Flash memory device data management method and system

Abstract

The invention relates to a method and a system for data management of flash memory equipment. The method includes dividing a memory area of the flash memory equipment into a public memory area and a private memory area used for storing a data mapping table; when write data of one page or multiple pages in the public memory area are identical, marking the write data of the page or multiple pages with virtual write identifiers to acquire identical data, transforming the identical data into corresponding data value bits, and recording the virtual write identifiers and the corresponding data value bits in the data mapping table; and when write data of one page in the public memory area are different, actually writing the write data in the corresponding page in the public memory area. By the method and the system, data writing is reduced, data writing efficiency is improved, data writing time is saved, and space of the public storage memory is also saved.

Description

technical field [0001] The invention relates to the field of storage devices, in particular to a data management method and system for a flash memory device. Background technique [0002] Flash memory devices include SD (SecureDigitalMemoryCard, secure digital card) cards, solid-state drives, U disks, etc., which are more and more common in daily life. Its writing and erasing speed has become an important indicator to measure the performance of flash memory devices. The writing and erasing speed of the device will greatly improve the data processing efficiency, which is conducive to expanding the application of flash memory devices. A flash memory device includes a controller and a storage module. In the storage module, a page is the smallest unit for reading and writing, and a block is the smallest unit for erasing. [0003] Taking a flash memory device of a FAT file system as an example, the FAT file system is divided into a FAT area, a directory area, and a data area. ...

AI Technical Summary

Problems solved by technology

[0011] Based on this, it is necessary to address the problem of low data writing efficiency of flash memory devices in the prior art, and provide a data management method for flash memory devices that can improve data writing efficiency

[0012] In addition, it is also necessary to provide a data management system for flash memory devices that can improve data writing efficiency for the problem of low data writing efficiency in flash memory devices in the prior art

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