FI112146B - Transkoodauslaite - Google Patents

Transkoodauslaite Download PDF

Info

Publication number
FI112146B
FI112146B FI943622A FI943622A FI112146B FI 112146 B FI112146 B FI 112146B FI 943622 A FI943622 A FI 943622A FI 943622 A FI943622 A FI 943622A FI 112146 B FI112146 B FI 112146B
Authority
FI
Finland
Prior art keywords
input
output
signal
coupled
quantization
Prior art date
Application number
FI943622A
Other languages
English (en)
Finnish (fi)
Swedish (sv)
Other versions
FI943622A (fi
FI943622A0 (fi
Inventor
Johannes Franciscus Koppelmans
Arian Koster
Dolf Albert Schinkel
Original Assignee
Konink Ptt Nederland Nv
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 Konink Ptt Nederland Nv filed Critical Konink Ptt Nederland Nv
Publication of FI943622A0 publication Critical patent/FI943622A0/fi
Publication of FI943622A publication Critical patent/FI943622A/fi
Application granted granted Critical
Publication of FI112146B publication Critical patent/FI112146B/fi

Links

Classifications

    • 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
    • H04N19/40—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using video transcoding, i.e. partial or full decoding of a coded input stream followed by re-encoding of the decoded output stream
    • 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
    • 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
    • H04N19/134—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the element, parameter or criterion affecting or controlling the adaptive coding
    • H04N19/157—Assigned coding mode, i.e. the coding mode being predefined or preselected to be further used for selection of another element or parameter
    • 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
    • H04N19/134—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the element, parameter or criterion affecting or controlling the adaptive coding
    • H04N19/162—User input
    • 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
    • H04N19/189—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the adaptation method, adaptation tool or adaptation type used for the adaptive coding
    • H04N19/196—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the adaptation method, adaptation tool or adaptation type used for the adaptive coding being specially adapted for the computation of encoding parameters, e.g. by averaging previously computed encoding parameters
    • 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
    • H04N19/46—Embedding additional information in the video signal during the compression process
    • 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
    • H04N19/48—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using compressed domain processing techniques other than decoding, e.g. modification of transform coefficients, variable length coding [VLC] data or run-length data
    • 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
    • H04N19/50—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding
    • H04N19/503—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding involving temporal prediction
    • H04N19/51—Motion estimation or motion compensation
    • 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
    • H04N19/60—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding
    • H04N19/61—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding in combination with predictive 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
    • H04N19/134—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the element, parameter or criterion affecting or controlling the adaptive coding
    • H04N19/146—Data rate or code amount at the encoder output
    • 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
    • H04N19/134—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the element, parameter or criterion affecting or controlling the adaptive coding
    • H04N19/146—Data rate or code amount at the encoder output
    • H04N19/152—Data rate or code amount at the encoder output by measuring the fullness of the transmission buffer

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Computing Systems (AREA)
  • Theoretical Computer Science (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
  • Luminescent Compositions (AREA)
  • Physical Deposition Of Substances That Are Components Of Semiconductor Devices (AREA)
  • Color Television Systems (AREA)
  • Electromechanical Clocks (AREA)
  • Holo Graphy (AREA)
  • Analysing Materials By The Use Of Radiation (AREA)
  • Image Processing (AREA)
  • Developing Agents For Electrophotography (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
  • Steering Control In Accordance With Driving Conditions (AREA)
  • Mechanical Treatment Of Semiconductor (AREA)
  • Supplying Of Containers To The Packaging Station (AREA)
FI943622A 1993-08-04 1994-08-04 Transkoodauslaite FI112146B (fi)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL9301358A NL9301358A (nl) 1993-08-04 1993-08-04 Transcodeerinrichting.
NL9301358 1993-08-04

Publications (3)

Publication Number Publication Date
FI943622A0 FI943622A0 (fi) 1994-08-04
FI943622A FI943622A (fi) 1995-02-05
FI112146B true FI112146B (fi) 2003-10-31

Family

ID=19862729

Family Applications (1)

Application Number Title Priority Date Filing Date
FI943622A FI112146B (fi) 1993-08-04 1994-08-04 Transkoodauslaite

Country Status (15)

