Signal processor circuit for endoscope systems of all-pixels rea

Details Signal processor circuit for endoscope systems of all-pixels rea Signal processor circuit for endoscope systems of all-pixels rea

1997-10-15

1999-07-27

Faile, Andrew I.

Television

Special applications

With endoscope

348 69, 348220, 348257, 348689, H04N 518, H04N 5225

Patent

active

059299002

ABSTRACT:
A signal processor circuit which stabilizes a clamp processing of black levels even in an endoscope system of an all-pixels readout type and prevents image qualities from being degraded at a stage to shift from a still image to a moving image in particular. In this signal processor circuit, video signals of all picture elements obtained with a single exposure are read out of a CCD, odd line data is stored into a first memory, even line data is stored into a second memory, and mixed picture element signals are generated by a mixer circuit, whereafter a predetermined image processing is performed by a first DVP. A clamp circuit and an A/D converter are disposed at stages preceding the first and second memories, a through video signal output from the A/D converter is input into the first DVP by way of a selector circuit on the basis of an optical black pulse and a black level clamp signal generated on the basis of the through video signal is fed back to the clamp circuit. Accordingly, the signal processor circuit can perform a favorable clamp processing without using past data stored in the memories.

REFERENCES:
patent: 4701785 (1987-10-01), Willis
patent: 5436656 (1995-07-01), Soga et al.
patent: 5734424 (1998-03-01), Sasaki

Affiliated with

Also associated with

Rating

Signal processor circuit for endoscope systems of all-pixels rea does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Signal processor circuit for endoscope systems of all-pixels rea, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Signal processor circuit for endoscope systems of all-pixels rea will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-884651