Invention Grant
- Patent Title: Data accessing method for flash memory storage device having data perturbation module, and storage system and controller using the same
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Application No.: US13418810Application Date: 2012-03-13
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Publication No.: US08478949B2Publication Date: 2013-07-02
- Inventor: Chien-Hua Chu , Chih-Kang Yeh
- Applicant: Chien-Hua Chu , Chih-Kang Yeh
- Applicant Address: TW Miaoli
- Assignee: Phison Electronics Corp.
- Current Assignee: Phison Electronics Corp.
- Current Assignee Address: TW Miaoli
- Agency: J.C. Patents
- Priority: TW97125974A 20080709
- Main IPC: G06F12/00
- IPC: G06F12/00

Abstract:
A data accessing method, and a storage system and a controller using the same are provided. The data accessing method is suitable for a flash memory storage system having a data perturbation module. The data accessing method includes receiving a read command from a host and obtaining a logical block to be read and a page to be read from the read command. The data accessing method also includes determining whether a physical block in a data area corresponding to the logical block to be read is a new block and transmitting a predetermined data to the host when the physical block corresponding to the logical block to be read is a new block. Thereby, the host is prevented from reading garbled code from the flash memory storage system having the data perturbation module.
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