File control system and file control device

Details File control system and file control device File control system and file control device

2005-09-29

2009-11-24

Abraham, Esaw (Department: 2112)

Error detection/correction and fault detection/recovery

Pulse or data error handling

Digital data error correction

C714S754000, C714S724000

Reexamination Certificate

active

07624324

ABSTRACT:
A file control system performing DMA (direct memory access) transfer is provided. The file control system includes file control devices, and each of the file control devices is provided between a host computer and an external storage device. A first file control device among the file control devices checks for errors in the data read from a memory, changes the error detection code added to the read data from a first error detection code to a second error detection code, changes at least a part of the data when an error is detected, and executes DMA-transfer of the data, which is changed or is not changed, to a second file control device of the transfer destination.

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Japanese Office Action, mailed by the Japanese Patent Office on Apr. 7, 2009 in connection with corresponding JP 2005/41539.

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