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WO2005013047A3 - Inter-client synchrony management using differential clock adjustments - Google Patents

Inter-client synchrony management using differential clock adjustments

Info

Publication number
WO2005013047A3
WO2005013047A3 PCT/US2004/023102 US2004023102W WO2005013047A3 WO 2005013047 A3 WO2005013047 A3 WO 2005013047A3 US 2004023102 W US2004023102 W US 2004023102W WO 2005013047 A3 WO2005013047 A3 WO 2005013047A3
Authority
WO
Grant status
Application
Patent type
Prior art keywords
task
clock
time
distribution
synchrony
Prior art date
Application number
PCT/US2004/023102
Other languages
French (fr)
Other versions
WO2005013047A2 (en )
Inventor
Nicholas A J Millington
Original Assignee
Sonos Inc
Nicholas A J Millington
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
Family has litigation

Links

Classifications

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    • GPHYSICS
    • G05CONTROLLING; REGULATING
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    • G06F1/00Details of data-processing equipment not covered by groups G06F3/00 - G06F13/00, e.g. cooling, packaging or power supply specially adapted for computer application
    • G06F1/04Generating or distributing clock signals or signals derived directly therefrom
    • G06F1/12Synchronisation of different clock signals provided by a plurality of clock generators
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Abstract

A system for maintaining synchronous operation execution among a plurality of devices that have independent clocking arrangements. The system includes a task distribution device (11) that distributes tasks to synchrony group members (15) over a network (12). Each task (51) is associated with a time stamp (60) that indicates a time, relative to a clock (43) maintained by the task distribution device (11), at which the synchrony group members (15) are to execute the task. Synchrony group members (15) periodically obtain current time indications from the task distribution device's clock (43), determine a time differential between the task distribution device's clock (43) and its respective clock, and then use the differential and time stamp to determine an execution time of the task based on its respective clock.
PCT/US2004/023102 2003-07-28 2004-07-02 Inter-client synchrony management using differential clock adjustments WO2005013047A3 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US49076803 true 2003-07-28 2003-07-28
US60/490,768 2003-07-28
US10/816,217 2004-04-01
US10816217 US8234395B2 (en) 2003-07-28 2004-04-01 System and method for synchronizing operations among a plurality of independently clocked digital data processing devices

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP2006521889A JP2007512718A (en) 2003-07-28 2004-07-02 System and method for synchronizing the operation between a plurality of digital data processing devices that are independently clock
EP20040778540 EP1654614B1 (en) 2003-07-28 2004-07-02 System and method for synchronizing operations among a plurality of independently clocked digital data processing devices
CN 200480027907 CN101410773B (en) 2003-07-28 2004-07-02 System and method for synchronizing operations among a plurality of independently clocked digital data processing devices
CA 2533852 CA2533852C (en) 2003-07-28 2004-07-02 System and method for synchronizing operations among a plurality of independently clocked digital data processing devices

Publications (2)

Publication Number Publication Date
WO2005013047A2 true WO2005013047A2 (en) 2005-02-10
WO2005013047A3 true true WO2005013047A3 (en) 2009-04-09

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2004/023102 WO2005013047A3 (en) 2003-07-28 2004-07-02 Inter-client synchrony management using differential clock adjustments

Country Status (6)

Country Link
US (45) US8234395B2 (en)
EP (4) EP2648111B1 (en)
JP (5) JP2007512718A (en)
CN (2) CN102281294B (en)
CA (3) CA2982726A1 (en)
WO (1) WO2005013047A3 (en)

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