| 摘要 |
PROBLEM TO BE SOLVED: To accurately attain the production of a recording waveform signal in a disk device even when data are continuously recorded for a long time. SOLUTION: By a recording waveform producing circuit 18, a data signal DATA is worked by synchronizing them with a stipulated delay clock signal SCK2i selectively outputted from a selector 12, then the recording waveform signal SWF is produced. By a selection control part 20, the selecting operation of the selector 12 is controlled during the time the unrecorded state is shown by a signal SST, and further controlled when the data recorded state is shown by the signal SST and also the space period is detected by a mark space detecting circuit 17. |
