Communication systems using passive RF routing
US5483369A · kind A · utility
11Cited by
10References
26Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 3, 1993 |
| Grant date | Jan 9, 1996 |
| Priority date | — |
| Expiry date | Nov 3, 2013 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04J2203/006
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Communication between an upstream point, such as a TV-source headend followed by a fiber optic line, and a number of downstream points, such as coaxial cable connected subscriber locations, is achieved by wavelength or frequency demultiplexing a spectrum of downstream radio-frequency signals with a surface-acoustic-wave (SAW) demultiplexer-multiplexer and distributing the demultiplexed signals to the downstream points, for example through the cables.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.