Method for routing data messages through a cable transmission system
US6484317B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 11, 1998 |
| Grant date | Nov 19, 2002 |
| Priority date | — |
| Expiry date | Aug 11, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04H60/86
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
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. The return cables isolate the data messages of each service site from the data messages sent by the other service sites. 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 fo…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.