Method and device for maintaining data of drive circuit

A driving circuit and data technology, applied in the direction of cathode ray tube indicators, static indicators, instruments, etc., can solve the problems of high cost and cumbersome implementation, and achieve the effects of saving costs, realizing data recovery, and simplifying the verification process

Active Publication Date: 2011-06-22
SHANGHAI TIANMA MICRO ELECTRONICS CO LTD
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0005] The problem solved by the present invention is to provide a data maintenance method and device for a drive circuit, which overcomes the

Method used

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  • Method and device for maintaining data of drive circuit
  • Method and device for maintaining data of drive circuit
  • Method and device for maintaining data of drive circuit

Examples

Experimental program
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Example Embodiment

[0036] The driving circuit has a source memory for storing original data, as well as a reset signal terminal, a power terminal, a ground terminal, and other control information terminals. The ESD current easily enters the driving circuit through these signal terminals, thereby changing the original data stored in the source memory.

[0037] The embodiment of the present invention backs up the original data of the source memory, and periodically verifies the changes of the original data and the backup data, so that when the data changes, the changed data can be repaired through the unchanged backup data or the original data.

[0038] Such as figure 1 As shown, an embodiment of the present invention provides a method for maintaining data of a drive circuit, including: step S1, copying the original data of the source memory to at least one backup memory; step S2, generating a correction corresponding to the original data of the source memory Verification code; Step S3, read the data o...

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PUM

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Abstract

The invention provides a method and device for maintaining data of a drive circuit. The drive circuit comprises a source memory for storing original data. The method comprises the following steps: duplicating the original data in the source memory to at least one backup memory; generating check codes corresponding to the original data in the source memory; periodically reading the data in the source memory and the data the backup memories and checking the data respectively with the check codes to verify whether the data in the source memory and the data in the backup memories change; and whenthe data stored in the source memory changes, duplicating the unchanged data stored in the backup memories to the corresponding positions of the source memory, and when the data stored in the backup memories change, duplicating the unchanged data stored in the source memory to the corresponding positions of the backup memories. According to the technical scheme adopted by the invention, the problem that destroying of the information in the memories caused by ESD (electrostatic discharge) leads to failure of the circuit to work normally can be effectively solved.

Description

technical field [0001] The invention relates to a data maintenance method and device for a driving circuit. Background technique [0002] From the perspective of the structure of a liquid crystal display (LCD), the liquid crystal material of the liquid crystal display is surrounded by a control circuit and a driving circuit. Wherein, the driving circuit includes a large amount of memory for storing key information related to the display. However, the driving circuit is often disturbed by Electrostatic Discharge (ESD), which causes the driving circuit to be damaged and the display to appear abnormal. [0003] The Chinese patent application number 200520067314.X discloses a liquid crystal display module with electrostatic protection function, including a liquid crystal display driving circuit for driving the liquid crystal display module, a frame for inlaying the liquid crystal display modules together, and a frame It is connected to the ground wire of the working power supp...

Claims

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Application Information

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IPC IPC(8): G09G3/36G09G5/00
Inventor 任虎男李少华
Owner SHANGHAI TIANMA MICRO ELECTRONICS CO LTD
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