BRPI0406633A - Método e aparelho para a sincronização de vìdeo digital utilizando um pacote de radiofaróis - Google Patents

Método e aparelho para a sincronização de vìdeo digital utilizando um pacote de radiofaróis

Info

Publication number
BRPI0406633A
BRPI0406633A BR0406633-2A BRPI0406633A BRPI0406633A BR PI0406633 A BRPI0406633 A BR PI0406633A BR PI0406633 A BRPI0406633 A BR PI0406633A BR PI0406633 A BRPI0406633 A BR PI0406633A
Authority
BR
Brazil
Prior art keywords
time
time stamp
adjustments
digital video
converter
Prior art date
Application number
BR0406633-2A
Other languages
English (en)
Inventor
John Gervais
Daniel Wetzel
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 BRPI0406633A publication Critical patent/BRPI0406633A/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]
    • H04N21/80—Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
    • H04N21/85—Assembly of content; Generation of multimedia applications
    • H04N21/854—Content authoring
    • H04N21/8547—Content authoring involving timestamps for synchronizing content
    • 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
    • H04J—MULTIPLEX COMMUNICATION
    • H04J3/00—Time-division multiplex systems
    • H04J3/02—Details
    • H04J3/06—Synchronising arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J3/00—Time-division multiplex systems
    • H04J3/02—Details
    • H04J3/06—Synchronising arrangements
    • H04J3/0635—Clock or time synchronisation in a network
    • H04J3/0638—Clock or time synchronisation among nodes; Internode synchronisation
    • H04J3/0658—Clock or time synchronisation among packet nodes
    • H04J3/0661—Clock or time synchronisation among packet nodes using timestamps
    • H04J3/0664—Clock or time synchronisation among packet nodes using timestamps unidirectional timestamps
    • 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
    • H04N21/4104—Peripherals receiving signals from specially adapted client devices
    • H04N21/4126—The peripheral being portable, e.g. PDAs or mobile phones
    • 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
    • H04N21/414—Specialised client platforms, e.g. receiver in car or embedded in a mobile appliance
    • H04N21/41407—Specialised client platforms, e.g. receiver in car or embedded in a mobile appliance embedded in a portable device, e.g. video client on a mobile phone, PDA, laptop
    • 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
    • H04N21/434—Disassembling of a multiplex stream, e.g. demultiplexing audio and video streams, extraction of additional data from a video stream; Remultiplexing of multiplex streams; Extraction or processing of SI; Disassembling of packetised elementary stream
    • 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
    • H04N21/436—Interfacing a local distribution network, e.g. communicating with another STB or one or more peripheral devices inside the home
    • H04N21/43615—Interfacing a Home Network, e.g. for connecting the client to a plurality of peripherals
    • 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
    • H04N21/436—Interfacing a local distribution network, e.g. communicating with another STB or one or more peripheral devices inside the home
    • H04N21/4363—Adapting the video stream to a specific local network, e.g. a Bluetooth® network
    • H04N21/43637—Adapting the video stream to a specific local network, e.g. a Bluetooth® network involving a wireless protocol, e.g. Bluetooth®, RF or wireless LAN [IEEE 802.11]
    • 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
    • H04N21/44—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs
    • H04N21/44004—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs involving video buffer management, e.g. video decoder buffer or video display buffer
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
    • H04W84/10—Small scale networks; Flat hierarchical networks
    • H04W84/12—WLAN [Wireless Local Area Networks]

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • General Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Small-Scale Networks (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)

