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1. WO1996004733 - SYSTEM AND METHOD FOR INVERSE DISCRETE COSINE TRANSFORM IMPLEMENTATION

Publication Number WO/1996/004733
Publication Date 15.02.1996
International Application No. PCT/US1995/009731
International Filing Date 31.07.1995
Chapter 2 Demand Filed 29.02.1996
IPC
G06F 17/14 2006.01
GPHYSICS
06COMPUTING; CALCULATING OR COUNTING
FELECTRIC DIGITAL DATA PROCESSING
17Digital computing or data processing equipment or methods, specially adapted for specific functions
10Complex mathematical operations
14Fourier, Walsh or analogous domain transformations
CPC
G06F 17/147
GPHYSICS
06COMPUTING; CALCULATING; COUNTING
FELECTRIC DIGITAL DATA PROCESSING
17Digital computing or data processing equipment or methods, specially adapted for specific functions
10Complex mathematical operations
14Fourier, Walsh or analogous domain transformations ; , e.g. Laplace, Hilbert, Karhunen-Loeve, transforms
147Discrete orthonormal transforms, e.g. discrete cosine transform, discrete sine transform, and variations therefrom, e.g. modified discrete cosine transform, integer transforms approximating the discrete cosine transform
G06F 7/49963
GPHYSICS
06COMPUTING; CALCULATING; COUNTING
FELECTRIC DIGITAL DATA PROCESSING
7Methods or arrangements for processing data by operating upon the order or content of the data handled
38Methods or arrangements for performing computations using exclusively denominational number representation, e.g. using binary, ternary, decimal representation
48using non-contact-making devices, e.g. tube, solid state device; using unspecified devices
499Denomination or exception handling, e.g. rounding, overflow
49942Significance control
49947Rounding
49963Rounding to nearest
Applicants
  • COMPCORE MULTIMEDIA, INC. [US/US]; 3120 Scott Boulevard 2nd floor SAnta Clara CA 95054, US
Inventors
  • CISMAS, Sorin, C.; US
Agents
  • EGAN, William, J., III ; Fish & Richardson P.C. Suite 100 2200 Sand Hill Road Menlo Park, CA 94025, US
Priority Data
08/282,94729.07.1994US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) SYSTEM AND METHOD FOR INVERSE DISCRETE COSINE TRANSFORM IMPLEMENTATION
(FR) SYSTEME ET PROCEDE DE TRANSFORMATION EN COSINUS DISCRETS INVERSE
Abstract
(EN)
An apparatus (13) and method for calculation of the inverse discrete cosine transform for image decompression are disclosed. The apparatus (13) may be implemented with approximately 10,000 transistors for MPEG2 main level speed and with less than 10,000 transistors for MPEG1 main level speed.
(FR)
Appareil et procédé de calcul de la transformation en cosinus discrets inverse pour la décompression d'images. Cet appareil peut être mis en oeuvre avec environ 10 000 transistors pour obtenir une vitesse appropriée au niveau principal MPEG2, et avec moins de 10 000 transistors pour obtenir une vitesse appropriée au niveau principal MPEG1.
Also published as
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