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1. 发明申请

WO2017215769A1 DETERMINISTIC RE-MULTIPLEXING FOR DVB SFN NETWORKS 审中-公开
标题翻译： DVB SFN网络的确定性重复合
公开(公告)号：WO2017215769A1
公开(公告)日：2017-12-21
申请号：PCT/EP2016/064106
申请日：2016-06-17
申请人： NEVION EUROPE AS
发明人： STEPHANSEN, Helge , JENSEN, Bjørn, Tommy , DALE, Anders
IPC分类号： H04H20/18 , H04H20/67 , H04N21/236
摘要： A method for adding Metadata packets to an MPEG-2 transport stream transmitted via a broadcast network, comprising providing feeds of data from at least one source, where the feeds comprise payload packets being referenced by a common 1PPS reference, and where the feeds are input to at least one multiplexer, MUX; providing Time Marker Packets, TMPs, as input to each multiplexer, where each TMP comprises a plurality of time stamps per second measured relative to said 1PPS reference, and each TMP has a value representing an Absolute Program Clock Reference, APCR, at the time of transmission, where the APCR is based on the Epoch time, and where the TMP packet further comprises PCR, OPCR locked to said 1 PPS and UTC leap seconds; letting each MUX generate SFN Synchronisation Frame based on the set rate of the SFN transport stream, the length of each SFN frame and said TMP comprising the APCR; multiplexing and applying rate adaptation matching the system specific modulation scheme to a final multiplexed deterministic transport stream.
摘要翻译：用于将元数据分组添加到经由广播网络传送的MPEG-2传输流的方法包括提供来自至少一个源的数据馈送，其中馈送包括由公共1PPS引用的有效载荷分组参考，并且馈送被输入到至少一个复用器MUX; 提供时间标记包TMP作为每个多路复用器的输入，其中每个TMP包括相对于所述1PPS基准测量的每秒多个时间戳，并且每个TMP具有表示绝对节目时钟基准APCR在传输，其中APCR基于Epoch时间，并且其中TMP分组还包括PCR，OPCR锁定到所述1PPS和UTC闰秒; 使每个MUX根据SFN传输流的设置速率，每个SFN帧的长度和包括APCR的所述TMP产生SFN同步帧; 多路复用并将系统特定调制方案与最终复用确定性传输流相匹配的速率自适应。

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