发明名称 Exposure control device in a camera
摘要 An exposure control device in a camera comprises power supply circuit means for producing a temperature signal representative of an amount proportional to the absolute temperature, means for producing a first digital data representative of the film speed, digital-analog converting means for producing a first analog output depending on the ambient temperature from the first digital data and the temperature signal, photometering means having means for producing a second analog output corresponding to the brightness of an object to be photographed and means for adding the second analog output to the first analog output and preparing a photometering output, analog-digital converting means for preparing a second digital data independent on the ambient temperature from the temperature signal and the photometering output, and means for determining the exposure in accordance with the second digital data.
申请公布号 US4668069(A) 申请公布日期 1987.05.26
申请号 US19860860783 申请日期 1986.05.08
申请人 NIPPON KOGAKU K. K. 发明人 HASEGAWA, HIROSHI
分类号 G03B7/091;(IPC1-7):G03B7/08 主分类号 G03B7/091
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