Method of decoding coded video signals

Details Method of decoding coded video signals Method of decoding coded video signals

2007-04-17

2007-04-17

Wong, Allen (Department: 2621)

Pulse or digital communications

Bandwidth reduction or expansion

Television or motion video signal

C375S240000, C375S240010, C375S240120

Reexamination Certificate

active

10321206

ABSTRACT:
The invention relates to a video decoding method for decoding a set of video signals comprising a base layer signal and at least one enhancement layer signal and for supplying a decoded output signal, said decoding method comprising:a first decoding step for decoding the base layer signal and supplying a decoded base layer signal, said first step being associated with a compensating step for motion compensation of a reference image,a second decoding step for decoding the enhancement layer signals and supplying decoded enhancement layer signals,a combining step for combining the decoded base layer signal and the decoded enhancement layer signals to supply said decoded output signal.The decoding method is characterized in that it comprises a selection step for selecting, as a function of a selection signal, the signal from which said reference image is taken, the selection being made from said decoded base layer signal and said decoded output signal. The decoding method thus allows optimum quality to be obtained for the decoded output signal irrespective of the characteristics of the coding which produced said base layer to be decoded.

REFERENCES:
patent: 5818531 (1998-10-01), Yamaguchi et al.
patent: 6173013 (2001-01-01), Suzuki et al.
patent: WO0126381 (2001-04-01), None
I-W Tsei et al; “Hybrid Cell Loss Concealment Methods for MPEG-II-Based Packet Video”, Signal Processing, Image Communication, Elsevier Science Publishers, Amsterdam, NL, vol. 9, Nr. 2, pp. 99-124 XP000638965.
Kuroda Hideo et al; “Variable Bit Rate Video Coding Method”, Electronics & Communications in Japan, Part I, Communications, Scripta Technica, NY, vol. 76, Nr. 4, pp. 35-45, XP000417796.

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