Motion video signal processing for recording or reproducing – Local trick play processing – With randomly accessible medium
Patent
1996-03-28
1999-03-23
Tran, Thai
Motion video signal processing for recording or reproducing
Local trick play processing
With randomly accessible medium
386 82, 386111, H04N 5783
Patent
active
058871101
ABSTRACT:
A video data playback system for reproducing requested video data by switching coded video data to be reproduced between normal playback coded video data and fast playback coded video data according to a requested playback mode, where the normal playback coded video data are encoded by a first video coding scheme using both intra-frame coding and inter-frame coding, while the fast playback coded video data are encoded by a second video coding scheme using only intra-frame coding and having a playback bit rate and a frame rate identical to those of the normal playback coded video data. The normal playback coded video data can be obtained by encoding the original video data first, then the fast playback coded video data can be obtained by encoding selectively decoded normal playback coded video data. Alternatively, the normal and fast playback coded video data can be obtained by synchronizing start and end of encoding by the first video coding scheme and encoding by the second video coding scheme.
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Itoh Kouichi
Kawaguchi Tomoaki
Kimiyama Hiroyuki
Maruyama Mitsuru
Mori Tatsuo
Nippon Telegraph & Telephone Corp.
Tran Thai
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