BR0312659A - Método e aparelho para uma especificação de sincronismo interimagem de acurácia variável para codificação de vìdeo digital - Google Patents

Método e aparelho para uma especificação de sincronismo interimagem de acurácia variável para codificação de vìdeo digital

Info

Publication number
BR0312659A
BR0312659A BR0312659-5A BR0312659A BR0312659A BR 0312659 A BR0312659 A BR 0312659A BR 0312659 A BR0312659 A BR 0312659A BR 0312659 A BR0312659 A BR 0312659A
Authority
BR
Brazil
Prior art keywords
encoded
time difference
display time
picture
video encoding
Prior art date
Application number
BR0312659-5A
Other languages
English (en)
Inventor
Barin G Haskell
David W Singer
Adriana Dumitras
Atul Puri
Original Assignee
Apple Computer
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
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=30117972&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=BR0312659(A) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Apple Computer filed Critical Apple Computer
Publication of BR0312659A publication Critical patent/BR0312659A/pt

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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
    • H04N19/50—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
    • H04N19/513—Processing of motion vectors
    • 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
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T9/00—Image coding
    • G06T9/005—Statistical coding, e.g. Huffman, run length 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
    • H04N19/102—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
    • H04N19/13—Adaptive entropy coding, e.g. adaptive variable length coding [AVLC] or context adaptive binary arithmetic coding [CABAC]
    • 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
    • H04N19/132—Sampling, masking or truncation of coding units, e.g. adaptive resampling, frame skipping, frame interpolation or high-frequency transform coefficient masking
    • 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
    • H04N19/169—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding
    • H04N19/17—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being an image region, e.g. an object
    • H04N19/176—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being an image region, e.g. an object the region being a block, e.g. a macroblock
    • 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
    • H04N19/42—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals characterised by implementation details or hardware specially adapted for video compression or decompression, e.g. dedicated software implementation
    • H04N19/43—Hardware specially adapted for motion estimation or 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
    • H04N19/46—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
    • H04N19/50—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
    • 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
    • H04N19/50—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding
    • H04N19/587—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding involving temporal sub-sampling or interpolation, e.g. decimation or subsequent interpolation of pictures in a video sequence
    • 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
    • H04N19/90—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using coding techniques not provided for in groups H04N19/10-H04N19/85, e.g. fractals
    • H04N19/91—Entropy coding, e.g. variable length coding [VLC] or arithmetic coding
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/4302—Content synchronisation processes, e.g. decoder synchronisation
    • H04N21/4305—Synchronising client clock from received content stream, e.g. locking decoder clock with encoder clock, extraction of the PCR packets
    • 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
    • H04N19/44—Decoders specially adapted therefor, e.g. video decoders which are asymmetric with respect to the encoder
    • 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
    • H04N19/577—Motion compensation with bidirectional frame interpolation, i.e. using B-pictures

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (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)
  • Television Signal Processing For Recording (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
  • Image Processing (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Synchronizing For Television (AREA)
  • Studio Circuits (AREA)

Abstract

"MéTODO E APARELHO PARA UMA ESPECIFICAçãO DE SINCRONISMO INTERIMAGEM DE ACURáCIA VARIáVEL PARA CODIFICAçãO DE VìDEO DIGITAL". A presente invenção refere-se a um método e um aparelho para uma especificação de sincronismo de interimagem de acurácia variável para codificação de vídeo digital que são mostrados. Especificamente, a presente invenção mostra um sistema que permite um sincronismo relativo de imagens de vídeo próximas a serem codificadas de uma maneira muito eficiente. Em uma modalidade, a diferença de tempo de exibição entre uma imagem de vídeo atual (105) e uma imagem de vídeo próxima é determinada. A diferença de tempo de exibição então é codificada (180) em uma representação digital da imagem de vídeo. Em uma modalidade preferida, a imagem de vídeo próxima é a imagem armazenada mais recentemente transmitida. Para uma eficiência de codificação, a diferença de tempo de exibição pode ser codificada usando-se um sistema de codificação de comprimento variável ou uma codificação aritmética. Em uma modalidade alternativa, a diferença de tempo de exibição é codificada como uma potência de dois para redução do número de bits transmitidos.
BR0312659-5A 2002-07-15 2003-07-11 Método e aparelho para uma especificação de sincronismo interimagem de acurácia variável para codificação de vìdeo digital BR0312659A (pt)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US39636302P 2002-07-15 2002-07-15
US10/291,320 US7088776B2 (en) 2002-07-15 2002-11-08 Method and apparatus for variable accuracy inter-picture timing specification for digital video encoding
PCT/US2003/021714 WO2004008654A1 (en) 2002-07-15 2003-07-11 Method and apparatus for variable accuracy inter-picture timing specification for digital video encoding

Publications (1)

Publication Number Publication Date
BR0312659A true BR0312659A (pt) 2005-04-26

Family

ID=30117972

Family Applications (2)

Application Number Title Priority Date Filing Date
BRPI0312659-5A BRPI0312659B1 (pt) 2002-07-15 2003-07-11 Método de especificação de informação de vídeo digital e sistema de codificação para codificar informação de vídeo digital
BR0312659-5A BR0312659A (pt) 2002-07-15 2003-07-11 Método e aparelho para uma especificação de sincronismo interimagem de acurácia variável para codificação de vìdeo digital

Family Applications Before (1)

Application Number Title Priority Date Filing Date
BRPI0312659-5A BRPI0312659B1 (pt) 2002-07-15 2003-07-11 Método de especificação de informação de vídeo digital e sistema de codificação para codificar informação de vídeo digital

Country Status (17)

Country Link
US (26) US7088776B2 (pt)
EP (44) EP2343817A1 (pt)
JP (6) JP4620586B2 (pt)
KR (8) KR100850810B1 (pt)
CN (10) CN102892006B (pt)
AT (1) ATE487282T1 (pt)
AU (1) AU2003256494B2 (pt)
BR (2) BRPI0312659B1 (pt)
CA (4) CA2820164C (pt)
DE (1) DE60334804D1 (pt)
DK (5) DK1532746T3 (pt)
ES (5) ES2393544T3 (pt)
HK (10) HK1076207A1 (pt)
NO (3) NO338810B1 (pt)
PT (5) PT1532746E (pt)
SG (4) SG179316A1 (pt)
WO (1) WO2004008654A1 (pt)

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