Residual clamp error compensation circuit

Details Residual clamp error compensation circuit Residual clamp error compensation circuit

1980-04-14

1981-11-17

Richardson, Robert L.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358 21V, H04N 516

Patent

active

043014747

ABSTRACT:
An apparatus for matching the blanking levels of two television video signals is disclosed. When the vertical interval reference signal or any other signal (e.g., sync) is inserted on a program video signal their blanking levels should be matched. The apparatus described accomplishes this by matching the blanking level of the signal being inserted to that of the program video. The match is produced by sampling the residual clamping error of a slow clamp on the program channel and adding it to the signal being inserted. Therefore, the noise which would have been added to the program video is added to the inserted signal instead and therefore will not be visible in the television picture.

REFERENCES:
patent: 3619495 (1971-11-01), Ito et al.

Affiliated with

Also associated with

Rating

Residual clamp error compensation 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 Residual clamp error compensation circuit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Residual clamp error compensation circuit will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1295098