Patent ID: 7145851

Claim:
An optical disk apparatus capable of recording information optically on a recordable optical disk whose track is formed in a wobble format, comprising: driving means for driving the recordable optical disk rotationally; detecting means for detecting address information recorded on the recording track, an oscillator element for oscillating a signal of a specific frequency, recording-system clock generating means for generating a recording-system clock used when recording the information onto the recordable optical disk using the signal from said oscillator element as a reference; clock-updating timing outputting means for outputting a clock-updating timing output signal used for switching the recording-system clock based on the address information; monitoring means for monitoring continuity of the address information; and address-information generating means for generating the address information, wherein, if as a result of monitoring by the monitoring means the detected address information does not have the continuity, the recording-system clock used when recording the information onto the recordable optical disk is generated based on the address information generated by the address-information generating means and an output signal of the oscillator element.