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    • 8. 发明授权
    • Multicasting in a wireless display system
    • 在无线显示系统中组播
    • US08887222B2
    • 2014-11-11
    • US13482092
    • 2012-05-29
    • Xiaolong HuangVijayalakshmi R. RaveendranDoo Seok KimFawad ShaukatXiaodong Wang
    • Xiaolong HuangVijayalakshmi R. RaveendranDoo Seok KimFawad ShaukatXiaodong Wang
    • H04N7/173H04W4/06H04L29/06H04N21/6405H04L12/18
    • H04N21/6405H04L12/185H04L12/189H04L65/4076H04W4/06
    • This disclosure relates to techniques to establish a multicast communication session between a source device and multiple sink devices in a Wireless Display (WD) system. Two or more sink devices may be interested in receiving the same media data from the source device. According to the techniques, the source device establishes a multicast session with the sink devices in the WD system, and sends a single copy of multicast media data for the multicast session to the interested sink devices using a receiving multicast port. The source device selects a receiving multicast port number as a destination identifier for each multicast session. The sink devices interested in receiving the media data of a given multicast session bind on the receiving multicast port for the multicast session. This disclosure describes several exemplary multicast subscription procedures to ensure correct binding on the receiving multicast port at each of the sink devices.
    • 本公开涉及在无线显示(WD)系统中在源设备和多个宿设备之间建立组播通信会话的技术。 两个或多个宿设备可能感兴趣从源设备接收相同的媒体数据。 根据这些技术,源设备与WD系统中的宿设备建立组播会话,并使用接收组播端口将多播会话的组播媒体数据的单一副本发送给感兴趣的宿设备。 源设备选择接收多播端口号作为每个多播会话的目的地标识符。 对接收给定组播会话的媒体数据有兴趣的接收设备在组播会话的接收组播端口上进行绑定。 本公开描述了几种示例性多播订购过程,以确保在每个宿设备处的接收多播端口上的正确绑定。