Pulse or digital communications – Bandwidth reduction or expansion – Television or motion video signal
Reexamination Certificate
2007-10-02
2007-10-02
Philippe, Gims (Department: 2621)
Pulse or digital communications
Bandwidth reduction or expansion
Television or motion video signal
C382S236000
Reexamination Certificate
active
09865733
ABSTRACT:
A picture coding method for transmission on a channel at a low bit rate and with a high error rate, for example, a channel with a bit rate less than 100 kbit/s and an error rate greater than 10−6, or even 10−4. The method uses motion estimation coding and divides the picture into a plurality of segments made up of macroblocks. At least for an edge macroblock of a segment, a motion estimation vector is allowed to extend into an adjacent segment. This is particularly advantageous for macroblocks situated top right of the segment if scanning for motion vector estimation is from left to right and top to bottom. Errors caused by estimating motion vectors within segments are avoided and the propagation of coding errors caused by splitting the picture into segments is limited.
REFERENCES:
patent: 5016102 (1991-05-01), Avis
patent: 5469226 (1995-11-01), David et al.
patent: 5838829 (1998-11-01), Kim
patent: 6141448 (2000-10-01), Khansari et al.
patent: 6611561 (2003-08-01), Hannuksela et al.
patent: 0 395 271 (1990-10-01), None
patent: 0 535 746 (1993-04-01), None
International Telecommunication Union: Draft Text of Recommendation H.263 Version 2 “H.263+”—Transmission of Non-Telephone Signals: Video Coding for Low Bit Rate Communication, Jan. 27, 1998, XP002160606.
M. Bierling, “Displacement estimation by Hierarchical Blockmatching” Visual Communications and Image Processing '88, Cambridge, MA, USA Nov. 9-11, 1988, vol. 1001, pt. 2, pp. 942-951, XP000863657.
Alcatel
Philippe Gims
Sughrue Mion Pllc.
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