Nonvolatile semiconductor memory device for supporting high...

Details Nonvolatile semiconductor memory device for supporting high... Nonvolatile semiconductor memory device for supporting high...

2011-08-30

2011-08-30

Bradley, Matthew (Department: 2187)

Electrical computers and digital processing systems: memory

Storage accessing and control

Specific memory composition

C711S202000, C711S221000

Reexamination Certificate

active

08010736

ABSTRACT:
A method for reducing a memory map table search time when employing a semiconductor memory device as a temporary memory of large capacity storage device, and a semiconductor memory device therefore, are provided. A MAP RAM is prepared for storing map table data related to the nonvolatile memory area in the volatile memory area. At an initial power-up operation, it is determined whether a logical address is searched for from the map table data while the map table data existing in a map storage area of the nonvolatile memory area is loaded into the MAP RAM. A physical address corresponding to the logical address is provided as an output, when the logical address is searched for. Search time for a memory map table is reduced and read performance in a high speed map information search is increased.

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patent: 7613876 (2009-11-01), Bruce et al.
patent: 2004/0221130 (2004-11-01), Lai et al.
patent: 1129078 (1999-10-01), None
patent: 2004-086295 (2004-03-01), None
patent: 1999012215 (1999-02-01), None
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English Abstract for Publication No. 2004-086295.
English Abstract for Publication No. 10-2006-0129329 (for 10-0781196).

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