Apparatus and method for reading and writing data on a magnetic

Details Apparatus and method for reading and writing data on a magnetic Apparatus and method for reading and writing data on a magnetic

1983-08-18

1985-12-24

Stellar, George G.

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the head

G11B 556

Patent

active

045610282

ABSTRACT:
Apparatus and method for controlling a magnetic head carriage while reading or writing data on a magnetic disc by the use of a pair of heads having zero intertrack spacing and having azimuth angles of plus and minus 45.degree. with the circumference of the disc to sense the timing and phasing of sector sync pulses recorded on the disc and, from such timing phasing, as read by the heads, the rotational position of the disc and the radial position of the head carriage, to generate an appropriate head carriage servo signal which compensates for eccentricity of the disc.

REFERENCES:
patent: 4074328 (1978-02-01), Hardwick
patent: 4149198 (1979-04-01), Behr et al.
patent: 4166282 (1979-08-01), Ragle et al.
patent: 4321634 (1982-03-01), Lehureau
patent: 4347534 (1982-08-01), Kimura
patent: 4419700 (1983-12-01), Ragle et al.
High Technology, vol. 3, No. 8. Aug. 1983, pp. 18-19, Microcomputers-Floppy Disks Push Density Limits, C. Lu.

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