CA2328437A1 - Method of and apparatus for isochronous data communication - Google Patents
Method of and apparatus for isochronous data communication Download PDFInfo
- Publication number
- CA2328437A1 CA2328437A1 CA002328437A CA2328437A CA2328437A1 CA 2328437 A1 CA2328437 A1 CA 2328437A1 CA 002328437 A CA002328437 A CA 002328437A CA 2328437 A CA2328437 A CA 2328437A CA 2328437 A1 CA2328437 A1 CA 2328437A1
- Authority
- CA
- Canada
- Prior art keywords
- packet
- time
- timestamp
- receiver
- isochronous data
- Prior art date
- Legal status (The legal status 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 status listed.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q11/00—Selecting arrangements for multiplex systems
- H04Q11/04—Selecting arrangements for multiplex systems for time-division multiplexing
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/40—Bus networks
- H04L12/40052—High-speed IEEE 1394 serial bus
- H04L12/40058—Isochronous transmission
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J3/00—Time-division multiplex systems
- H04J3/02—Details
- H04J3/06—Synchronising arrangements
- H04J3/062—Synchronisation of signals having the same nominal but fluctuating bit rates, e.g. using buffers
- H04J3/0632—Synchronisation of packets and cells, e.g. transmission of voice via a packet network, circuit emulation service [CES]
-
- 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
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/40—Bus networks
- H04L12/40052—High-speed IEEE 1394 serial bus
- H04L12/40071—Packet processing; Packet format
-
- 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
- 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 or multiplex stream to a specific local network, e.g. a IEEE 1394 or Bluetooth® network
- H04N21/43632—Adapting the video or multiplex stream to a specific local network, e.g. a IEEE 1394 or Bluetooth® network involving a wired protocol, e.g. IEEE 1394
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q11/00—Selecting arrangements for multiplex systems
- H04Q11/04—Selecting arrangements for multiplex systems for time-division multiplexing
- H04Q11/0428—Integrated services digital network, i.e. systems for transmission of different types of digitised signals, e.g. speech, data, telecentral, television signals
- H04Q11/0478—Provisions for broadband connections
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/54—Store-and-forward switching systems
- H04L12/56—Packet switching systems
- H04L12/5601—Transfer mode dependent, e.g. ATM
- H04L2012/5614—User Network Interface
- H04L2012/5616—Terminal equipment, e.g. codecs, synch.
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/54—Store-and-forward switching systems
- H04L12/56—Packet switching systems
- H04L12/5601—Transfer mode dependent, e.g. ATM
- H04L2012/5638—Services, e.g. multimedia, GOS, QOS
- H04L2012/5646—Cell characteristics, e.g. loss, delay, jitter, sequence integrity
- H04L2012/5649—Cell delay or jitter
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/54—Store-and-forward switching systems
- H04L12/56—Packet switching systems
- H04L12/5601—Transfer mode dependent, e.g. ATM
- H04L2012/5638—Services, e.g. multimedia, GOS, QOS
- H04L2012/5664—Support of Video, e.g. MPEG
Abstract
In order to enable isochronous data to be transmitted over communications systems which may introduce timing jitter each packet of isochronous data is provided with a timestamp which indicates to a receiver the time at which a packet should be processed. The receiver notes the time the first packet of a data stream arrives and adds a given offset time which is greater than or equal to the maximum jitter to produce a time t1. Each succeeding packet is processed at a time t- t1 +(Tn-T1), where T1 is the timestamp in the first data packet and Tn is the timestamp in the current packet. Thus the processing at the receiver is dependent on the relative times of arrival of the packets rather than the absolute times defined by the timestamps.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GBGB9903144.5A GB9903144D0 (en) | 1998-08-05 | 1999-02-12 | Method and apparatus for communicating isochronous data |
