Image pickup device with analog-to-digital converter

Details Image pickup device with analog-to-digital converter Image pickup device with analog-to-digital converter

2005-06-01

2009-12-15

Chan, Jason (Department: 2622)

Television

Camera, system and detail

Solid-state image sensor

Reexamination Certificate

active

07633539

ABSTRACT:
In an image pickup device with A/D converters at each column signal line, improvements in the A/D conversion speed and accuracy in image sensors having A/D converters are achieved. In an image pickup device wherein sensing elements are arranged in a matrix and A/D converters are arranged for each column signal line, the A/D converter first retains in its memory unit as an initial value an electric signal corresponding to the signal of the sensing element which is an analog signal, then initiates charge or discharge of the memory unit at a rate corresponding to the size of an input fixed signal, measures the time period from either the charge start time or the discharge start time until the memory unit electric signal becomes equal to the reference signal, and then recognizes the measured time period as a digital value.

REFERENCES:
patent: 4110746 (1978-08-01), Furukawa et al.
patent: 4688017 (1987-08-01), Huebner et al.
patent: 5880691 (1999-03-01), Fossum et al.
patent: 6133862 (2000-10-01), Dhuse et al.
patent: 2002/0154233 (2002-10-01), Yoshimura et al.
patent: 55-008104 (1980-01-01), None
patent: 55-8104 (1980-01-01), None
patent: 55-039455 (1980-03-01), None
patent: 59-202724 (1984-11-01), None
patent: 5-028129 (1993-02-01), None
patent: 5-048460 (1993-02-01), None
patent: 5-48460 (1993-02-01), None
patent: 5-219452 (1993-08-01), None
patent: 5-78041 (1993-10-01), None
patent: 7-193507 (1995-07-01), None
patent: 2002-027331 (2002-01-01), None
patent: 2002-33962 (2002-01-01), None

Affiliated with

Also associated with

Rating

Image pickup device with analog-to-digital converter does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Image pickup device with analog-to-digital converter, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Image pickup device with analog-to-digital converter will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4145749