Digital return path for hybrid fiber/coax network
US6967966B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 3, 1999 |
| Grant date | Nov 22, 2005 |
| Priority date | — |
| Expiry date | Aug 3, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N7/102
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An optical distribution node for an hybrid fiber/coax network is provided. The optical distribution node includes a laser transmitter coupleable to a fiber optic link that transmits upstream, digital data to a head end of the network. The node also includes a data concentrator coupled to provide the upstream, digital data to the laser. For at least one coaxial cable link of the network coupleable to the optical distribution node, the node also includes a frequency translator that receives the upstream, digital data modulated on a first carrier frequency and retransmits the upstream, digital data to the plurality of modems for collision detection. The node also includes a data interface coupled between the at least one coaxial cable link and the data concentrator that determines whether the upstream data is valid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.