Pulse or digital communications – Bandwidth reduction or expansion – Television or motion video signal
Reexamination Certificate
2007-08-28
2007-08-28
Philippe, Gims (Department: 2621)
Pulse or digital communications
Bandwidth reduction or expansion
Television or motion video signal
C382S251000
Reexamination Certificate
active
10421629
ABSTRACT:
A method and device for coding of digital video sequence, wherein an indication of quantization parameter (QP) is provided in the encoded bit-stream for decoding purposes. The QP related information is indicated by introducing a sequence level quantization parameter value SQP. More specifically, instead of coding the absolute values of picture/slice QPs, an indication of the difference ΔQP between the sequence level quantization parameter SQP and the picture/slice QP is provided. This eliminates the need to transmit a full QP for every picture/slice, and enables a statistically smaller difference value to be transmitted, thus providing a reduction in transmission bit-rate. The difference value is subsequently used in a corresponding decoder to reconstruct the picture/slice QP.
REFERENCES:
patent: 5054103 (1991-10-01), Yasuda et al.
patent: 5144426 (1992-09-01), Tanaka et al.
patent: 5231484 (1993-07-01), Gonzales et al.
patent: 5237410 (1993-08-01), Inoue
patent: 5715009 (1998-02-01), Tahara et al.
patent: 5751358 (1998-05-01), Suzuki et al.
patent: 6256349 (2001-07-01), Suzuki et al.
patent: 6677868 (2004-01-01), Kerofsky et al.
patent: 2003/0152146 (2003-08-01), Lin et al.
“Joint Model No. 1 (JM-1)”, Doc. JVT-A003, Appendix B; Joint Video Team (JVT) of ISO/IEC MPEG and ITU-T VCEG; Jan. 2002; pp. 1-79.
Nokia Corporation
Philippe Gims
Ware Fressola Van Der Sluys & Adolphson LLP
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