Photographic information display systems for use in photographic

Details Photographic information display systems for use in photographic Photographic information display systems for use in photographic

1982-03-29

1984-03-13

Gellner, Michael L.

G03B 1720

Patent

active

044363974

ABSTRACT:
Various photographic informations such as brightness of an object to be photographed, an iris opening, sensitivity of a film, etc. are applied to an arithmetic operation circuit in the form of digital signals. The arithmetic operation circuit calculates an optimum shutter speed, and digital code bits representing the shutter speed is decoded by a decoder and then applied to luminous digits. A display control circuit is provided for sequentially operating the luminous digits whereby the display digits are sequentially turned on or off to display the photographic informations or to give an alarm to a user of the camera.

REFERENCES:
patent: 4040067 (1977-08-01), Kondo
patent: 4095243 (1978-06-01), Numata et al.
patent: 4198148 (1980-04-01), Tano

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