Method for reading, writing and erasing data of liquid crystal television Flash chip

A liquid crystal TV, data reading technology, applied in the direction of electrical digital data processing, color TV parts, TV system parts, etc., can solve the problem of unstable data in the system, affecting the service life of the TV, loss, etc. To achieve the effect of ensuring safety, reducing the number of erasures and improving the service life

Inactive Publication Date: 2012-07-11
XIAMEN OVERSEAS CHINESE ELECTRONICS ENTERPRISE
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AI Technical Summary

Problems solved by technology

On the other hand, abnormal data will lead to system instability and data loss, and directly affect the service life of the TV, so it is necessary to adopt better methods to ensure data security

Method used

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  • Method for reading, writing and erasing data of liquid crystal television Flash chip
  • Method for reading, writing and erasing data of liquid crystal television Flash chip
  • Method for reading, writing and erasing data of liquid crystal television Flash chip

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Embodiment Construction

[0038] Embodiment, referring to the accompanying drawings, the data reading, writing and erasing method of a kind of liquid crystal television Flash chip of the present invention is to set at least one the first for storing data in the Flash chip of liquid crystal television A data storage area is BLOCK A and a second data storage area corresponding to the number of the first data storage area and used for backing up data is set, namely BLOCK B, such as figure 1As shown, the first data storage area is the data area, and the second data storage area is the backup area; and the first data storage area and the second data storage area are respectively divided into 16 sectors whose serial numbers are 0 to 15, Use sector 0 to store the address index, use sectors 1 to 15 to store data, and on this basis, read, write and erase data on the Flash chip;

[0039] Among them, during the data reading process, such as figure 2 shown, including the following steps:

[0040] a1. Before rea...

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Abstract

The invention discloses a method for reading, writing and erasing data of a liquid crystal television Flash chip. A data storage space is established on the Flash chip, at least one first data storage area for storing data and second data storage areas with the number corresponding to that of the first data storage areas and for backing up the data are arranged, the first data storage areas and the second data storage areas are respectively divided into 16 sections with sequence number from 0 to 15, the 0 section is used for storing address indexes, and the sections from 1 to 15 are used for storing the data so as to perform data reading, writing and erasing on the Flash chip. The method uses the 0 section as the address indexes for directing to the current section performing reading or writing operation, the data in the data storage areas are erased uniformly after 15-time writing operation is conducted on the Flash chip, data erasing times can be reduced, and equivalently service life of the Flash chip is prolonged. Simultaneously, the area providing a data backup function guarantees safety of the data, avoids data loss and system crash, and achieves the purpose of guaranteeing of service life of a television.

Description

technical field [0001] The invention relates to the use of an LCD TV Flash chip, in particular to a method for reading, writing and erasing data of the LCD TV Flash chip. Background technique [0002] Nowadays, in many consumer electronic products, because the products need to implement more and more functions, the program code becomes very large, and it is no longer possible to add an external EEPROM (serial memory) to a CPU with its own internal storage space like in the early days. Various functions can be controlled. Existing schemes usually adopt the application mode of MCU+RAM+Flash+EEPROM. For example, the existing LCD TV adopts this design scheme. Its basic feature is to use EEPROM chip to store data, and use At the same time, the program in the Flash and the data in the EEPROM are read out and stored in the SRAM, thereby realizing various functions of the machine. [0003] In the general design scheme, the space of Flash is relatively large, except for the program...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/44G06F13/16
Inventor 王为林黄骥陈迎锋
Owner XIAMEN OVERSEAS CHINESE ELECTRONICS ENTERPRISE
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