Sector servo system data recording/reproducing apparatus without

Details Sector servo system data recording/reproducing apparatus without Sector servo system data recording/reproducing apparatus without

1995-09-18

1998-05-05

Psitos, Aristotelis M.

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the head

360 7804, 360 7708, G11B 5596

Patent

active

057484015

ABSTRACT:
A table containing a servo sector number of the servo sector which includes the data sector, and the ordinal of the data sector at which the data sector is disposed in the servo sector is used to locate a data sector. A control firmware is used to obtain, from the table, the servo sector number of the servo sector including a target data sector and the target data sector number indicating the ordinal at which the target data sector is disposed in the target data sector. The parameters are respectively set in the target servo data sector number register and the target data sector number register. The servo sector number read from servo information previously recorded on the disk is set in the detected servo sector number register. The target servo sector number is compared with the detected servo sector number. If these numbers are equal to each other, the counter is enabled and counts up data sector pulses. When the counter value becomes equal to the target data sector number register value, it is determined that the target data sector is detected, and the sequencer is started, to execute reading/writing.

REFERENCES:
patent: 3701130 (1972-10-01), Ault
patent: 4001883 (1977-01-01), Stvout
patent: 5068755 (1991-11-01), Hamilton
patent: 5172381 (1992-12-01), Karp
patent: 5313340 (1994-05-01), Takayama
patent: 5499232 (1996-03-01), Hardwick
patent: 5500848 (1996-03-01), Best
patent: 5502699 (1996-03-01), Yamasaki et al.
patent: 5526211 (1996-06-01), Hetzler

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