Signal processing apparatus for reproducing optical disc, optical disc reproducing apparatus and RF signal equalizer gain adjustment method

摘要

For every optical disc to be played back, an OFT signal detecting apparatus detects an OFT signal, from which an asymmetric optical disc is identified. Upon identification of such a disc, when written data are asymmetric, an equalizer characteristic changing apparatus changes the equalizer gain setting regarding an RF signal, thereby making it possible for an LSI for reproducing of optical disc to normally identify and play back even such an optical disc which has heretofore been impossible to play back.