07173852 is referenced by 214 patents and cites 125 patents.

In order to maintain the integrity of data stored in a flash memory that are susceptible to being disturbed by operations in adjacent regions of the memory, disturb events cause the data to be read, corrected and re-written before becoming so corrupted that valid data cannot be recovered. The sometimes conflicting needs to maintain data integrity and system performance are balanced by deferring execution of some of the corrective action when the memory system has other high priority operations to perform. In a memory system utilizing very large units of erase, the corrective process is executed in a manner that is consistent with efficiently rewriting an amount of data much less than the capacity of a unit of erase. Data is rewritten when severe errors are found during read operations. Portions of data are corrected and copied within the time limit for read operation. Corrected portions are written to dedicated blocks.

Title
Corrected data storage and handling methods
Application Number
11/253531
Publication Number
7173852 (B2)
Application Date
October 18, 2005
Publication Date
February 6, 2007
Inventor
Kevin M Conley
San Jose
CA, US
Carlos J Gonzalez
Los Gatos
CA, US
Reuven Elhamias
Kfar-Vradim
IL
Sergey Anatolievich Gorobets
Edinburgh
GB
Agent
Parsons Hsue & de Runtz
Assignee
SanDisk Corporation
CA, US
IPC
G11C 11/34
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