and the selected voltage signals are sequentially output to the A/D converter 52 via the output terminal Z.

When at least one or more places on the surface of the plurality of input areas I1 to I12 of the sensing device 21 are pressed or touched, the input areas I1 and I2 of the sensing device 21 are simultaneously pressed, for example, in the sensing device 21 The upper and lower conductive layers are turned on, and the voltage signals V1 and V2 are generated, which are analog signals. The voltage signals V1 and V2 are transmitted to the input terminal M1 of the multiplexer 51 via the corresponding signal output lines L1 and L2. M2.

When the input terminals M1 and M2 of the multiplexer 51 receive the voltage signals V1 and V2 from the signal output lines L1 and L2, respectively, the multiplexer 51 determines whether the voltage signal V1 or V2 can be output according to the indication of the selection signal SS. The selection signal SS is generated by the driver of the MCU 53 or the host terminal 24. In this embodiment, the multiplexer 51 selects to output the voltage signal V1 according to the indication of the selection signal SS, so the voltage signal V1 passes through the multiplexer. The output Z of 51 is passed to the A/D converter 52.

The A/D converter 52 then converts the analog voltage signal V1 into a digital signal DS1 including a plurality of bits, such as an 8-bit digital signal, and then the digital signal DS1 according to a preset resolution. Passed to the MCU 53, the resolution of the A/D converter 52 may preferably vary from 1024 to 4096.

After processing the voltage signal V1, the multiplexer 51 continues to pass the voltage signal V2 to the A/D converter 52 via the output terminal Z, and the analog voltage signal V2 is preset by the A/D converter 52. The resolution, analog-to-digital conversion is performed to generate the digital signal DS2, and then the digital signal DS2 is transmitted to the MCU 53, and after receiving the digital signals DS1 and DS2, the MCU 53 continues processing according to the predetermined criteria programmed in the MCU 53. .

The intermediate circuit 23 disclosed in the fifth figure (A) includes a multiplexer 51, an A/D converter 52 and an MCU 53. If the input end Mj of the multiplexer 51, the number of inputs is j=12, which means that the intermediate circuit 23 in the fifth figure (A) can only be matched with at most 12 The sensing means 21 of the input areas I1 to I12, when the number of input areas of the sensing means 21 exceeds 12, only the intermediate circuit 23 of one multiplexer 51 will not be compatible with the sensing means 21.

Therefore, please refer to FIG. 5(B), which is a schematic diagram of the intermediate circuit of the present invention. The intermediate circuit 23 of the fifth diagram (B) is provided with a plurality of multiplexers 51, each multiplexer 51 is further configured with an A/D converter 52, and the MCU 53 of the fifth diagram (B) has 12 inputs 埠(port) k1~k12, so it can receive signals from up to 12 multiplexers 51, so the intermediate circuit 23 in the fifth diagram (B) will be able to process up to j × k = 12 × 12 = 144 from the perception The input signal of the device 21, that is, the sensing device 21 having 144 input areas.

However, since the intermediate circuit 23 in the fifth diagram (B) has only four multiplexers 51, each multiplexer 51 has 12 inputs, and the MCU 53 has 12 input ports, but since there are only four multiplexers 51, The mediation circuit 23 can only process up to j x k = 12 x 4 = 48 input signals from the sensing device 21, i.e. the mediation circuit 23 can be paired with the sensing device 21 having 48 input fields.

By analogy, as long as the MCU 53 with higher processing capability is used, the mediation circuit 23 of the present invention can be operated in conjunction with the sensing device 21 having a very high input area and thus having high resolution.

Please refer to the sixth figure, which is a schematic diagram of a second embodiment of the circuit connection of the sensing system of the present invention. Based on the reference in the first embodiment, the interposer circuit 23 is provided with the multiplexer 51, the A/D converter 52 and the MCU 53, but the present invention proposes a second type of interposer 23 which is read by a plurality of The units 611~61i replace the multiplexer 51, and the functions of the multiplexer are integrated in the MCU53, that is, the MCU 53 includes a multiplexer, and the MCU 53 can perform multiplex signal selection.

The mediation circuit 23 shown in FIG. 6 includes a plurality of reading units 611 to 61i, a plurality of A/D converters 52, and an MCU 53. Each of the signal output lines L1 to Li respectively has a reading unit 611 to 61i. That is, each of the reading units 611~61i is separately connected to each signal output line. L1~Li are electrically connected, the number of the two is the same, and each of the reading units 611~61i respectively has an A/D converter 52, that is, each A/D converter 52 and each reading unit 611~ 61i is electrically connected, and the reading units 611~61i are preferably filters, and the MCU53 is used as a firmware in which a plurality of predetermined criteria are programmed.

