Interactive video distribution systems – Video distribution system with upstream communication – Transmission network
Reexamination Certificate
2005-05-10
2005-05-10
Miller, John (Department: 2614)
Interactive video distribution systems
Video distribution system with upstream communication
Transmission network
C725S097000, C725S095000, C725S093000, C725S114000, C725S116000
Reexamination Certificate
active
06892389
ABSTRACT:
In an access network (ACCESS NETWORK) wherein channels (TV1, TV2) of a distributive interactive service are broadcasted, the user terminals (UT1, UT2, UT3) send first type request information to a broadcasting unit (BCU2), close to the subscribers, to indicate the requested channels (TV1, TV6). In case one of the requested channels (TV6) is not available at the input of this broadcasting unit (BCU2), the latter broadcasting unit (BCU2) generates second type request information indicative for the unavailable requested channel (TV6) and sends this second type request information to a more central broadcasting unit (BCU1). Thus, a broadcasting unit (BCU2) close to the subscribers upon request of one of the subscribers either broadcasts a requested channel (TV1) to the subscribers or requests a more central broadcasting unit (BCU1) to be provided with the requested channel (TV6).
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Miller John
Sughrue & Mion, PLLC
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