Television – Special applications – Manufacturing
Patent
1996-04-26
1998-11-24
Faile, Andrew I.
Television
Special applications
Manufacturing
348 12, 348 13, 455 51, 455 42, 370400, 370389, H04N 7173, H04N 716
Patent
active
058414681
ABSTRACT:
A system and method for isolating data messages received from subscribers in a CATV system are disclosed. The system includes a spectrum parallel router which receives data messages in the return spectrum of a service line at a service site. A switch at the service site directs data messages to service lines coupled to the site which have destination addresses corresponding to one of the service lines. Data messages not having a destination address corresponding to one of the service lines are provided to a transmitter for transmission to the next higher level of the CATV network over a return cable. Each service site has its own return cable which may be coupled to a distribution hub or a headend. At the distribution hub and headend, a switch is provided for each return cable and the switches are coupled to one another. At a distribution hub, data messages having a destination address corresponding to one of the other switches at the hub are routed to the corresponding switch. Messages so received by a switch at a distribution hub are coupled to a transmitter for transmission to the next lower network level coupled to the switch. Destination addresses in data messages not recognized by a switch at a distribution hub are coupled to a return cable for transmission to the next higher level in the network.
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Convergence. Com
Faile Andrew I.
Srivastavia Vivek
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