Dynamic information storage or retrieval – Control of storage or retrieval operation by a control... – Mechanism control by the control signal
Patent
1998-04-13
2000-05-09
Huber, Paul W.
Dynamic information storage or retrieval
Control of storage or retrieval operation by a control...
Mechanism control by the control signal
369 32, G11B 509
Patent
active
060613130
ABSTRACT:
An optical disk drive includes a first detection unit which detects a first time signal and a first error signal, the first time signal indicating a time code of pregrooves of a recordable optical disk, the first error signal being indicative of an error of the first time signal. A second detection unit detects a second time signal and a second error signal, the second time signal indicating a time code of recorded data of the disk, the second error signal being indicative of an error of the second time signal. A time determination unit determines the first time signal as being a current time when no error of the first time signal is indicated by the first error signal, and determines the second time signal as being the current time when an error of the first time signal is indicated by the first error signal and no error of the second time signal is indicated by the second error signal. A comparator detects whether the determined current time matches with a target time. An encoder starts writing data to the disk when a coincidence of the determined current time and the target time is detected.
Huber Paul W.
Ricoh & Company, Ltd.
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