Patent ID: 7397751

Claim:
An optical disk apparatus comprising: a wobble signal generating section which generates a wobble signal from reflected light from a track in an optical disk on which wobbles modulated by address information are formed; a recording clock generating section which multiplies a frequency of the wobble signal to generate a recording clock for information recording; an address phase generating section which generates an address phase signal indicative of a phase of each wobble address, from the wobble signal; a VFO (Variable Frequency Oscillator) signal generating section which generates a VFO signal in synchronism with the phase of the recording clock; a data stream generating section which generates a first data stream in synchronism with the phase of the recording clock, from input data and generates, for each predetermined data unit constituting the first data stream, a data phase signal indicative of a phase of the data unit; an inserting section which measures a difference in phase between the address phase signal and the data phase signal, and inserts the VFO signal between predetermined amount of the first data streams, to provide a second data stream consisting of the VFO signals and the first data streams, the VFO signal having a length of time corresponding to the difference in phase; and a recording section which records the second data stream on the optical disk.