| 摘要 |
A periodic track modulation is or has been formed in the record carrier, whose period corresponds to a frequency for which the random power spectrum of the digitally coded information to be recorded or recorded at least substantially exhibits a zero point, in order to generate a clock signal of bit frequency during recording or reproduction. Said periodic track modulation has a phase which shifts from track to track in the radial direction B in order to indicate an undesired transition from one track to an adjacent track during recording and to interrupt the recording process in due time in order not to write over the adjacent track. <IMAGE> |
