Video coding device

Details Video coding device Video coding device

1995-04-05

1998-02-24

Britton, Howard W.

Television

Bandwidth reduction system

Data rate reduction

348416, H04N 736, H04N 750

Patent

active

057215880

ABSTRACT:
The prediction error value calculated by a motion estimating portion is used for selecting the frame or field orthogonal transform coding mode. The frame prediction error value EFr and the field prediction error value EFi are calculated by the motion estimating portion and entered into a comparator of an orthogonal transform mode selecting portion which in turn compares them with each other and generates an orthogonal transform mode selecting signal TC. The use of the prediction error values for selecting the orthogonal transform mode makes it possible to reduce the size of the necessary hardware and saves much time of data processing necessary for judgment of the orthogonal transform mode selection.

REFERENCES:
patent: 5091782 (1992-02-01), Krause
patent: 5317397 (1994-05-01), Odaka
patent: 5412435 (1995-05-01), Nakajima
"Adaptive frame/field motion compensated video coding", Puri et al, Signal Processing: Image Communication, vol. 5, No. 1/2, 1 Feb. 1993, pp. 39 through 58.

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