Error detection/correction and fault detection/recovery – Pulse or data error handling – Replacement of memory spare location – portion – or segment
Reexamination Certificate
2006-11-21
2006-11-21
Chung, Phung My (Department: 2138)
Error detection/correction and fault detection/recovery
Pulse or data error handling
Replacement of memory spare location, portion, or segment
C714S041000
Reexamination Certificate
active
07139942
ABSTRACT:
A system maintains a copy of data stored in a first memory device in a redundant distinct second memory device. Upon detecting an uncorrectable error in the first memory device, the system then relies on the copy of the data in the second memory device. The system, once it starts relying on the data in the second memory device, may then test the first memory device to determine if the uncorrectable error was due to a physical problem or a transient event. If the first memory device is then found to be working correctly, it may, in turn, become a redundant memory device for the second memory device.
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Satya et al., “Electronic Reorganization of Memory for Handling Uncorrectable Memory Errors”,IBM Technical Disclosure Bulletin, vol. 22, No. 12, pp. 5378-5381, May 1980.
Johnson John G.
Onufer Gregory C.
Subramanian Srinivasan
Chung Phung My
Gunnison Forrest
Gunnison McKay & Hodgson, L.L.P.
Sun Microsystems Inc.
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