Abstract

"MéTODO E APARELHO PARA A SINCRONIZAçãO DE VìDEO DIGITAL UTILIZANDO UM PACOTE DE RADIOFARóIS". A presente invenção utiliza um receptor de difusão configurado de modo a receber pacotes digitais que contêm selos de hora. Quando um selo de hora é detectado no conversor, uma base de hora é comparada no sentido de determinar qualquer diferença de hora entre o selo de hora corrente e o último selo de hora de modo que ajustes possam ser feitos a fim de sincronizar a recepção de dados com o equipamento injetor de sinais. O conversor comunica ainda a diferença através de um ponto de acesso sem fio que, além de transmitir o seu radiofarol de cronometragem interno, também envia a diferença de hora para o seu conjunto de serviços básicos de modo que ajustes possam ser feitos em sua base de hora. Estas mudanças na velocidade do radiofarol de ponto de acesso sem fio e o efeito sobre o oscilador VCXO de estação sem fio têm um efeito correspondente sobre a velocidade na qual os dados de vídeo são consumidos e, portanto, reduzem o risco de paralisação / estouro do armazenador temporário.
BR0406633-2A 2003-01-09 2004-01-09 Método e aparelho para a sincronização de vìdeo digital utilizando um pacote de radiofaróis BRPI0406633A (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US43909203P 2003-01-09 2003-01-09
PCT/US2004/000515 WO2004064301A2 (en) 2003-01-09 2004-01-09 Method and apparatus for synchronizing digital video using a beacon packet

Publications (1)

Publication Number Publication Date
BRPI0406633A true BRPI0406633A (pt) 2005-12-06

Family

ID=32713430

Family Applications (1)

Application Number Title Priority Date Filing Date
BR0406633-2A BRPI0406633A (pt) 2003-01-09 2004-01-09 Método e aparelho para a sincronização de vìdeo digital utilizando um pacote de radiofaróis

Country Status (8)

Country Link
US (1) US7940801B2 (pt)
EP (1) EP1582020A4 (pt)
JP (1) JP4563375B2 (pt)
KR (1) KR20050095606A (pt)
CN (1) CN1723644A (pt)
BR (1) BRPI0406633A (pt)
MX (1) MXPA05007451A (pt)
WO (1) WO2004064301A2 (pt)

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CN100421495C (zh) * 2005-06-27 2008-09-24 华为技术有限公司 在设备管理中同步操作时间的方法及终端设备
WO2008015244A1 (de) * 2006-08-03 2008-02-07 Nokia Siemens Networks Gmbh & Co. Kg Verfahren, sender, empfänger und zeitmass-generator zum zeitlichen synchronisieren eines ersten und eines zweiten datenstroms zu einem synchronisationszeitpunkt
US7738611B2 (en) * 2006-08-07 2010-06-15 Harris Stratex Networks, Inc. Remote monitoring and calibration of system reference clock using network timing reference
WO2008041232A2 (en) * 2006-10-06 2008-04-10 Amimon Ltd. Device, method and system of dual-mode wireless communication
GB0711833D0 (en) * 2007-06-18 2007-07-25 Nokia Siemens Networks Oy A method for providing a plurality of services
TWI367658B (en) * 2007-07-04 2012-07-01 Realtek Semiconductor Corp A receiving device, a signal processing system and a signal receiving method
GB201116521D0 (en) * 2011-09-23 2011-11-09 Imagination Tech Ltd Method and apparatus for time synchronisation in wireless networks
US9819604B2 (en) * 2013-07-31 2017-11-14 Nvidia Corporation Real time network adaptive low latency transport stream muxing of audio/video streams for miracast
GB2536827B (en) 2014-05-09 2017-07-05 Imagination Tech Ltd Time stamp replication within a wireless network

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BR0115959A (pt) * 2000-11-14 2005-05-03 Symbol Technologies Inc Método e aparelhos para identificação de localização de objeto em rede de comunicação
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Also Published As

Publication number Publication date
EP1582020A2 (en) 2005-10-05
US7940801B2 (en) 2011-05-10
US20060062195A1 (en) 2006-03-23
JP2006520123A (ja) 2006-08-31
CN1723644A (zh) 2006-01-18
KR20050095606A (ko) 2005-09-29
WO2004064301A3 (en) 2004-11-25
WO2004064301A2 (en) 2004-07-29
MXPA05007451A (es) 2005-09-12
JP4563375B2 (ja) 2010-10-13
EP1582020A4 (en) 2011-07-27

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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 6A, 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 2159 DE 22/05/2012.

B15K Others concerning applications: alteration of classification

Ipc: H04N 21/43 (2011.01), H04J 3/06 (2006.01), H04N 21