Programmable start-of-sector pulse generator for a disk drive us

Details Programmable start-of-sector pulse generator for a disk drive us Programmable start-of-sector pulse generator for a disk drive us

1992-04-16

1994-01-04

Pascal, Robert J.

Dynamic magnetic information storage or retrieval

General processing of a digital signal

Data clocking

360 49, G11B 509

Patent

active

052765644

ABSTRACT:
A disk drive system employs uniform size data blocks, with each disk having a sectorized track format and each sector of a track including at least one servo burst. Data blocks exhibit a constant data density across a plurality of disk tracks of differing radii. The system comprises read/write apparatus for accessing both servo signals and data signals in each disk sector. A servo system is responsive to servo signals fed from the read/write apparatus to generate a synchronizing signal. A data sector pulse generation circuit is responsive to the synchronizing signal to generate and pass to the read/write apparatus, a data sector pulse for each block of data commencing in a sector. That data sector pulse enables operation of the read/write apparatus upon the data block. A control circuit enables the delay of generation of a next data sector pulse when any block of data is split by a servo burst. The delay period is the duration of the servo burst and the portion of the data block that follows the servo burst.

REFERENCES:
patent: 4757406 (1988-07-01), Stewart et al.
patent: 4918677 (1990-04-01), Ashinuma et al.
patent: 5130863 (1992-07-01), Yamashita et al.
patent: 5164866 (1992-11-01), Sano et al.

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