Invention Grant
- Patent Title: Method and apparatus for time synchronisation in wireless networks
- Patent Title (中): 无线网络中时间同步的方法和装置
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Application No.: US14198989Application Date: 2014-03-06
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Publication No.: US09444567B2Publication Date: 2016-09-13
- Inventor: Ian R Knowles
- Applicant: Imagination Technologies Limited
- Applicant Address: GB Kings Langley
- Assignee: Imagination Technologies Limited
- Current Assignee: Imagination Technologies Limited
- Current Assignee Address: GB Kings Langley
- Agency: Vorys, Sater, Seymour and Pease LLP
- Agent Vincent M DeLuca
- Priority: GB1116521.4 20110923; GB1209312.6 20120524
- Main IPC: H04L7/08
- IPC: H04L7/08 ; H04J3/06 ; H04W56/00 ; H04N5/06 ; H04W84/12

Abstract:
A wireless media distribution system is provided comprising an access point (6) for broadcasting media and a plurality of stations (2) for reception and playback of media. Each station is configured for receiving and decoding a timestamp in a beacon frame transmitted repeatedly from the access point. This is used to control the output signal of a station physical layer clock (12) which is then used as a clock source for an application layer time synchronisation protocol. This application layer time synchronisation protocol can then be used in the station to control an operating system clock (8) for regulating playback of media.
Public/Granted literature
- US20140204930A1 METHOD AND APPARATUS FOR TIME SYNCHRONISATION IN WIRELESS NETWORKS Public/Granted day:2014-07-24
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