Erase count recovery

Electrical computers and digital processing systems: memory – Storage accessing and control – Specific memory composition

Reexamination Certificate

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Details

C711SE12008

Reexamination Certificate

active

07925822

ABSTRACT:
An erase count of a flash memory block which is lost, e.g., due to power failure is updated or replaced by using known erase counts of other blocks of the flash memory. A flash management algorithm assigns a new erase count value instead of the lost one based on either a maximum value, an average value or a value combining the maximum value of the known erase counts and some tolerance value. The known values may be obtained from wear leveling data or from a stored erase history.

REFERENCES:
patent: 5568423 (1996-10-01), Jou et al.
patent: 5581723 (1996-12-01), Hasbun et al.
patent: 5734816 (1998-03-01), Niijima et al.
patent: 6687325 (2004-02-01), Wells
patent: 7035967 (2006-04-01), Chang et al.
patent: 7085161 (2006-08-01), Chen et al.
patent: 7085341 (2006-08-01), Wells
patent: 7181611 (2007-02-01), Chang et al.
patent: 7287118 (2007-10-01), Chang et al.
patent: 7409492 (2008-08-01), Tanaka et al.
patent: 7657701 (2010-02-01), Shanmuganathan
patent: 7690031 (2010-03-01), Ma et al.
patent: 2004/0083405 (2004-04-01), Chang et al.
patent: 2004/0107377 (2004-06-01), Wells
patent: 2004/0177212 (2004-09-01), Chang et al.
patent: 2005/0108491 (2005-05-01), Wong et al.
patent: 2005/0204187 (2005-09-01), Lee et al.
patent: 2007/0106919 (2007-05-01), Chang et al.
patent: 2007/0233931 (2007-10-01), Tanaka et al.
patent: 2008/0077590 (2008-03-01), Pandit
patent: 2008/0082736 (2008-04-01), Chow et al.
patent: 2008/0276038 (2008-11-01), Tanaka et al.
patent: 2009/0089485 (2009-04-01), Yeh
patent: 2009/0248962 (2009-10-01), Kim et al.
“XSR1.5 Wear Leveling Application Note”, May 2007, Flash Software Group, Samsung Electronics Co., Ltd, Version 1.0, 4 pages (pp. i-ii, 1-2).

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