Dynamic information storage or retrieval – Control of storage or retrieval operation by a control... – Mechanism control by the control signal
Patent
1991-12-24
1995-05-16
Psitos, Aristotelis
Dynamic information storage or retrieval
Control of storage or retrieval operation by a control...
Mechanism control by the control signal
369 59, 360 40, 360 49, 360 51, G11B 700, G11B 509
Patent
active
054167604
ABSTRACT:
A recovery routine enables data to be read from a sector of an optical data disk in the presence of damaged or missing syncs. If a sync is found, a "sync found" signal is generated to designate a normal read operation, and blocks of data read from the sector are aligned to resyncs distributed in the data stream. If a sync is not found, a pseudo sync is generated to designate a data recovery operation, and blocks of data are aligned to resyncs found in the data stream during a single pass or during separate passes through the sector at the user's option. The syncs and resyncs are searched using windows of programmably variable size for the read and recovery operations.
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Li George
Masood Shakeel
Advanced Micro Devices , Inc.
Psitos Aristotelis
Tran Thang V.
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