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1. WO2011005583 - 16-POINT TRANSFORM FOR MEDIA DATA CODING

Publication Number WO/2011/005583
Publication Date 13.01.2011
International Application No. PCT/US2010/039692
International Filing Date 23.06.2010
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
H04N 7/26 2006.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
7Television systems
24Systems for the transmission of television signals using pulse code modulation
26using bandwidth reduction
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
H04N 19/122
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
19Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
10using adaptive coding
102characterised by the element, parameter or selection affected or controlled by the adaptive coding
12Selection from among a plurality of transforms or standards, e.g. selection between discrete cosine transform [DCT] and sub-band transform or selection between H.263 and H.264
122Selection of transform size, e.g. 8x8 or 2x4x8 DCT; Selection of sub-band transforms of varying structure or type
H04N 19/176
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
19Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
10using adaptive coding
169characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding
17the unit being an image region, e.g. an object
176the region being a block, e.g. a macroblock
H04N 19/42
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
19Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
42characterised by implementation details or hardware specially adapted for video compression or decompression, e.g. dedicated software implementation
H04N 19/61
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
19Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
60using transform coding
61in combination with predictive coding
H04N 19/625
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
19Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
60using transform coding
625using discrete cosine transform [DCT]
Applicants
  • QUALCOMM INCORPORATED [US]/[US] (AllExceptUS)
  • REZNIK, Yuriy [UA]/[US] (UsOnly)
  • JOSHI, Rajan, L. [US]/[US] (UsOnly)
  • KARCZEWICZ, Marta [PL]/[US] (UsOnly)
Inventors
  • REZNIK, Yuriy
  • JOSHI, Rajan, L.
  • KARCZEWICZ, Marta
Agents
  • CHIANG, Campbell, C.
Priority Data
12/820,35722.06.2010US
61/219,88524.06.2009US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) 16-POINT TRANSFORM FOR MEDIA DATA CODING
(FR) TRANSFORMÉE À 16 POINTS POUR CODAGE DE DONNÉES DE MÉDIA
Abstract
(EN)
In general, techniques are described for implementing a 16-point discrete cosine transform (DCT) that is capable of applying multiple IDCT of different sizes. For example, an apparatus comprising a 16-point discrete cosine transform of type II (DCT-II) unit may implement the techniques of this disclosure. The 16-point DCT-II unit performs these DCTs-II of different sizes to transform data from a spatial to a frequency domain. The 16-point DCT-II unit includes an 8-point DCT-II unit that performs one of the DCTs-II of size 8 and a first 4-point DCT-II unit that performs one of the DCTs-II of size 4. The 8-point DCT-II unit includes the first 4-point DCT-II unit. The 16-point DCT-II unit also comprises an 8-point DCT-IV unit that includes a second 4-point DCT-II unit and a third 4-point DCT-II unit. Each of the second and third 4-point DCT-II units performs one of the DCTs-II of size 4.
(FR)
D'une manière générale, l'invention porte sur des techniques de mise en œuvre d'une transformée discrète de cosinus à 16 points (DCT) capable d'appliquer des ICDT multiples de différentes dimensions. Par exemple, un appareil comprenant une transformée discrète de cosinus à 16 points d'unité de type II (DCT-II) peut mettre en œuvre les techniques selon cette description. L'unité DCT-II à 16 points exécute ces DCT-II de différentes dimensions pour transformer des données d'un domaine spatial à un domaine fréquentiel. L'unité DCT-II à 16 points comprend une unité DCT-II à 8 points exécutant l'une des DCT-II de taille 8 et une première unité DCT-II à 4 points exécutant l'une des DCT-II de taille 4. L'unité DCT-II à 8 points comprend la première unité DCT-II à 4 points. L'unité DCT-II à 16 points comprend également une unité DCT-IV à 8 points comprenant une seconde unité DCT-II à 4 points et une troisième unité DCT-II à 4 points. Chacune des seconde et troisième unités DCT-II à 4 points exécute l'une des DCT-II de taille 4.
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