Multiplex communications – Communication techniques for information carried in plural... – Adaptive
Patent
1997-03-21
2000-04-18
Pham, Chi H.
Multiplex communications
Communication techniques for information carried in plural...
Adaptive
370537, 370538, H04N 700
Patent
active
060523840
ABSTRACT:
Techniques for determining an output rate for a bit stream, the output rate being determined by applying information read from the bit stream to a model of a receiver for the bit stream. The techniques are employed to construct a statistical multiplexer that multiplexes varying bit-rate MPEG-2 bit streams onto a satellite up-link. Minimum and maximum output rates for each MPEG-2 bit stream are determined such that neither a queue for the bit stream in the multiplexer nor the bit stream's decoder will underflow or overflow. The rates with regard to the decoder are determined using timing information read from the bit stream and a general model of an MPEG-2 decoder. The multiplexer first allocates each bit stream its minimum bandwidth and then allocates any remaining bandwidth to the bit streams in proportion to the difference between the minimum and maximum output rates for the bit streams, with no bit stream receiving more than its maximum output rate. If there is not enough bandwidth to give every bit stream its minimum rate, bit rates are allocated according to priorities assigned to the bit streams.
REFERENCES:
patent: 4636858 (1987-01-01), Hague et al.
patent: 5159447 (1992-10-01), Haskell et al.
patent: 5216503 (1993-06-01), Paik et al.
patent: 5461619 (1995-10-01), Citta et al.
patent: 5479498 (1995-12-01), Brandman et al.
patent: 5506844 (1996-04-01), Rao
patent: 5537148 (1996-07-01), Fujinami
patent: 5543853 (1996-08-01), Haskell et al.
patent: 5550589 (1996-08-01), Shiojiri et al.
patent: 5561791 (1996-10-01), Mendelson et al.
patent: 5566208 (1996-10-01), Balakrishnan
patent: 5594729 (1997-01-01), Kanakia et al.
patent: 5598415 (1997-01-01), Nuber et al.
patent: 5650825 (1997-07-01), Naimpally et al.
patent: 5652627 (1997-07-01), Allen
patent: 5677969 (1997-10-01), Auyeung et al.
patent: 5686963 (1997-11-01), Uz et al.
patent: 5708664 (1998-01-01), Budge et al.
patent: 5719632 (1998-02-01), Hoang et al.
patent: 5835493 (1998-11-01), Magee et al.
patent: 5838686 (1998-11-01), Ozkan
patent: 5862140 (1999-01-01), Shen et al.
patent: 5877812 (1999-03-01), Krause et al.
Background Information on MPEG-1 and MPEG-2 Television Compression, found in Nov. 1996 at the URL http://www.cdrevolution.com/text/mpeginfo.htm.
Video Transmission Over Broadband Networks, found in URL http://www-dse.doc.ic.ac.uk/.about.nd/surprise96/journal/vol4/arad/report. html.
DiviCom MPEG-2 ReMultiplexer, Divicom, Inc., Milpitas, CA.
CLI Techno Trends, The Next Step in Digital Broadcast: Compression Labs, Inc. 1996.
"Statistical Multiplexing of Multiple MPEG-2 Video Programs in a Single Channel", Mike Perkins & David Arnstein, SMPTE Journal, Sep. 1995, p. 596.
"Multiplexing of Variable Rate Encoded Streams", Barry G. Haskell & Amy R. Reibman, IEEE Transactions on Circuits and Systems for Video Technology, vol. 4, No. 4, Aug. 1994, p. 417.
"Constraints on Variable Bit-Rate Video for ATM Networks", Barry G. Haskell & Amy R. Reibman, IEEE Transactions on Circuits and Systems for Video Technology, vol. 2, No. 4, Dec. 1992, p. 361.
Birch Christopher H.
Huang Si Jun
Bardhardt III Hubert J.
Duong Frank
Gardner Kelly
Massaroni Kenneth M.
Pham Chi H.
LandOfFree
Using a receiver model to multiplex variable-rate bit streams ha does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Using a receiver model to multiplex variable-rate bit streams ha, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Using a receiver model to multiplex variable-rate bit streams ha will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2342239