System for controlling reproduction of audio tape in synchronism

Details System for controlling reproduction of audio tape in synchronism System for controlling reproduction of audio tape in synchronism

1975-08-21

1977-06-07

Aegerter, Richard E.

Optics: image projectors

Selective data retrieval

Film strip

352 17, 353 15, G03B 3100, G03B 2306

Patent

active

040279588

ABSTRACT:
A system is disclosed for retrieving a film having video information recorded thereupon in synchronism with a magnetic tape having audio information recorded thereupon and for synchronizing the sound with the picture after retrieval. Address signals are recorded upon both the film and the tape. The system comprises detectors for address signals recorded upon the film and the tape, a computer including a keyboard for retrieving a desired address, comparators for comparing the outputs of the detectors with the output of the computer, and means for transporting the film and tape in response to the outputs of the comparators. Control signals are recorded upon both the tape and film for synchronizing the sound with the picture. When the control signal recorded upon the film is detected, the still picture is projected and when the control signal recorded on the tape is detected the motion picture is projected.

REFERENCES:
patent: 3181421 (1965-05-01), Nimke et al.
patent: 3539248 (1970-11-01), Lancor
patent: 3584396 (1971-06-01), Hannal et al.
patent: 3609019 (1971-09-01), Tuber
patent: 3692390 (1970-03-01), Siegel
patent: 3700320 (1972-10-01), Brewer et al.
patent: 3731063 (1973-05-01), Bickl et al.
patent: 3744890 (1973-07-01), Suzuki et al.
patent: 3768897 (1973-10-01), Spani

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