Title:
DATA INTEGRITY VERIFICATION MECHANISM
Document Type and Number:
WIPO Patent Application WO2002057918
Kind Code:
A3
Abstract:
A method and apparatus is provided for maintaining data integrity. According to the method, a physical checksum calculation is performed on a block of data. After performing the physical checksum calculation, a logical check is performed on the data contained with the block of data. If the block of data passes the logical check, then the block of data may be written to nonvolatile memory. Thereafter, when the block of data is read from nonvolatile memory a physical checksum verification procedure is performed on the block of data to determine whether the block of data was corrupted after performing the logical check on the data contained with the block of data.
Inventors:
LOAIZA JUAN
HU WEI-MING
LEE JINGLING
HU WEI-MING
LEE JINGLING
Application Number:
PCT/US2001/049760
Publication Date:
August 19, 2004
Filing Date:
October 19, 2001
Export Citation:
Assignee:
ORACLE INT CORP (US)
International Classes:
G06F11/08; G06F11/10; G11B20/18; (IPC1-7): G06F11/10; G06F11/08
Foreign References:
| US5805799A | 1998-09-08 | |||
| US6009542A | 1999-12-28 | |||
| US5233618A | 1993-08-03 | |||
| US6098190A | 2000-08-01 | |||
| US5696775A | 1997-12-09 | |||
| EP0503417A2 | 1992-09-16 |
Other References:
"IBM OS/2 EXTENDED EDITION CONFIGURATION", IBM TECHNICAL DISCLOSURE BULLETIN, IBM CORP. NEW YORK, US, vol. 32, no. 9B, 1 February 1990 (1990-02-01), pages 446 - 451, XP000082939, ISSN: 0018-8689
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