Photometer, image sensing device, photometric method,...

Details Photometer, image sensing device, photometric method,... Photometer, image sensing device, photometric method,...

2005-05-31

2005-05-31

Perkey, W. B. (Department: 2851)

Photography

Exposure control circuit

Having plural photocells

C348S362000, C356S222000

Reexamination Certificate

active

06901218

ABSTRACT:
The present invention provides a photometer for making the photometry that can deal with various back light situations. For this purpose, a screen is two-dimensionally divided into plural areas, whereby one-dimensional projection data is calculated from the brightness data acquired from plural areas, and the maximum value of the calculated one-dimensional projection data is detected. Thus, the exposure compensation is made based on the detected maximum value.

REFERENCES:
patent: 5450163 (1995-09-01), Iwasaki
patent: 5703644 (1997-12-01), Mori et al.
patent: 06-225205 (1994-08-01), None
patent: 09-184965 (1997-07-01), None
patent: 11-190816 (1999-07-01), None
patent: 2002-296635 (2002-10-01), None
English Abstract for JPA 2002-296635.
Partial Translation of JPA 2002-296635.
English Abstract for JPA 06-225205.
English Abstract for JPA 09-184965.
English Abstract for JPA 11-190816.

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