Pulse or digital communications – Bandwidth reduction or expansion – Television or motion video signal
Patent
1998-02-20
2000-05-02
Le, Vu
Pulse or digital communications
Bandwidth reduction or expansion
Television or motion video signal
348405, 348434, 348446, 348384, H04B 166, H04N 712
Patent
active
060581433
ABSTRACT:
A transcoding method is performed by receiving a first bitstream of compressed image data having identifiable coding parameters. These parameters may relate to the GOP structure of pictures represented in the first bitstream, the size of the pictures represented in the first bitstream, whether the pictures represented in the first bitstream are field or frame pictures, and/or whether the pictures represented in the first bitstream define a progressive or interlaced sequence. First motion information is obtained from the first bitstream, and is used to extrapolate second motion information for a second bitstream of compressed image data. The second bitstream, which has one or more parameters different from the parameters of the first bitstream, is provided as a transcoded output.
REFERENCES:
patent: 5268751 (1993-12-01), Geiger et al.
patent: 5438368 (1995-08-01), Hutter
patent: 5530484 (1996-06-01), Bhatt et al.
patent: 5537440 (1996-07-01), Eyuboglu et al.
patent: 5541852 (1996-07-01), Eyuboglu et al.
patent: 5544266 (1996-08-01), Koppelmans et al.
patent: 5708473 (1998-01-01), Mead
patent: 5805224 (1998-09-01), Keesman et al.
PCT Search Report.
Stottelder, "Bridging Standards For Digital Television Broadcast", Aug. 3, 1995, pp. 626-633.
Shen, "Adaptive Motion Vector Resampling for Compressed Video Down-Scaling", Oct. 26, 1997, pp. 771-774.
Duffy Vincent E.
Kurdyla Ronald H.
Le Vu
Philippe Gias
Thomson Licensing S.A.
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