Pulse or digital communications – Bandwidth reduction or expansion – Television or motion video signal
Reexamination Certificate
2005-07-19
2005-07-19
Rao, Andy (Department: 2613)
Pulse or digital communications
Bandwidth reduction or expansion
Television or motion video signal
C375S240250
Reexamination Certificate
active
06920179
ABSTRACT:
A video signal is encoded in a progressive video coder so as to generate a progressive coded video bit stream for transmission over a heterogeneous network. The progressive coded video bit stream is configured so as to be decodable at any one of a series of increasing bit rates up to a maximum bit rate, depending on which of a number of corresponding portions of the progressive coded video bit stream are received by a decoder. Each of the portions is associated with a different bit rate, and one or more of the portions may each also be associated with different values of other parameters such as frame rate, spatial resolution, and peak signal-to-noise ratio. Each of the series of increasing bit rates produces progressively better reconstructed video quality at an output of the decoder. The progressive coded bit stream is transmitted over a first part of the heterogeneous network at a first one of the bit rates. One or more selected portions of the progressive coded video bit stream are then transmitted from the first part of the heterogeneous network to a second part of the heterogeneous network. The selected portions are associated with a second one of the bit rates lower than the first bit rate, and may be selected based on an error detected in the transmission over the first part of the heterogeneous network, and/or a characteristic of the second part of the heterogeneous network. The invention provides efficient bit rate scalability and adaptability and is particularly well-suited for use in conjunction with transmission over heterogeneous wired-to-wireless networks.
REFERENCES:
patent: 6014694 (2000-01-01), Aharoni et al.
patent: 6327392 (2001-12-01), Li
patent: 6460153 (2002-10-01), Chou et al.
patent: 6466698 (2002-10-01), Creusere
patent: 6519284 (2003-02-01), Pesquet-Popescu et al.
K. W. Stuhlmüller et al., “Scalable Internet Video Streaming With Unequal Error Protection,” Packet Video Workshop, New York, pp. 1-8, Apr. 1999.
B. Girod et al., “Packet Loss Resilient Internet Video Streaming,” Visual Communications and Image Processing '99, SPIE, San Jose, CA, 12 pages, Jan. 1999.
C. Leicher, “Hierarchical Encoding of MPEG Sequences Using Priority Encoding Transmission (PET),” Berkeley Technical Report TR-94-058, 59 pages, Nov. 1994.
J. Wen et al., “A Class of Reversible Variable Length Codes For Robust Image and Video Coding,” Proceedings of the IEEE International Conference on Image Processing, Santa Barbara, CA, vol. 2, pp. 65-68, Oct. 1997.
J. Villasenor et al., “Robust Video Coding Algorithms and Systems,” Proceedings of the IEEE, vol. 87, No. 10, pp. 1724-1733, Oct. 1999.
N. Färber et al., “Extensions of ITU-T Recommendation H.324 For Error-Resilient Video Transmission,” IEEE Communications Magazine, pp. 120-128, Jun. 1998.
G. de los Reyes et al., “Video Transmission For Resilience in Wireless Channels,” IEEE International Conference on Image Processing, pp. 338-342, Oct. 1998.
B. Girod et al., “Feedback-Based Error Control for Mobile Video Transmission,” Proceedings of the IEEE, vol. 87, No. 10, pp. 1707-1723, Oct. 1999.
A.E. Mohr et al., “Graceful Degradation Over Packet Erasure Channels Through Forward Error Correction,” Proceedings of the 1999 Data Compression Conference (DCC), Snowbird, Utah, pp. 1-10, 1999.
R. Puri et al., “Multiple Description Source Coding Using Forward Error Correction Codes,” IEEE, pp. 342-346, 1999.
P.G. Sherwood et al., “Error Protection For Progressive Image Transmission Over Memoryless and Fading Channels,” IEEE Transactions on Communications, vol. 46, No. 12, pp. 1555-1559, Dec. 1998.
Anand Raghavan
Lou Hui-Ling
Podilchuk Christine Irene
LandOfFree
Method and apparatus for video transmission over a... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and apparatus for video transmission over a..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for video transmission over a... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3426047