Process for the adaptative coding and the decoding of a televisi

Details Process for the adaptative coding and the decoding of a televisi Process for the adaptative coding and the decoding of a televisi

1984-03-20

1986-01-28

Britton, Howard W.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358133, H04N 712

Patent

active

045675198

ABSTRACT:
This coding process makes it possible to reduce the information quantity of a television picture. A coding device comprises: a device for detecting the high brightness gradient points; a device detecting, from among the blocks formed from among four consecutive picture points so-called high gradients blocks containing at least one high gradient point; a device for coding points of the high gradient blocks, which carries out a differential coding of the brightness values and a quantification in accordance with a first non-linear scale; a device for coding points of low gradient blocks, which carries out a differential coding and a quantification in accordance with a second non-linear scale, the coding only being carried out for alternate points of the low gradient blocks, a device for decoding points of the high gradient blocks, and a device for decoding points of the low gradient blocks, the brightness values of the uncoded points of the low gradient blocks being reconstituted by linear interpolation on the basis of the decoded brightness values of adjacent points.

REFERENCES:
patent: 3071727 (1963-01-01), Kitsopoulos
patent: 3824590 (1974-01-01), Limb
patent: 4268861 (1981-05-01), Schreiber
IEE Proceedings-F., vol. 127, No. 5, Oct. 1980, pp. 405-409, Stevenage, Herts., GB H. Gharavi: "Bandwidth Compression of Digital Colour . . . ."
IEEE National Telecommunications Conference, Dec. 1-3, 1975, New Orleans, vol. 1, pp. 22-10 a 22-17, IEE, New York, U.S., P. J. Ready et al.
Fernseh-Und Kino-Technik, vol. 37, No. 1, Jan. 1983, pp. 15-20, Berlin, DE, H. Amor: "Quellencodierung der Feinstruckturkomponenten . . . ."

Affiliated with

Also associated with

Rating

Process for the adaptative coding and the decoding of a televisi does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Process for the adaptative coding and the decoding of a televisi, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for the adaptative coding and the decoding of a televisi will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1309577