Patent ID: 7336568

Claim:
A method for controlling long seeking operation in an optical disc drive, the optical disc drive comprising a sled actuator, a pickup head installed on the sled actuator for accessing data on an optical disc, and a controller for controlling the sled actuator to move together with the pickup head, the method comprising: (a) receiving remaining tracks information indicating a number of tracks remained to be crossed by the sled actuator and/or the pickup head; (b) receiving velocity information indicating a velocity of the sled actuator and/or the pickup head; (c) receiving acceleration information indicating an acceleration of the sled actuator and/or the pickup head; and (d) driving the sled actuator to move according to the remaining tracks information, the velocity information, and the acceleration information; wherein in step (d), the controller outputs a driving voltage to control a movement of the sled actuator and/or the pickup head; the driving voltage is a function of the velocity and the acceleration of the sled actuator and/or the pickup head; and the driving voltage is influenced by a product of the velocity of the sled actuator and/or the pickup head and a first multiplier.