Data accessing method for flash memory module

摘要

A storage apparatus is provided. The controller of the storage apparatus includes an error correction module and a data disordering module. The error correction module is configured to perform an error correction procedure for a data packet to be written into a flash memory module of the storage apparatus for generating sequence data codes containing the data packet and corresponding error correcting codes, wherein the data packet includes a data area recording data to be written and a spare area recording data related to the data packet. The data disordering module is configured to convert the sequence data codes into non-sequence data codes, wherein the data of the data area and the spare area and error correcting codes are dispersed in the non-sequence data codes. Accordingly, it is possible to effectively increase the safety of the data packet.

主权项

1. A data accessing method, suitable for a flash memory module, and the data accessing method comprising:
performing an error correction encoding for a data packet to be stored in the flash memory module to generate a sequence data code containing the data packet and a corresponding error correction code of the data packet, wherein the data packet comprises user data and system data, and the system data comprises logical to physical mapping relationship of the user data; converting the sequence data code into a non-sequence data code based on an inverting operation for the user data, the system data and the corresponding error correction code, wherein the user data, the system data, and the corresponding error correction code are inverted in the non-sequence data code; and storing the non-sequence data code to a page of the flash memory module.