ES555225A0 - Circuito de calculo rapido de la transformada en coseno, directa o inversa, de una senal discreta - Google Patents

Circuito de calculo rapido de la transformada en coseno, directa o inversa, de una senal discreta

Info

Publication number
ES555225A0
ES555225A0 ES555225A ES555225A ES555225A0 ES 555225 A0 ES555225 A0 ES 555225A0 ES 555225 A ES555225 A ES 555225A ES 555225 A ES555225 A ES 555225A ES 555225 A0 ES555225 A0 ES 555225A0
Authority
ES
Spain
Prior art keywords
cosine
transformed
reverse
direct
calculation circuit
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.)
Granted
Application number
ES555225A
Other languages
English (en)
Other versions
ES8900240A1 (es
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of ES555225A0 publication Critical patent/ES555225A0/es
Publication of ES8900240A1 publication Critical patent/ES8900240A1/es
Expired legal-status Critical Current

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
ES555225A 1985-05-22 1986-05-22 Circuito de calculo rapido de la transformada en coseno, directa o inversa, de una senal discreta Expired ES8900240A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8507717A FR2582424B1 (fr) 1985-05-22 1985-05-22 Circuit de calcul rapide de la transformee en cosinus, directe ou inverse, d'un signal discret

Publications (2)

Publication Number Publication Date
ES555225A0 true ES555225A0 (es) 1989-05-01
ES8900240A1 ES8900240A1 (es) 1989-05-01

Family

ID=9319482

Family Applications (1)

Application Number Title Priority Date Filing Date
ES555225A Expired ES8900240A1 (es) 1985-05-22 1986-05-22 Circuito de calculo rapido de la transformada en coseno, directa o inversa, de una senal discreta

Country Status (7)

Country Link
US (1) US4841464A (es)
EP (1) EP0204603B1 (es)
JP (1) JP2710928B2 (es)
CA (1) CA1252212A (es)
DE (1) DE3687430T2 (es)
ES (1) ES8900240A1 (es)
FR (1) FR2582424B1 (es)

Families Citing this family (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL8700843A (nl) * 1987-04-10 1988-11-01 Philips Nv Televisie-overdrachtsysteem met transformcoding.
US5054103A (en) * 1987-09-24 1991-10-01 Matsushita Electric Works, Ltd. Picture encoding system
DE68928886T2 (de) * 1988-10-27 1999-06-02 Matsushita Electric Ind Co Ltd Gerät für die direkte oder umgekehrte orthogonale Transformation
US5163103A (en) * 1988-12-27 1992-11-10 Kabushiki Kaisha Toshiba Discrete cosine transforming apparatus
EP0376683A2 (en) * 1988-12-27 1990-07-04 Kabushiki Kaisha Toshiba Discrete cosine transforming apparatus
IT1235263B (it) * 1989-06-02 1992-06-26 Sgs Thomson Microelectronics Metodo e dispositivo per il calcolo aritmetico di trasformate bidimensionali.
US5053985A (en) * 1989-10-19 1991-10-01 Zoran Corporation Recycling dct/idct integrated circuit apparatus using a single multiplier/accumulator and a single random access memory
DE69131808T2 (de) 1990-07-31 2000-03-16 Fujitsu Ltd Verfahren und Gerät zur Bilddatenverarbeitung
US5875266A (en) * 1990-07-31 1999-02-23 Fujitsu Limited Image data processing a method and apparatus
US5343501A (en) * 1991-02-19 1994-08-30 Matsushita Electric Industrial Co., Ltd. Orthogonal transform apparatus for video signal processing
US5257213A (en) * 1991-02-20 1993-10-26 Samsung Electronics Co., Ltd. Method and circuit for two-dimensional discrete cosine transform
US5818742A (en) * 1991-06-24 1998-10-06 Atmel Corporation Apparatus to transform time to frequency and frequency to time of data signals
US5410500A (en) * 1992-02-21 1995-04-25 Sony Corporation Discrete cosine transform apparatus and inverse discrete cosine transform apparatus
JP3323950B2 (ja) * 1992-03-17 2002-09-09 サン・マイクロシステムズ・インコーポレーテッド デジタル画像処理システムでｉｄｃｔを実施する方法及びそのためのｉｄｃｔプロセッサ
US5224062A (en) * 1992-03-17 1993-06-29 Sun Microsystems, Inc. Method and apparatus for fast implementation of inverse discrete cosine transform in a digital image processing system using optimized lookup tables
US5654910A (en) * 1992-08-26 1997-08-05 Sony Corporation Processing method and apparatus for performing 4 ×4 discrete cosine transformation or inverse discrete cosing transformation
US5420811A (en) * 1992-08-26 1995-05-30 Sony Corporation Simple quick image processing apparatus for performing a discrete cosine transformation or an inverse discrete cosine transformation
JPH06103301A (ja) * 1992-09-17 1994-04-15 Sony Corp ８ｘ８離散コサイン変換回路および８ｘ８離散コサイン逆変換回路
US5523847A (en) * 1992-10-09 1996-06-04 International Business Machines Corporation Digital image processor for color image compression
JP2725544B2 (ja) * 1992-11-12 1998-03-11 日本電気株式会社 Ｄｃｔ及び逆ｄｃｔ演算装置並びにその演算方法
JPH06149862A (ja) * 1992-11-13 1994-05-31 Sony Corp 行列データ乗算方法及び行列データ乗算装置
US5345408A (en) * 1993-04-19 1994-09-06 Gi Corporation Inverse discrete cosine transform processor
JPH06334986A (ja) * 1993-05-19 1994-12-02 Sony Corp 重み付きコサイン変換方法
KR100836050B1 (ko) * 2001-05-23 2008-06-09 엘지전자 주식회사 고속 푸리에 변환 연산 장치
AU2001273587A1 (en) * 2001-06-15 2002-01-14 Kim Jongil Fast efficient computation of the discrete cosine transform (dct) of digital video data
US7883604B2 (en) * 2005-12-15 2011-02-08 Kimberly-Clark Worldwide, Inc. Creping process and products made therefrom
US9824066B2 (en) * 2011-01-10 2017-11-21 Qualcomm Incorporated 32-point transform for media data coding

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4385363A (en) * 1978-12-15 1983-05-24 Compression Labs, Inc. Discrete cosine transformer
US4449194A (en) * 1981-09-25 1984-05-15 Motorola Inc. Multiple point, discrete cosine processor
FR2561011B1 (fr) * 1984-03-09 1986-09-12 Cit Alcatel Processeur de calcul d'une transformee discrete inverse du cosinus
FR2561010B1 (fr) * 1984-03-09 1986-09-12 Cit Alcatel Processeur de calcul d'une transformee discrete du cosinus

Also Published As

Publication number Publication date
FR2582424A1 (fr) 1986-11-28
DE3687430D1 (de) 1993-02-18
JP2710928B2 (ja) 1998-02-10
EP0204603A1 (fr) 1986-12-10
EP0204603B1 (fr) 1993-01-07
CA1252212A (en) 1989-04-04
ES8900240A1 (es) 1989-05-01
FR2582424B1 (fr) 1989-06-30
DE3687430T2 (de) 1993-06-03
US4841464A (en) 1989-06-20
JPS61272870A (ja) 1986-12-03

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Legal Events

Date Code Title Description
FD1A Patent lapsed

Effective date: 20060314