Solid-state image-pickup device with column-line amplifiers...

Details Solid-state image-pickup device with column-line amplifiers... Solid-state image-pickup device with column-line amplifiers...

2006-11-27

2008-10-07

Epps, Georgia Y. (Department: 2878)

Radiant energy

Photocells; circuits and apparatus

Photocell controlled circuit

C250S208100, C348S302000

Reexamination Certificate

active

07432493

ABSTRACT:
The levels of the power supply and the ground are kept constant against a parasitic resistance by keeping the constant current of an amplifier irrespective of the size of a pixel signal and the gain of the amplifier in this case in an image signal reading circuit system having the amplifier arranged to each column. The amplifier has a limiter at an output terminal thereof which limits an output voltage of the amplifier to a range for keeping the constant consumption-current.

REFERENCES:
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patent: 5978025 (1999-11-01), Tomasini et al.
patent: 6037577 (2000-03-01), Takanaka et al.
patent: 6963371 (2005-11-01), Sakurai et al.
patent: 2002/0054227 (2002-05-01), Hashimoto
patent: 05-207220 (1993-08-01), None
patent: 2001-230974 (2001-08-01), None
patent: 2001-257938 (2001-09-01), None
patent: 2004-312785 (2004-11-01), None

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