Apparatus for implementing electro-optical CATV network and signal processing method used by the apparatus
US8050562B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 7, 2007 |
| Grant date | Nov 1, 2011 |
| Priority date | — |
| Expiry date | Jul 20, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N21/6168
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Provided is an apparatus for implementing an electro-optical cable distribution network in which a coaxial cable is replaced with an optical cable in order to provide a service integrating broadcast data and communication data by solving a frequency constraint problem in a cable television (CATV) network employing a conventional hybrid-fiber coaxial (HFC) network architecture. The apparatus includes an optical network unit (ONU) which converts a downstream signal received from a system operator (SO) into an optical signal and transmits the optical signal to an optical cable; and an optical cable modem which receives the optical downstream signal from the ONU and converts the received signal into an electrical signal. In addition, the ONU and the optical cable modem control signal quality of an optical path.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.