Erased sector detection mechanisms

Details Erased sector detection mechanisms Erased sector detection mechanisms

2004-12-22

2008-10-14

Chung, Phung M (Department: 2117)

Error detection/correction and fault detection/recovery

Pulse or data error handling

Digital data error correction

C714S746000, C714S784000, C714S785000

Reexamination Certificate

active

07437653

ABSTRACT:
The present invention presents a non-volatile memory and method for its operation that allows instant and accurate detection of erased sectors when the sectors contain a low number of zero bits, due to malfunctioning cells or other problems, and the sector can still be used as the number of corrupted bits is under the ECC correction limit. This method allows the storage system to become tolerant to erased sectors corruption, as such sectors can be used for further data storage if the system can correct this error later in the written data by ECC correction means.

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Notification of Transmittal of the International Search Report and the Written Opinion of the International Searching Authority, or the Declaration for SanDisk Corporation mailed May 22, 2005, 9 pages.
Communication Pursuant to Article 96(2) EPC, Application No. 05 857 177.9, mailed Jan. 2, 2008, 4 pages.

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