1981-08-31
1983-02-01
Gellner, Michael L.
354 50, 354139, 354145, G03B 7085, G03B 1505
Patent
active
043712436
ABSTRACT:
A camera detects which of a number of operating modes is dialed into a flash unit by sensing the current level produced by a source. In response to dialing of a daylight EE mode, the camera measures the brightness of the object to be photographed and conforms the diaphragm aperture to a preselected shutter speed. In one flash mode the flash unit transmits desired aperture and shutter speed data suitable for flash and the camera automatically responds. In another mode, the shutter speed is set into the camera and the camera automatically controls the diaphragm aperture on the basis of data transmitted by the flash unit.
REFERENCES:
patent: 3714872 (1973-02-01), Mashimo et al.
patent: 3821750 (1974-06-01), Murakami et al.
patent: 4016575 (1977-04-01), Uchiyama et al.
patent: 4034384 (1977-07-01), Tsunekawa et al.
patent: 4047194 (1977-09-01), Nakamura et al.
patent: 4126872 (1978-11-01), Yazaki et al.
patent: 4187019 (1980-02-01), Uchiyama et al.
Aizawa Hiroshi
Kwan Stephen C.
Mashimo Yukio
Takishima Yoshiyuki
Uchidoi Masanori
Canon Kabushiki Kaisha
Gellner Michael L.
Texas Instruments Incorporated
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