Patent ID: 6545956
Filing Date: 2003-04-08
Classification: G11B

Abstract:
A disc player which can be used in common for a plurality of types of discs having different focus positions of an object lens with respect to a recording surface, and which carries out focus servo control with respect to the discs and reads out recorded information, the disc player comprising:a judging device which judges a type of disc set at the disc player; a waveform setting device which, from a plurality of waveform information which are held in advance for use in focus searching for the plurality of types of discs, selectively sets a predetermined waveform information in accordance with results of judgement by the judging device; and a focus searching device which, at a time of start-up of the disc player, before the focus servo control is carried out, generates a focus search signal based on the waveform information set by the waveform setting device, and carries out focus searching.