Error detection/correction and fault detection/recovery – Data processing system error or fault handling – Reliability and availability
Reexamination Certificate
2004-10-12
2009-12-15
Baderman, Scott T. (Department: 2114)
Error detection/correction and fault detection/recovery
Data processing system error or fault handling
Reliability and availability
C714S005110, C714S014000, C714S052000
Reexamination Certificate
active
07634688
ABSTRACT:
A system and method for automatically saving the contents of volatile memory in a data processing device on power failure. A secondary power supply is provided, which upon failure of the primary power supply supplies power long enough for all modified information stored in volatile memory to be written to a non-volatile memory device such as NAND flash in an AutoSave procedure. In the preferred embodiment modified sectors in volatile memory are flagged, and only modified sectors with a directory list are written to non-volatile memory during the AutoSave procedure.
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Patent Abstracts of Japan, vol. 008, No. 208, p-302, Sep. 21, 1984 & JP 59 099295 A (Nippon Denki KK), “Backup system of Main Storage Device”, NEC Corp., May 24, 1984 *abstract*.
Huang Wei Yao
Madter Richard C.
Werder Karin Alicia
Baderman Scott T.
Dimock Stratton LLP
Research In Motion Limited
Truong Loan
Wilson Jenna L.
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