Television – Bandwidth reduction system – Data rate reduction
Patent
1995-11-28
1998-08-11
Chin, Tommy P.
Television
Bandwidth reduction system
Data rate reduction
348584, 348598, 375372, H04N 712, H04N 1112, H04N 1104, H04N 974
Patent
active
057934312
ABSTRACT:
A method is provided for encoding of digital video signal segments which are interleaved to form a single system stream (video STD plus audio STD). In order to enable seamless joining of the segments, control of the video system layer buffer loading is related to the loading of the video layer buffer (VBV occupancy). Starting from an idealised match at the point the first picture is to be read out of the decoder buffer, the point at which the first picture is to be read out of the system layer buffer is adjusted by an amount determined by the predicted duration of the segment and the point at which the last frame of the segment is due to be read out. The adjustment prevents possible overlap of segment timing values derived initially from the idealised match case. The technique has particular application to interactive multimedia applications where real time splicing of video clips is required with minimal visual discontinuity.
REFERENCES:
patent: 5534929 (1996-07-01), Tanaka
patent: 5534944 (1996-07-01), Egawa et al.
patent: 5561466 (1996-10-01), Kiriyama
patent: 5565923 (1996-10-01), Zdepski
Chin Tommy P.
Diep Nhon T.
Gathman Laurie E.
U.S. Philips Corporation
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