High-efficient coding apparatus for video signal

Details High-efficient coding apparatus for video signal High-efficient coding apparatus for video signal

1991-06-21

1993-07-13

Kostak, Victor R.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358135, H04N 7137

Patent

active

052278778

ABSTRACT:
The invention provides a high-efficient coding apparatus for video signal which is intended to control a quantizing step width finely depending on the quality of a inputted image. The coding apparatus is designed to obtain an average value of prediction errors at blocks, each block on which the orthogonal transform is carried out and to define the upper limit of a quantizing step width output from the quantizing step width control circuit depending on the average value. It results in making it possible to finely control the quantizing step width particularly based on each part of the image from a background to a dynamic area.

REFERENCES:
patent: 4125861 (1978-11-01), Mounts et al.
patent: 4636856 (1987-01-01), Starck
patent: 4821119 (1989-04-01), Gharavi
patent: 4847866 (1989-07-01), Jones et al.
patent: 5038209 (1991-08-01), Hang
patent: 5072295 (1991-12-01), Murakami et al.
Vogel, "Videobild auf der Datenleitung," Funkschau, vol. 26, pp. 60-63, 1988.

Affiliated with

Also associated with

Rating

High-efficient coding apparatus for video signal does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with High-efficient coding apparatus for video signal, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and High-efficient coding apparatus for video signal will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2316494