System and method for scrubbing errors in very large memories

Details System and method for scrubbing errors in very large memories System and method for scrubbing errors in very large memories

2005-01-25

2005-01-25

Beausoliel, Robert (Department: 2113)

Error detection/correction and fault detection/recovery

Data processing system error or fault handling

Reliability and availability

C714S005110, C714S718000, C714S764000

Reexamination Certificate

active

06848063

ABSTRACT:
Systems and methods for improving scrubbing techniques are provided. In one aspect, the error correction code for a memory line is strengthened by reorganizing the memory line into distinct portions and providing an error code set that includes a distinct error code for each portion of the memory line. In another aspect of the invention, the scan rate is effectively increased by moving memory scrubbing functionality into the memory system and distributing it among a number of subcomponents that can operate scrubbing functions in parallel. The effective scan rate increase reduces the probability of failure for any given ECC strength.

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