Apparatus for preventing flutter and skew in electrical signals

Details Apparatus for preventing flutter and skew in electrical signals Apparatus for preventing flutter and skew in electrical signals

1979-10-12

1981-03-24

Eddleman, Alfred H.

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the head

360 73, 360109, G11B 543, G11B 2102, G11B 2124

Patent

active

042583985

ABSTRACT:
Flutter and skew prevention in the playback of recorded multitrack signals is provided by means of an articulated multitrack magnetic head. The head is positionable, with respect to the medium which is the source of the playback signals, by means of a pair of signal controllable actuators; and such actuators connect to the head at width-wise spaced-apart locations thereof. Operation of the actuators is by means of a pair of respective control signals: a sum signal and a difference signal. The sum signal represents the sum of a first phase error signal corresponding to the phase difference between signals produced by different cores of the multitrack head and a second phase error signal corresponding to the phase difference between a signal produced by a head core and a reference signal. The difference signal represents the difference between the first and second phase error signals, or similarly produced error signals.

REFERENCES:
patent: Re20213 (1936-12-01), Sawyer
patent: 2656419 (1953-10-01), Dingley, Jr.
patent: 2858373 (1958-10-01), Hollmann
patent: 2937239 (1960-05-01), Garber, Jr. et al.
patent: 3183516 (1965-05-01), Sliter
patent: 3204228 (1965-08-01), Eckert, Jr.
patent: 3526726 (1970-09-01), Corbett et al.
patent: 3706861 (1972-12-01), Giel
patent: 3787616 (1974-01-01), Falk
patent: 3900888 (1975-08-01), Uchikoshi et al.

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