Shenzhen Epostar Electronics Limited Co.

Hsiu-Hsien Chu

Yu-Hua Hsiao

Hung-Chih Hsieh

Heng-Lin Yen

Shu-Hsien Li

A memory management method for a storage device having a rewritable non-volatile memory module is provided. The rewritable non-volatile memory module has a plurality of physical blocks. The method includes: scanning the plurality of physical blocks to identify one or more bad physical blocks; performing a bad physical block remapping operation on the one or more bad physical blocks to update a virtual block stripe management table; and performing a writing operation under a multiple plane write mode based on the virtual block stripe management table.

Memory management method and storage controller

A data reading method for a rewritable non-volatile memory module is provided. The method includes receiving a reading command from a host system; identifying a target physical unit of the rewritable non-volatile memory module according to the reading command, and identifying a program erase cycle value, a first timestamp, a second timestamp of the target physical unit, wherein the first timestamp records a time at which the target physical unit is programmed last, and the second timestamp records a time at which the target physical unit is read last; and selecting a target reading voltage set among a plurality of reading voltage set according to the program erase cycle value, the first timestamp, the second timestamp, so as to read a target data from the target physical unit.

Data reading method and storage controller

A data encoding method, a data decoding method, and a storage controller are provided. The encoding method includes: obtaining a verification data corresponding to a raw data according to a write command; adding the verification data to the raw data, and obtaining a scrambled data accordingly; and performing an encoding operation on the scrambled data to obtain a codeword data. The decoding method includes: performing a decoding operation on a codeword data to obtain a decoded codeword data, and obtaining a pre-scrambling data accordingly; identifying a verification data and a raw data in the pre-scrambling data; identifying one or more first system data corresponding to the raw data according to a read command; and determining whether the raw data is correct by comparing the one or more first system data and the verification data.

Data encoding method, data decoding method and storage controller

A data backup method, a data recovery method and a storage controller for a rewritable non-volatile memory module are provided. The data backup method includes receiving a trim command; generating a trim information list according to the trim command and a physical address that stores the trim information list, wherein the trim information list records information corresponding to the trim command and the physical address; storing the generated trim information list into the physical address. The data recovery method includes re-establishing a logical-to-physical table; loading a latest trim information list into a memory from the rewritable non-volatile memory module; updating the re-established logical-to-physical table or the trim information list in the memory according to the trim information.

Data backup method, data recovery method and storage controller

A valid data management method and a storage controller are provided. The method includes creating a valid data mark table and a valid logical addresses table corresponding to a target physical unit according to a logical-to-physical table and a target physical-to-logical table corresponding to the target physical unit, wherein the valid data mark table records a plurality of mark values respectively corresponding to a plurality of target logical addresses, the mark values respectively indicate whether the corresponding logical addresses is valid or invalid, and the valid logical addresses table only records one or more valid target logical addresses according to an order of one or more first bit values in the valid data mark table; and identifying one or more valid data of the target physical unit according to the logical-to-physical table, the valid data mark table and the valid logical addresses table corresponding to the target physical unit.

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Hsinchu, Taiwan

Hsiu-Hsien Chu