Multiplicity of services via a wavelength division router
US5742414A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 24, 1996 |
| Grant date | Apr 21, 1998 |
| Priority date | — |
| Expiry date | Sep 24, 2016 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N7/165
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An improved communication arrangement includes a head station is connected to a router and delivers a signal to the router that is adjusted to the granularity of the free spectral range (FSR) of the router. At a minimum, a signal is broadcast to all outputs of the router, to which network interface units may be connected, with a modulated carrier that spans as little as one FSR interval. Two independent signals are delivered to the network interface units by adding a second carrier that may be as close as at an adjacent FSR interval. In a telecommunication environment, the head station may be a central office-like station which serves a plurality of customers and which provides the expected private communication. Additionally, it provides new broadcast services, such as TV broadcast (much like cable systems currently do) and other multi-media services.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.