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Detection method and device for detecting multiple touch points on touch panel

A technology of a touch panel and a detection method, applied in the input/output process of data processing, instruments, electrical digital data processing, etc.

Inactive Publication Date: 2012-05-16
RAYDIUM SEMICON
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] exist figure 1 Among them, the existing detection circuit 200 can completely detect the touch events on the touch panel 100 after a lot of setting and frequent reading. For example, if the detection circuit 200 targets all the touch events on the touch panel 100 Scanning the area to obtain the coordinates of each touch point therein requires at least 8*8*2=128 read times for setting the register 211 and the control interface 240

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  • Detection method and device for detecting multiple touch points on touch panel
  • Detection method and device for detecting multiple touch points on touch panel
  • Detection method and device for detecting multiple touch points on touch panel

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Embodiment Construction

[0017] Please refer to image 3 , which is a schematic diagram of a detection device 300 applied to a touch panel implemented according to an embodiment of the present invention. The touch panel includes a plurality of first sensing axes in a first dimension (for example: X-axis), and includes a plurality of second sensing axes in a second dimension (for example: Y-axis). For example, the detection device 300 apply to figure 2 The touch panel 100 is shown to detect touch points thereon, wherein the touch panel 100 has first sensing axes X1 - X8 and second sensing axes Y1 - Y8 . In this embodiment, the detection device 300 includes (but not limited to) a multiplexer 310, a digital-to-analog converter 320, a storage element (such as a memory) 330, a control interface 340, a drive circuit 350, a preliminary detection circuit 360, and a sensing axis Selection circuit 370, setting circuit 380 and decision circuit 390, wherein multiplexer 310 (including register 311 therein), dig...

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Abstract

The invention provides a detection method and a device for detecting multiple touch points on a touch panel. The touch panel comprises a plurality of first induction axes in a first dimension and a plurality of second induction axes in a second dimension. The detection method comprises the following steps: determining the plurality of first specific induction axes and the plurality of second specific induction axes according to primary sensed data; setting the driving and receiving sequences of the first induction axes and the second induction axes to generate first sensed data and second sensed data; and when a finishing instruction is received, determining touch points according to the first sensed data and the second sensed data. Through adoption of the detection method and the detection device, the efficiency of detection of the touch panel can be improved, and setting and reading frequencies required in a detection process can be reduced.

Description

technical field [0001] The invention relates to a detection method of a touch point, in particular to a detection method and a detection device for detecting multiple touch points on a touch panel. Background technique [0002] In a general mutual capacitance (mutual capacitance) touch panel, there are usually two commonly used detection methods. The first detection method is to drive all the sensors on the first dimension (for example: X-axis) on the touch panel one by one. axis (sensing axis), and each sensing axis on the second dimension (for example: Y axis) receives the sensing signal corresponding to each sensing axis on the X axis one by one, and then drives each sensing axis on the Y axis one by one, and Each sensing axis on the X-axis receives sensing signals corresponding to each sensing axis on the Y-axis one by one. For example, see figure 1 , figure 1 It is a schematic diagram of using the existing detection circuit 200 to detect multiple touch points on the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/041G06F3/044
Inventor 吴东格周世宗张仕勤
Owner RAYDIUM SEMICON
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