ES2145273T3 - Transcodificador. - Google Patents

Transcodificador.

Info

Publication number
ES2145273T3
ES2145273T3 ES95915946T ES95915946T ES2145273T3 ES 2145273 T3 ES2145273 T3 ES 2145273T3 ES 95915946 T ES95915946 T ES 95915946T ES 95915946 T ES95915946 T ES 95915946T ES 2145273 T3 ES2145273 T3 ES 2145273T3
Authority
ES
Spain
Prior art keywords
data flow
decoder
derivation
transcoder
coding
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
Application number
ES95915946T
Other languages
English (en)
Inventor
Michael Erling Nilsson
David Geoffrey Morrison
Mohammed Ghanbari
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.)
British Telecommunications PLC
Original Assignee
British Telecommunications PLC
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
Priority claimed from GB9414579A external-priority patent/GB9414579D0/en
Application filed by British Telecommunications PLC filed Critical British Telecommunications PLC
Application granted granted Critical
Publication of ES2145273T3 publication Critical patent/ES2145273T3/es
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T7/00—Image analysis
    • G06T7/20—Analysis of motion
    • G06T7/223—Analysis of motion using block-matching
    • G06T7/231—Analysis of motion using block-matching using full search
    • 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
    • H04N19/61—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding in combination with predictive coding

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (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)
  • Prostheses (AREA)
  • Medicines Containing Antibodies Or Antigens For Use As Internal Diagnostic Agents (AREA)

Abstract

UN TRANSCODIFICADOR PARA LA CONVERSION DE SEÑALES DE VIDEO ENTRE UN PRIMER Y SEGUNDO ESQUEMA DE CODIFICACION QUE EMPLEA COMPENSACION DE MOVIMIENTOS, COMPRENDE UN DESCODIFICADOR (28) PARA DESCODIFICAR UN FLUJO DE DATOS RECIBIDOS CODIFICADOS SEGUN UN PRIMER ESQUEMA DE CODIFICACION Y UN CODIFICADOR (30) PARA CODIFICAR UN FLUJO DE DATOS DEL DESCODIFICADOR EN UN FLUJO DE DATOS SEGUN UN SEGUNDO ESQUEMA DE CODIFICACION. EL DESCODIFICADOR (28) EXTRAE VECTORES DE MOVIMIENTO DEL FLUJO DE DATOS RECIBIDOS Y LOS PASA (42) AL FLUJO DE DATOS DEL CODIFICADOR, EVITANDO ASI LA RECALCULACION DE LOS VECTORES DE MOVIMIENTO. MEDIOS DE COMPENSACION DE DERIVACION (52-64; 70-78) PUEDEN SER PROPORCIONADOS PARA COMPENSAR CUALQUIER DERIVACION QUE RESULTE DESPUES DE UNA TRAMA DE IMAGEN.
ES95915946T 1994-04-21 1995-04-21 Transcodificador. Expired - Lifetime ES2145273T3 (es)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP94302829 1994-04-21
SG1996003023A SG43051A1 (en) 1994-04-21 1994-04-21 A transcoder
GB9414579A GB9414579D0 (es) 1994-04-21 1994-07-19

Publications (1)

Publication Number Publication Date
ES2145273T3 true ES2145273T3 (es) 2000-07-01

Family

ID=27236117

Family Applications (1)

Application Number Title Priority Date Filing Date
ES95915946T Expired - Lifetime ES2145273T3 (es) 1994-04-21 1995-04-21 Transcodificador.

Country Status (10)

