Control method of control device conducting data input and...

Electrical computers and digital processing systems: memory – Storage accessing and control – Specific memory composition

Reexamination Certificate

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Details

C713S001000, C714S006130, C711S166000

Reexamination Certificate

active

06976124

ABSTRACT:
When a request to conduct format process is received from the external device, a write history management table which records histories of conducted writing processes in block units is referred to confirm whether or not writing process has been conducted to the block. As a result of the confirmation, the format process is conducted to only a block, which a writing process has not been conducted, and a history of conducting the writing process of the formatted block is recorded. In conducting the format process, when a request is received to conduct reading process and/or writing process from the external device, the write history management table is referred, and only in a case that a writing process has been conducted to said block, the disk array device is accessed and a reading process and/or writing process is conducted to the block.

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patent: 2004/0221102 (2004-11-01), Watanabe
patent: 09-330180 (1997-12-01), None

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