Error detection/correction and fault detection/recovery – Pulse or data error handling – Digital data error correction
Patent
1997-12-18
2000-06-13
Baker, Stephen M.
Error detection/correction and fault detection/recovery
Pulse or data error handling
Digital data error correction
714 6, 714773, G06F 1110, G11C 2900
Patent
active
060761830
ABSTRACT:
The invention relates to a method of correction of corrupted data stored in a memory location by scrubbing. The memory is associated with an error correcting code device which corrects the data transmitted to a user requesting them. The method comprises three steps. During a first step, the data is read from the memory at an address contained in a first register, corrected, and stored into a second register. A reservation is created. During a second step, if a reservation exists the data contained in the second register is written back into the same memory location. The reservation is cleared and a particular field of a condition register is modified. If a reservation does not exist, the second step is completed without altering the memory location. During the third step, the status of the condition register is checked. If the test is positive the process is ended, the scrubbing being successful; if not, an iteration of the three above steps is executed.
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Espie Eric
Menyhart Zoltan
Baker Stephen M.
Bull S.A.
Kondracki Edward J.
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