Country Link
EP (1) EP0756803B1 (es)
JP (1) JP3614857B2 (es)
CN (1) CN1090425C (es)
AU (1) AU696085B2 (es)
CA (1) CA2187793C (es)
DE (1) DE69515997T2 (es)
ES (1) ES2145273T3 (es)
NZ (2) NZ284127A (es)
SG (1) SG43051A1 (es)
WO (1) WO1995029561A1 (es)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
GB9611511D0 (en) * 1996-06-03 1996-08-07 Digi Media Vision Ltd Improvements in or relating to the bit-rate of a signal
SE515535C2 (sv) * 1996-10-25 2001-08-27 Ericsson Telefon Ab L M En transkoder
CN1236527A (zh) * 1997-07-22 1999-11-24 皇家菲利浦电子有限公司 在视频序列之间进行切换的方法及相应的装置
JP4132664B2 (ja) 1997-11-27 2008-08-13 ブリティッシュ・テレコミュニケーションズ・パブリック・リミテッド・カンパニー トランスコーディング
US6775325B1 (en) * 1998-10-07 2004-08-10 Sarnoff Corporation Method and apparatus for converting the bitrate of an encoded bitstream without full re-encoding
US6434197B1 (en) * 1999-01-07 2002-08-13 General Instrument Corporation Multi-functional transcoder for compressed bit streams
US6441754B1 (en) 1999-08-17 2002-08-27 General Instrument Corporation Apparatus and methods for transcoder-based adaptive quantization
US6532593B1 (en) * 1999-08-17 2003-03-11 General Instrument Corporation Transcoding for consumer set-top storage application
WO2001039502A1 (en) * 1999-11-23 2001-05-31 Koninklijke Philips Electronics N.V. Seamless switching of mpeg video streams
US6847406B2 (en) * 2000-12-06 2005-01-25 Koninklijke Philips Electronics N.V. High quality, cost-effective film-to-video converter for high definition television
WO2003039158A1 (en) * 2001-10-29 2003-05-08 Koninklijke Philips Electronics N.V. Compression
CN100385956C (zh) * 2002-11-01 2008-04-30 诺基亚有限公司 用于图像编码转换的方法和设备
US20050111545A1 (en) 2003-11-25 2005-05-26 Ram Prabhakar Dynamic packet size control for MPEG-4 data partition mode
JP4534935B2 (ja) * 2005-10-04 2010-09-01 株式会社日立製作所 トランスコーダ、記録装置及びトランスコード方法
US7966361B1 (en) 2006-02-10 2011-06-21 Nvidia Corporation Single-cycle modulus operation
US8705630B2 (en) 2006-02-10 2014-04-22 Nvidia Corporation Adapting one type of encoder to another type of encoder
JP5022812B2 (ja) 2007-08-06 2012-09-12 ザインエレクトロニクス株式会社 画像信号処理装置
JP5709492B2 (ja) * 2010-12-01 2015-04-30 三菱電機株式会社 画像符号化方式変換装置および画像符号化方式変換プログラム
CN106231315B (zh) * 2016-08-05 2019-06-14 北京数码视讯科技股份有限公司 一种视频编码系统和应用该系统的视频编码方法

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5253244A (en) * 1980-07-16 1993-10-12 Discovision Associates System for recording digital information in a pulse-length modulation format
JPS57166640A (en) * 1981-04-03 1982-10-14 Hitachi Ltd Data transmission converting system of buffer device
NL8402411A (nl) * 1984-08-02 1986-03-03 Philips Nv Inrichting voor het korrigeren en maskeren van fouten in een informatiestroom, en weergeeftoestel voor het weergeven van beeld en/of geluid voorzien van zo een inrichting.
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
NL9301358A (nl) * 1993-08-04 1995-03-01 Nederland Ptt Transcodeerinrichting.
US5537440A (en) * 1994-01-07 1996-07-16 Motorola, Inc. Efficient transcoding device and method

Also Published As

Publication number Publication date
WO1995029561A1 (en) 1995-11-02
SG43051A1 (en) 1997-10-17
CA2187793C (en) 2000-05-30
DE69515997T2 (de) 2000-11-02
JP3614857B2 (ja) 2005-01-26
NZ284127A (en) 1998-04-27
CN1146840A (zh) 1997-04-02
CA2187793A1 (en) 1995-11-02
JPH09512395A (ja) 1997-12-09
CN1090425C (zh) 2002-09-04
EP0756803B1 (en) 2000-03-29
DE69515997D1 (de) 2000-05-04
AU696085B2 (en) 1998-09-03
AU2263795A (en) 1995-11-16
EP0756803A1 (en) 1997-02-05
NZ329781A (en) 1999-10-28

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