Soft decoding method and device for solid state disk, equipment and storage medium

Abstract

The invention discloses a soft decoding method and device for a solid state disk, equipment and a storage medium, and the method comprises the steps: determining a target storage region in the solid state disk, and obtaining a target erasing frequency of the target storage region; according to the principle that the lower the erasing frequency of the storage area is, the lower the set corresponding reading frequency is, setting a target reading frequency for the target storage area based on the target erasing frequency; and reading the data from the flash memory of the solid state disk for multiple times according to the target number of reading times, and performing corresponding soft decoding based on the data read from the flash memory. When any storage area in the solid state disk needs to be subjected to soft decoding, according to the principle that the lower the erasing frequency of the any storage area is, the lower the set reading frequency is, the corresponding reading frequency is set for the any storage area, and then multiple times of data reading is performed from the flash memory according to the set reading times so as to realize soft decoding. Therefore, the decoding success rate can be improved while the time cost can be effectively reduced.

Description

technical field [0001] The present invention relates to the technical field of error correction codes, and more specifically, relates to a soft decoding method, device, equipment and storage medium of a solid-state hard disk. Background technique [0002] At present, there are two main types of ECC (Error Correcting Code) in SSD (Solid State Disk), namely BCH (Bose, Ray-Chaudhuri, Hocquenghem, Bose-Johri-Hocquenghem code) And LDPC (Low Density Parity Check Code, Low Density Parity Check Code). However, as SSD has higher and higher requirements for ECC error correction technology, BCH has begun to struggle, so LDPC is the development trend, and it is also the latest and most mainstream error correction code. At present, a fixed number of readings is usually used when performing LDPC, but this method often results in high time cost and even low decoding success rate. Contents of the invention [0003] The object of the present invention is to provide a soft decoding method...

AI Technical Summary

Problems solved by technology

At present, a fixed number of reads is usually used for LDPC, but this method often results in high time costs and even a low decoding success rate

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