Variable length coding method and variable length decoding...

Details Variable length coding method and variable length decoding... Variable length coding method and variable length decoding...

2011-08-23

2011-08-23

Banks Harold, Marsha D (Department: 2482)

Pulse or digital communications

Bandwidth reduction or expansion

Television or motion video signal

C382S247000

Reexamination Certificate

active

08005146

ABSTRACT:
A variable length coding method is comprised of: a coefficient value scanning step in which an RL sequence generation unit203, a reordering unit202, and a binarization unit203scan coefficient values within a block in a predetermined scanning order starting at a higher-frequency component toward a lower-frequency component; and an arithmetic coding step in which an arithmetic coding unit205and a table storage unit204perform arithmetic coding on the absolute values of the coefficient values according to the scanning order used in the coefficient value scanning step, by switching between probability tables1˜4for use, wherein, in the arithmetic coding step, a probability table to be used is switched to another probability table in one direction, when the arithmetic-coded absolute values of the coefficient values include an absolute value exceeding a predetermined threshold value.

REFERENCES:
patent: 5510785 (1996-04-01), Segawa et al.
patent: 5751232 (1998-05-01), Inoue et al.
patent: 5883976 (1999-03-01), Ohsawa
patent: 6265997 (2001-07-01), Nomizu
patent: 6546145 (2003-04-01), Miyake et al.
patent: 6681049 (2004-01-01), Kobayashi et al.
patent: 6829300 (2004-12-01), Ichioka
patent: 6856701 (2005-02-01), Karczewicz et al.
patent: 7099387 (2006-08-01), Bjontegaard et al.
patent: 2001/0011959 (2001-08-01), Hirano et al.
patent: 2001/0024526 (2001-09-01), Kadono
patent: 2001/0048769 (2001-12-01), Kajiki et al.
patent: 2002/0126755 (2002-09-01), Li et al.
patent: 2005/0254583 (2005-11-01), Kim et al.
patent: 2006/0171533 (2006-08-01), Lee et al.
patent: 2007/0160149 (2007-07-01), Chujoh et al.
patent: 0 267 578 (1988-05-01), None
patent: 0 616 471 (1994-09-01), None
patent: 0 720 379 (1996-07-01), None
patent: 0 762 771 (1997-03-01), None
patent: 0 873 017 (1998-10-01), None
patent: 1 150 434 (2001-10-01), None
patent: 4-100390 (1992-04-01), None
patent: 4-315270 (1992-11-01), None
patent: 5-95484 (1993-04-01), None
patent: 5-347710 (1993-12-01), None
patent: 6-178282 (1994-06-01), None
patent: 6-232765 (1994-08-01), None
patent: 6-343168 (1994-12-01), None
patent: 7-59086 (1995-03-01), None
patent: 8-186722 (1996-07-01), None
patent: 8-214310 (1996-08-01), None
patent: 9-172379 (1997-06-01), None
patent: 9-307901 (1997-11-01), None
patent: 11-243343 (1999-09-01), None
patent: 11-341497 (1999-12-01), None
patent: 2001-24515 (2001-01-01), None
patent: 1998-0006957 (1998-03-01), None
patent: 1999-0066516 (1999-08-01), None
International Search Report issued Jul. 15, 2003 in corresponding International Application No. PCT/JP03/04804.
Supplementary European Search Report issued Aug. 26, 2004 in corresponding European Application No. 03 720 906.
European Office Action issued Feb. 7, 2006 in corresponding European Application No. 03 720 906.
Kuduvalli G. R., et al., “Performance Analysis of Reversible Image Compression Techniques for High-Resolution Digital Teleradiology”, IEEE Transactions on Medical Imaging, IEEE Inc., New York, US, vol. 11, No. 3, Sep. 1, 1992, p. 430-445, XP000306334.
F. Hartung, et al. “Improved Encoding of DCT Coefficients for Low Bit-Rate Video Coding Using Multiple VLC Tables”, Image Processings, 1999. ICIP 99. Proceedings. 1999 International Conference on Kobe, Japan, Oct. 24-28, 1999, Piscataway, NJ, USA, IEEE, US, pp. 51-55.
ITU-T Recommendation H.263: “Video Coding for Low Bit Rate Communication”, 1998, Annex E.

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