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Anti-interference method and device for detection of touch screen, touch sensor and touch terminal

A technology of touch screen detection and anti-interference device, which is applied in the field of anti-interference of touch sensor, touch terminal and touch screen detection, which can solve problems such as failure, jumping point, slow response of touch screen, etc., and achieve the effect of eliminating the interference of detection

Active Publication Date: 2015-07-29
GUANGDONG OPPO MOBILE TELECOMM CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention provides an anti-interference method and device for touch screen detection, a touch sensor, and a touch terminal, so as to eliminate the interference problem of charging on touch screen detection, and solve the problems of slow response, jumping points, and malfunction of the touch screen when it is in a charging state

Method used

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  • Anti-interference method and device for detection of touch screen, touch sensor and touch terminal
  • Anti-interference method and device for detection of touch screen, touch sensor and touch terminal
  • Anti-interference method and device for detection of touch screen, touch sensor and touch terminal

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Embodiment 1

[0035] figure 1 It is a flow chart of an anti-jamming method for touch screen detection provided in Embodiment 1 of the present invention. The method can be executed by an anti-jamming device for touch screen detection, and the anti-jamming device for touch screen detection can be implemented in the form of software or hardware , and generally can be integrated in a touch controller of a touch sensor, or integrated in a touch terminal (touch mobile phone, tablet computer, etc.). The method of the embodiment of the present invention specifically includes the following steps:

[0036] Step 110, judging whether the touch terminal enters the charging state;

[0037] This step can be realized through the cooperation of the main control chip of the touch terminal and the anti-interference device detected by the touch screen of the touch terminal. After the touch terminal is connected to the charger, the charger charges the battery of the touch terminal through the power supply. Th...

Embodiment 2

[0049] figure 2 It is a flow chart of an anti-interference method for touch screen detection provided by Embodiment 2 of the present invention. This embodiment is an optimization based on the above-mentioned embodiment 1. Correspondingly, the method of this embodiment includes the following steps:

[0050] Step 210, judging whether the touch terminal enters the charging state;

[0051] When the touch terminal enters the charging state, execute step 220; otherwise, end this process and continue to execute other programs of the touch terminal host.

[0052] Step 220, after judging that the touch terminal enters the charging state, setting the sensitivity value of the touch screen of the touch terminal as a second preset value;

[0053] Wherein, the second preset value is smaller than the sensitivity value of the touch screen when the touch terminal is in an uncharged state. The sensitivity value of the touch screen reflects the sensitivity of the touch screen to the touch si...

Embodiment 3

[0063] image 3 It is a schematic structural diagram of an anti-jamming device for touch screen detection provided by Embodiment 3 of the present invention. Such as image 3 As shown, the device includes: a charging state judging unit 31 , a touch signal detecting unit 32 , and an interference signal filtering unit 33 .

[0064] Wherein, the charging state judging unit 31 is used to judge whether the touch terminal enters the charging state;

[0065] The touch signal detection unit 32 is configured to detect whether there is a touch signal acting on the touch screen of the touch terminal when the touch terminal enters the charging state;

[0066] The interference signal filtering unit 33 is configured to determine whether the touch area of ​​the touch signal is smaller than a first preset value when a touch signal is detected, and if so, determine the touch signal as an interference signal and give up processing the touch signal. Touch signal.

[0067] The embodiment of th...

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Abstract

The invention discloses an anti-interference method and a device for detection of a touch screen, a touch sensor and a touch terminal. The method comprises the following steps of judging whether the touch terminal enters a charging state or not; when the touch terminal enters the charging state, detecting whether a touch signal which acts on the touch screen of the touch terminal exists or not; when the touch signal is detected, judging whether the touch area of the touch signal is smaller than a first presetting value or not; when the touch area of the touch signal is smaller than the first presetting value, judging the touch signal as an interference signal, and giving up to process the touch signal. The device comprises a charging state judging unit, a touch signal detection unit and an interference signal filtering unit. The method and the device have the advantages that the problems of slow reaction, point jumping and failure of the touch screen in the charging state are solved, and the interference of electric charging on the detection of the touch screen is eliminated.

Description

technical field [0001] Embodiments of the present invention relate to the technical field of touch sensors, and in particular, to an anti-interference method and device for touch screen detection, a touch sensor, and a touch terminal. Background technique [0002] With the development of touch screen technology, capacitive touch screens are widely used in portable devices such as mobile phones and tablet computers. These portable devices need to be charged frequently due to limited battery capacity, and the charging time is usually more than 1 hour, so users often charge while charging. Use a capacitive touch screen. In fact, the capacitive touch screen is essentially a capacitance measurement system, in which the capacitance measurement is mainly measured in the way of sending signals-receiving signals, so the common mode noise on the charger is likely to occur when the user uses the touch screen. The signal is transmitted to the input terminal of the touch screen and inte...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/041G06F3/044
Inventor 张强
Owner GUANGDONG OPPO MOBILE TELECOMM CORP LTD
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