Title:
CLOCK SYNCHRONIZATION FOR SHARED MEDIA PLAYBACK
Document Type and Number:
WIPO Patent Application WO/2011/139929
Kind Code:
A3
Abstract:
Various embodiments are provided that relate to clock synchronization. In one embodiment, a method for synchronizing a relative clock to a global clock comprises receiving a network packet from a master computing device, the network packet including a network packet time stamp indicating a system time of the global clock when the network packet was transmitted; determining a receipt time offset between a receipt time of the network packet and the network packet time stamp, the receipt time indicating a time at which the network packet is received as measured by the relative clock; and adjusting a system time of the relative clock toward the system time of the global clock by updating a system time offset to the receipt time offset if the receipt time offset is smaller than the system time offset.
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Inventors:
SOLDAN ERIC (US)
Application Number:
PCT/US2011/034710
Publication Date:
February 02, 2012
Filing Date:
May 01, 2011
Export Citation:
Assignee:
MICROSOFT CORP (US)
International Classes:
H04L7/027; H04L12/56
Foreign References:
| US20080243950A1 | 2008-10-02 | |||
| US20080243952A1 | 2008-10-02 | |||
| EP1921783A1 | 2008-05-14 |
Other References:
See also references of EP 2567498A4
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