Flash memory, method and apparatus for data management of flash memory
A flash memory and data management technology, which is used in the redundancy of operations for data error detection, response error generation, memory address/allocation/relocation, etc.
Inactive Publication Date: 2010-09-01
SHENZHEN COSHIP ELECTRONICS CO LTD
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[0013] The object of the present invention is to propose a kind of flash memory, and the data management method and equipment for flash memory, to solve the problem of writing data to flash memory , When synchronously updating the description information, the technical problem of data damage or loss in the flash memory due to accidents such as power outages
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[0040] For an easy understanding of the present invention, please refer to figure 1 , is a schematic diagram of a partition structure of a flash memory adopting a backup mechanism in the industry. The flash memory adopts a partition structure, including a data area 110, a backup data area 120 for backing up data in the data area 110, and an exchange (SWAP) area for exchanging data in the data area 110 and the backup data area 120 130. Wherein, the structure of the data area 110 is similar to that of the backup data area 120, including multiple partitions such as a description information partition (SYSCFG) 111 (or 121) for storing partition description information.
[0041] When the data in the data area 110 is modified, the backup data area 120 is updated synchronously through the exchange area 130; if the description information in the description information partition 111 of the data area 110 is modified, the backup data area also needs to be updated synchronously The de...
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The invention discloses a flash memory, a data management method used for the flash memory and a device thereof, wherein the method comprises the following steps of: reading data of the flash memory in an external memory, processing the data read in the memory into the data which are required to be written in the flash memory; after writing the processed data into an exchange area, writing the processed data in a backup data area of the flash memory; writing the processed data in a data area of the flash memory; and synchronously updating description information in the data area and the backup data area. The invention takes the exchange area of the flash memory as a secondary backup area for storing data, when the data are destroyed caused by an unexpected accident during writing the datain the backup data area or / and the data area, the data of the backup data area or / and the data area can be restored after reading the data from the exchange area; therefore, the data management method and the device guarantee damage or loss of the data in the flash memory caused by power failure and other unexpected accidents can be prevented, while writing data in the flash memory and synchronously updating the description information of the flash memory.
Description
technical field [0001] The invention relates to the technical field of data storage management, in particular to a flash memory, a data management method and equipment for the flash memory. Background technique [0002] As a safe and fast storage body, flash memory (Flash Memory, referred to as flash memory) has a series of advantages such as small size, large capacity, low cost, and no loss of data when power is turned off. main storage medium. Since FLASH is quite different from other storage media such as hard disk and E2ROM in structure and operation mode, when using FLASH, the storage system must be specially designed according to its own characteristics to ensure the optimal performance of the system. [0003] Flash memory is a kind of non-volatile memory NVM (Non-Volatile Memory), which can be divided into NOR flash memory and NAND flash memory according to different structures. But no matter what kind of flash memory, it is quite different from other storage media ...
Claims
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IPC IPC(8): G06F12/02G06F11/14
Inventor 佟福磊
Owner SHENZHEN COSHIP ELECTRONICS CO LTD