Processing

Please wait...

Settings

Settings

Goto Application

1. CN102804172 - 16-point Transform For Media Data Coding

Office China
Application Number 201080027653.9
Application Date 23.06.2010
Publication Number 102804172
Publication Date 28.11.2012
Publication Kind A
IPC
G06F 17/14
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
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 Inc
Inventors Reznik Yuriy
joshi Rajan L
karczewicz Mart
Agents song xiantao
Priority Data 12/820,346 22.06.2010 US
61/219,885 24.06.2009 US
Title
(EN) 16-point Transform For Media Data Coding
(ZH) 用于媒体数据译码的16点变换
Abstract
(EN)
In general, techniques are described for implementing a 16-point inverse discrete cosine transform (IDCT) that is capable of applying multiple IDCTs of different sizes. For example, an apparatus comprising a 16-point inverse discrete cosine transform of type II (IDCT-II) unit may implement these techniques. The 16-point IDCT-II unit performs these IDCTs-II of different sizes to transform data from a spatial to a frequency domain. The 16-point IDCT-II unit includes an 8-point IDCT-II unit that performs one of the IDCTs-II of size 8 and a first 4-point IDCT-II unit that performs one of the IDCTs-II of size 4. The 8-point IDCT-II unit includes the first 4-point DCT-II unit. The 16-point IDCT-II unit also comprises an inverse 8-point DCT-IV unit that includes a second 4-point IDCT-II unit and a third 4-point IDCT-II unit.; Each of the second and third 4-point IDCT-II units performs one of the IDCTs-II of size 4.

(ZH)

大体来说,本发明描述用于实施16点逆离散余弦变换IDCT的技术,所述16点IDCT能够应用具有不同大小的多个IDCT。举例来说,包含16点II类型逆离散余弦变换IDCT-II单元的设备可实施这些技术。所述16点IDCT-II单元执行具有不同大小的这些IDCT-II以将数据从空间域变换到频域。所述16点IDCT-II单元包括执行IDCT-II中大小为8的一者的8点IDCT-II单元及执行IDCT-II中大小为4的一者的第一4点IDCT-II单元。所述8点IDCT-II单元包括所述第一4点DCT-II单元。所述16点IDCT-II单元还包含逆8点DCT-IV单元,所述逆8点DCT-IV单元包括第二4点IDCT-II单元及第三4点IDCT-II单元。所述第二4点IDCT-II单元及所述第三4点IDCT-II单元中的每一者执行IDCT-II中大小为4的一者。