Television – Image signal processing circuitry specific to television – Gray scale transformation
Reexamination Certificate
2006-08-15
2006-08-15
Hsia, Sherrie (Department: 2622)
Television
Image signal processing circuitry specific to television
Gray scale transformation
C348S572000, C348S691000
Reexamination Certificate
active
07092039
ABSTRACT:
A calibration device for a video circuit input stage comprises an analog-to-digital converter and an input capacitor constantly discharged by a power source and recharged by a charging circuit by means of a first and a second charging current. The charging circuit is controlled by a central processing unit receiving an estimate of the variation between the converter's output code and a clamp value.
REFERENCES:
patent: 4831378 (1989-05-01), Baars et al.
patent: 5731771 (1998-03-01), Chesneau
patent: 6049355 (2000-04-01), Kameyama
patent: 6118830 (2000-09-01), Thies et al.
patent: 6492921 (2002-12-01), Kunitani et al.
patent: 0 926 887 (1999-06-01), None
patent: 11-146229 (1999-05-01), None
de Guzman Dennis M.
Hsia Sherrie
Jorgenson Lisa K.
Seed IP Law Group PLLC
STMicroelectronics S.A.
LandOfFree
Calibration device for a video input stage does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Calibration device for a video input stage, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Calibration device for a video input stage will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3653695