Patent ID: 6704257
Filing Date: 2004-03-09
Classification: G11B

Abstract:
An apparatus for recording and/or reproducing information on and/or from an optical record disk, said apparatus comprising:an optical head including a semiconductor laser for emitting a laser beam, an objective lens for projecting said laser beam emitted by said semiconductor laser onto said optical record disk, and a photo-detector for receiving laser light reflected by said optical record disk to generate an information signal; a movable member 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 first member secured to said movable member by means of a resilient member; a movable member driver for generating a driving force for moving said movable member between said first and second positions; a disk driver including a turntable for supporting said optical record disk, and a spindle motor secured to said first member and having a driving shaft coupled with said turntable for rotating said turntable together with said optical record disk; an optical head driver for driving at least said objective lens 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 controller for initiating a focus search after generation of said position signal and said rotation signal.