DE68928886T2 - Gerät für die direkte oder umgekehrte orthogonale Transformation - Google Patents
Gerät für die direkte oder umgekehrte orthogonale TransformationInfo
- Publication number
- DE68928886T2 DE68928886T2 DE68928886T DE68928886T DE68928886T2 DE 68928886 T2 DE68928886 T2 DE 68928886T2 DE 68928886 T DE68928886 T DE 68928886T DE 68928886 T DE68928886 T DE 68928886T DE 68928886 T2 DE68928886 T2 DE 68928886T2
- Authority
- DE
- Germany
- Prior art keywords
- direct
- orthogonal transformation
- reverse orthogonal
- reverse
- transformation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F17/00—Digital computing or data processing equipment or methods, specially adapted for specific functions
- G06F17/10—Complex mathematical operations
- G06F17/14—Fourier, Walsh or analogous domain transformations, e.g. Laplace, Hilbert, Karhunen-Loeve, transforms
- G06F17/147—Discrete 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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
- H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
- H04N19/102—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the element, parameter or selection affected or controlled by the adaptive coding
- H04N19/124—Quantisation
- H04N19/126—Details of normalisation or weighting functions, e.g. normalisation matrices or variable uniform quantisers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
- H04N19/60—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
- H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
- H04N19/102—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the element, parameter or selection affected or controlled by the adaptive coding
- H04N19/124—Quantisation
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP63271179A JPH02116968A (ja) | 1988-10-27 | 1988-10-27 | 高速速コサイン変換装置 |
JP27118088A JP2658285B2 (ja) | 1988-10-27 | 1988-10-27 | 直交変換装置と逆直交変換装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
DE68928886D1 DE68928886D1 (de) | 1999-02-04 |
DE68928886T2 true DE68928886T2 (de) | 1999-06-02 |
Family
ID=26549577
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE68928886T Expired - Lifetime DE68928886T2 (de) | 1988-10-27 | 1989-10-25 | Gerät für die direkte oder umgekehrte orthogonale Transformation |
Country Status (3)
Country | Link |
---|---|
US (1) | US5117381A (de) |
EP (1) | EP0366435B1 (de) |
DE (1) | DE68928886T2 (de) |
Families Citing this family (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5343501A (en) * | 1991-02-19 | 1994-08-30 | Matsushita Electric Industrial Co., Ltd. | Orthogonal transform apparatus for video signal processing |
US5268755A (en) * | 1991-02-21 | 1993-12-07 | Matsushita Electric Industrial Co., Ltd. | Orthogonal transformation encoder |
US5258941A (en) * | 1991-12-13 | 1993-11-02 | Edward Newberger | Apparatus for utilizing a discrete fourier transformer to implement a discrete cosine transformer |
JP3298915B2 (ja) * | 1991-12-28 | 2002-07-08 | ソニー株式会社 | 符号化装置 |
US6002809A (en) * | 1993-04-15 | 1999-12-14 | International Business Machines Corporation | Digital image processor for image scaling |
JP3697717B2 (ja) * | 1993-09-24 | 2005-09-21 | ソニー株式会社 | 2次元離散コサイン変換装置および2次元逆離散コサイン変換装置 |
US5831881A (en) * | 1994-12-02 | 1998-11-03 | Sican Gmbh | Method and circuit for forward/inverse discrete cosine transform (DCT/IDCT) |
JPH08320858A (ja) * | 1995-05-25 | 1996-12-03 | Sony Corp | フーリエ変換演算装置および方法 |
US5701263A (en) * | 1995-08-28 | 1997-12-23 | Hyundai Electronics America | Inverse discrete cosine transform processor for VLSI implementation |
DE19618117C1 (de) * | 1996-05-06 | 1997-10-02 | Siemens Ag | Verfahren zur Quantisierung und Verfahren zur inversen Quantisierung von Transformationscodierungskoeffizienten eines Videodatenstorms |
US5894430A (en) * | 1996-05-20 | 1999-04-13 | Matsushita Electric Industrial Co., Ltd. | Orthogonal transform processor |
US6134270A (en) | 1997-06-13 | 2000-10-17 | Sun Microsystems, Inc. | Scaled forward and inverse discrete cosine transform and video compression/decompression systems employing the same |
JP3547972B2 (ja) | 1998-01-30 | 2004-07-28 | 三洋電機株式会社 | 離散コサイン変換回路 |
JP3547971B2 (ja) | 1998-01-30 | 2004-07-28 | 三洋電機株式会社 | 離散コサイン変換回路及びその動作方法 |
JP3524747B2 (ja) * | 1998-01-30 | 2004-05-10 | 三洋電機株式会社 | 離散コサイン変換回路 |
US6189021B1 (en) * | 1998-09-15 | 2001-02-13 | Winbond Electronics Corp. | Method for forming two-dimensional discrete cosine transform and its inverse involving a reduced number of multiplication operations |
US6421696B1 (en) | 1999-08-17 | 2002-07-16 | Advanced Micro Devices, Inc. | System and method for high speed execution of Fast Fourier Transforms utilizing SIMD instructions on a general purpose processor |
US6940828B2 (en) * | 2002-09-30 | 2005-09-06 | Nokia Corporation | Apparatus, and associated method, for transforming data in an OFDM communication system |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4385363A (en) * | 1978-12-15 | 1983-05-24 | Compression Labs, Inc. | Discrete cosine transformer |
FR2561011B1 (fr) * | 1984-03-09 | 1986-09-12 | Cit Alcatel | Processeur de calcul d'une transformee discrete inverse du cosinus |
FR2582424B1 (fr) * | 1985-05-22 | 1989-06-30 | Guichard Jacques | Circuit de calcul rapide de la transformee en cosinus, directe ou inverse, d'un signal discret |
US4717962A (en) * | 1986-12-17 | 1988-01-05 | Kabushiki Kaisha Toshiba | Method for compressing and reconstructing a data representation of a picture |
FR2608808B1 (fr) * | 1986-12-22 | 1989-04-28 | Efcis | Circuit integre de traitement numerique de signaux |
-
1989
- 1989-10-25 DE DE68928886T patent/DE68928886T2/de not_active Expired - Lifetime
- 1989-10-25 EP EP89310984A patent/EP0366435B1/de not_active Expired - Lifetime
-
1991
- 1991-08-01 US US07/739,106 patent/US5117381A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
EP0366435A2 (de) | 1990-05-02 |
DE68928886D1 (de) | 1999-02-04 |
EP0366435B1 (de) | 1998-12-23 |
EP0366435A3 (de) | 1992-04-29 |
US5117381A (en) | 1992-05-26 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition | ||
8327 | Change in the person/name/address of the patent owner |
Owner name: PANASONIC CORP., KADOMA, OSAKA, JP |