Optical disc apparatus, access method, program and semiconductor integrated circuit

摘要

An optical disc apparatus is provided for accessing an optical disc having at least one track, in which at least one prepit is provided in the at least one track. The apparatus comprises a light irradiation section for irradiating the at least one track with light, a first signal generating section for detecting light reflected from the at least one track, and based on the reflected light, generating a first signal including a prepit signal indicating the at least one prepit, a second signal generating section for removing a signal component impeding detection of the prepit signal from the first signal to generate a second signal, and a prepit detecting section for detecting the at least one prepit based on at least one of the first signal and the second signal.