Method for improving electrostatic resistance of capacitive screen by filtering algorithm

A filtering algorithm and capacitive screen technology, applied in computing, electrical digital data processing, input/output process of data processing, etc., can solve problems such as increasing costs, and achieve the effect of improving antistatic ability

Inactive Publication Date: 2012-12-19
GUANGDONG OPPO MOBILE TELECOMM CORP LTD
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Problems solved by technology

When dealing with anti-static in the existing electronic equipment, corresponding anti-static devices are added to the electronic equipment, such as ESD (abbreviation for Electro-Static discharge in English, and electrostatic discharge in Chinese) to achieve the corresponding protection of capacitive devices in electronic...

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  • Method for improving electrostatic resistance of capacitive screen by filtering algorithm
  • Method for improving electrostatic resistance of capacitive screen by filtering algorithm

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Embodiment Construction

[0028] The following will describe in detail with reference to the accompanying drawings in conjunction with the embodiments, so as to further explain the technical features and advantages of the present invention.

[0029] The principle block diagram of the present invention is as figure 2 As shown, a method for improving the antistatic performance of a capacitive screen by using a filtering algorithm, the capacitive screen is a capacitive touch screen, the capacitive touch screen is arranged on an electronic device, and the electronic device is provided with an antistatic processing circuit, and the circuit It includes a main chip and a touch screen control IC module connected to the main chip.

[0030] The function of the main chip is the data processing center of the entire electronic device; the function of the touch screen control IC is to detect the change of capacitance at each point on the touch screen and convert it into a digital quantity; The variation of capacit...

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Abstract

Disclosed is a method for improving electrostatic resistance of a capacitive screen by filtering algorithm. The capacitive touch screen is disposed on an electronic device. The method includes the steps: firstly, setting an upper limit number X of interrupt pulse times which are reported to a capacitive touch screen control IC (integrated circuit) module by the capacitive touch screen in unit time; secondly, allowing the capacitive touch screen control IC module to cyclically detect in real time the interrupt pulse times Y reported by the capacitive touch screen in unit time; thirdly, comparing X to Y, returning to the step 2 if X is larger than Y, allowing the capacitive touch screen control IC transmits data to a master chip for processing, and executing the step 4 if X is not larger than Y; fourthly, filtering to remove all the data transmitted in the step 3 before reporting to the master chip. The mass abnormal data generated by the capacitive touch screen are removed by filtering when the capacitive touch screen generates static electricity, so that the electrostatic resistance of the capacitive touch screen of the started electronic device is improved and false triggering caused by static jamming is avoided.

Description

technical field [0001] The invention relates to an antistatic technology of a capacitive touch screen, in particular to a method for improving the antistatic performance of a capacitive screen by using a filtering algorithm. Background technique [0002] In the prior art, electronic equipment with a capacitive touch screen corresponds to improving the antistatic ability of the capacitive touch screen; the current antistatic ability of a single capacitive touch screen can reach 15KV or above, but once installed in an electronic device, Especially if the side of the electronic device with the capacitive touch screen is buckled on the desktop or other objects, its antistatic ability will be doubled. [0003] The general characteristics of the influence of electrostatic discharge on the capacitive touch screen. After the static electricity hits the capacitive touch screen, it will cause the capacitive touch screen to generate a large area of ​​data abnormality. At this time, thr...

Claims

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Application Information

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IPC IPC(8): G06F3/044
Inventor 袁幸伟
Owner GUANGDONG OPPO MOBILE TELECOMM CORP LTD
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