Data recording device, controller for data recording device and data recording method
AssigneeMatsushita Electric Industrial Co., Ltd.
InventorYasuhisa Mashiko
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AssigneeMatsushita Electric Industrial Co., Ltd.
InventorYasuhisa Mashiko
Estimating the term…
In the case where a data recording operation is suspended, even when a synchronization pattern cannot be detected due to a scratch of an optical disk or the like, a position where the last data is recorded is precisely detected so as to resume the recording operation without causing a joint. For this purpose, in resuming the suspended recording operation in the data recording device of this invention, reproducing pattern data corresponding to a pit pattern having been recorded in the optical disk is first reproduced. A synchronization pattern detection circuit detects a synchronization pattern and outputs a pre-complementation synchronization signal. A synchronization signal complementation circuit detects presence of a synchronization signal (synchronization signal pulse) and outputs a detection/loss signal to a synchronization signal non-detection counter. Also, when the synchronization signal is lost, the synchronization signal complementation circuit complements the synchronization signal and outputs a post-complementation synchronization signal to an address detection/complementation circuit and the like. The synchronization signal non-detection counter outputs a non-complementation signal when synchronization signals are continuously lost, so as to stop the resumption of the recording operation.
A controller for a data recording device for once suspending a recording operation on a recording medium and resuming the recording operation continuously from an end of recording data recorded before suspension, comprising:
A data recording device for once suspending a recording operation on a recording medium and resuming the recording operation continuously from an end of recording data recorded before suspension, comprising:
A data recording method in which a recording operation on a recording medium is once suspended and the recording operation is resumed continuously from an end of recording data recorded before suspension, comprising:
Dependencies are inferred from the claim text.