Combination digital and analog soundtrack system and method

Details Combination digital and analog soundtrack system and method Combination digital and analog soundtrack system and method

1995-03-13

1997-07-29

Rutledge, D.

Optics: motion pictures

With sound accompaniment

Common picture and sound record carrier systems

352 37, 352 92, G03B 3102, G03B 3100

Patent

active

056526423

ABSTRACT:
The present invention overcomes the wear and tear problems caused by prior art methods by placing the digital information in the space reserved for analog soundtrack information, which traditionally is not touched by transport rollers or pressure plates. This invention describes a method by which digital information is simultaneously recorded with the analog track in the same area occupied by the present analog track by utilizing the techniques of spectral processing and digital bit manipulation. Thus, maximum separation and minimal interference can be achieved between the digital and analog tracks.

REFERENCES:
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patent: 4090031 (1978-05-01), Russell
patent: 4663518 (1987-05-01), Borror et al.
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patent: 5155510 (1992-10-01), Beard
patent: 5239338 (1993-08-01), Pearson et al.
patent: 5327182 (1994-07-01), Kohut et al.
patent: 5471263 (1995-11-01), Odaka

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