GB9903144.5 | 1999-02-12 | ||
PCT/EP2000/000512 WO2000048421A1 (en) | 1999-02-12 | 2000-01-24 | Method of and apparatus for isochronous data communication |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2328437A1 true CA2328437A1 (en) | 2000-08-17 |
CA2328437C CA2328437C (en) | 2007-09-25 |
Family
ID=10847591
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002328437A Expired - Lifetime CA2328437C (en) | 1999-02-12 | 2000-01-24 | Method of and apparatus for isochronous data communication |
Country Status (11)
Country | Link |
---|---|
US (2) | US6661811B1 (en) |
EP (1) | EP1072166B1 (en) |
JP (1) | JP4896293B2 (en) |
KR (1) | KR100605238B1 (en) |
CN (1) | CN1270579C (en) |
AT (1) | ATE313929T1 (en) |
CA (1) | CA2328437C (en) |
DE (1) | DE60024932T2 (en) |
ES (1) | ES2254134T3 (en) |
TW (1) | TW498649B (en) |
WO (1) | WO2000048421A1 (en) |
Families Citing this family (55)
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US6751228B1 (en) * | 1999-03-23 | 2004-06-15 | Yamaha Corporation | Packet handler of audio data by isochronous mode |
DE60022082T2 (en) * | 1999-12-08 | 2006-06-29 | Broadcom Corp., Irvine | SYNCHRONIZED TRANSPORT THROUGH NON-SYNCHRONOUS NETWORKS |
FI108489B (en) * | 1999-12-30 | 2002-01-31 | Nokia Corp | Synchronization in a packet-switched communication system |
JP2001230821A (en) * | 2000-02-16 | 2001-08-24 | Sony Corp | Data repeater and method, and serving medium |
US6975655B2 (en) * | 2000-04-07 | 2005-12-13 | Broadcom Corporation | Method of controlling data sampling clocking of asynchronous network nodes in a frame-based communications network |
US6895009B1 (en) * | 2000-04-07 | 2005-05-17 | Omneon Video Networks | Method of generating timestamps for isochronous data |
US6816492B1 (en) * | 2000-07-31 | 2004-11-09 | Cisco Technology, Inc. | Resequencing packets at output ports without errors using packet timestamps and timestamp floors |
US6888806B1 (en) * | 2000-11-22 | 2005-05-03 | Motorola, Inc. | Method and system for scheduling packets for transmission from a wireless communication platform |
US7142566B1 (en) * | 2001-02-15 | 2006-11-28 | Cisco Systems Canada Co. | Jitterless processing of bitstreams |
WO2002093938A1 (en) * | 2001-05-14 | 2002-11-21 | Koninklijke Philips Electronics N.V. | Mpeg data packet transmission through an atm network with jitter free decoding |
US6836514B2 (en) * | 2001-07-10 | 2004-12-28 | Motorola, Inc. | Method for the detection and recovery of errors in the frame overhead of digital video decoding systems |
US7043651B2 (en) * | 2001-09-18 | 2006-05-09 | Nortel Networks Limited | Technique for synchronizing clocks in a network |
JP3932452B2 (en) * | 2001-09-27 | 2007-06-20 | ソニー株式会社 | Communication apparatus and method, and program |
KR100782234B1 (en) * | 2001-10-08 | 2007-12-05 | 엘지전자 주식회사 | Method processing broadcasting error unit of personal video recoder |
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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 |
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JP3702261B2 (en) * | 2002-09-30 | 2005-10-05 | 株式会社東芝 | Time stamp correction circuit and correction method |
EP1455472A1 (en) * | 2003-03-07 | 2004-09-08 | STMicroelectronics Limited | Timing control for packet streams |
JP3858002B2 (en) * | 2003-05-23 | 2006-12-13 | 三洋電機株式会社 | Wireless transmission system |
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US7712004B1 (en) * | 2003-09-30 | 2010-05-04 | Emc Corporation | Method of and system for error checking in a data storage system |
US7542485B2 (en) * | 2003-11-19 | 2009-06-02 | Avaya, Inc. | Time and data synchronization between network devices |
