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    • 8. 发明授权
    • IPTV service system and method for efficient multicast of MPEG-TS
    • 用于MPEG-TS的高效多播的IPTV服务系统和方法
    • US07930726B2
    • 2011-04-19
    • US11947670
    • 2007-11-29
    • Jae Cheol SimKee Seong Cho
    • Jae Cheol SimKee Seong Cho
    • H04N7/173
    • H04N21/435H04N7/17318H04N21/235H04N21/26283H04N21/438H04N21/64322
    • Provided are an IPTV service system and a method thereof. The IPTV service system includes: a headend, a set-top box, and a plurality of multicast routers. The headend assigns a multicast group address for each channel and assigns a source address for each PID with respect to an MPEG-TS and packetizes the MPEG-TS into a plurality of packet streams. The set-top box identifies a user-selected channel and the necessary elementary streams in the MPEG-TS for the selected channel, and requests selective reception of only packet streams corresponding to the selected channel and the necessary elementary streams from the plurality of packet streams. The plurality of multicast routers form a multicast path between the headend and the set-top box. Accordingly, while services such as a multi-angle service, a multi-lingual service, a mosaic EPG service, and a personalized EPG service are realized in one multicast control method together with viewing of a general broadcasting channel, efficient use of bandwidth can be achieved.
    • 提供IPTV服务系统及其方法。 IPTV服务系统包括头端,机顶盒和多个组播路由器。 头端为每个通道分配多播组地址,并为每个PID分配关于MPEG-TS的源地址,并将MPEG-TS分组成多个分组流。 机顶盒识别所选频道的MPEG-TS中的用户选择的信道和必要的基本流,并且仅从多个分组流请求仅选择对应于所选择的信道的分组流和必要的基本流 。 多个组播路由器在前端和机顶盒之间形成多播路径。 因此,在一个组播控制方法中,与观看一般的广播信道一起实现诸如多角度服务,多语言服务,马赛克EPG服务和个性化EPG服务的服务,可以有效地使用带宽 实现了