Flash memory equipment, method and system for managing flash memory

Abstract

The invention provides flash memory equipment, a method and a system for managing a flash memory, which relate to the filed of semiconductor memory media. The method comprises the following steps: A,recording and configuring information according to the quality of a physical block of the flash memory, and establishing a binding table of the physical block and a recording table of a fragmentary block; and B, accessing the flash memory based on the binding table of the physical block and the recording table of the fragmentary block. The invention also provides the system for managing the flashmemory, which comprises a host computer, a control unit and the flash memory, wherein the host computer and the control unit are connected and perform data interaction; the control unit is used for accessing and controlling the flash memory; the host computer records and configures the information according to the quality of the physical block of the flash memory, and establishes the binding tableof the physical block and the recording table of the fragmentary block; and the control unit accesses the flash memory based on the binding table of the physical block and the recording table of thefragmentary block. The invention also provides the flash memory equipment. The adoption of the flash memory equipment, the method and the system for managing the flash memory can improve the availablecapacity of the flash memory.

Description

technical field [0001] The present invention relates to the field of semiconductor storage media, and more specifically, to a flash memory device, a flash memory management method and a system. Background technique [0002] Flash Memory (Flash Memory) is a continuously powered non-volatile memory that can be deleted and reprogrammed in blocks. Flash memory is a variant of EEPROM (Electrically Erasable Read-Only Memory). EEPROM is erased and rewritten in units of bytes, and flash memory is erased and rewritten in units of blocks. Therefore, flash memory is faster than EEPROM and is called Widely used as storage media in digital cameras, handheld computers, MP3 and other small digital products. [0003] figure 1 Shows the internal structure of the flash memory. refer to figure 1 , the flash memory includes a plurality of blocks, such as block 0, block 1, block 2...block 1024, each block includes a plurality of pages, and each page includes a plurality of sectors. In the t...

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Problems solved by technology

[0007] One of the objects of the present invention is to provide a flash memory device, flash memory management method and system, aiming at solving the problem of low available capacity of flash memory in the prior art

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