Multiplex communications – Pathfinding or routing – Switching a message which includes an address header
Reexamination Certificate
2004-08-16
2010-06-29
Ngo, Ricky (Department: 2464)
Multiplex communications
Pathfinding or routing
Switching a message which includes an address header
C370S535000, C725S032000, C725S112000
Reexamination Certificate
active
07746853
ABSTRACT:
A method, an apparatus and a carrier medium for securely distributing multimedia while still retaining compatibility with existing CA systems. The method includes forming a packet including a plurality of encrypted multimedia stream segments. The packet further includes, for each segment of the plurality, a field providing conditional access information associated with the segment. The method further includes sending the packet to an intermediary. The method is such that the intermediary receiving the packet can send a first segment of the plurality and any associated conditional access information to a first receiver, and send a second segment of the plurality and any associated conditional access information to a second receiver. The method is also such that no decryption of any segment of the plurality is required by the intermediary to send the first segment or to send the second segment.
REFERENCES:
patent: 5920572 (1999-07-01), Washington et al.
patent: 5946326 (1999-08-01), Rinne
patent: 6441782 (2002-08-01), Kelly et al.
patent: 7382881 (2008-06-01), Uusitalo et al.
patent: 2002/0116705 (2002-08-01), Perlman et al.
patent: 2002/0163911 (2002-11-01), Wee et al.
patent: 2004/0047470 (2004-03-01), Candelore
patent: 2004/0187161 (2004-09-01), Cao
patent: 2006/0018470 (2006-01-01), Paila et al.
K. Deen and R. Wade, “Implementation of DVB Simulcrypt ETSI TS103197V1.3.1 Architecture,” Tandberg Television, United Kingdom, IBC Conference Paper 2002.
“Head-End Implementation of DVB Simulcrypt,” Digital Video Broadcasting Document A045, Draft Rev 1.1g, Nov. 12, 1998.
Cisco Technology Inc.
Inventek
Ngo Ricky
Oveissi David
Rosenfeld Dov
LandOfFree
Method and apparatus for transporting broadcast video over a... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and apparatus for transporting broadcast video over a..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for transporting broadcast video over a... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4170912