WO2005067252A1 (en) * | 2004-01-07 | 2005-07-21 | Matsushita Electric Industrial Co., Ltd. | Data reception device |
US7525952B1 (en) * | 2004-01-07 | 2009-04-28 | Cisco Technology, Inc. | Method and apparatus for determining the source of user-perceived voice quality degradation in a network telephony environment |
JP2005284600A (en) * | 2004-03-29 | 2005-10-13 | Toshiba Corp | Time stamp correction device and time stamp correction system |
DE102004018200A1 (en) * | 2004-04-15 | 2005-11-10 | Deutsche Thomson-Brandt Gmbh | A method for processing a sequence of data packets in a receiver device and receiver device |
US7710965B2 (en) * | 2004-11-23 | 2010-05-04 | Broadlogic Network Technologies Inc. | Method and system for multi-program clock recovery and timestamp correction |
US7809131B1 (en) * | 2004-12-23 | 2010-10-05 | Arcsight, Inc. | Adjusting sensor time in a network security system |
EP1874053A1 (en) * | 2005-04-08 | 2008-01-02 | Matsushita Electric Industrial Co., Ltd. | Transfer device |
KR100757465B1 (en) * | 2005-07-22 | 2007-09-11 | 삼성전자주식회사 | The audio/video device which controls the syncronazation of the video signal and audio signal using time information |
CN100428691C (en) * | 2005-12-22 | 2008-10-22 | 中山大学 | Time synchronous device and synchronous method of digital household network |
US7626942B2 (en) * | 2006-11-22 | 2009-12-01 | Spectra Link Corp. | Method of conducting an audio communications session using incorrect timestamps |
JP5079342B2 (en) | 2007-01-22 | 2012-11-21 | ルネサスエレクトロニクス株式会社 | Multiprocessor device |
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KR102272339B1 (en) * | 2014-11-17 | 2021-07-02 | 삼성전자주식회사 | A method for displaying contents and an electronic device therefor |
CN108227561A (en) * | 2017-12-08 | 2018-06-29 | 中国航空工业集团公司成都飞机设计研究所 | A kind of markers alignment schemes of multiplicated system data acquisition |
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CN111447026B (en) * | 2019-01-17 | 2021-09-14 | 华为技术有限公司 | Method and apparatus for processing data |
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-
2000
- 2000-01-20 US US09/488,031 patent/US6661811B1/en not_active Expired - Lifetime
- 2000-01-24 DE DE60024932T patent/DE60024932T2/en not_active Expired - Lifetime
- 2000-01-24 WO PCT/EP2000/000512 patent/WO2000048421A1/en active IP Right Grant
- 2000-01-24 CN CNB008005486A patent/CN1270579C/en not_active Expired - Lifetime
- 2000-01-24 KR KR1020007011319A patent/KR100605238B1/en active IP Right Grant
- 2000-01-24 AT AT00902626T patent/ATE313929T1/en not_active IP Right Cessation
- 2000-01-24 ES ES00902626T patent/ES2254134T3/en not_active Expired - Lifetime
- 2000-01-24 CA CA002328437A patent/CA2328437C/en not_active Expired - Lifetime
- 2000-01-24 JP JP2000599232A patent/JP4896293B2/en not_active Expired - Lifetime
- 2000-01-24 EP EP00902626A patent/EP1072166B1/en not_active Expired - Lifetime
- 2000-01-26 TW TW089101310A patent/TW498649B/en not_active IP Right Cessation
-
2003
- 2003-12-04 US US10/728,266 patent/US7508845B2/en active Active
Also Published As
Publication number | Publication date |
---|---|
EP1072166B1 (en) | 2005-12-21 |
DE60024932T2 (en) | 2006-08-24 |
KR100605238B1 (en) | 2006-07-28 |
US7508845B2 (en) | 2009-03-24 |
CN1300517A (en) | 2001-06-20 |
KR20010042630A (en) | 2001-05-25 |
US6661811B1 (en) | 2003-12-09 |
DE60024932D1 (en) | 2006-01-26 |
US20040153716A1 (en) | 2004-08-05 |
ES2254134T3 (en) | 2006-06-16 |
JP2003519448A (en) | 2003-06-17 |
CA2328437C (en) | 2007-09-25 |
TW498649B (en) | 2002-08-11 |
EP1072166A1 (en) | 2001-01-31 |
WO2000048421A1 (en) | 2000-08-17 |
JP4896293B2 (en) | 2012-03-14 |
ATE313929T1 (en) | 2006-01-15 |
CN1270579C (en) | 2006-08-16 |
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EEER | Examination request | ||
MKEX | Expiry |
Effective date: 20200124 |