Memory controller for identifying the last valid...

Details Memory controller for identifying the last valid... Memory controller for identifying the last valid...

2011-08-23

2011-08-23

Patel, Hetul (Department: 2186)

Electrical computers and digital processing systems: memory

Storage accessing and control

Specific memory composition

C711S156000, C714S006110

Reexamination Certificate

active

08006030

ABSTRACT:
Data is written in data areas (202) and information for correcting an error of the data and status information indicating that the data has been written are written in redundant areas (203) sequentially from the first page of a physical block (201). In the step of creating information to be written in the physical block (201), the redundant areas (203) of the pages are subjected to a binary search to temporarily identify a last valid page. Further, the contents of every area (the data areas and the redundant areas) of the temporarily identified last valid page and a page adjacent to the temporarily identified last valid page are checked to finally identify the last valid page and make a judgment as to whether or not an error page resulting from power-down exists.

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Extended European Search Report issued in European Patent Application No. EP 06798153.0-2210/2003569 PCT/JP2006318597, dated Mar. 20, 2009.

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