BR0316338A - Método e aparelho para codificar/decodifacar itens de dados de legendagem - Google Patents

Método e aparelho para codificar/decodifacar itens de dados de legendagem

Info

Publication number
BR0316338A
BR0316338A BR0316338-5A BR0316338A BR0316338A BR 0316338 A BR0316338 A BR 0316338A BR 0316338 A BR0316338 A BR 0316338A BR 0316338 A BR0316338 A BR 0316338A
Authority
BR
Brazil
Prior art keywords
subtitling
pixel
data
character
encoding
Prior art date
Application number
BR0316338-5A
Other languages
English (en)
Inventor
Harald Schiller
Dirk Adolph
Jobst Hoerentrup
Ralf Ostermann
Hartmut Peters
Original Assignee
Thomson Licensing 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 Thomson Licensing Sa filed Critical Thomson Licensing Sa
Publication of BR0316338A publication Critical patent/BR0316338A/pt

Links

Classifications

    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
    • H04N5/445—Receiver circuitry for the reception of television signals according to analogue transmission standards for displaying additional information
    • H04N5/44504—Circuit details of the additional information generator, e.g. details of the character or graphics signal generator, overlay mixing circuits
    • 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
    • H04N19/94—Vector quantisation
    • 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
    • H04N21/47—End-user applications
    • H04N21/488—Data services, e.g. news ticker
    • H04N21/4884—Data services, e.g. news ticker for displaying subtitles
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/08—Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band, e.g. by time division
    • H04N7/087—Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band, e.g. by time division with signal insertion during the vertical blanking interval only
    • H04N7/088—Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band, e.g. by time division with signal insertion during the vertical blanking interval only the inserted signal being digital
    • H04N7/0884—Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band, e.g. by time division with signal insertion during the vertical blanking interval only the inserted signal being digital for the transmission of additional display-information, e.g. menu for programme or channel selection
    • H04N7/0885—Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band, e.g. by time division with signal insertion during the vertical blanking interval only the inserted signal being digital for the transmission of additional display-information, e.g. menu for programme or channel selection for the transmission of subtitles
    • 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
    • H04N21/41—Structure of client; Structure of client peripherals
    • H04N21/426—Internal components of the client ; Characteristics thereof
    • H04N21/42653—Internal components of the client ; Characteristics thereof for processing graphics

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Human Computer Interaction (AREA)
  • Computer Graphics (AREA)
  • Controls And Circuits For Display Device (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)
  • Television Systems (AREA)
  • Television Signal Processing For Recording (AREA)

Abstract

"MéTODO E APARELHO PARA CODIFICAR/DECODIFICAR ITENS DE DADOS DE LEGENDAGEM". Legendagem pode ser baseada tanto em dados de pixel como em dados de carácter. Dados de caracteres permitem codificação bastante eficiente, mas, apenas a partir de cadeias de caracteres, a legendagem não pode ser convertida em uma representação gráfica para ser sobreposta no vídeo. O conjunto de caracteres visados, fonte e, por exemplo, tamanho de fonte, tanto deve ser codificado explicitamente dentro do fluxo de bits de legendagem, bem como se deve fazer uma suposição implicita a respeito dele. Em legendagem com base em pixel, quadros de legendagem são levados diretamente na forma de representações gráficas, descrevendo-os como regiões (tipicamente retangulares) de valores de pixel na tela AV, às custa de considerável aumento na largura de banda para os dados de legendagem. De acordo com a invenção, é necessária uma memória de fontes, que permite uma concretização eficiente da escrita de legendagem com base em pixel, em virtude de os glifos precisarem ser transmitidos apenas uma vez e, em seguida, serem referenciados por referências de caracteres relativamente compactos durante o evento AV. Assim, a invenção combina as vantagens de esquemas de legendagem baseada em pixel e baseada em carácter puro, evitando-se ao mesmo tempo a maior parte dos seus respectivos inconvenientes.
BR0316338-5A 2002-11-18 2003-11-06 Método e aparelho para codificar/decodifacar itens de dados de legendagem BR0316338A (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP02090382A EP1420580A1 (en) 2002-11-18 2002-11-18 Method and apparatus for coding/decoding items of subtitling data
PCT/EP2003/012368 WO2004047431A1 (en) 2002-11-18 2003-11-06 Method and apparatus for coding/decoding items of subtitling data

Publications (1)

Publication Number Publication Date
BR0316338A true BR0316338A (pt) 2005-09-27

Family

ID=32116316

Family Applications (1)

Application Number Title Priority Date Filing Date
BR0316338-5A BR0316338A (pt) 2002-11-18 2003-11-06 Método e aparelho para codificar/decodifacar itens de dados de legendagem

Country Status (9)

Country Link
US (1) US20060056819A1 (pt)
EP (2) EP1420580A1 (pt)
JP (1) JP2006515965A (pt)
KR (1) KR20050086692A (pt)
CN (1) CN100471242C (pt)
AU (1) AU2003293661A1 (pt)
BR (1) BR0316338A (pt)
MX (1) MXPA05005298A (pt)
WO (1) WO2004047431A1 (pt)

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Also Published As

Publication number Publication date
CN1729684A (zh) 2006-02-01
MXPA05005298A (es) 2005-07-25
WO2004047431A1 (en) 2004-06-03
CN100471242C (zh) 2009-03-18
JP2006515965A (ja) 2006-06-08
AU2003293661A1 (en) 2004-06-15
EP1563677A1 (en) 2005-08-17
KR20050086692A (ko) 2005-08-30
US20060056819A1 (en) 2006-03-16
EP1420580A1 (en) 2004-05-19

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Legal Events

Date Code Title Description
B08F Application dismissed because of non-payment of annual fees [chapter 8.6 patent gazette]

Free format text: REFERENTE AS 7A E 8A ANUIDADES.

B08K Patent lapsed as no evidence of payment of the annual fee has been furnished to inpi [chapter 8.11 patent gazette]

Free format text: REFERENTE AO DESPACHO 8.6 PUBLICADO NA RPI 2160 DE 29/05/2012.