Downgrade memory apparatus, and method for accessing a...

Details Downgrade memory apparatus, and method for accessing a... Downgrade memory apparatus, and method for accessing a...

2011-06-28

2011-06-28

Bragdon, Reginald G (Department: 2189)

Electrical computers and digital processing systems: memory

Storage accessing and control

Control technique

C711S155000, C711S209000, C711SE12059

Reexamination Certificate

active

07971007

ABSTRACT:
A method for accessing a downgrade memory and a downgrade memory apparatus are provided. The downgrade memory apparatus comprises at least one management unit and a controller. The management unit comprises a plurality of blocks, each block having a plurality of pages, and each page having a plurality of sectors, the downgrade memory having a plurality of non-accessible sectors. The controller is configured to parse a write command corresponding to a special block, to select at least one accessible sector according to a status information of the special block and to program the write command to the special block, wherein the status information indicates at least one non-accessible sector in the special block. Thereby the method and the apparatus of downgrade memory may as well omit the non-accessible sectors as enhance the usage memory capacity in accordance with the status information.

REFERENCES:
patent: 6446177 (2002-09-01), Tanaka et al.
Office Action from corresponding Chinese Application No. 2008101767814 dated Jan. 19, 2011. English machine translation attached.

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