Disk drive control system

Details Disk drive control system Disk drive control system

1985-11-14

1987-04-07

Stellar, George G.

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the head

G11B 556

Patent

active

046565388

ABSTRACT:
A disk drive control system includes servo sectors written on a disk, with each sector containing three sets of marker pulses arranged so that three adjacent marker pulses from each of the sets spans two tracks. Positional control utilizes a function comprising a ratio whose denominator value represents the sum of the amplitudes of the two largest amplitude marker pulses detected by the read/write head while traversing a servo sector and who numerator represents the differences in amplitude between said two largest amplitude marker pulses.

REFERENCES:
patent: 4087843 (1978-05-01), Louis et al.
patent: 4511938 (1985-04-01), Betts
IBM Technical Disclosure Bulletin, vol. 20, No. 5, Oct. 1977, pp. 1789-1791, Rotating Record Disk Initialization for Sector Servoing, Dennison et al.

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