| 摘要 |
<p>An apparatus is described for reading an optically readable record carrier, in which apparatus various control signals are derived from signals obtained by sampling the signals supplied by two optical-detector halves with the bit frequency both during the intermediate areas and the pits, the samples taken during the pits being processed separately from the samples taken during the intermediate areas. Preferably, only one sample is taken for each pit and each intermediate area, namely only if the pit or intermediate area is longer than a specific number of clock periods.</p> |