When at least one or more places on the surface of the plurality of input areas I1 to I12 of the sensing device 21 are pressed or touched, the input areas I1 and I2 of the sensing device 21 are simultaneously pressed, for example, in the sensing device 21 The upper and lower conductive layers are turned on, and the voltage signals V1 and V2 are generated, which are analog signals. The voltage signals V1 and V2 are transmitted to the corresponding reading units 611 and 612 via the corresponding signal output lines L1 and L2, and then the reading unit 611 and 612 continue to pass the received voltage signals V1 and V2 to the A/D converter 52. The A/D converter 52 converts the analog voltage signals V1 and V2 into a plurality of bits according to a preset resolution. The digital signals DS1 and DS2 of the bits are then transmitted to the MCU 53. After receiving the digital signals DS1 and DS2, the MCU 53 continues processing according to the predetermined criteria programmed in the MCU 53.

However, it is worth noting that in the second embodiment, since the function of the multiplexer has been incorporated into the MCU 53, that is, the multiplex selection of the digital signals DS1 and DS2 is completed in the MCU 53, so that it is disclosed in the sixth figure. In the second embodiment, the use of the multiplexer can be eliminated.

The host terminal 24 of the present invention is an electronic computing device having a central processing unit (CPU), such as a personal computer, a desktop computer, a notebook computer, a server or a workstation, and the host terminal 24 transmits the sensing device 21 through the power supply line 54. A working power source is provided to enable the sensing device 21 to generate a voltage drop in the X and Y directions as previously described. The CPU of the host terminal 24 is always resident with a driver, and can cooperate with various standards programmed in the firmware, that is, the MCU, so that the user can input an input signal to the sensing device 21 and operate the host through the control sensing device 21. End 24.

■Signal processing method

The mediation circuit 23 of the present invention cooperates with the host terminal 24 to process the voltage signals V1 to Vi from the sensing device 21 in accordance with the signal processing method described below, and achieves the function of operating the host terminal 24 through the control sensing device 21, The signal processing method is separately programmed in the firmware or in the CPU of the host terminal 24 in a driver manner.

For convenience of description, the present embodiment cooperates with the sensing system 20 disclosed in FIG. 5A and the touch pattern disclosed in the fourth (F), and has a sensing device 21 having 12 input areas I1 to I12. A multiplexer 51, an A/D converter 52 and an MCU 53, and the user presses the corresponding touch points T1 and T3 of the input areas I1 and I3 to illustrate the signal processing method of the present invention.

In step 700, the number of times the multiplexer scans each input area I1~I12 every second is set first, usually the working frequency of the multiplexer is between 150 Hz and 133 Hz per second. The implementation adopts a working frequency of 150 Hz, that is, multiplexing. The device will periodically scan each input area I1~I12 at a frequency of 150 times per second. The scanning path is I1~I6~I12~I7, and it is detected whether the voltage signal V1 is received on each input end M1~M12~ V12.

In step 701, the user simultaneously presses the touch point T1 on the input area I1, and the touch point T3 on the input area I3, according to the scan path of the multiplexer 51, the multiplexer 51 scans the voltage signal V1 first. Then, the voltage signal V3 is scanned again, so the multiplexer 51 receives the voltage signal V1 at the previous time t-1, and receives the voltage signal V3 at the current time t, that is, before and after the multiplexer 51. The voltage signals V1 and V3 are read at the time. At step 702, the multiplexer sequentially receives the voltage signals V1 and V3.

In step 703, the multiplexer 51 determines whether to accept and output the voltage signal V1 or V3 according to the selection signal SS from the host terminal before outputting the voltage signals V1 and V3, and the selection signal SS is executed by the host terminal 53. And generating, the criterion is to determine that the input area I1 or I3 corresponding to the voltage signal V1 or V3 is a movable area or a non-actuating area, and if it is an operable area, outputting a corresponding voltage signal, and continuing to the next step 704 If it is a non-active area, return to step 701 to continue scanning the input.

