Sound motion-picture camera

Details Sound motion-picture camera Sound motion-picture camera

1976-06-09

1978-04-18

Hayes, Monroe H.

Optics: motion pictures

With sound accompaniment

Picture and sound synchronizing

352 25, 352 27, 352174, G03B 3100

Patent

active

040848914

ABSTRACT:
The camera includes a drive arrangement for effecting transport of sound motion-picture film through the camera along a predetermined path. A recording unit is operative for recording audio information onto the sound track of the motion-picture film. A suppressing device is automatically operative for preventing the recording of sound by the recording unit when the drive arrangement is being started up at the start of the filming of a scene and when the drive arrangement is being stopped at the end of the filming of a scene, to prevent the recording on the sound track of noise and interference signals generated by the drive arrangement.

REFERENCES:
patent: 2031836 (1936-02-01), Kellogg
patent: 2208404 (1940-07-01), Aalberg
patent: 3879114 (1975-04-01), Stenzenberger
patent: 3905691 (1975-09-01), Floden
patent: 3984179 (1976-10-01), Krumbein

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