Non-volatile memory and non-volatile memory data rewriting...

Details Non-volatile memory and non-volatile memory data rewriting... Non-volatile memory and non-volatile memory data rewriting...

2007-07-03

2007-07-03

Ellis, Kevin L. (Department: 2188)

Electrical computers and digital processing systems: memory

Address formation

Address mapping

Reexamination Certificate

active

10484322

ABSTRACT:
A nonvolatile memory and a data rewriting method of the nonvolatile memory that can readily detect a state of operation at a time of a system failure due to a power failure or the like and quickly and reliably restore the nonvolatile memory to a normal storage state by a simple method. In the nonvolatile memory including a physical block as a storage unit, the physical block having a data area (1) and a redundant area (2), the redundant area (2) includes: a logical block address storing area (3) for storing an address of a corresponding logical block; a previously used physical block address storing area (4) for storing an address of a physical block to be erased; and a status information storing area (6) for storing status information for distinguishing a state of operation in each stage occurring in performing data rewriting operation on the physical block.

REFERENCES:
patent: 5987563 (1999-11-01), Itoh et al.
patent: 6145051 (2000-11-01), Estakhri et al.
patent: 6591328 (2003-07-01), Iida et al.
patent: 2003/0163631 (2003-08-01), Aasheim et al.
patent: 11-272569 (1999-10-01), None
patent: 2001-147864 (2001-05-01), None

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