In step 704, the multiplexer passes the analog voltage signals V1 and V3 to the A/D converter, respectively, and the A/D converter converts the voltage signals V1 and V3 to include multiple bits according to a preset resolution. Bits digital signals DS1 and DS3, and get touch points T1 and T3 (x, y) coordinates, commonly used A / D converter resolution can be from 1024 to 4096, the higher the resolution of A / D converter Then, the resolution of the sensing device 21 is also higher, and then the A/D converter transfers the converted digital signals DS1 and DS3 including the coordinates of the touch points T1 and T3 to the MUC 53.

At step 705, the MUC 53 will at the previous time t-1 the (x, y) coordinate Ct(I1) from the touch point T1 of the input area I1, and the touch point from the input area I3 at the current time t. The (x, y) coordinate of T3, Ct-1 (I3), is compared with the processing criteria programmed in the MCU 53. The processing criterion includes calculating the touch point T1 of the previous time t-1 (x, y). a linear distance between the coordinate Ct(I1) and the (x,y) coordinate Ct-1(I3) from the touch point T3 of the input area I3 at the current time t, and confirming whether the straight line distance is smaller than a certain threshold value, If no, step 706 is performed, and if yes, step 707 is performed.

In step 706, when the linear distance is not less than the threshold value, the MCU 53 will transmit a response signal to the host terminal 24, requesting the host terminal 24 to respectively activate the setting function corresponding to the input area I1 and the input area I3. In step 707, when the linear distance is less than the threshold value, the MCU 53 will transmit a response signal to the host terminal 24, requesting the host terminal 24 to draw a straight line between the touch points T1 and T3.

According to the signal processing method described above, the sensing system of the present invention cooperates with a firmware in the host terminal or a driver resident in the CPU, and can at least have the following features or functions: (1) capable of sensing the device The pressing surface defines a plurality of input areas, each of which is independent of each other, and each input area can be independently pressed and recognized; (2) independent control of different input areas, thereby achieving multi-touch function ; (3) The designated input areas can be designated as "active zone" and "non-active zone", and the group can cooperate with the non-active zone to generate new zones. Actuation mode; (4) with more predetermined criteria, and can handle the automatic connection action across regions, so it can be combined or connected to each independent input area, the original input area becomes a full-surface resistive touch panel. The touch behavior is like the control mode of the general touch panel; (5) flexible layout with multiple input areas, which can dynamically specify the active area according to different terminal applications; and (6) in an independent Within the input area, the exact position can be calculated completely in analogy.

In summary, the present invention provides a sensing system that electrically cuts a conductive layer of an upper substrate, so that the created sensing system can accurately determine which points or regions on the same layer are simultaneously The effect of the touch can be achieved by the cost of manufacturing an analog touch panel, thereby achieving the multi-point detection effect that the digital touch panel can achieve.

It should be noted that those skilled in the art to which the present invention pertains can easily combine and derive more modified embodiments based on the foregoing first to fifth modified embodiments, and the above is only the best of the present invention. The scope of the invention is not limited by the embodiments. That is to say, the equivalent changes and modifications made by the applicant in accordance with the scope of the patent application of the present invention should still fall within the scope of the patent of the present invention. I would like to ask your review committee to give a clear explanation and pray for it.

