公开(公告)号：US20110265132A1

公开(公告)日：2011-10-27

申请号：US13070048

申请日：2011-03-23

申请人： Bin Wang ,  Yixue Zhuang ,  Liheng Xu ,  Jianhua Li ,  Qiaofeng Ling ,  Tao Yang

发明人： Bin Wang ,  Yixue Zhuang ,  Liheng Xu ,  Jianhua Li ,  Qiaofeng Ling ,  Tao Yang

IPC分类号： H04N7/173

CPC分类号： H04N21/6168 ,  H04L12/2861 ,  H04N7/17309 ,  H04N21/2187 ,  H04N21/2385 ,  H04N21/6118 ,  H04N21/6405

摘要： A live TV broadcast method of digital interactive TV, which enables the whole network to share one set of CMTS for independent live broadcast: CMTS of each hub head-end is used for on-demand broadcast; Cable Modem aims to receive directives from users to seek downlink frequency corresponding to the IP address according to frequency IP list stored with IP addresses and downlink frequencies for advanced multicast. After that, data flow shall be sent to users through bridging by Cable Modem. As Cable Modem can directly perform the switchover, there is no need to use CMTS to receive uplink data. This is favorable for significant reduction of afflux of various interferences signals and off-line of Cable Mode, which can ensure normal and stable broadcast of programs in case of off-line.

摘要翻译： 数字互动电视直播电视广播方式，使整个网络能够共享一套用于独立直播的CMTS：每个中枢头端的CMTS用于点播广播; 有线调制解调器旨在接收来自用户的指令，根据IP地址存储的IP地址列表和下行频率进行高级组播，寻找与IP地址对应的下行频率。 之后，数据流将通过电缆调制解调器桥接发送给用户。 由于Cable Modem可以直接进行切换，不需要使用CMTS接收上行数据。 这有利于大幅度减少各种干扰信号和离线的电缆模式，从而可以在离线情况下保证程序的正常和稳定的广播。