Television – Camera – system and detail – Optics
Reissue Patent
2005-08-09
2005-08-09
Garber, Wendy R. (Department: 2612)
Television
Camera, system and detail
Optics
C348S623000, C348S627000, C348S229100, C348S221100, C348S230100, C348S296000, C348S297000, C348S299000, C348S363000
Reissue Patent
active
RE038771
ABSTRACT:
An exposure controller comprises a discharge pulse calculation circuit for calculating a discharge pulse count to be output to a solid-state image pickup device within one field period, and a coring circuit for defining the quotient obtained from the discharge pulse count divided by a predetermined setting value and plus 1 as a coring value. In an electronic camera system incorporating an electronic iris, when one discharge pulse changes, the amount of change in the luminance level of an image signal becomes larger as an exposure time becomes shorter, whereby hunting is prevented from occurring at the convergent point of the luminance level, and an exposure controller which is compact and has excellent characteristics can be embodied.
REFERENCES:
patent: 3818494 (1974-06-01), Tanikoshi et al.
patent: 4192588 (1980-03-01), Wagensonner et al.
patent: 4378146 (1983-03-01), Suzuki et al.
patent: 4638366 (1987-01-01), Yoshimura et al.
patent: 4734777 (1988-03-01), Okino et al.
patent: 4805024 (1989-02-01), Suzuki et al.
patent: 4969045 (1990-11-01), Haruki et al.
patent: 5059793 (1991-10-01), Miyamoto et al.
patent: 5093716 (1992-03-01), Kondo et al.
patent: 5144540 (1992-09-01), Hayes
patent: 5233428 (1993-08-01), Alford et al.
patent: 5638120 (1997-06-01), Mochizuki et al.
patent: 5831676 (1998-11-01), Takahashi et al.
patent: 548975 (1993-02-01), None
patent: 5-344415 (1993-12-01), None
patent: 6-261248 (1994-09-01), None
patent: 8-321986 (1996-12-01), None
Ishiguro Keizo
Shibuya Fuminori
Garber Wendy R.
Hannett James M.
Matsushita Electric - Industrial Co., Ltd.
Stevens Davis Miller & Mosher LLP
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