Encoding system

Details Encoding system Encoding system

1976-09-13

1978-05-30

Hix, L. T.

Optics: motion pictures

Removable film strip magazine type

354115, 350130, 352 43, 353 10, 355 22, G03B 3500, G02B 2722

Patent

active

040926540

ABSTRACT:
An improved camera and process of coding images and a product produced thereby is described in which an image of graphics is scrambled by operation of a pseudoscopic camera. The graphics and focal plane-type shutter are moved simultaneously relative to an objective lens and a graticule so as to produce an image of the graphics which will appear inchoate to ordinary vision. The image can be unscrambled by viewing the same through a graticule of the same nature as that used in the scrambling process.

REFERENCES:
patent: 3731606 (1973-05-01), Geoffray
patent: 3781104 (1973-12-01), Dubuisson
patent: 3937565 (1976-02-01), Alasia

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