Optical recording/reproducing apparatus including means for synchronizing the phase of a data read clock signal with data recorded on an optical recording medium

摘要

The present invention relates to an optical recording/reproducing apparatus that can be suitably adapted to a magneto- optical disc apparatus which records data on, for example, a magneto- optical disc or reproduces data therefrom. An auxiliary synchronizing signal (3h) is recorded at a predetermined position on a recording medium, (1) on which a synchronizing signal (2a) is periodically prerecorded in advance, by the same recording means as the recording means for recording data between the synchronizing signals (2a) and (2a) and a phase of a data read clock signal of which the phase is locked by the synchronizing signal is controlled on the basis of the auxiliary synchronizing signal (3h). Thus, data can be properly read from the recording medium (1).