Patent ID: 6345025
Filing Date: 2002-02-05
Classification: G11B

Abstract:
An apparatus for recording and/or reproducing information on and/or from an optical record disk comprising:a semiconductor laser for emitting a laser beam; an optical head including an objective lens for projecting said laser beam emitted by said semiconductor laser onto said optical record disk and a photodetector for receiving laser light reflected by said optical record disk to generate an information signal; a movable block which is movable between a first position close to a surface of said optical record disk and a second position away from the surface of said optical record disk; a movable block driving means for moving said movable block between said first and second positions; a disk driving means including a turntable for supporting said optical record disk, and a spindle motor secured to said movable member and having a driving shaft coupled with said turntable for rotating said turntable together with said optical record disk; an optical head driving means for moving at least said objectives be of said optical head in a radial direction of said optical record disk; a position detector for detecting a first condition that said movable member has been moved into said first position and a second condition that said movable member has been moved into said second position and generating a position signal when said position detector detects said first condition; a rotation detector for detecting a rotation of said optical record disk to generate a rotation signal; and a control means for initiating a focus search after generation of said position signal and said rotation signal.