Process for changing the resolution of MPEG bitstreams, and...

Pulse or digital communications – Bandwidth reduction or expansion – Television or motion video signal

Reexamination Certificate

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Details

C375S240210

Reexamination Certificate

active

10075087

ABSTRACT:
A process and a system is described for generating an MPEG output bitstream starting from an MPEG input bitstream. The output bitstream has a resolution modified with respect to the resolution of the input bitstream. In the input bitstream, first portions that substantially do not affect and second portions that do affect resolution variation are distinguished. The second portions are then subjected to a function of modification of the resolution obtained by filtering the second portions in a domain of the discrete cosine transform, and then are transferred to the output bitstream. A corresponding computer program product is also provided.

REFERENCES:
patent: 5144424 (1992-09-01), Savatier
patent: 5675387 (1997-10-01), Hoogenboom et al.
patent: 5724475 (1998-03-01), Kirsten
patent: 5748240 (1998-05-01), Carr et al.
patent: 5920353 (1999-07-01), Diaz et al.
patent: 5926573 (1999-07-01), Kim et al.
patent: 6058143 (2000-05-01), Golin
patent: 6181711 (2001-01-01), Zhang et al.
patent: 6259741 (2001-07-01), Chen et al.
patent: 6445828 (2002-09-01), Yim
patent: 6498965 (2002-12-01), Matsumoto et al.
patent: 6590938 (2003-07-01), Azadegan et al.
patent: 6647061 (2003-11-01), Panusopone et al.
patent: 2002/0003838 (2002-01-01), Takahashi et al.
patent: 2002/0196853 (2002-12-01), Liang et al.
patent: WO 00/21300 (2000-04-01), None
patent: WO 00/51357 (2000-08-01), None
Adaptive motion-vector resampling for compressed video downscaling; Shen et al.;Circuits and Systems for Video Technology, IEEE Transactions on vol. 9, Issue 6, Sep. 1999 pp. 929-936; Digital Object Identifier 10.1109/76.785730 □□.
Zhu, W. et al., “CIF-to-QCIF Video Bitstream Down-Conversion in the DCT Domain,”Bell Labs Technical Journal, 3(3):21-29, Jul.-Sep. 1998.

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