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...

2006-11-28

2006-11-28

Epps, Georgia (Department: 2878)

Radiant energy

Photocells; circuits and apparatus

Photocell controlled circuit

C250S2140AG, C348S302000

Reexamination Certificate

active

07141775

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:
patent: 4233632 (1980-11-01), Akiyama
patent: 5258968 (1993-11-01), Matsuda et al.
patent: 5978025 (1999-11-01), Tomasini et al.
patent: 6037577 (2000-03-01), Tanaka et al.

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