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A kind of nand FLASH data storage method

A data storage and data technology, applied in the field of avionics, can solve the problems of high maintenance cost, long query time, inconvenient NANDFLASH data storage, etc., to achieve the effect of easy recovery and improved download speed

Active Publication Date: 2019-03-01
SHAANXI QIANSHAN AVIONICS
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  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0003] The present invention overcomes the deficiencies of the prior art, and proposes a NAND FLASH data storage method, which solves the problems of inconvenient flight accident handling and daily maintenance, long query time and high maintenance cost of NAND FLASH data storage in the field of avionics

Method used

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  • A kind of nand FLASH data storage method
  • A kind of nand FLASH data storage method
  • A kind of nand FLASH data storage method

Examples

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Embodiment Construction

[0034] The present invention will be further described in detail below in conjunction with examples, but the embodiments of the present invention are not limited thereto.

[0035] Such as figure 1 As shown, first, according to the feature that the minimum erasing unit of NAND FLASH is a block, and a block is composed of pages, the data is stored in a sequential manner. When the storage capacity reaches the last block of data capacity, the first block is automatically erased. At the same time, when data is stored, each data is composed of several data blocks, such as figure 2 shown. Each data block includes a data index area and a valid data area. The data index includes offset address, data type, data block type, history information and data recording status, such as image 3 shown.

[0036] in,

[0037] Offset address: represents the starting position of valid data in a data block;

[0038] Data type: represents the type of data stored in the current data block, for exa...

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PUM

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Abstract

The invention provides a NAND FLASH data storage management method applied in the field of aviation airborne electronics. First, according to the feature that the minimum erasing unit of NAND FLASH is a block, and the block is composed of pages, the data is stored in a sequential storage mode. When the storage capacity reaches the last block of data capacity, the data stored in the first block will be automatically erased. This method can effectively solve the problem of data storage management in the field of aviation airborne equipment. The method solves the problem that the data that is not completely covered cannot be read when the data is circularly recorded, and at the same time solves the problem that the data cannot be effectively recovered and judged when the power is off, and also improves the download rate of the data history.

Description

technical field [0001] The invention belongs to the technical field of avionics, and in particular relates to a NAND FLASH data storage method. Background technique [0002] NAND FLASH Memory is an electrically erasable, read-write non-volatile memory. It has the advantages of high density, low cost, non-volatility, low power consumption, fast reading and writing and erasing speed, and is widely used in data storage of protective recorders and cache recorders in flight parameter recording systems. In the field of aviation airborne equipment, the method of sequential storage is usually adopted. At the same time, due to the requirement of automatic cycle recording, the earlier records can be automatically overwritten after the storage capacity is reached. However, in the past storage methods, the earlier data records After deletion, although the old data records are not completely covered, the remaining uncovered data cannot be viewed, resulting in inconvenience in handling f...

Claims

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Application Information

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IPC IPC(8): G06F12/06
Inventor 王勇屠晓涛
Owner SHAANXI QIANSHAN AVIONICS
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