Pulse or digital communications – Bandwidth reduction or expansion – Television or motion video signal
Reexamination Certificate
2011-04-19
2011-04-19
Odom, Curtis B (Department: 2611)
Pulse or digital communications
Bandwidth reduction or expansion
Television or motion video signal
C375S240120, C375S240180
Reexamination Certificate
active
07929608
ABSTRACT:
A method of improving the computation speed of the sum of absolute transformed distances (SATD) for different intra-prediction modes is described. Determining the SATD quicker provides the benefits of better coding performance without suffering the drawbacks of longer computation times. The method of reducing intra-prediction and mode decision processes in a video encoder, implements Hadamard transforms with improvements. Hadamard transforms are performed on an original block and predicted blocks and calculations are only performed where coefficients are non-zero thus skipping the coefficients that are zero. Using such an approach, the calculations required for the Vertical Prediction, Horizontal Prediction and DC Prediction are reduced significantly. Thus, the best intra-prediction mode is able to be determined very efficiently.
REFERENCES:
patent: 5594812 (1997-01-01), Boliek et al.
patent: 5699118 (1997-12-01), Bolton
patent: 6272253 (2001-08-01), Bannon et al.
patent: 6614847 (2003-09-01), Das et al.
patent: 6859559 (2005-02-01), Boon et al.
patent: 6882685 (2005-04-01), Malvar
patent: 6990506 (2006-01-01), Sun
patent: 2004/0264575 (2004-12-01), Bjontegaard
patent: 2005/0013367 (2005-01-01), Gallant et al.
patent: 2005/0058356 (2005-03-01), Shen et al.
patent: 2005/0069211 (2005-03-01), Lee et al.
patent: 2005/0207495 (2005-09-01), Ramasastry et al.
patent: 2005/0244063 (2005-11-01), Kwon et al.
patent: 2005/0249277 (2005-11-01), Ratakonda et al.
patent: 2005/0265454 (2005-12-01), Muthukrishnan et al.
patent: 2005/0276330 (2005-12-01), Park et al.
patent: 2005/0281337 (2005-12-01), Kobayashi et al.
patent: 2006/0056719 (2006-03-01), Yu et al.
patent: 2007/0206872 (2007-09-01), Song
Ralf Schafer et al., The Emerging H.264/AVC Standard, Jan. 2003, p. 1-12, EBU Techincal Review.
Iain E G Richardson, H.264 / MPEG-4 Part 10 White Paper, Mar. 19, 2003, pp. 1-9, www.vcodex.com, Transform & Quantization.
Gary J. Sullivan et al., The H.264 / AVC Advanced Video Coding Standard: Overview and Introduction to the Fidelity Range Extensions, Aug. 2004, pp. 1-24.
Yeping Su et al., Efficient MPEG-2 to H.264/AVC Intra Transcoding in Transform-Domain, Dec. 2005, pp. 5, Mitsubishi Electric Research Laboratories http://www.merl.com.
Keng-Pang Lim et al., Text Description of Joint Model Reference Encoding Methods and Decoding Concealment Methods, Jan. 2005, pp. 1-43, Study of ITU-T Rec. H.264 and ITU-T Rec. H.2.64.2.
Antti Hallapuro et al., Low Complexity Transform and Quantization—Part I: Basic Implementation, Jan. 14, 2002, pp. 1-18, Nokia Corporation and Microsoft Corporation.
Keng-Pang Lim et al., Text Description of Joint Model Reference Encoding Methods and Decoding Concealment Methods, Jan. 2005, Study of ITU-T Rec. H.264 and ITU-T Rec. H.2.64.2.
Gary Sullivan et al., Draft of Version 4 of H.264/AVC (ITU-T Recommendation H.264 and ISO/IEC 14496-10 (MPEG-4 part 10) Advanced Video Coding), Nov. 11, 2004, pp. 1-315, Draft Third Edition of ITU-T Rec. H.264 (E).
H.264 / MPEG-4 Part 10 White Paper Revised Apr. 2003, pp. 1-6, www.vcodex.com H.264 / MPEG-4 Part 10: Intra Prediction.
Haverstock & Owens LLP
Odom Curtis B
Sony Corporation
Sony Electronics Inc.
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