Patent ID: 6078460
Filing Date: 2000-06-20
Classification: G11B

Abstract:
A head positioning control system for a disk drive that has a read head, a write head and a disk, the disk being prerecorded with servo data for positioning the read head and the write head, the system comprising:memory means for storing table information containing the servo data used for positioning the read head or the write head at a target position on the disk, said table information including positioning control reference information adapted to be referenced each time of positioning the read head at said target position and positioning the write head at said same target position; andcontrol means for generating positional information indicating the position of the read head or the write head based on the servo data read by the read head at the time of read access or write access, respectively, referencing said table information for said positioning control reference information corresponding to the read access and the write access, and thereby positioning the read head at said target position at the time of read access and positioning the write head at said target position at the time of write access on the basis of said positional information and said positioning control reference information.