Pulse or digital communications – Bandwidth reduction or expansion – Television or motion video signal
Reexamination Certificate
2005-01-11
2005-01-11
Lee, Young (Department: 2613)
Pulse or digital communications
Bandwidth reduction or expansion
Television or motion video signal
Reexamination Certificate
active
06842484
ABSTRACT:
A method and apparatus for reducing error propagation in digital video signals using random forced intra-refresh of macroblocks. One or more predetermined regions are defined for each digital video frame. Within each predetermined region, a number of macroblocks are selected according to a random permutation of the macroblocks within the region. The selected macroblocks are intra-coded, while the remaining macroblocks are coded according to a standard video compression protocol. This approach provides an efficient method for mitigating error propagation in a decoder. Interior regions may be smaller than exterior regions, providing higher quality for the interior regions, where sensitivity to errors is higher.
REFERENCES:
patent: 5491509 (1996-02-01), Jeong et al.
patent: 5724369 (1998-03-01), Brailean et al.
patent: 6025888 (2000-02-01), Pauls
Steinbach, Eckehard et al. “Standard Compatible Extension of H.263 for Robust Video Transmission in Mobile Environments.”IEEE Transactions on Circuits and Systems for Video Technology.vol. 7, No. 6, Dec. 1997: 872-881.
Liao, Judy Y. et al. “Adaptive Intra Block Update for Robust Transmission of H.263.”IEEE Transactions on Circuits and Systems for Video Technology.vol. 10, No. 1, Feb. 2000: 30-35.
Gandhi Bhavan
Nicozisin David
O'Connell Kevin
Haas Kenneth A.
Lee Young
Motorola Inc.
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