Stabilization network for a cathode ray tube

Details Stabilization network for a cathode ray tube Stabilization network for a cathode ray tube

1981-03-03

1983-01-25

Richardson, Robert L.

Facsimile and static presentation processing

Static presentation processing

Attribute control

358 29, 358243, 315383, H04N 916

Patent

active

043706746

ABSTRACT:
A stabilization network is disclosed which compensates for variable emission characteristics of a cathode in a television receiver's cathode ray tube. During the receiver's vertical interval, a variable gain video amplifier applies a black level D.C. voltage to the cathode. The resulting cathode current is sensed and compared to a low level reference current. If the cathode current does not equal the reference current, a control signal is applied to the amplifier. The amplifier responds to changing its D.C. output voltage until the cathode current is equal to the reference current. The amplifier also responds to the control signal by altering its gain so that, when a video signal is received, the cathode develops peak white currents of a given value in response to peak white portions of the video signal.

REFERENCES:
patent: 3955212 (1976-05-01), Engel et al.
patent: 4012775 (1977-03-01), Smith
patent: 4070691 (1978-01-01), Smith et al.
patent: 4197557 (1980-04-01), Tuma et al.
patent: 4295166 (1981-10-01), Shanley et al.

Affiliated with

Also associated with

Rating

Stabilization network for a cathode ray tube does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Stabilization network for a cathode ray tube, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Stabilization network for a cathode ray tube will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1626958