Magnetic disc read head positioning device and method

Details Magnetic disc read head positioning device and method Magnetic disc read head positioning device and method

1997-08-01

1999-12-14

Sniezek, Andrew L.

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the head

360 7702, G11B 5596

Patent

active

060025425

ABSTRACT:
A servo-demodulator for a pair of alternating signals generated by a magnetic disc read head and indicative of the position of the read head in relation to the center of a recorded track. The servo-demodulator comprises a peak detector for successively and individually sampling the amplitude of each of a plurality of peaks of the pair of alternating signals, and a capacitor periodically connected to the output of the peak detector by a control logic for deriving a weighted average of the various successively sampled amplitudes. In this manner, the control logic obtains an averaged measure of amplitude with high immunity to noise.

REFERENCES:
patent: 4380034 (1983-04-01), Krake
patent: 4833551 (1989-05-01), Song
patent: 5483393 (1996-01-01), Mento et al.
patent: 5801896 (1998-09-01), Freitas
Patent Abstract of Japan, of JP7201146 Head Positioning Control Device of Magnetic Disk Device and Method Thereor, Masahiko Aug. 4, 1995.

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