Outline enchancing device

Details Outline enchancing device Outline enchancing device

1992-03-25

1993-09-21

Kostak, Victor R.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

H04N 514

Patent

active

052473619

ABSTRACT:
An outline enhancing device for enhancing an outline of an image formed by a video signal having a rising and falling slope portions and a flat portion includes an enhancing signal producing circuit for producing an enhancing signal having a first, a second, and a third enhancing waveforms which wavelengths are the same as those of three portions of the video signal, respectively. A delay circuit is provided for delaying the video signal to be synchronized with the enhancing signal. A subtracter is further provided for subtracting the enhancing signal from the synchronized video signal such that three enhancing wavesforms are exactly superimposed on the rising slope, the falling slope and the flat portions, respectively, without any interference to the neighboring slopes or portion. As a result of such subtraction, the gradients of the rising and falling slopes are made large while the flat portion is extended. Thus, the outline in the video signal is enhanced without preshoots or overshoots around the outline.

REFERENCES:
patent: 4758891 (1988-07-01), Hitchcock et al.
patent: 4912551 (1990-03-01), Ozaki
patent: 5151787 (1992-09-01), Park

Affiliated with

Also associated with

Rating

Outline enchancing device does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1054250