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ES2171312T3 - Transcodificacion. - Google Patents

Transcodificacion.

Info

Publication number
ES2171312T3
ES2171312T3 ES98955804T ES98955804T ES2171312T3 ES 2171312 T3 ES2171312 T3 ES 2171312T3 ES 98955804 T ES98955804 T ES 98955804T ES 98955804 T ES98955804 T ES 98955804T ES 2171312 T3 ES2171312 T3 ES 2171312T3
Authority
ES
Spain
Prior art keywords
vectors
frame
coding
coding system
frames
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
ES98955804T
Other languages
English (en)
Inventor
Michael Erling Nilsson
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
Application filed by British Telecommunications PLC filed Critical British Telecommunications PLC
Application granted granted Critical
Publication of ES2171312T3 publication Critical patent/ES2171312T3/es
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/40Methods 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
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/50Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding
    • H04N19/503Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding involving temporal prediction
    • H04N19/51Motion estimation or motion compensation

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)

Abstract

Transcodificador que comprende un decodificador para decodificar una señal de vídeo recibida según un primer sistema de codificación que emplea codificación predictiva intertrama con compensación de movimiento, en el que las tramas se codifican fuera de secuencia de manera que la codificación de algunas tramas requiere la predicción de una trama posterior utilizando vectores de movimiento hacia atrás, y un codificador para codificar de nuevo la señal según un segundo sistema de codificación, en el que por lo menos algunas tramas se codifican utilizando codificación predictiva intertrama con compensación de movimiento basada en una trama de referencia que no es igual en el segundo sistema de codificación que en el primer sistema de codificación, caracterizado porque el transcodificador incluye medios de procesamiento de vectores de movimiento (32) para generar un vector de movimiento estimado para una trama actual de la señal de vídeo, estando conectados los medios de procesamiento de vectores de movimiento para recibir, cuando se procesan vectores de procesamiento para una trama actual, vectores que, en la señal recibida, acompañan por lo menos a otra trama de la señal de vídeo, y siendo apto para invertir el signo de los vectores de movimiento hacia atrás cuando se generan vectores de movimiento estimados para ser utilizados por el codificador cuando se está recodificando mediante predicción hacia delante.
ES98955804T 1997-11-27 1998-11-27 Transcodificacion. Expired - Lifetime ES2171312T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP97309575 1997-11-27

Publications (1)

Publication Number Publication Date
ES2171312T3 true ES2171312T3 (es) 2002-09-01

Family

ID=8229639

Family Applications (1)

Application Number Title Priority Date Filing Date
ES98955804T Expired - Lifetime ES2171312T3 (es) 1997-11-27 1998-11-27 Transcodificacion.

Country Status (11)

Country Link
US (1) US6625320B1 (es)
EP (1) EP1010330B1 (es)
JP (1) JP4132664B2 (es)
KR (1) KR100592651B1 (es)
CN (1) CN1156164C (es)
AU (1) AU744535B2 (es)
CA (1) CA2303516C (es)
DE (1) DE69803195T2 (es)
ES (1) ES2171312T3 (es)
HK (1) HK1029694A1 (es)
WO (1) WO1999029113A1 (es)

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US9124907B2 (en) 2004-10-04 2015-09-01 Nokia Technologies Oy Picture buffering method
KR100679022B1 (ko) * 2004-10-18 2007-02-05 삼성전자주식회사 계층간 필터링을 이용한 비디오 코딩 및 디코딩방법과,비디오 인코더 및 디코더
US20060210156A1 (en) * 2005-03-18 2006-09-21 Sharp Laboratories Of America, Inc. Video compression for raw rgb format using residual color transform
US8045618B2 (en) * 2005-08-05 2011-10-25 Lsi Corporation Method and apparatus for MPEG-2 to VC-1 video transcoding
US8208540B2 (en) * 2005-08-05 2012-06-26 Lsi Corporation Video bitstream transcoding method and apparatus
US7881384B2 (en) * 2005-08-05 2011-02-01 Lsi Corporation Method and apparatus for H.264 to MPEG-2 video transcoding
US7912127B2 (en) * 2005-08-05 2011-03-22 Lsi Corporation H.264 to VC-1 and VC-1 to H.264 transcoding
US7903739B2 (en) * 2005-08-05 2011-03-08 Lsi Corporation Method and apparatus for VC-1 to MPEG-2 video transcoding
US8155194B2 (en) * 2005-08-05 2012-04-10 Lsi Corporation Method and apparatus for MPEG-2 to H.264 video transcoding
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US7860180B2 (en) * 2005-10-21 2010-12-28 Amimon Ltd OFDM modem for transmission of continuous complex numbers
US20070297612A1 (en) * 2005-10-21 2007-12-27 Meir Feder Method, device and system of encrypted wireless communication
EP1938624A4 (en) * 2005-10-21 2009-10-28 Amimon Ltd APPARATUS AND METHOD FOR WIRELESS TRANSMISSION OF UNCOMPRESSED VIDEO
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Also Published As

Publication number Publication date
AU1252899A (en) 1999-06-16
DE69803195T2 (de) 2002-08-29
HK1029694A1 (en) 2001-04-06
US6625320B1 (en) 2003-09-23
EP1010330A1 (en) 2000-06-21
JP2001525638A (ja) 2001-12-11
CN1156164C (zh) 2004-06-30
KR20010031222A (ko) 2001-04-16
CA2303516A1 (en) 1999-06-10
CA2303516C (en) 2007-09-11
JP4132664B2 (ja) 2008-08-13
AU744535B2 (en) 2002-02-28
CN1280743A (zh) 2001-01-17
EP1010330B1 (en) 2002-01-16
WO1999029113A1 (en) 1999-06-10
DE69803195D1 (de) 2002-02-21
KR100592651B1 (ko) 2006-06-23

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