Optics: motion pictures – With sound accompaniment – Common picture and sound record carrier systems
Patent
1994-05-23
1996-08-06
Adams, Russell E.
Optics: motion pictures
With sound accompaniment
Common picture and sound record carrier systems
G03B 3102
Patent
active
055438687
ABSTRACT:
A method and apparatus for optically reading or reproducing digital information recorded as a plurality of pits on at least one track of a movie film. A linear light source having a plurality of light elements, such as LED's, is arranged such that light from at least one of the light elements is irradiated on each of the pits. The light or optical beam from the linear light source is transmitted through the pits of the movie film and received by a light receiving element, such as a photodiode, having a single light receiving portion. The light elements of the linear light source are lit sequentially so that the digital information recorded in each line of each track may be read out at a pit unit by the light receiving element.
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Adams Russell E.
Frommer William S.
Mahoney Christopher E.
Sinderbrand Alvin
Sony Cinema Products Corporation
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