Country Link
US (1) US5544266A (fr)
EP (1) EP0637893B1 (fr)
JP (1) JP2860880B2 (fr)
KR (1) KR0127094B1 (fr)
CN (1) CN1056489C (fr)
AT (1) ATE174178T1 (fr)
AU (1) AU672507B2 (fr)
CA (1) CA2128793C (fr)
DE (1) DE69414931T2 (fr)
DK (1) DK0637893T3 (fr)
ES (1) ES2127350T3 (fr)
FI (1) FI112146B (fr)
GR (1) GR3029529T3 (fr)
NL (1) NL9301358A (fr)
NO (1) NO308569B1 (fr)

Families Citing this family (78)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6243139B1 (en) * 1993-12-22 2001-06-05 Canon Kabushiki Kaisha Apparatus for block-encoding input image signals
US5715009A (en) * 1994-03-29 1998-02-03 Sony Corporation Picture signal transmitting method and apparatus
US5940130A (en) * 1994-04-21 1999-08-17 British Telecommunications Public Limited Company Video transcoder with by-pass transfer of extracted motion compensation data
SG43051A1 (en) * 1994-04-21 1997-10-17 British Telecomm A transcoder
DE4416967A1 (de) * 1994-05-13 1995-11-16 Thomson Brandt Gmbh Verfahren und Vorrichtung zur Transcodierung von Bitströmen mit Videodaten
EP1701552B1 (fr) * 1994-06-08 2008-07-30 Matsushita Electric Industrial Co., Ltd. Appareil pour la transformation d'images
WO1995035628A1 (fr) 1994-06-17 1995-12-28 Snell & Wilcox Limited Compression video
JP3058028B2 (ja) * 1994-10-31 2000-07-04 三菱電機株式会社 画像符号化データ再符号化装置
US5617142A (en) * 1994-11-08 1997-04-01 General Instrument Corporation Of Delaware Method and apparatus for changing the compression level of a compressed digital signal
WO1996025823A2 (fr) * 1995-02-15 1996-08-22 Philips Electronics N.V. Procede et dispositif pour transcoder des signaux video
GB2307613B (en) * 1995-08-31 2000-03-22 British Broadcasting Corp Switching bit-rate reduced signals
DE19608737C1 (de) * 1996-03-06 1997-06-19 Siemens Ag Anordnung und Verfahren zur Formatwandlung von Bildblöcken von einem ersten Codierungsformat in ein zweites Codierungsformat
JP2000508855A (ja) * 1996-04-12 2000-07-11 イメディア コーポレイション ビデオ・トランスコーダ
GB9608271D0 (en) 1996-04-22 1996-06-26 Electrocraft Lab Video compession
JP3623056B2 (ja) * 1996-09-10 2005-02-23 ソニー株式会社 動画像圧縮装置
US6141447A (en) * 1996-11-21 2000-10-31 C-Cube Microsystems, Inc. Compressed video transcoder
KR100599017B1 (ko) * 1996-12-12 2006-12-13 소니 가부시끼 가이샤 영상 데이터 압축 장치 및 그 방법
US5870146A (en) * 1997-01-21 1999-02-09 Multilink, Incorporated Device and method for digital video transcoding
WO1999005870A2 (fr) * 1997-07-22 1999-02-04 Koninklijke Philips Electronics N.V. Technique de commutation entre sequences video et dispositif afferent
KR100487988B1 (ko) * 1997-10-23 2005-05-09 미쓰비시덴키 가부시키가이샤 부호화 비트 스트림 변환 장치
KR100592651B1 (ko) * 1997-11-27 2006-06-23 브리티쉬 텔리커뮤니케이션즈 파블릭 리미티드 캄퍼니 트랜스코딩 방법 및 장치
US7305040B1 (en) 1998-01-19 2007-12-04 Sony Corporation Edit system, edit control device, and edit control method
JPH11275592A (ja) * 1998-01-22 1999-10-08 Victor Co Of Japan Ltd 動画像符号列変換装置及びその方法
GB2333656B (en) * 1998-01-22 2002-08-14 British Broadcasting Corp Compressed signals
US6058143A (en) * 1998-02-20 2000-05-02 Thomson Licensing S.A. Motion vector extrapolation for transcoding video sequences
CA2265089C (fr) * 1998-03-10 2007-07-10 Sony Corporation Systeme de transcodage utilisant les informations d'encodage
KR100588797B1 (ko) * 1998-03-31 2006-06-13 코닌클리케 필립스 일렉트로닉스 엔.브이. 인코딩된 데이터 스트림의 데이터를 수정하기 위한 방법 및 장치
US6477706B1 (en) 1998-05-01 2002-11-05 Cogent Technology, Inc. Cable television system using transcoding method
US6215824B1 (en) * 1998-05-01 2001-04-10 Boom Corporation Transcoding method for digital video networking
US6226328B1 (en) * 1998-05-01 2001-05-01 Boom Corporation Transcoding apparatus for digital video networking
US7130351B1 (en) * 1998-05-14 2006-10-31 Vulcan Patents Llc Storage reduction during compression
JP3099809B2 (ja) * 1998-06-04 2000-10-16 日本電気株式会社 片フィールドデータによるフレーム表示方法および装置
US6549652B1 (en) 1998-09-11 2003-04-15 Cirrus Logic, Inc. Method and apparatus for reducing noise during lossy transformation processes
US7158681B2 (en) * 1998-10-01 2007-01-02 Cirrus Logic, Inc. Feedback scheme for video compression system
US6310976B1 (en) 1998-10-01 2001-10-30 Sharewave, Inc. Method and apparatus for digital data compression
US6229852B1 (en) * 1998-10-26 2001-05-08 Sony Corporation Reduced-memory video decoder for compressed high-definition video data
US6393155B1 (en) * 1998-11-04 2002-05-21 International Business Machines Corporation Error reduction in transformed digital data
US7194138B1 (en) * 1998-11-04 2007-03-20 International Business Machines Corporation Reduced-error processing of transformed digital data
US6256422B1 (en) * 1998-11-04 2001-07-03 International Business Machines Corporation Transform-domain correction of real-domain errors
WO2000031878A1 (fr) * 1998-11-20 2000-06-02 Interval Research Corporation Video compression a faible cout utilisant un codage z rapide et modifie de pyramides d'ondelettes
