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Signal screening method of touch device

A screening method and touch signal technology, which is applied in the field of signal screening, can solve problems such as abnormal sensing signals, power waste, and misjudgment of electronic devices by capacitive touch devices, so as to improve accuracy and stability, and improve power saving , the effect of improving usability

Active Publication Date: 2011-08-31
HTC CORP
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  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

Therefore, the capacitive touch device will generate abnormal sensing signals (noise), which will cause misjudgment of the electronic device and cause waste of power

Method used

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  • Signal screening method of touch device
  • Signal screening method of touch device

Examples

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no. 1 example

[0032] Utilizing the above method of judging noise, this embodiment can summarize a signal screening method for touch devices, which is used to remove touch signals (noise) generated by radio frequency interference sources or environmental factors, especially suitable for capacitive devices. The touch device includes a plurality of sensing areas. Please refer to figure 1 , figure 1 It is a flowchart of a signal screening method according to the first embodiment of the present invention. First, a touch signal is obtained, the touch signal corresponds to at least one sensing area (step S110), wherein the touch device is such as a touch panel, a touch pad or a touch module, and each touch device includes a plurality of The sensing area is used to sense the touch of fingers or conductive objects.

[0033] Then, according to the touch signal, select three consecutive adjacent sensing areas (respectively referred to as a first sensing area, a second sensing area and a third sensi...

no. 2 example

[0044] In addition, in another embodiment of the present invention, if the sensing area corresponding to the touch signal is partially located at a diagonal, it is also regarded as noise. image 3 It is a flowchart of a signal screening method according to the second embodiment of the present invention. First, a touch signal is obtained, and the touch signal corresponds to at least one sensing area (step S310); then, a first sensing area, a second sensing area, and a third sensing area that are consecutively adjacent are selected according to the touch signal and a fourth sensing area, wherein the first sensing area is diagonally adjacent to the third sensing area, and the second sensing area is diagonally adjacent to the fourth sensing area (step S320); if the touch signal If the corresponding sensing area includes the first sensing area and the third sensing area but does not include the second sensing area and the fourth sensing area, then the above touch signal is removed....

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Abstract

The invention discloses a signal screening method of a touch device. The method comprises the following steps: judging whether a touch signal output by the touch device is noise by using distribution pattern of an induction area; and if a part of the induction area corresponding to the touch signal is in accordance with noise distribution pattern, removing the touch signal. The method removes noises by comparing the touch signal and various noise distribution patterns so as to improve the accuracy and the stability of the operation of a capacitance touch device.

Description

technical field [0001] The present invention relates to a signal screening method, and in particular to a signal screening method of a touch device. Background technique [0002] The development of information technology has brought more and more convenient products and life to modern people. For example, information products such as mobile phones, computers and personal mobile assistants can be seen everywhere. Information products have an inseparable relationship with daily life. In order to make these portable information products have a more user-friendly interface, it has become a trend to integrate a touch screen panel or a touch pad. [0003] Currently, the most commonly used touch devices are mainly divided into resistive and capacitive. The main working principle of the capacitive touch device is to sense an electrical characteristic called capacitance. When two layers of electrically conductive objects approach each other without touching, their electric fields in...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F3/044
Inventor 陈锡坤吴国祯林俊伟黄明三
Owner HTC CORP
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