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    • 4. 发明申请
    • METHOD AND APPARATUS FOR ENABLING MULTIMEDIA SYNCHRONIZATION
    • 用于启用多媒体同步的方法和设备
    • WO2013066564A3
    • 2013-07-11
    • PCT/US2012058972
    • 2012-10-05
    • INTERDIGITAL PATENT HOLDINGS
    • LOTFALLAH OSAMALIU HANG
    • H04L29/06
    • H04L65/1083H04L29/06197H04L29/06217H04L29/06353H04L29/06374H04L29/06523H04L65/1006H04L65/1016H04L65/1093H04L65/80H04L67/04H04L67/10
    • Methods and apparatus are described for synchronizing a media presentation on a plurality of wireless transmit/receive units (WTRUs). A media session may be replicated from a first WTRU onto a second WTRU. The first WTRU may initiate a bookmark procedure to create a bookmark to obtain synchronized playout with the second WTRU. A suggested presentation offset in the bookmark may specify an offset in time from a bookmark created time to a bookmark presentation time at the first WTRU. The first WTRU may establish an Internet protocol (IP) multimedia subsystem (IMS) session with a packet switch stream (PSS) server. The media session may be replicated onto the second WTRU at a wall-clock time T, and the second WTRU may present an offset equal to T - bookmarkcreatedtime + bookmark offset - suggestedPresentationOffset from the beginning of a program in order to obtain synchronized media playout with the first WTRU.
    • 描述了用于同步多个无线发射/接收单元(WTRU)上的媒体呈现的方法和设备。 媒体会话可以从第一WTRU复制到第二WTRU。 第一WTRU可以发起书签过程来创建书签以获得与第二WTRU的同步播出。 书签中的建议呈现偏移可指定从书签创建时间到第一WTRU处的书签呈现时间的时间偏移。 第一WTRU可以与分组交换流(PSS)服务器建立互联网协议(IP)多媒体子系统(IMS)会话。 媒体会话可以在挂钟时间T被复制到第二WTRU上,并且第二WTRU可以从节目的开头呈现等于T-bookmarkcreatedtime +书签偏移-preferredPresentationOffset的偏移,以便获得同步的媒体播放 第一个WTRU。