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Storage method for NAND FLASH data

A technology of data storage and mass storage, applied in the field of avionics, can solve the problems of data loss, difficult to meet the application of mass storage in the field of aviation airborne equipment, limited response time of equipment, etc., to achieve the effect of avoiding download time

Active Publication Date: 2015-03-04
SHAANXI QIANSHAN AVIONICS
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  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

[0003] In the field of aviation airborne equipment, it is often necessary to cyclically record a set of parameters and automatically delete older records. Obviously, common data storage methods are difficult to meet the application of mass storage in the field of aviation airborne equipment.
At the same time, the power-down of airborne equipment is often unpredictable, and the response time given to the device by power-down interruption is very limited. It is difficult for traditional data storage methods to complete the power-down processing of data within a limited time (such as writing end-of-file flag, etc.), resulting in data loss

Method used

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  • Storage method for NAND FLASH data
  • Storage method for NAND FLASH data
  • Storage method for NAND FLASH data

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Embodiment Construction

[0036] The present invention will be described in further detail below in conjunction with accompanying drawing, as figure 2 , image 3 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, in the mass storage of parallel channels composed of multiple chips, the minimum management unit block is composed of a group of horizontal blocks. When only For one chip, the block is the smallest management unit; the entire data area is partitioned according to the block, the first address of each partition is basei, and the header information of the current block is recorded on the first page of each block of NAND FLASH, the header information includes The data type of current block, belonging partition, block sequence number, logical address, history, time and status word information, a kind of NAND FLASH data storage method comprises the following steps:

[0037] A: Steps to get the latest recorded location...

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Abstract

The invention belongs to the technical field of aviation electronics and particularly relates to a storage method for NAND FLASH data. According to the storage method, the problem about data storage and management in the field of aircraft airborne equipment can be effectively solved. The method supports multi-partition operation, automatic cycle record in each partition can be realized, and the characteristic of natural wear leveling is realized; power failure existing in other management methods can be effectively avoided; the function of searching according to time and specific parameters can be supported; particularly in massive data storage, transfer time of a large amount of unwanted information can be avoided, and the problem about data storage and management which generally exist in the field of the aircraft airborne equipment is effectively solved.

Description

technical field [0001] The invention belongs to the technical field of avionics, and in particular relates to a NADA FLASH data storage method. Background technique [0002] NAND FLASH Memory is a point-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, so it is widely used in mobile devices. The data storage methods currently used in NAND FLASH include FAT, JFFS, YAFFS, etc. However, due to the characteristics of NAND FLASH erasing by block and writing by page, and the life limit of NAND FLASH, these management methods require complex data structures and wear leveling algorithms to support. With the continuous increase of capacity, common algorithms are not suitable for new NAND FLASH applications. [0003] In the field of aviation airborne equipment, it is often necessary to record a set of parameters cyclically and automatically delete older records...

Claims

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Application Information

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IPC IPC(8): G06F12/06
Inventor 程金文建国贾宁
Owner SHAANXI QIANSHAN AVIONICS
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