Clamping apparatus and gain control apparatus

Details Clamping apparatus and gain control apparatus Clamping apparatus and gain control apparatus

1990-03-22

1991-01-01

Shoop, Jr., William M.

Coded data generation or conversion

Converter compensation

341155, H03M 1300

Patent

active

049821911

ABSTRACT:
In converting an analog signal to a digital signal, a clamping apparatus is capable of adjusting the DC level of the analog signal to a predetermined value, and a gain control apparatus is capable of adjusting the amplitude of the analog signal to a predetermined value. Each of such clamping apparatus and gain control apparatus is adapted for use particularly in digitizing a video signal and comprises: a detection circuit for detecting the DC level or the amplitude of the signal digitized by an analog-digital converter; a signal conversion circuit for outputting, in accordance with the detection signal, a three-state signal indicative of a high voltage, a lower voltage or a high impedance; an integrator for integrating such three-state signal; and a feedback loop for controlling, by the integrated signal, the analog signal to be inputted to the analog-digital converter.

REFERENCES:
patent: 3882488 (1975-05-01), Kosakowski et al.
patent: 4584558 (1986-04-01), Mascher et al.
patent: 4590459 (1986-05-01), Lanz et al.
patent: 4903023 (1990-02-01), Evans et al.

Affiliated with

Also associated with

Rating

Clamping apparatus and gain control apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Clamping apparatus and gain control apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Clamping apparatus and gain control apparatus will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1999480