US6434197B1 (en) 1999-01-07 2002-08-13 General Instrument Corporation Multi-functional transcoder for compressed bit streams
US7551672B1 (en) * 1999-02-05 2009-06-23 Sony Corporation Encoding system and method, decoding system and method, multiplexing apparatus and method, and display system and method
WO2000046989A1 (fr) 1999-02-05 2000-08-10 Sony Corporation Dispositifs de codage et de decodage et methodes correspondantes, systeme de codage et procede correspondant
CN1241416C (zh) * 1999-02-09 2006-02-08 索尼公司 编码系统和方法、编码及解码、记录及再现的设备和方法
US6259741B1 (en) * 1999-02-18 2001-07-10 General Instrument Corporation Method of architecture for converting MPEG-2 4:2:2-profile bitstreams into main-profile bitstreams
US6625211B1 (en) * 1999-02-25 2003-09-23 Matsushita Electric Industrial Co., Ltd. Method and apparatus for transforming moving picture coding system
JP3807157B2 (ja) * 1999-06-25 2006-08-09 日本ビクター株式会社 符号化装置及び符号化方法
JP3694888B2 (ja) * 1999-12-03 2005-09-14 ソニー株式会社 復号装置および方法、符号化装置および方法、情報処理装置および方法、並びに記録媒体
JP2003520510A (ja) * 2000-01-14 2003-07-02 コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ 符号化された信号内への単純化されたロゴ挿入
GB2398215B (en) * 2000-02-18 2004-09-22 Radioscape Ltd Method of and apparatus for converting an audio signal between data compression formats
GB0003954D0 (en) * 2000-02-18 2000-04-12 Radioscape Ltd Method of and apparatus for converting a signal between data compression formats
JP2001251616A (ja) * 2000-03-02 2001-09-14 Media Glue Corp 多重化音響・動画圧縮符号化信号変換方法、装置および変換プログラムを記録した媒体
CA2374067C (fr) * 2000-03-13 2012-09-25 Sony Corporation Methode et dispositif permettant de generer des metadonnees compactes sur des indices de transcodage
JP2001339460A (ja) * 2000-05-26 2001-12-07 Matsushita Electric Ind Co Ltd デジタル送受信装置
US6711212B1 (en) 2000-09-22 2004-03-23 Industrial Technology Research Institute Video transcoder, video transcoding method, and video communication system and method using video transcoding with dynamic sub-window skipping
US6650707B2 (en) 2001-03-02 2003-11-18 Industrial Technology Research Institute Transcoding apparatus and method
US6804299B2 (en) * 2001-06-15 2004-10-12 Microsoft Corporation Methods and systems for reducing requantization-originated generational error in predictive video streams using motion compensation
KR100395396B1 (ko) * 2001-06-15 2003-08-21 주식회사 성진씨앤씨 다채널 동영상 압축 방법 및 장치
US7236529B2 (en) * 2001-10-30 2007-06-26 Industrial Technology Research Institute Methods and systems for video transcoding in DCT domain with low complexity
JP4193406B2 (ja) * 2002-04-16 2008-12-10 三菱電機株式会社 映像データ変換装置および映像データ変換方法
KR100454151B1 (ko) * 2002-06-28 2004-10-26 주식회사농심 비스켓 및 그 제조 방법
JP4196726B2 (ja) * 2003-05-14 2008-12-17 ソニー株式会社 画像処理装置および画像処理方法、記録媒体、並びに、プログラム
JP4120934B2 (ja) * 2003-06-16 2008-07-16 ソニー株式会社 画像処理装置および画像処理方法、記録媒体、並びに、プログラム
TWI230547B (en) * 2004-02-04 2005-04-01 Ind Tech Res Inst Low-complexity spatial downscaling video transcoder and method thereof
US20050232497A1 (en) * 2004-04-15 2005-10-20 Microsoft Corporation High-fidelity transcoding
CN101099392B (zh) * 2005-01-07 2010-10-13 富士通株式会社 压缩编码装置、解压缩解码装置
US7830800B1 (en) 2006-01-12 2010-11-09 Zenverge, Inc. Architecture for combining media processing with networking
US8102916B1 (en) 2006-01-12 2012-01-24 Zenverge, Inc. Dynamically changing media compression format in compressed domain
US8311114B1 (en) * 2006-12-06 2012-11-13 Zenverge, Inc. Streamlined transcoder architecture
US8457958B2 (en) * 2007-11-09 2013-06-04 Microsoft Corporation Audio transcoder using encoder-generated side information to transcode to target bit-rate
US8265168B1 (en) 2008-02-01 2012-09-11 Zenverge, Inc. Providing trick mode for video stream transmitted over network
WO2009097284A1 (fr) * 2008-02-01 2009-08-06 Zenverge, Inc. Compression intermédiaire d'images de référence pour transcodage
US8396114B2 (en) * 2009-01-29 2013-03-12 Microsoft Corporation Multiple bit rate video encoding using variable bit rate and dynamic resolution for adaptive video streaming
US8311115B2 (en) * 2009-01-29 2012-11-13 Microsoft Corporation Video encoding using previously calculated motion information
US8270473B2 (en) * 2009-06-12 2012-09-18 Microsoft Corporation Motion based dynamic resolution multiple bit rate video encoding
US8705616B2 (en) 2010-06-11 2014-04-22 Microsoft Corporation Parallel multiple bitrate video encoding to reduce latency and dependences between groups of pictures
US9591318B2 (en) 2011-09-16 2017-03-07 Microsoft Technology Licensing, Llc Multi-layer encoding and decoding
US11089343B2 (en) 2012-01-11 2021-08-10 Microsoft Technology Licensing, Llc Capability advertisement, configuration and control for video coding and decoding

