BR0315332A - Codificação adaptável e progressiva de fluxos áudio - Google Patents

Codificação adaptável e progressiva de fluxos áudio

Info

Publication number
BR0315332A
BR0315332A BR0315332-0A BR0315332A BR0315332A BR 0315332 A BR0315332 A BR 0315332A BR 0315332 A BR0315332 A BR 0315332A BR 0315332 A BR0315332 A BR 0315332A
Authority
BR
Brazil
Prior art keywords
stream
original
audio
nominal
hand
Prior art date
Application number
BR0315332-0A
Other languages
English (en)
Inventor
Daniel Lecomte
Daniele Parayre-Mitzova
Original Assignee
Medialive
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 Medialive filed Critical Medialive
Publication of BR0315332A publication Critical patent/BR0315332A/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]
    • H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
    • H04N21/233—Processing of audio elementary streams
    • 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]
    • H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
    • H04N21/234—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs
    • H04N21/2347—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs involving video stream encryption
    • H04N21/23476—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs involving video stream encryption by partially encrypting, e.g. encrypting the ending portion of a movie
    • 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
    • H04N21/439—Processing of audio elementary streams
    • 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]
    • H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client 
    • H04N21/63—Control signaling related to video distribution between client, server and network components; Network processes for video distribution between server and clients or between remote clients, e.g. transmitting basic layer and enhancement layers over different transmission paths, setting up a peer-to-peer communication via Internet between remote STB's; Communication protocols; Addressing
    • H04N21/631—Multimode Transmission, e.g. transmitting basic layers and enhancement layers of the content over different transmission paths or transmitting with different error corrections, different keys or with different transmission protocols
    • 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]
    • H04N21/80—Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
    • H04N21/81—Monomedia components thereof
    • H04N21/8106—Monomedia components thereof involving special audio data, e.g. different tracks for different languages
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/16—Analogue secrecy systems; Analogue subscription systems
    • H04N7/167—Systems rendering the television signal unintelligible and subsequently intelligible
    • H04N7/1675—Providing digital key or authorisation information for generation or regeneration of the scrambling sequence

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Computer Security & Cryptography (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)

Abstract

"CODIFICAçãO ADAPTáVEL E PROGRESSIVA DE FLUXOS áUDIO". A presente invenção refere-se a um processo para a distribuição de seq³ências áudio numéricas consoante um formato de fluxo nominal, compostas de uma sucessão de quadros, compreendendo cada qual ao menos um bloco, agrupando uma variedade de coeficientes correspondentes aos elementos auditivos simples, numericamente codificados, abrangendo o processo uma etapa de modificação de ao menos um bloco do fluxo original, caracterizado por a referida etapa de modificação atuar de forma adaptável sobre o citado fluxo original, em função de um segmento ao menos de características representativas da estrutura, do conteúdo e dos parâmetros do fluxo áudio original, do perfil do destinatário e de ocorrências externas. Segundo uma forma de concretização particular, a etapa de modificação consiste em substituir uma parte dos referidos coeficientes para produzir, por um lado, um fluxo áudio principal no formato nominal e por outro lado, uma informação complementar de modificação, permitindo a reconstrução do fluxo original por meio de um decodificador do equipamento de destino, variando a abrangência das modificações e sendo determinadas pela referidas características representativas. A presente invenção refere-se igualmente a um sistema para a concretização do processo.
BR0315332-0A 2002-10-21 2003-10-21 Codificação adaptável e progressiva de fluxos áudio BR0315332A (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0213091A FR2846179B1 (fr) 2002-10-21 2002-10-21 Embrouillage adaptatif et progressif de flux audio
PCT/FR2003/050099 WO2004039053A2 (fr) 2002-10-21 2003-10-21 Embrouillage adaptatif et progressif de flux audio

Publications (1)

Publication Number Publication Date
BR0315332A true BR0315332A (pt) 2005-08-16

Family

ID=32050587

Family Applications (1)

Application Number Title Priority Date Filing Date
BR0315332-0A BR0315332A (pt) 2002-10-21 2003-10-21 Codificação adaptável e progressiva de fluxos áudio

Country Status (8)

Country Link
US (2) US8184809B2 (pt)
EP (1) EP1554878A2 (pt)
JP (2) JP5265075B2 (pt)
CN (1) CN1706192A (pt)
AU (1) AU2003292364A1 (pt)
BR (1) BR0315332A (pt)
FR (1) FR2846179B1 (pt)
WO (1) WO2004039053A2 (pt)

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PL3336839T3 (pl) 2013-10-31 2020-02-28 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Dekoder audio i sposób dostarczania zdekodowanej informacji audio z wykorzystaniem maskowania błędów modyfikującego sygnał pobudzenia w dziedzinie czasu
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Also Published As

Publication number Publication date
AU2003292364A8 (en) 2004-05-13
CN1706192A (zh) 2005-12-07
FR2846179A1 (fr) 2004-04-23
JP2013041661A (ja) 2013-02-28
WO2004039053A2 (fr) 2004-05-06
JP5265075B2 (ja) 2013-08-14
US9008306B2 (en) 2015-04-14
EP1554878A2 (fr) 2005-07-20
US20050289063A1 (en) 2005-12-29
WO2004039053A3 (fr) 2004-06-24
AU2003292364A1 (en) 2004-05-13
FR2846179B1 (fr) 2005-02-04
US20120201384A1 (en) 2012-08-09
JP5678020B2 (ja) 2015-02-25
JP2006504212A (ja) 2006-02-02
US8184809B2 (en) 2012-05-22

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Legal Events

Date Code Title Description
B11A Dismissal acc. art.33 of ipl - examination not requested within 36 months of filing
B11Y Definitive dismissal - extension of time limit for request of examination expired [chapter 11.1.1 patent gazette]