Control system for audio-visual projector

Details Control system for audio-visual projector Control system for audio-visual projector

1980-09-15

1982-12-07

Eddleman, Alfred H.

Dynamic magnetic information storage or retrieval

Recorder control of an external device

Slide or movie projectors

353 15, 353 26A, G11B 3100, G03B 3100

Patent

active

043630553

ABSTRACT:
A system for the control, selection and synchronization of the movement of magnetic tape and filmstrip in a film projection system which may include a sound program. Film advance is synchronized with the sound reproduction by means of recorded signals on the magnetic tape which unambiguously specify the filmstrip frame number appropriate to the magnetic tape sound program. Means are provided to allow the operator to rapidly access a particular filmstrip frame by specifying its number. When a sound program is included, the invention assures automatic synchronization of the sound program with the filmstrip frame.

REFERENCES:
patent: 3944348 (1976-03-01), Freudenschuss
patent: 3979774 (1976-09-01), Chen et al.
patent: 4027958 (1977-06-01), Shigeta et al.
patent: 4075668 (1978-02-01), Keach
patent: 4165159 (1979-08-01), Landau et al.

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