Pulse or digital communications – Bandwidth reduction or expansion – Television or motion video signal
Reexamination Certificate
2007-05-29
2007-05-29
An, Shawn S. (Department: 2621)
Pulse or digital communications
Bandwidth reduction or expansion
Television or motion video signal
C375S240160, C375S240020, C375S240120, C375S240290, C375S240260, C382S238000, C382S236000, C382S239000, C348S699000
Reexamination Certificate
active
09462863
ABSTRACT:
To generate an improved image signal when estimating motion, a motion vector is first determined with pel accuracy, and a two-step interpolation filtering is subsequently carried out with sub-pel accuracy. The interpolation coefficients are selected with a view to reducing aliasing. More neighboring pixels are used for the interpolation than in usual interpolation methods. One is able to improve the quality of the prediction signal for video images and, consequently, enhance coding efficiency.
REFERENCES:
patent: 4890160 (1989-12-01), Thomas
patent: 5043808 (1991-08-01), Knauer et al.
patent: 5347599 (1994-09-01), Yamashita et al.
patent: 5502489 (1996-03-01), Kim et al.
patent: 5541660 (1996-07-01), Kim et al.
patent: 5600731 (1997-02-01), Sezan et al.
patent: 5684538 (1997-11-01), Nakaya et al.
patent: 5991447 (1999-11-01), Eifrig et al.
patent: 6057884 (2000-05-01), Chen et al.
patent: 6069670 (2000-05-01), Borer
patent: 6122017 (2000-09-01), Taubman
patent: 6714593 (2004-03-01), Benzler et al.
patent: 0 348 207 (1989-12-01), None
patent: 0 558 922 (1993-09-01), None
Zeigler M; Hierarchical Motion Estimation Using The Phase Correlation Method in 140 MBIT/S HDTV-CODING; Sep. 1989; Signal Processing of HDTV; pp. 131-137.
Ziegler, Hierarchical motion estimation . . . HDTV-coding, 1990, SIEMENS AG, signal processing of HDTV, 131-136.
Ziegler, Hierarchical motion estimation . . . HDTV coding, 1990 SIEMENS AG, signal processing of HDTV, 131-136.
Zeigler M; Heirarchical Motion Estimation Using the Phase Correlation Method in 140 MBIT/S HDTV-Coding; Sep. 1, 1989; pp. 131-137.
Werner O; Drift Analysis and Drift Reduction for Multiresolution Hybrid Video Coding; Jul. 1, 1996; pp. 387-409.
Siu-Leong Iu; Comparison of Motion Compensation Using Different Degrees of Sub-Pixel Accuracy for Interfield/Interframe Hybrid Coding of HDTV Image Sequences; Mar. 23, 1996; pp. 465-468.
International Organization for Standardization; Munich Meeting of MPEG-4 Working Group; Jan. 1996; pp. 3-49.
Benzler Ulrich
Werner Oliver
An Shawn S.
Kenyon & Kenyon LLP
Robert & Bosch GmbH
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