Patent ID: 6122237
Filing Date: 2000-09-19
Classification: G11B

Abstract:
A disk drive apparatus comprising:a disk table onto which an optical disk used for recording and/or reproducing information is loaded and which is rotated by a spindle motor;an optical pickup device for irradiating a light beam on said optical disk loaded onto said disk table to thereby record and/or reproduce information on and/or from said optical disk;a skew sensor provided in said optical pickup device for detecting inclination of an optical axis of said light beam irradiated from said optical pickup device relative to said optical disk;a skew control mechanism for adjusting the inclination of the optical axis of said light beam relative to said optical disk based on a detection output from said skew sensor;a reference portion positioned in the vicinity of said disk table and detected by said skew sensor;a recording-density detecting means for detecting a recording density of information on said optical disk; anda control means for setting said skew control mechanism in a predetermined initial state based on an output from said skew sensor based on detection of said reference portion and for carrying out a skew adjustment control by said skew control mechanism based on a detection signal from said recording-density detection means only when a density used for recording information on said optical disk is high density.