Patent ID: 6240056
Filing Date: 2001-05-29
Classification: B82Y,G11B

Abstract:
An information recording and reproduction apparatus for an information recording medium, comprising:optical means for emitting a laser beam on a plane of said information recording medium in which a signal is recorded, and detecting a laser beam reflected from said sign recording plane;information reproduction means for reproducing information from the laser beam detected by said optical means;drive means for driving said optical means so as to render said emitted laser beam into a pulsed laser beam; andfirst synchronizing signal generation means for generating and providing to said drive means a first synchronizing signal for emitting said pulsed laser beam on said signal recording plane in reproduction, wherein said first synchronizing signal is generated in synchronization with an internal clock signal extracted from a reproduced signal that is reproduced from a data region of said signal recording plane by said pulsed laser beam, wherein said optical means comprises:a light source for generating said laser beam; andan objective lens subject to tracking control so as to be displaced with respect to said signal recording plane for collecting said laser beam on said signal recording plane, whereinsaid pulsed laser beam is emitted in reproduction by turning on/off said light source in synchronization with said first synchronizing signal.