Apparatus for reproducing motion picture film photographic sound

Details Apparatus for reproducing motion picture film photographic sound Apparatus for reproducing motion picture film photographic sound

1983-03-14

1986-03-18

Richardson, Robert L.

Dynamic information storage or retrieval

Control of storage or retrieval operation by a control...

Mechanism control by the control signal

369 92, 369120, 369125, 369 44, 352 27, G11B 720

Patent

active

045773025

ABSTRACT:
Apparatus for reproducing motion picture photographic (optical) sound-tracks is disclosed in which significant information regarding track placement, slit illumination, azimuth and impulse noise is derived by dynamically processing and comparing the signals obtained by reading each half of a bilateral sound-track. In a further embodiment a pair of detector elements monitors the septum between two tracks in order to detect lateral film misalignment.

REFERENCES:
patent: 2205528 (1940-06-01), Hasbrouck
patent: 2628288 (1953-02-01), Blaney
patent: 3567855 (1971-03-01), Hamisch
patent: 4044207 (1977-08-01), Vlahos
Stereo Review, pp. 38-40, Apr. 1983.

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