Patent ID: 6678109
Filing Date: 2004-01-13
Classification: G11B

Abstract:
A disk drive comprising:a disk storage medium having a servo area on which servo sectors are recorded and a data area on which data sectors are recorded; a record/regenerate section for performing regeneration of a servo sector recorded on said disk storage medium and also performing recording or regeneration of data sector; a drive section for controlling a position of said record/regenerate section; a control section for performing, at a position based on computed servo data, at least input-output control of data with respect to external equipment and control of the recording and regeneration of a data sector which is performed by said record/regenerate section; a position information extraction section provided separately from said control section for extracting position information indicating the position of said record/regenerate section from a regenerated output of the servo sector regenerated by said record/regenerate section; an arithmetic section provided separately from said control section, the arithmetic section computing servo data for driving said drive section based on the position information extracted by said position information extraction section, wherein said servo data computations are performed without said control section interaction; and an I/O controller, coupled to the drive section, for providing control conflict between the position information extraction section and the control section, wherein the position information extraction section and the arithmetic section offload servo control processing from the control section.