Dual-mode demodulator for movement of a servo head

Details Dual-mode demodulator for movement of a servo head Dual-mode demodulator for movement of a servo head

1976-08-10

1978-05-30

Eddleman, Alfred H.

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the head

G11B 558, G11B 1914, G11B 2110

Patent

active

040926834

ABSTRACT:
An improved demodulator principally for receiving dibits from a servo track and generating a position error signal responsive to the servo head position relative to the track as indicated by the dibit signal. The invention improves the functioning of the demodulator for movement of the servo head at both high and low speeds and when noise is encountered in the dibit signal.

REFERENCES:
patent: 3292168 (1966-12-01), Gray
patent: 3404392 (1968-10-01), Sordello
patent: 3427606 (1969-02-01), Black et al.
patent: 3534344 (1970-10-01), Santana
patent: 3691543 (1972-09-01), Mueller
patent: 3818502 (1974-06-01), Chien et al.
patent: 3883894 (1975-05-01), Johnson
patent: 3893180 (1975-07-01), Braun et al.

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