Pulse or digital communications – Bandwidth reduction or expansion – Television or motion video signal
Reexamination Certificate
2004-10-29
2010-11-02
Rao, Andy S (Department: 2621)
Pulse or digital communications
Bandwidth reduction or expansion
Television or motion video signal
C375S240280
Reexamination Certificate
active
07826537
ABSTRACT:
A scalable layered video coding scheme that encodes video data frames into multiple layers, including a base layer of comparatively low quality video and multiple enhancement layers of increasingly higher quality video, adds error resilience to the enhancement layer. Unique resynchronization marks are inserted into the enhancement layer bitstream in headers associated with each video packet, headers associated with each bit plane, and headers associated with each video-of-plane (VOP) segment. Following transmission of the enhancement layer bitstream, the decoder tries to detect errors in the packets. Upon detection, the decoder seeks forward in the bitstream for the next known resynchronization mark. Once this mark is found, the decoder is able to begin decoding the next video packet. With the addition of many resynchronization marks within each frame, the decoder can recover very quickly and with minimal data loss in the event of a packet loss or channel error in the received enhancement layer bitstream. The video coding scheme also facilitates redundant encoding of header information from the higher-level VOP header down into lower level bit plane headers and video packet headers. Header extension codes are added to the bit plane and video packet headers to identify whether the redundant data is included.
REFERENCES:
patent: 6263022 (2001-07-01), Chen et al.
patent: 6445742 (2002-09-01), Yoo et al.
patent: 6498865 (2002-12-01), Brailean et al.
patent: 7155657 (2006-12-01), Bordes et al.
R. Talluri, “Error-Resilient Video Coding in the ISO MPEG-4 Standard,” IEEE Communications Magazine, pp. 112-119, Jun. 1998.
Y. Wang, “Error Control and Concealment for Video Communication: A Review,” Proceedings of the IEEE, vol. 86, No. 5, pp. 974-997, May 1998.
E. N. Gilbert, “Capacity of a Burst-Noise Channel,” The Bell System Technical Journal, pp. 1253-1265, Sep. 1960.
M. Yajnik et al., “Measurement and Modelling of the Temporal Dependence in Packet Loss,” UMASS CMPSCI Technical Report #98-78, pp. 1-22, 1999.
Li Shipeng
Wu Feng
Yan Rong
Zhang Ya-Qin
Lee & Hayes PLLC
Microsoft Corporation
Rao Andy S
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