Patent ID: 7307930

Claim:
An optical disk apparatus for obtaining a plurality of servo signals by separating a laser beam into at least two beams, converging said at least two beams on a first spot and at least one second spot on a recording medium, and photoelectrically converting reflected beams from the first spot and said at least one second spot at the time of recording data on the recording medium, the optical disk apparatus comprising: first converting means for converting the reflected beam from the first spot into an electrical signal; first sample-and-hold means for sampling and holding the electrical signal obtained by the first converting means; second converting means for converting the reflected beam from said at least one second spot into an electrical signal; second sample-and-hold means for sampling and holding the electrical signal obtained by the second converting means; signal generating means for generating, based on a given first sampling-timing signal for determining sampling timing for the first sample-and-hold means, a second sampling-timing signal for determining sampling timing for the second sample-and-hold means; and transmitting means for transmitting, to signal processing circuits at a subsequent stage, sampled-and-held signals obtained by the first and second sample-and-hold means.