Speed control system for a multiple speed tape recording and rep

Details Speed control system for a multiple speed tape recording and rep Speed control system for a multiple speed tape recording and rep

1980-02-15

1982-07-06

Eddleman, Alfred H.

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the record

318318, G11B 1546, G11B 1928

Patent

active

043386407

ABSTRACT:
A tape speed control system for a multiple speed tape recording and reproducing apparatus comprising a transducer head for reproducing a tape speed indicative signal which has been recorded along an edge of a recording tape. The frequency of the reproduced speed indicative signal is compared with a plurality of reference values to determine to which one of separate frequency bands the frequency of the reproduced speed signal belongs. If the latter belongs to the frequency band other than the frequency band which includes a predetermined frequency derived when the playback speed equals to the recording speed, a corresponding motor drive signal is generated to vary the speed of the tape until the frequency of the reproduced speed signal reaches the predetermined frequency.

REFERENCES:
patent: 3702382 (1972-11-01), Brelkss
patent: 3772468 (1973-11-01), Tatsuguchi
patent: 3939490 (1976-02-01), Opelt
patent: 3990108 (1976-11-01), Suga et al.
patent: 4044389 (1977-08-01), Oldershaw et al.
patent: 4104684 (1978-08-01), Wakami
patent: 4212039 (1980-07-01), Koda
patent: 4232257 (1980-11-01), Hashberger, Jr.
patent: 4249220 (1981-02-01), Yasutake et al.

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