Television – Bandwidth reduction system – Data rate reduction
Patent
1994-07-29
1995-12-26
Britton, Howard W.
Television
Bandwidth reduction system
Data rate reduction
348401, 348402, 348412, 348413, 348416, 348419, 348423, 348715, H04N 750
Patent
active
054792126
ABSTRACT:
According to the picture data coding apparatus of the present invention, the picture data storage unit stores each frame inputted from the pre-process unit, and the frame memory stores the latest-transmitted decoded frame. The frame selection unit judges whether or not a frame under transmission can be displayed. If the frame has been judged to be incapable of being displayed, the frame selection unit judges whether or not each frame stored in the picture data storage unit 103 can be displayed or not, and selects the smallest numbered frame among frames which have been judged to be capable of being displayed. The coding unit predictive codes the selected frame by using the latest-transmitted frame stored in the frame memory 131 as a reference frame, thereby outputting it to the transmission buffer 127. These features can minimize frame skipping even when a frame under transmission becomes incapable of being displayed due to a burst error.
REFERENCES:
patent: 5260783 (1993-11-01), Dixit
patent: 5386234 (1995-01-01), Veltman
"A Study on Control Method for Low Rate Video Coding", The Vernal National Convention on the Electric Information Communication in 1990 (with partial English translation).
Kurobe Akio
Masaki Shoichi
Britton Howard W.
Matsushita Electric - Industrial Co., Ltd.
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