Video image tube highlight suppression circuit

Details Video image tube highlight suppression circuit Video image tube highlight suppression circuit

1978-08-10

1980-02-26

Murray, Richard

Facsimile and static presentation processing

Facsimile

Recording apparatus

358 74, H04N 519, H04N 916

Patent

active

041908651

ABSTRACT:
A suppression circuit processes the video signal from an image pickup tube and develops a control signal indicative of the time duration of the illumination highlights. The control signal is coupled to the normal beam current supply circuit to automatically increase the beam current in the presence of an illumination highlight to force the recharging of the target to cathode potential in the area of the highlight. In a color camera, only one of the three camera tube signals need be used for the highlight detection and generation of the control signal. The control signal may be used for increasing the beam current in each of the three tubes independently.

REFERENCES:
patent: 3610823 (1971-10-01), Haenen et al.
patent: 3764738 (1973-10-01), Zettl et al.
patent: 3955116 (1976-05-01), van den Berg
patent: 3975657 (1976-08-01), Sato et al.
patent: 4025955 (1977-05-01), Grallien et al.

Affiliated with

Also associated with

Rating

Video image tube highlight suppression circuit does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Video image tube highlight suppression circuit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Video image tube highlight suppression circuit will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2115539