Patent ID: 6137646
Filing Date: 2000-10-24
Classification: G11B

Abstract:
A disk apparatus comprising:a disk medium in which sector areas each having a servo area and a data area are provided on a same cylinder and a sector mark indicative of the servo area, a code indicative of a cylinder address, and a predetermined servo pattern to detect a head position have magnetically been recorded in said servo area;a disk control section for detecting the head position on the basis of a read signal of said servo pattern by a head portion and positioning said head portion to an arbitrary cylinder, thereby performing reading and writing operations;a time measuring counter for starting to measure an elapsed time each time a predetermined position in said servo area is detected;a time setting register for storing a time from a detection time point of said predetermined position in said servo area to the generation of a sector pulse;a coincidence detecting section for detecting that the elapsed time measured by said time measuring counter coincides with the set time of said register; anda pulse generating section for generating the sector pulse when the coincidence is detected by said coincidence detecting section,wherein said time setting register stores a time exceeding the time until the detection of the next servo area to inhibit generation of the sector pulse in a selected sector area.