High-efficiency encoder and video information recording/reproduc

Details High-efficiency encoder and video information recording/reproduc High-efficiency encoder and video information recording/reproduc

1993-03-12

1996-01-30

Britton, Howard W.

Facsimile and static presentation processing

Facsimile

Recording apparatus

348402, H04N 5917

Patent

active

054884829

ABSTRACT:
In a high-efficiency encoder which performs motion-compensation prediction, an intra-field is set every n fields. The presence of a scene change is detected. When a scene change occurs, a reference picture of motion-compensation prediction is switched, or the field immediately after the scene change is set as an intra-field. In intra encoding mode, a digital video signal is encoded after dividing the digital video signal into subbands, and in predictive encoding mode, the digital video signal is encoded without dividing it into subbands.

REFERENCES:
patent: 4689673 (1987-08-01), Ohki et al.
patent: 4807053 (1989-02-01), Heijnemans
patent: 4827338 (1989-05-01), Gerard
patent: 5073821 (1991-12-01), Juri
patent: 5089888 (1992-02-01), Zdepski
patent: 5231487 (1993-07-01), Hurley

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