发明名称 PHOTOGRAPHIC INFORMATION INPUT CIRCUIT OF CAMERA
摘要 PURPOSE:To improve the reliability of a camera without increasing the number of input pins by providing a data selector means which selects an output line in response to an input information signal. CONSTITUTION:Pieces of input information from a strobe device 384, reflected light photometer 350, incidence type photometer 354, etc., connected externally to a camera mechanism part 358 are applied through the mechanism 358 to the selector 380 of an input controlling part 360 controlled through a CPU362, and also applied to a current detector 386 as well. Then, the selection of outputs of the selector 380 applied with even measurement input information from the photometric part 378 of the mechanism part 358 is controlled in accordance with the detection information of the detector 386. The selected input information is applied through an A/D converter 382 to the CPU362 to obtain exposure information. Thus, desired information is inputted selectively without increasing the number of input pins of the IC-implemented CPU362, thereby preventing a decrease in the reliability of the camera due to an increase in the number of pins.
申请公布号 JPS5890623(A) 申请公布日期 1983.05.30
申请号 JP19820194507 申请日期 1982.11.08
申请人 CANON KK 发明人 SHINODA NOBUHIKO;SAKURADA NOBUAKI;KAWAMURA MASAHARU;ITOU TADASHI;ITOU FUMIO;MURAKAMI HIROYASU
分类号 G03B7/091;G06F3/02 主分类号 G03B7/091
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