Optical disc recording and playback apparatus

摘要

A pickup control circuit 5) for performing a control operation of an optical pickup 3) and an error detection circuit 14) for detecting an error signal from a servo signal obtained from the pickup control circuit 5) are provided. During an operation to change to a faster recording speed, a playback operation for an already recorded signal is performed at the recording speed after the change, and an error detection level is set on the basis of characteristics of the servo signal in the playback operation state.