Patent ID: 7983132

Claim:
An optical disk apparatus comprising: light-receiving means split into at least two elements in a direction of a track of an optical disk, each of the split elements subjecting light reflected from the optical disk to photoelectric conversion and outputting a first reproduction RF signal and a second reproduction RF signal; first analog-to-digital conversion means for converting the first reproduction RF signal into a digital signal, to thereby output a first digital signal; second analog-to-digital conversion means for converting the second reproduction RF signal into a digital signal, to thereby output a second digital signal; addition means for adding the first digital signal to the second digital signal, to thereby output a signal; first clock supply means for supplying a first clock signal used for issuing a conversion timing to the first analog-to-digital conversion means; second clock supply means for supplying a second clock signal used for issuing a conversion timing, which is different from the conversion timing for the first analog-to-digital conversion means, to the second analog-to-digital conversion means, and delaying or advancing the second reproduction RF signal compared to the first reproduction RF signal; and adjustment means for compensating for a phase difference between the first reproduction RF signal and the second reproduction RF signal by means of adjusting a phase difference between the first clock signal and the second clock signal based on an amount of phase difference between the first reproduction RF signal and the second reproduction RF signal.