Patent ID: 6449230
Filing Date: 2002-09-10
Classification: G11B

Abstract:
An optical disc drive apparatus, comprising:an optical pickup unit for emitting optical beams focused by an object lens onto a signal surface of an optical disc that is located on a turntable and rotatably driven; and a skew servo mechanism for adjusting an optical axial direction of said optical beams emitted from said optical pickup unit, wherein said skew servo mechanism includes: a pair of parallel running guide members for guiding said optical pickup unit to run in a radial direction of said optical disc; a pair of pivot members secured to a chassis on which a spindle motor having said turntable is mounted for rotatably supporting end portions of said pair of running guide members corresponding to an inner peripheral side of said optical disc by enabling said end portions to slide in a vertical direction perpendicular to said signal surface of said optical disc; a sliding cam secured to said chassis for controlling a rotational movement of other end portions of said pair of running guide members corresponding to an outer peripheral side of said optical disc in said vertical direction via a pair of cam surfaces; skew detecting means for detecting a skew generated on said signal surface of said optical disc; and sliding cam driving means for controlling a sliding movement of said sliding cam based on a result detected by said skew detecting means.