10‧‧‧Touch panel

11‧‧‧lower conductive layer

11a‧‧‧Translucent conductive material

11b‧‧‧Substrate

12‧‧‧Upper conductive layer

13‧‧‧Double-sided adhesive

12a‧‧‧Light-transmitting conductive materials

12b‧‧‧PET substrate

14‧‧‧ spacers

S‧‧‧ pressed surface

15‧‧‧Output circuit

13X, 13Y‧‧‧ electrodes

E1, E2, E3, E4‧‧‧ voltage input points

X, Y‧‧‧ circuits

20‧‧‧ perception system

21‧‧‧ sensing device

22‧‧‧Processing device

23‧‧‧Intermediary circuit

24‧‧‧Host side

31‧‧‧Upper substrate

32‧‧‧lower substrate

33‧‧‧ spacers

34‧‧‧First conductive layer

321, 321 ', 322, 322' ‧ ‧ electrodes

41, 42, 43, 311‧‧‧ second conductive layer

A1, A2~A12‧‧‧ conductive area

I1, I2~I12‧‧‧ input area

T1, T3, T3‧‧‧ touch points

V1, V2, V3~V12‧‧‧ voltage signal

51‧‧‧Multiplexer

52‧‧‧A/D converter

53‧‧‧MCU

54‧‧‧Power supply line

M1, M2~Mj‧‧‧ input

P‧‧‧Selection

Z‧‧‧ output

L, L1, L2~Li‧‧‧ signal output lines

SS‧‧‧Select signal

DS1, DS2~DSi‧‧‧ digital signal

611, 612~61i‧‧‧ reading unit

The first figure (A) is a schematic diagram of a conventional touch panel; the first figure (B) is a schematic diagram of a working principle of a conventional resistive touch panel; and the second figure is a schematic diagram of the composition of the sensing system of the present invention; The third figure (A) is a cross-sectional side view of the basic structure of the sensing device proposed in the present invention; the third figure (B) is a transparent top view of the upper and lower substrates of the sensing device proposed in the present invention; the fourth figure (A) ~(E) is a top view of the five second conductive layers exemplified in the present invention; the fourth figure (F) is a schematic view of the input area of the touch surface of the sensing system of the present invention; the fifth figure (A) is A schematic diagram of a first embodiment of a circuit connection of the inventive sensing system; a fifth diagram (B) is a schematic diagram of the intermediate circuit of the present invention; and a sixth diagram is a schematic diagram of a second embodiment of the circuit connection of the sensing system of the present invention.

20‧‧‧ perception system

21‧‧‧ sensing device

23‧‧‧Intermediary circuit

24‧‧‧Host side

L1, L2~Li‧‧‧ signal output line

V1, V2, V3~Vi‧‧‧ voltage signal

I1, I2~I12‧‧‧ input area

M1, M2~Mj‧‧‧ input

51‧‧‧Multiplexer

52‧‧‧A/D converter

53‧‧‧MCU

54‧‧‧Power supply line

P‧‧‧Selection

Z‧‧‧ output

Claims (23)

