Patent ID: 6587409
Filing Date: 2003-07-01
Classification: G11B

Abstract:
A tilt servo apparatus comprising:photodetecting means for detecting a reflected light of a laser beam irradiated to a recording surface of an optical recording medium; tilt error correcting means for correcting a tilt error caused by a tilt angle that is defined between a normal at a laser beam irradiating position on said recording surface and an optical axis of said laser beam; driving means for driving said tilt error correcting means on the basis of an intensity of a detection signal of said photodetecting means; and control means for holding a drive value of said tilt error correcting means to a predetermined value in response to a track jump command for changing said irradiating position of said laser beam from a first irradiating position to a second irradiating position, wherein said control means includes memory means, in accordance with a start of the execution of said jump command, for storing the drive value of said tilt error correcting means before said jump command is executed, and said predetermined value is said stored drive value.