Optics: motion pictures – With film carried control signals
Patent
1985-10-07
1987-04-21
Hayes, Monroe H.
Optics: motion pictures
With film carried control signals
355 40, G03B 2150
Patent
active
046591982
ABSTRACT:
A system of inscription on the marginal part of a perforated cinematographic film, of coded information and for reading this information, comprises, for inscription, an assembly of a plurality of light sources adjacent one another, disposed transversely opposite the marginal part of the cinematographic film. A write-in device selectively controls at each instant, the lighting of certain light sources, from among all of them, for the inscription on the film, in coded form, of a plurality of dots aligned transversely in a column. The system also comprises, for reading the coded information inscribed on the film, an assembly of photo-sensitive elements, adjacent one another, extending transversely opposite the marginal part of the film bearing the coded information. Means and provided for recognizing and identifying the combinations of dots inscribed on the film and corresponding to the various characters of information. 7
REFERENCES:
patent: 3885866 (1975-05-01), Stearns
patent: 4215920 (1980-08-01), Butler
patent: 4491399 (1985-01-01), Bell
patent: 4504130 (1985-03-01), Bell et al.
patent: 4519701 (1985-05-01), Kanaoka et al.
patent: 4553833 (1985-11-01), Kanaoka et al.
Beauviala Jean-Pierre
Charras Jean-Pierre
Hayes Monroe H.
Societe anonyme dite: AATON RG.
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