JP4563375B2 - ビーコンパケットを用いるデジタルビデオ同期方法および装置 - Google Patents
ビーコンパケットを用いるデジタルビデオ同期方法および装置 Download PDFInfo
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- JP4563375B2 JP4563375B2 JP2006500876A JP2006500876A JP4563375B2 JP 4563375 B2 JP4563375 B2 JP 4563375B2 JP 2006500876 A JP2006500876 A JP 2006500876A JP 2006500876 A JP2006500876 A JP 2006500876A JP 4563375 B2 JP4563375 B2 JP 4563375B2
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- 238000010586 diagram Methods 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 101100269939 Buchnera aphidicola subsp. Baizongia pistaciae (strain Bp) apaH gene Proteins 0.000 description 1
- VYLDEYYOISNGST-UHFFFAOYSA-N bissulfosuccinimidyl suberate Chemical compound O=C1C(S(=O)(=O)O)CC(=O)N1OC(=O)CCCCCCC(=O)ON1C(=O)C(S(O)(=O)=O)CC1=O VYLDEYYOISNGST-UHFFFAOYSA-N 0.000 description 1
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Classifications
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- 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)
Description
Claims (5)
- デジタルビデオデータをワイヤレスで送受信する装置であって、
ビデオ送信の時間を示すタイムスタンプを受信する手段と、
前記タイムスタンプとその前のタイムスタンプの間の相対的時間差を決定する手段と、
一送信機能としてタイムベースを有するトランスミッタに前記相対的時間差を通信する手段と、
前記相対的時間差に応じて前記タイムベースを前記トランスミッタに調整させる手段とを有する装置。 - 前記トランスミッタは、前記相対的時間差に応じて調整された前記タイムベースを1以上のレシーバに通信する、請求項1に記載の装置。
- 前記1以上のレシーバは、前記相対的時間差に応じて各レシーバのタイムベースを調整する、請求項2に記載の装置。
- 相対的時間差に応じてタイムベースを調整することによりデジタルビデオを同期する方法であって、
タイムスタンプとその前のタイムスタンプとの間の相対的時間差を決定する段階と、
一送信機能としてタイムベースを有するトランスミッタに前記相対的時間差を通信する段階と、
1以上のワイヤレスステーションレシーバに前記相対的時間差を送信する段階とを有し、
前記1以上のワイヤレスステーションレシーバの各々は前記相対的時間差に応じて前記タイムベースを調整する方法。 - 前記決定する段階は、現在およびその前のAUX SCRの間の相対的時間差を、現在およびその前のローカルVCXOクロックにラッチされた値と決定する段階を含み、
前記方法はさらに、前記ローカルVCXOのクロックを調整して、セットトップのデータレートを同期させる段階を含み、
前記送信する段階はさらに、前記調整されたVCXOクロックをMACチップに出力する段階を含み、
前記方法はさらに、前記調整されたVCXOクロックに従ってビーコンパケットを調整する段階を含み、
前記送信する段階はさらに、前記調整されたビーコンパケットをワイヤレスステーションレシーバに送信する段階を含み、
前記方法はさらに、前記調整されたビーコンを用いて、前記ワイヤレスステーションレシーバのローカルVCXOクロックのレートを調節する段階を有する、請求項4に記載の方法。
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 (2)
Publication Number | Publication Date |
---|---|
JP2006520123A JP2006520123A (ja) | 2006-08-31 |
JP4563375B2 true JP4563375B2 (ja) | 2010-10-13 |
Family
ID=32713430
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2006500876A Expired - Fee Related JP4563375B2 (ja) | 2003-01-09 | 2004-01-09 | ビーコンパケットを用いるデジタルビデオ同期方法および装置 |
Country Status (8)
Country | Link |
---|---|
US (1) | US7940801B2 (ja) |
EP (1) | EP1582020A4 (ja) |
JP (1) | JP4563375B2 (ja) |
KR (1) | KR20050095606A (ja) |
CN (1) | CN1723644A (ja) |
BR (1) | BRPI0406633A (ja) |
MX (1) | MXPA05007451A (ja) |
WO (1) | WO2004064301A2 (ja) |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
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US7362767B2 (en) * | 2003-07-22 | 2008-04-22 | Lsi Logic Corporation | Integrated circuit with on-chip clock frequency matching to upstream head end equipment |
US7724766B2 (en) * | 2005-03-31 | 2010-05-25 | Siemens Aktiengesellschaft | High-density wireless local area network |
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 |
US7852818B2 (en) * | 2006-10-06 | 2010-12-14 | 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 |
GB2525929B (en) * | 2014-05-09 | 2016-08-10 | Imagination Tech Ltd | Time stamp replication within a wireless network |
Family Cites Families (16)
