Data sector/servo split generator for a disk drive

Details Data sector/servo split generator for a disk drive Data sector/servo split generator for a disk drive

1996-12-20

2000-09-19

Psitos, Aristotelis M.

Dynamic magnetic information storage or retrieval

General processing of a digital signal

Data clocking

360 7708, G11B 509, G11B 5596

Patent

active

06122121&

ABSTRACT:
A data sector/servo split generator is disclosed for a disk drive apparatus implementing a zone bit recording format and having an embedded sector servo system where servo sector fields split at least one data field on a surface of a disk in the disk drive apparatus. A first counter is provided to count an amount of time to the beginning of a data field, and a first signal (SECTOR) is generated to indicate when the beginning of a data field is encountered by a read/write head in the disk drive. A second signal (SPLIT.sub.-- VALID) is generated by the data sector/servo split generator if a next data field after the generation of the SECTOR signal is split by a servo sector field. A second counter counts a predetermined number of data bytes transferred between a surface of a disk in said disk drive apparatus and said disk controller, so that a third signal (SPLIT) is generated, the SPLIT.sub.-- VALID signal is generated, when a servo sector is encountered in a data field by the read/write head. The SECTOR and SPLIT signals are supplied to a disk controller which uses those signals to control the transfer of data to and from the disk.

REFERENCES:
patent: 5274509 (1993-12-01), Buch
patent: 5276564 (1994-01-01), Hessing et al.
patent: 5307216 (1994-04-01), Cook et al.
patent: 5455721 (1995-10-01), Nemazie et al.
patent: 5539795 (1996-07-01), Takase
patent: 5627695 (1997-05-01), Prins et al.
patent: 5798885 (1998-08-01), Saiki et al.

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