发明名称 IMAGING UNIT
摘要 PROBLEM TO BE SOLVED: To prevent exposure from being temporarily changed extremely and to perform appropriate exposure control by controlling the exposure of an area estimated as the area where a main subject is present when an unintended subject whose luminance is extremely high or low enters an imaging screen. SOLUTION: A luminance detection circuit 13 detects luminance in the imaging screen, and the variation of the luminance is obtained by a luminance variation detection circuit 14 on the basis of the detected luminance value. When the variation of the luminance is equal to or above a predetermined value, it is controlled to become an appropriate exposure value by changing an exposure system by an exposure control system changing circuit 15. COPYRIGHT: (C)2006,JPO&NCIPI
申请公布号 JP2005331590(A) 申请公布日期 2005.12.02
申请号 JP20040147838 申请日期 2004.05.18
申请人 CANON INC 发明人 SENOO ISAMU
分类号 G03B7/091;H04N5/235;H04N101/00;(IPC1-7):G03B7/091 主分类号 G03B7/091
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