公开(公告)号：EP1040645B1

公开(公告)日：2018-03-28

申请号：EP98963930.7

申请日：1998-12-14

申请人： Nokia Solutions and Networks GmbH & Co. KG

发明人： ATWATER, Antonio ,  DRAKE, Edward, C.

IPC分类号： H04L12/18 ,  H04M11/06 ,  H04N21/239 ,  H04N21/258 ,  H04N21/2665 ,  H04N21/2381 ,  H04N21/438 ,  H04N21/478 ,  H04N21/6405 ,  H04N21/643 ,  H04N5/44 ,  H04N7/173 ,  H04Q11/04 ,  H04N21/426

CPC分类号： H04L12/1886 ,  H04M11/062 ,  H04N5/4401 ,  H04N7/17318 ,  H04N21/2381 ,  H04N21/2393 ,  H04N21/25866 ,  H04N21/2665 ,  H04N21/42684 ,  H04N21/4381 ,  H04N21/478 ,  H04N21/6405 ,  H04N21/64322 ,  H04Q11/0478

摘要： An IP multicast aware switched digital method and apparatus are provided in a settop unit wherein packet streams containing reference information are multicast while a select set of program information is routed to the settop units so that multicast streams can be identified and full content can be routed individually to the settop unit for decoding. Specific or preferred embodiment applications include simultaneous output and interactive communication with a television (true video on demand), computer (Internet access), videophone and telephone.