Still camera system usable for both film and electrophotography

Details Still camera system usable for both film and electrophotography Still camera system usable for both film and electrophotography

1987-12-08

1989-05-16

Chin, Tommy P.

Facsimile and static presentation processing

Facsimile

Recording apparatus

358229, H04N 5225

Patent

active

048314501

ABSTRACT:
A still camera system comprises a camera body together with either a back for film or a still video back which are selectively mountable onto the camera body. When the still video back is mounted, a part of light incident on an image pickup CCD is directed to a photoelectric conversion element provided in the still video back. An output current of the photoelectric conversion element is converted into a voltage by a conversion circuit, and the voltage is transmitted to the camera body. When the back for film is mounted, light reflected from the film is received by a photoelectric conversion element provided in the camera body, and an output current in the photoelectric conversion element is converted into a voltage by a conversion circuit in the camera body. Based on an output of an operation switch responsive to the mounting of the still video back onto the camera body, one of the output voltages in the two conversion circuits is selected by a selection switch, the selected voltage is integrated by an integration circuit, and, when an integrated value reaches a predetermined level, a disable signal is transmitted to a flash unit. Flash control is thus effected both when the still video back is mounted or when the back for film is mounted.

REFERENCES:
patent: 4499504 (1985-02-01), Edakubo

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