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4047151A (en) * 1974-12-24 1977-09-06 Rydbeck Nils R C Adaptive error correcting transmission system
JPS57166640A (en) * 1981-04-03 1982-10-14 Hitachi Ltd Data transmission converting system of buffer device
DE3613343A1 (de) * 1986-04-19 1987-10-22 Philips Patentverwaltung Hybrid-codierer
DE3639753A1 (de) * 1986-11-21 1988-06-01 Inst Rundfunktechnik Gmbh Verfahren zum uebertragen digitalisierter tonsignale
NL8801155A (nl) * 1988-05-03 1989-12-01 Philips Nv Televisie-overdrachtsysteem met hybride kodeerschakeling.
CA2016641C (fr) * 1989-05-12 1995-07-11 Toshiyuki Tanoi Systeme de communication video a codage a prevision inter-image adaptative
EP0442548B1 (fr) * 1990-01-30 1995-08-02 Laboratoires D'electronique Philips S.A.S. Dispositifs de codage et de décodage à longueur variable de signaux numériques
JPH04192080A (ja) * 1990-11-27 1992-07-10 Mitsubishi Electric Corp 画像メモリ装置及び画像データ処理方法
DE69230268T2 (de) * 1991-02-21 2000-04-13 Nec Corp Kodierungsgerät zur Kompression von bewegten Bilddaten
EP0508597B1 (fr) * 1991-03-08 1997-11-12 Nec Corporation Convertisseur de code ADPCM dans lequel pour la conversation de code les nombres de bit différents sont utilisés
NL9200499A (nl) * 1992-03-17 1993-10-18 Nederland Ptt Systeem omvattende ten minste een encoder voor het coderen van een digitaal signaal en ten minste een decoder voor het decoderen van een gecodeerd digitaal signaal, alsmede encoder en decoder voor toepassing in het systeem.
NL9201594A (nl) * 1992-09-14 1994-04-05 Nederland Ptt Systeem omvattende ten minste één encoder voor het coderen van een digitaal signaal en ten minste één decoder voor het decoderen van een gecodeerd digitaal signaal, en encoder en decoder voor toepassing in het systeem.

