Interactive video distribution systems – User-requested video program system – Video-on-demand
Reexamination Certificate
2007-04-25
2010-10-12
Koenig, Andrew Y (Department: 2423)
Interactive video distribution systems
User-requested video program system
Video-on-demand
C725S097000, C725S034000
Reexamination Certificate
active
07814521
ABSTRACT:
A method is disclosed for distributing advertising data in an internet protocol television (IPTV) system, the method including dividing a plurality of end user devices in the IPTV system into K advertising groups; multicasting J advertising data multicast groups to end user devices in J advertising groups having a percentile ranking above or equal to a predetermined percentile ranking; and unicasting advertising data channels for actively viewed IPTV channels being viewed by other end users.
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Li Zhi
Liu Yali
Ou Canhui
ATT Knowledge Venturers, L.P.
Koenig Andrew Y
Malangone Carmine
Roebuck G. Michael
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