Electrical computers: arithmetic processing and calculating – Electrical digital calculating computer – Particular function performed
Reexamination Certificate
2007-03-06
2007-03-06
Ngo, Chuong D. (Department: 2193)
Electrical computers: arithmetic processing and calculating
Electrical digital calculating computer
Particular function performed
C382S248000
Reexamination Certificate
active
10322598
ABSTRACT:
The present invention provides a method and apparatus that transforms input signals X0, X1, X2, X3using a 4-point Hadamard transform matrix, and of the resulting transformation data, rounds up the LSB of the first transformed data and rounds down the LSB of the remaining odd-numbered data. When restoring the data to its original state the rounding is executed after a Hadamard inverse transformation is performed, thereby restoring the data to its original state X0, X1, X2, X3.
REFERENCES:
patent: 5687218 (1997-11-01), Nakayama
patent: 5856935 (1999-01-01), Moy et al.
patent: 6732130 (2004-05-01), Shoji
patent: 2002/0118757 (2002-08-01), Hirase
patent: 08-205160 (1995-01-01), None
patent: 10-108186 (1996-09-01), None
patent: 11-338853 (1998-05-01), None
patent: 2001-128174 (1999-10-01), None
patent: 2002-262293 (2001-02-01), None
patent: 2004-038451 (2002-07-01), None
Makoto Hoshino, et al., “Lossless Image Coding Using Hadamard Transform Residue Patterns,” The Institute of Electronics, Information and Communication Engineers (IEICE), Technical Report, vol. 97, No. 428, CS97-132, p. 7-12, Dec. 12, 1997.
Makoto Hoshino, et al., “Lossless Image Coding Using a Number-Theoretic Hadamard Transform,” The Institute of Electronics, Information and Communication Engineers (IEICE), Technical Report, vol. 96, No. 402, CS96-132, p. 25-30, Dec. 13, 1996.
“Lossless 8-point fast discrete cosine transform using lossless hadamard transform,” Fukama, et al., The Institute of Electronics, Information and Communication Engineers, 1999, pp. 37-44.
Canon Kabushiki Kaisha
Fitzpatrick, Cella Harper & Scinto.
Ngo Chuong D.
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