Also Published As

Publication number Publication date
DE69414931D1 (de) 1999-01-14
DK0637893T3 (da) 1999-08-16
NO942866D0 (fr) 1994-08-02
ATE174178T1 (de) 1998-12-15
NL9301358A (nl) 1995-03-01
CA2128793C (fr) 1998-07-14
KR950006612A (ko) 1995-03-21
DE69414931T2 (de) 1999-07-08
KR0127094B1 (ko) 1997-12-29
CN1111878A (zh) 1995-11-15
JPH0795090A (ja) 1995-04-07
GR3029529T3 (en) 1999-06-30
EP0637893B1 (fr) 1998-12-02
NO308569B1 (no) 2000-09-25
AU6880594A (en) 1995-02-16
ES2127350T3 (es) 1999-04-16
AU672507B2 (en) 1996-10-03
CN1056489C (zh) 2000-09-13
FI943622A (fi) 1995-02-05
CA2128793A1 (fr) 1995-02-05
NO942866L (no) 1995-02-06
JP2860880B2 (ja) 1999-02-24
FI943622A0 (fi) 1994-08-04
EP0637893A1 (fr) 1995-02-08
US5544266A (en) 1996-08-06

Similar Documents

Publication Publication Date Title
FI112146B (fi) Transkoodauslaite
US5940130A (en) Video transcoder with by-pass transfer of extracted motion compensation data
US6496216B2 (en) Method and system for multimedia communication control
JP3496959B2 (ja) ディジタル信号の符号化装置及び復号装置
JP2709786B2 (ja) デジタル信号を符号化するための少なくとも１個の符号器及び符号化したデジタル信号を復号化するための少なくとも１個の復号器を含む装置並びに装置で使用される符号器及び復号器
EP0756803B1 (fr) Transcodeur
JPH01264324A (ja) ディジタル画像信号の符号化復号化方法
US4745474A (en) Two resolution level DPCM system
JP2835906B2 (ja) 第１デジタル信号をコード化するための第１エンコーダ、第２デジタル信号をコード化するための第２エンコーダ、およびコード化されたデジタル信号をデコードするための少なくとも１つのデコーダからなるシステム、および該システムに用いられるコーダとデコーダ
KR100202538B1 (ko) 엠펙 비디오 코덱 장치
EP0925688A1 (fr) Procede et dispositif de codage video et dispositif de decodage correspondant
KR20070081949A (ko) 트랜스코딩 장치 및 방법
US6697428B2 (en) Transcoding method and device
US7085321B2 (en) Compression
US20060140274A1 (en) Transcoder and method used therein
KR100207380B1 (ko) 동영상 단말기의 간축장치
KR0178225B1 (ko) 영상기기의 부호화장치
KR100386374B1 (ko) 트랜스코더
KR20020040019A (ko) 영상 압축에서 양자화 오차의 디시값 추가 보상을 통한이미지의 화질 개선장치 및 그 방법
IL145363A (en) Method and system for multimedia communication control

Legal Events

Date Code Title Description
MM Patent lapsed