Pulse or digital communications – Bandwidth reduction or expansion – Television or motion video signal
Reexamination Certificate
2005-09-06
2005-09-06
An, Shawn S. (Department: 2613)
Pulse or digital communications
Bandwidth reduction or expansion
Television or motion video signal
C375S240120, C375S240150, C375S240200, C375S240250, C375S240260, C375S240240, C375S240030, C348S699000, C382S233000, C382S234000, C382S236000, C382S238000, C382S250000
Reexamination Certificate
active
06940906
ABSTRACT:
Data of both MPEG-2 and MPEG-4 is generated simultaneously with a small circuit scale and a small power consumption. A moving picture encoding apparatus for encoding a moving picture through motion-compensated inter-frame prediction has: a MPEG-2 encoding unit including a motion vector estimator, a frame memory, a forward prediction circuit, a bidirectional prediction circuit, a prediction selection circuit, an intra-frame encoding circuit and a local decoding circuit; a MPEG-4 encoding unit including a frame extraction circuit for extracting a predetermined MPEG-2 frame and a transcoder for encoding the extracted frame; a motion vector calculator calculating a motion vector to be used for MPEG-4 prediction from a motion vector to be used for MPEG-2 prediction; and a prediction mode controller controlling the prediction mode of the MPEG-2 encoding unit in such that the MPEG-2 prediction mode becomes coincident with the MPEG-4 prediction mode.
REFERENCES:
patent: 5729293 (1998-03-01), Keesman
patent: 5940130 (1999-08-01), Nilsson et al.
patent: 6466623 (2002-10-01), Youn et al.
patent: 2001-285875 (2001-10-01), None
Shanableh et al. “Heterogeneous Video Transcoding to Lower Spatio-Temporal Resolutions and Different Encoding Formats,” IEEE Transactions on Multimedia 2:101-110 (2000).
Nakamura Taku
Takahashi Masaru
An Shawn S.
Townsend and Townsend / and Crew LLP
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