Patent ID: 6999385
Filing Date: 2006-02-14
Classification: G11B

Abstract:
1. An optical disk apparatus for moving a feed when data is read from an arbitrary position on an optical disk surface, thereby performing a tracking control, said optical disk apparatus comprising: a number-of-feed-seek-tracks calculator operable to calculate a number of tracks on an optical disk by which a lens is to be moved by a feed seek before a kick seek; a kick seek direction judger operable to judge whether a direction of the kick seek is an inner radial direction or an outer radial direction on the basis of a current position and a target position of the lens just before the kick seek starts; a number-of-kick-seek-tracks calculator operable to calculate a number of tracks on an optical disk by which the lens is moved by the kick seek; a reference feed shifting amount calculator operable to calculate a reference feed shifting amount on the basis of the number of tracks calculated by said number-of-kick-seek-tracks calculator; a compensation amount calculator operable to calculate a compensation amount by multiplying the number of tracks calculated by said number-of-feed-seek-tracks calculator by a compensation coefficient; a feed shifting amount calculator operable to add the compensation amount and the reference feed shifting amount when the direction is judged to be the inner radial direction by said kick seek direction judger, and to subtract the compensation amount from the reference feed shifting amount when the direction is judged to be the outer radial direction, thereby calculating a feed shifting amount; and a controller operable to subsidiarily move the feed by the feed shifting amount in concurrence with the kick seek.