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WO1996031033A2 (en) * | 1995-03-29 | 1996-10-03 | Philips Electronics N.V. | System for providing a predetermined timing relation between inputting and outputting of data; transmitter and receiver for such a system |
JPH09270779A (ja) | 1996-04-01 | 1997-10-14 | Fuji Electric Co Ltd | データ同期方式 |
US7006446B1 (en) * | 1999-01-22 | 2006-02-28 | General Instrument Corporation | Detection of duplicate participants in a two-way modem environment |
JP2000332830A (ja) | 1999-03-17 | 2000-11-30 | Sony Corp | 通信装置、通信方法、および記録媒体 |
US6493832B1 (en) * | 1999-03-17 | 2002-12-10 | Sony Corporation | Communication apparatus which handles a time stamp |
US7367042B1 (en) * | 2000-02-29 | 2008-04-29 | Goldpocket Interactive, Inc. | Method and apparatus for hyperlinking in a television broadcast |
CA2419796C (en) * | 2000-11-14 | 2010-03-30 | Symbol Technologies, Inc. | Methods and apparatus for identifying asset location in communication networks |
EP1366586B1 (en) * | 2001-03-09 | 2008-08-13 | Thomson Licensing | Jitter prevention in a digital communication network |
US6967944B2 (en) * | 2001-03-30 | 2005-11-22 | Koninklijke Philips Electronics N.V. | Increasing link capacity via concurrent transmissions in centralized wireless LANs |
CN1462559A (zh) * | 2001-05-14 | 2003-12-17 | 皇家菲利浦电子有限公司 | 通过无抖动解码的atm网络的mpeg数据包传输 |
US7043651B2 (en) * | 2001-09-18 | 2006-05-09 | Nortel Networks Limited | Technique for synchronizing clocks in a network |
US7120092B2 (en) * | 2002-03-07 | 2006-10-10 | Koninklijke Philips Electronics N. V. | System and method for performing clock synchronization of nodes connected via a wireless local area network |
US7151945B2 (en) * | 2002-03-29 | 2006-12-19 | Cisco Systems Wireless Networking (Australia) Pty Limited | Method and apparatus for clock synchronization in a wireless network |
US20040037366A1 (en) * | 2002-08-23 | 2004-02-26 | Magis Networks, Inc. | Apparatus and method for multicarrier modulation and demodulation |
US7110734B2 (en) * | 2002-09-05 | 2006-09-19 | Maxim Integrated Products Inc. | DC offset cancellation in a zero if receiver |
JP2006510253A (ja) * | 2002-12-12 | 2006-03-23 | コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ | 「仮想クロック」を用いてマルチメディア・ストリーミング・サーバの伝送レートを適合させるためのシステムおよび方法 |
-
2004
- 2004-01-09 BR BR0406633-2A patent/BRPI0406633A/pt not_active IP Right Cessation
- 2004-01-09 MX MXPA05007451A patent/MXPA05007451A/es not_active Application Discontinuation
- 2004-01-09 US US10/541,764 patent/US7940801B2/en active Active
- 2004-01-09 WO PCT/US2004/000515 patent/WO2004064301A2/en active Application Filing
- 2004-01-09 JP JP2006500876A patent/JP4563375B2/ja not_active Expired - Fee Related
- 2004-01-09 EP EP04701246A patent/EP1582020A4/en not_active Withdrawn
- 2004-01-09 CN CNA2004800019074A patent/CN1723644A/zh active Pending
- 2004-01-09 KR KR1020057012840A patent/KR20050095606A/ko not_active Application Discontinuation
Also Published As
Publication number | Publication date |
---|---|
CN1723644A (zh) | 2006-01-18 |
US7940801B2 (en) | 2011-05-10 |
US20060062195A1 (en) | 2006-03-23 |
WO2004064301A3 (en) | 2004-11-25 |
KR20050095606A (ko) | 2005-09-29 |
MXPA05007451A (es) | 2005-09-12 |
EP1582020A2 (en) | 2005-10-05 |
JP2006520123A (ja) | 2006-08-31 |
BRPI0406633A (pt) | 2005-12-06 |
WO2004064301A2 (en) | 2004-07-29 |
EP1582020A4 (en) | 2011-07-27 |
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