06985992 is referenced by 67 patents and cites 29 patents.

Methods and apparatus for performing wear leveling in a non-volatile memory system are disclosed. According to one aspect of the present invention, a method for allocating non-volatile memory that is divided into elements includes grouping the elements into a first group, a second group, and a third group. The first group includes erased elements with relatively low wear and the second group includes erased elements with relatively high wear. The method also includes determining when a first element included in the third group is to be replaced by a second element included in the first group. Contents of the first element are copied into the second element obtained from the first group. The contents are then erased from the first element, and the second element is associated with the third group. Associating the second element with the third group includes substantially disassociating the second element from the first group.

Title
Wear-leveling in non-volatile storage systems
Application Number
10/281739
Publication Number
6985992 (B1)
Application Date
October 28, 2002
Publication Date
January 10, 2006
Inventor
Farshid Sabet Sharghi
San Jose
CA, US
Bahman Qawami
San Jose
CA, US
Robert C Chang
Danville
CA, US
Agent
Anderson Levine & Lintel
Assignee
SanDisk Corporation
CA, US
IPC
G06F 12/00
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