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A kind of nand FLASH data storage method

A data storage and mass storage technology, applied in the field of avionics, can solve the problems of data loss, not suitable for NAND FLASH applications, limited response time of equipment, etc., and achieve the effect of avoiding download time

Active Publication Date: 2017-11-28
SHAANXI QIANSHAN AVIONICS
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

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

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Embodiment Construction

[0035] 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 NANDFLASH 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 there is only one For chips, the block is the smallest management unit; the entire data area is partitioned according to the blocks, 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 current The data type of 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:

[0036] A: Steps to get the latest rec...

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Abstract

The invention belongs to the technical field of avionics, and in particular relates to a NAND FLASH data storage method, which can effectively solve the problem of data storage management in the field of aviation airborne equipment. This method supports multi-partition operation, can automatically cycle records in each partition, and has natural wear leveling characteristics. It can effectively avoid the power failure problem encountered by other management methods. And it can support search by time and search by specific parameters, especially in the storage of massive data, it can avoid the dumping time of a large amount of useless information, and effectively solve the common problems of data storage management in the field of aviation airborne equipment.

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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Patent Type & Authority Patents(China)
IPC IPC(8): G06F12/06
Inventor 程金文建国贾宁
Owner SHAANXI QIANSHAN AVIONICS
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