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Scanning method for touch panel

A touch panel and scanning method technology, applied in the input/output process of data processing, instruments, electrical digital data processing, etc. Improve execution efficiency, reduce scan time and power consumption

Inactive Publication Date: 2009-12-30
CPTF VISUAL DISPLAY (FUZHOU) LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the above-mentioned scanning method scans all sensing areas, if the number of sensing areas is too large, the scanning time of the touch panel will be prolonged and the amount of computation will increase, resulting in a significant decrease in execution efficiency.

Method used

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  • Scanning method for touch panel
  • Scanning method for touch panel
  • Scanning method for touch panel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0032] figure 1 It is a flowchart of a scanning method for a touch panel according to an embodiment of the present invention. Please refer to figure 1 , in this embodiment, the touch panel is, for example, a projected capacitive (Projected Capacitive) touch panel, the touch panel has a plurality of sensing areas, and each sensing area has a sensing element for touch Sensing, wherein the sensing component can be composed of a sensor or a circuit structure with a sensing function. In this scanning method, firstly, all sensing areas on the touch panel are scanned to detect whether any sensing areas are touched (step S101), wherein the touches include approaching and touching The condition of the sensing area. When the sensing area is touched, a touch signal will be generated; otherwise, no touch signal will be generated. Accordingly, it can be determined whether all the sensing areas are touched according to whether the sensing areas generate touch signals (step S102 ), so as...

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Abstract

The invention relates to a scanning method for a touch panel, in particular to a scanning method capable of adjusting a dynamic area of a scanning area according to a touch signal. The method comprises the following steps: firstly, defining the scanning area according to coordinates corresponding to the detected touch signal; then, scanning the scanning area in a preset period to detect a next touch signal; and after the preset period, scanning a sensing range of the touch panel to redefine the scanning area. Because the scanning area is smaller than the sensing range of the whole touch panel, the scanning method can reduce the scanning time and power consumption by using the scanning area to detect the next touch signal.

Description

technical field [0001] The invention relates to a scanning method of a touch panel, in particular to a dynamic area scanning method capable of adjusting a scanning area according to a touch signal. Background technique [0002] With the rapid development of technology, most electronic devices, such as notebook computers, mobile phones or portable multimedia players, are usually equipped with touch panels to replace traditional keyboards as a new generation of input interfaces. Touch panels can be roughly classified into resistive, capacitive, infrared, and ultrasonic, among which resistive touch panels and capacitive touch panels are the most common products. [0003] In the capacitive touch panel, the capacitance value of the touch panel changes when fingers or conductive materials approach or touch the touch panel. When the touch panel detects the change of the capacitance value, it can determine the position where the finger or the conductive material approaches or touch...

Claims

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Application Information

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IPC IPC(8): G06F3/041
Inventor 谢明达林建铭陈智崇殷雪芳刘家麟莫启能
Owner CPTF VISUAL DISPLAY (FUZHOU) LTD
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