A sensing system includes: a plurality of input areas, each of the input areas for receiving a first input at a first touch point and a second input at a second touch point at a previous time And generating a corresponding two-input signal; and a processing device, comprising: a multiplexer having a plurality of input terminals, a selection terminal and an output terminal, the multiplexer respectively translating the input regions through the input terminals Electrically coupled to receive the input signals, and receive a selection signal through the selection terminal to selectively output an analog signal; an analog-to-digital converter is electrically coupled to the multiplexer through the output terminal Receiving the analog signal and converting the analog signal into a digital signal; and a microcontroller electrically coupled to the analog digital converter for generating the selection signal, the microcontroller performing a first mode and a processing criterion of a second mode, wherein the microcontroller executes the processing criterion to calculate an absolute distance between the first touch point and the second touch point, and determines whether the absolute distance is less than one a value, when the result of the processing criterion is negative, the processing device executes the first mode to enable the first touch point and the input area corresponding to the second touch point to be an active area, when the processing criterion When the result is affirmative, the processing device performs the second mode to draw a straight line between the first touch point and the second touch point. The sensing system of claim 1, wherein the processing device is further configured to distinguish the input signals from different input areas. The sensing system of claim 1, further comprising: a first layer having a first conductive layer; and a second layer having a second conductive layer, wherein the second conductive layer Towards the first A conductive layer is disposed on the second conductive layer, and each conductive region is electrically insulated from each other, and at least one of the conductive regions has a signal transmission line. The sensing system of claim 1, wherein the input is a touch input. The sensing system of claim 1, wherein the input signal is a voltage signal. The sensing system of claim 1, further comprising: a host end electrically coupled to the microcontroller. The sensing system of claim 1, wherein the number of the inputs may be more than, equal to, or less than the number of the input areas. The sensing system of claim 1, wherein the input regions are identical in shape, different from each other, partially identical, or partially different. The sensing system described in claim 1 is a resistive touch panel. The sensing system according to claim 1 is a transparent touch panel, an opaque touch panel or a semi-transparent touch panel. A sensing system includes: a plurality of input areas, each of the input areas for receiving a first input at a first touch point and a second input at a second touch point at a previous time And generating a corresponding two-input signal; and a processing device, comprising: a multiplexer having a plurality of input terminals, a selection terminal and an output terminal, the multiplexer respectively translating the input regions through the input terminals Electrically coupled to receive the input signals, and receive a selection signal through the selection terminal to selectively output an analog signal; an analog-to-digital converter is electrically coupled to the multiplexer through the output terminal Receiving the analog signal and converting the analog signal into a digital signal; a microcontroller electrically coupled to the analog-to-digital converter for generating the selection signal, the microcontroller distinguishing the input signals from different input areas by the multiplexer, and calculating the first touch point An absolute distance from the second touch point, when the absolute distance is not less than the threshold value, the processing device enables the first touch point and the input area corresponding to the second touch point For the active area, when the absolute distance is less than a threshold, the processing device draws a straight line between the first touch point and the second touch point. A sensing system includes: a plurality of input areas, each of the input areas for receiving a first input at a first touch point and a second input at a second touch point at a previous time And generating a corresponding two-input signal; and a processing device, comprising: a multiplexer having a plurality of input terminals, a selection terminal and an output terminal, the multiplexer respectively translating the input regions through the input terminals Electrically coupled to receive the input signals, and receive a selection signal through the selection terminal to selectively output an analog signal; an analog-to-digital converter is electrically coupled to the multiplexer through the output terminal Receiving the analog signal and converting the analog signal into a digital signal; and a microcontroller electrically coupled to the analog digital converter to generate the selection signal, the microcontroller transmitting the analog digital converter Converting the input signal into a digital signal, and calculating an absolute distance between the first touch point and the second touch point, and when the absolute distance is not less than the threshold value, the processing device enables the first The touch point and the input area corresponding to the second touch point are an active area, and when the absolute distance is less than a threshold, the processing device is between the first touch point and the second touch point Draw a straight line. The sensing system of claim 12, wherein the processing device is further configured to distinguish the input signals from different input areas. A sensing system, comprising: a processing device, comprising: a multiplexer having a plurality of input terminals, a selection terminal and an output terminal, wherein the multiplexer is electrically coupled to the input regions through the input terminals Receiving the input signals and receiving a selection signal through the selection terminal to selectively output an analog signal; the analog digital converter is electrically coupled to the multiplexer through the output terminal to receive the analog signal a signal, and converting the analog signal into a digital signal; and a microcontroller electrically coupled to the analog converter for generating the selection signal, the microcontroller receiving the current time from each of the input areas a first input on a first touch point and a second input signal on a second touch point at a previous time, and calculating a first between the first touch point and the second touch point An absolute distance, when the absolute distance is not less than the threshold value, the processing device enables the first touch point and the input area corresponding to the second touch point to be an active area, when the absolute distance is less than a threshold When the value is processed Draw a line set between the first touch point and the second touch point. The sensing system of claim 14, wherein the processing device is further configured to distinguish the input signals from different input areas. A signal processing method for a sensing system with a plurality of zones, comprising the steps of: providing a first input signal at a current position at a current time and a second input signal at a previous position at a previous time; Determining a criterion to determine whether to receive the first input signal and the second input signal, and receiving the first input signal and the second input signal when the determination criterion is positive No, receiving the first input signal and the second input signal when negating; calculating an absolute distance between the current position and the previous position; performing a processing criterion including a first mode and a second mode Determining whether the absolute distance is less than a threshold; and when the result of the processing criterion is negative, performing the first mode to respectively enable the first input signal and the function corresponding to the second input signal, when the processing criterion When the result is affirmative, the second mode is executed to draw a straight line between the first touch point and the second touch point. The signal processing method described in claim 16 of the patent application further includes the steps of: distinguishing the input signals. The signal processing method of claim 16, wherein the determining criterion further comprises the steps of: determining that an area corresponding to the input signal is an actuable area or a non-actuating area, and if the active area is The criterion is affirmative, and if it is the non-action zone, the criterion is negative. The signal processing method according to claim 16, wherein the pressing surface of the sensing device can be divided into a plurality of input regions, each of which is independent of each other, and each input region can be independently pressed and recognized. For example, the signal processing method described in claim 16 of the patent application can independently control different input areas, thereby achieving a multi-touch function. For example, the signal processing method described in claim 16 can designate the divided input areas as the movable area and the non-actuating area, and the group cooperation moving area and the non-actuating area, thereby generating new area actuation. the way. For example, the signal processing method described in claim 16 of the patent application, which is combined with more predetermined criteria, can handle the action of automatically connecting across regions, thereby being able to flatten or connect independent inputs. In the area, the originally separated input areas become a whole-surface resistive touch panel, so that the touch behavior is like the control mode of the general touch panel. For example, the signal processing method described in claim 16 of the patent application can flexibly match the layout mode of the multi-input area, and can dynamically specify the operable area according to different terminal applications.