OPTICAL DATA RECORDING AND REPRODUCING APPARATUS

摘要

An apparatus for recording and reproducing digital data in an optical recording disc (8) having a plurality of sector region which has a greatly improved reliability of the recording quality is disclosed. An optical recording disc generally has a dropout which decreases the envelope of a recording or reproduced signal and causes a demodulation error. Before recording, each sector is checked for a dropout, and any sector containing a dropout harmful to the recording signal is skipped in recording, thereby greatly reducing a demodulation error. The apparatus further comprises a device for accurately detecting any form of dropout adversely affecting the recording signal.