Patent ID: 7016285
Filing Date: 2006-03-21
Classification: G11B

Abstract:
1. A linking gap detecting device for detecting a linking gap on an information recording track of an optical recording medium which has the information recording track and prepits on a recording face thereof, the information recording track in which marks indicating information data and marks each indicating a synchronous signal being formed, and the prepits being formed at intervals to indicate information relating to the information recording track between adjacent track portions of the information recording track, said linking gap detecting device comprising: a light beam irradiating device for irradiating a light beam to said information recording track; a light detector for receiving reflected light of the light beam irradiated to said information recording track to generate a light detecting signal; a synchronous detector for detecting a synchronous signal of the light detecting signal; and a synchronous interval judging device for judging whether an existing interval of the synchronous signal detected by said synchronous detector lies within a predetermined interval range or not; wherein the linking gap is detected on the basis of a result of the judgment by said synchronous interval judging device.