DE3567117D1 - Discrete cosine transform processor - Google Patents

Discrete cosine transform processor

Info

Publication number
DE3567117D1
DE3567117D1 DE8585102565T DE3567117T DE3567117D1 DE 3567117 D1 DE3567117 D1 DE 3567117D1 DE 8585102565 T DE8585102565 T DE 8585102565T DE 3567117 T DE3567117 T DE 3567117T DE 3567117 D1 DE3567117 D1 DE 3567117D1
Authority
DE
Germany
Prior art keywords
discrete cosine
cosine transform
transform processor
processor
discrete
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
Application number
DE8585102565T
Other languages
English (en)
Inventor
Emmanuel Arnould
Jean-Pierre Dugre
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.)
Alcatel CIT SA
Original Assignee
Alcatel CIT SA
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 Alcatel CIT SA filed Critical Alcatel CIT SA
Application granted granted Critical
Publication of DE3567117D1 publication Critical patent/DE3567117D1/de
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
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T9/00—Image coding
    • G06T9/007—Transform coding, e.g. discrete cosine transform
DE8585102565T 1984-03-09 1985-03-07 Discrete cosine transform processor Expired DE3567117D1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8403665A FR2561010B1 (fr) 1984-03-09 1984-03-09 Processeur de calcul d'une transformee discrete du cosinus

Publications (1)

Publication Number Publication Date
DE3567117D1 true DE3567117D1 (en) 1989-02-02

Family

ID=9301874

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8585102565T Expired DE3567117D1 (en) 1984-03-09 1985-03-07 Discrete cosine transform processor

Country Status (6)

Country Link
US (1) US4675836A (de)
EP (1) EP0154341B1 (de)
CA (1) CA1226666A (de)
DE (1) DE3567117D1 (de)
FR (1) FR2561010B1 (de)
IE (1) IE56104B1 (de)

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6336180B1 (en) 1997-04-30 2002-01-01 Canon Kabushiki Kaisha Method, apparatus and system for managing virtual memory with virtual-physical mapping
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
FR2593948B1 (fr) * 1986-02-06 1989-10-27 Duhamel Pierre Dispositif de transformee en cosinus d'un signal numerique echantillonne
GB2189631A (en) * 1986-04-23 1987-10-28 Stc Plc R f spectrum analysing receiver
NL8601183A (nl) * 1986-05-12 1987-12-01 Philips Nv Discrete cosinus transformatie-inrichting.
FR2599872B1 (fr) * 1986-06-06 1988-07-29 Thomson Csf Dispositifs de calcul de transformees cosinus mono-dimensionnelles, et dispositif de codage et dispositif de decodage d'images comportant de tels dispositifs de calcul
FR2603719B1 (fr) * 1986-09-04 1991-10-31 Duhamel Pierre Dispositif de determination de la transformee numerique d'un signal
IT1207346B (it) * 1987-01-20 1989-05-17 Cselt Centro Studi Lab Telecom Sformata coseno discreta a coeffi circuito per il calcolo della tra cienti quantizzati di campioni di segnale numerico
US4791598A (en) * 1987-03-24 1988-12-13 Bell Communications Research, Inc. Two-dimensional discrete cosine transform processor
NL8700843A (nl) * 1987-04-10 1988-11-01 Philips Nv Televisie-overdrachtsysteem met transformcoding.
NL8700845A (nl) * 1987-04-10 1988-11-01 Philips Nv Een-dimensionale lineaire beeldtransformator.
US5008848A (en) * 1989-05-30 1991-04-16 North American Philips Corporation Circuit for performing S-transform
JP2646778B2 (ja) * 1990-01-17 1997-08-27 日本電気株式会社 ディジタル信号処理装置
US5126962A (en) * 1990-07-11 1992-06-30 Massachusetts Institute Of Technology Discrete cosine transform processing system
US5202847A (en) * 1990-07-31 1993-04-13 Inmos Limited Digital signal processing
US5523847A (en) * 1992-10-09 1996-06-04 International Business Machines Corporation Digital image processor for color image compression
AUPO648397A0 (en) 1997-04-30 1997-05-22 Canon Information Systems Research Australia Pty Ltd Improvements in multiprocessor architecture operation
US6414687B1 (en) 1997-04-30 2002-07-02 Canon Kabushiki Kaisha Register setting-micro programming system
US6707463B1 (en) 1997-04-30 2004-03-16 Canon Kabushiki Kaisha Data normalization technique
US6272257B1 (en) 1997-04-30 2001-08-07 Canon Kabushiki Kaisha Decoder of variable length codes
US6061749A (en) 1997-04-30 2000-05-09 Canon Kabushiki Kaisha Transformation of a first dataword received from a FIFO into an input register and subsequent dataword from the FIFO into a normalized output dataword
AUPO647997A0 (en) 1997-04-30 1997-05-22 Canon Information Systems Research Australia Pty Ltd Memory controller architecture
US7454532B1 (en) * 2003-04-08 2008-11-18 Telairity Semiconductor, Inc. Stream data interface for processing system

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4196448A (en) * 1978-05-15 1980-04-01 The United States Of America As Represented By The Secretary Of The Navy TV bandwidth reduction system using a hybrid discrete cosine DPCM
US4385363A (en) * 1978-12-15 1983-05-24 Compression Labs, Inc. Discrete cosine transformer
US4293920A (en) * 1979-09-04 1981-10-06 Merola Pasquale A Two-dimensional transform processor
US4288858A (en) * 1979-10-01 1981-09-08 General Electric Company Inverse two-dimensional transform processor
US4449194A (en) * 1981-09-25 1984-05-15 Motorola Inc. Multiple point, discrete cosine processor

Also Published As

Publication number Publication date
IE850611L (en) 1985-09-09
EP0154341A1 (de) 1985-09-11
IE56104B1 (en) 1991-04-10
EP0154341B1 (de) 1988-12-28
FR2561010A1 (fr) 1985-09-13
FR2561010B1 (fr) 1986-09-12
CA1226666A (fr) 1987-09-08
US4675836A (en) 1987-06-23

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee