Patent ID: 6172956
Filing Date: 2001-01-09
Classification: G11B

Abstract:
An optical recording/reproducing device for recording/reproducing information into/out of an optical recording medium that has a track, one of the sidewalls of the track wobbling, and that is provided with a notch bit in the track having a different frequency from a wobble signal read out of the wobbling of the sidewall of the track,the optical recording/reproducing device comprising:recording medium drive control means for controlling a relative velocity between the optical recording medium and a light beam in accordance with the wobble signal reproduced out of the track;reference signal extracting means for extracting a reference signal out of the notch bit of the track;recording/reproducing clock generating means, to which the reference signal is inputted, for generating a recording/reproducing clock synchronizing with the reference signal; andrecording/reproducing means for synchronizing a recording position of a bit for recording information with a position of the notch bit, and for thus recording/reproducing information in accordance with the recording/reproducing clock.