WO2002013430A3 - Clock analysis - Google Patents

Clock analysis Download PDF

Info

Publication number
WO2002013430A3
WO2002013430A3 PCT/GB2001/003532 GB0103532W WO0213430A3 WO 2002013430 A3 WO2002013430 A3 WO 2002013430A3 GB 0103532 W GB0103532 W GB 0103532W WO 0213430 A3 WO0213430 A3 WO 0213430A3
Authority
WO
WIPO (PCT)
Prior art keywords
clock
local
remote
values
clock values
Prior art date
Application number
PCT/GB2001/003532
Other languages
French (fr)
Other versions
WO2002013430A2 (en
Inventor
Jonathan Diggins
Christopher David Ridley
Original Assignee
Snell & Wilcox Ltd
Jonathan Diggins
Christopher David Ridley
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 Snell & Wilcox Ltd, Jonathan Diggins, Christopher David Ridley filed Critical Snell & Wilcox Ltd
Priority to AU2001276520A priority Critical patent/AU2001276520A1/en
Publication of WO2002013430A2 publication Critical patent/WO2002013430A2/en
Publication of WO2002013430A3 publication Critical patent/WO2002013430A3/en

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
    • 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
    • H03—ELECTRONIC CIRCUITRY
    • H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION, OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
    • H03L7/00—Automatic control of frequency or phase; Synchronisation
    • 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

Abstract

In determining the offset between a local clock and a remote clock where remote clock values are received recurrently, a succession of pairs of local and remote clock values are used to construct a model of the relationship between the local and remote clock values. The model is typically constructed from a second (or greater) order polynomial of the clock values.
PCT/GB2001/003532 2000-08-04 2001-08-06 Clock analysis WO2002013430A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2001276520A AU2001276520A1 (en) 2000-08-04 2001-08-06 Clock analysis

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0019239.3 2000-08-04
GB0019239A GB2365634B (en) 2000-08-04 2000-08-04 Clock analysis

Publications (2)

Publication Number Publication Date
WO2002013430A2 WO2002013430A2 (en) 2002-02-14
WO2002013430A3 true WO2002013430A3 (en) 2002-08-29

Family

ID=9897040

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2001/003532 WO2002013430A2 (en) 2000-08-04 2001-08-06 Clock analysis

Country Status (3)

Country Link
AU (1) AU2001276520A1 (en)
GB (1) GB2365634B (en)
WO (1) WO2002013430A2 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB0229648D0 (en) * 2002-12-19 2003-01-22 Zarlink Semiconductor Ltd Method of and apparatus for recovering a reference clock
WO2007120089A1 (en) * 2006-04-13 2007-10-25 Telefonaktiebolaget Lm Ericsson (Publ) Network synchronisation supervision
EP2034642B1 (en) * 2007-09-07 2011-10-26 Siemens Aktiengesellschaft Method for transmitting synchronisation messages in a communications network
GB2454936B (en) * 2007-11-23 2012-09-19 Ubiquisys Ltd Oscillator calibration
CN114845377B (en) * 2022-05-05 2024-02-23 中南大学 UWB-based high-precision wireless clock synchronization method and system

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0697774A1 (en) * 1994-08-15 1996-02-21 Hewlett-Packard Company Clock offset estimation
US5883924A (en) * 1996-04-12 1999-03-16 Hewlett Packard Company Method and apparatus for PCR jitter measurement in an MPEG-2 transport stream using sliding window
US6175604B1 (en) * 1998-07-27 2001-01-16 Raffaele Noro Clock synchronization over data transmission networks
WO2001039504A1 (en) * 1999-11-26 2001-05-31 Koninklijke Philips Electronics N.V. Device and method for advanced bayesian kalman time estimation
WO2001050674A1 (en) * 1999-12-30 2001-07-12 Nokia Networks Oy Synchronization in packet-switched telecommunications system

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2128824A (en) * 1982-10-06 1984-05-02 Standard Telephones Cables Ltd Clock pulse generation circuit
GB9108654D0 (en) * 1991-04-23 1991-06-12 Motorola Israel Ltd A data demodulator
FR2705162B1 (en) * 1993-05-10 1995-07-07 Merlin Gerin REMOTE SWITCH EQUIPPED WITH A TIMED SELF-CUTTING SYSTEM.
KR0137701B1 (en) * 1994-12-13 1998-05-15 양승택 Pes packetizing apparatus of mpeg-2 system

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0697774A1 (en) * 1994-08-15 1996-02-21 Hewlett-Packard Company Clock offset estimation
US5883924A (en) * 1996-04-12 1999-03-16 Hewlett Packard Company Method and apparatus for PCR jitter measurement in an MPEG-2 transport stream using sliding window
US6175604B1 (en) * 1998-07-27 2001-01-16 Raffaele Noro Clock synchronization over data transmission networks
WO2001039504A1 (en) * 1999-11-26 2001-05-31 Koninklijke Philips Electronics N.V. Device and method for advanced bayesian kalman time estimation
WO2001050674A1 (en) * 1999-12-30 2001-07-12 Nokia Networks Oy Synchronization in packet-switched telecommunications system

Also Published As

Publication number Publication date
GB2365634B (en) 2004-09-22
WO2002013430A2 (en) 2002-02-14
GB0019239D0 (en) 2000-09-27
GB2365634A (en) 2002-02-20
AU2001276520A1 (en) 2002-02-18

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