Patent ID: 6118616
Filing Date: 2000-09-12
Classification: G11B

Abstract:
A digital servo control method for controlling a head driver for moving a head for reading servo information to a target track during every predetermined sampling period in a data storage system using disk recording media, with said servo information being indicative of a divisional position of a recording area, said method comprising the steps of:detecting a current track in which said head is positioned in a current sampling period from said servo information;determining, during said current sampling period, an estimation speed and an estimation position track of said head in the next sampling period from a control signal inputted in said head driver and from said current track;in correspondence with a track interval between said target track and said estimation position track, determining a target speed from a look-up table for moving said head to said target track; andoutputting a control signal corresponding to a difference value between said target speed and said estimation speed to said head driver.