Access device and system for managing television and data communications through a cable television network
US6453473B1 · kind B1 · utility
Inventor
Key dates
| Filing date | Sep 15, 1998 |
| Grant date | Sep 17, 2002 |
| Priority date | — |
| Expiry date | Sep 15, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N7/17309
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An access device for use with a cable television communications network and a network utilizing such a device. The network includes a cable head end in communication with a television source and a data source and a trunk feed cable. At least one access device is placed in communication with the trunk feed cable. The access device includes an upstream frequency translator, a communications modem, a television band pass filter, a non-television band pass filter, a downstream frequency and a microprocessor for allocating frequency slots for the subscriber, setting the upstream frequency translator. At least one drop cable is in communication with the access device and a subscriber cable modem. In operation, the subscriber sends a service request from the computer, the subscriber cable modem converts the service request signal from the computer and sends the converted signal through the drop cable to the access device. The access device translates the service request signal to a first predetermined frequency and sends the service request signal through the communications modem to the data source via the trunk cable and the head end. The data source responds to the service request signa…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.