Method and apparatus for one directional communications in bidirectional communications channel
US7342884B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 26, 2002 |
| Grant date | Mar 11, 2008 |
| Priority date | — |
| Expiry date | Oct 15, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B10/2589
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
Optical transceivers used in data communications equipment are typically bidirectional and require two-way communications in order to maintain their operability. However, in some applications such as cable television, the traffic is highly unbalanced with very high bandwidth requirements in one direction and minimal bandwidth requirements in the opposite direction. Hence for such efficient and cost effective one-way communication applications, unidirectional fiber optic transceivers are useful. There is provided here a unidirectional transceiver provided internally with a keep-alive signal generator to enable unidirectional transmissions. The keep alive signal is, for instance, idle characters for a Gigabit Ethernet communication system, or any other suitable handshake signal which provides the desired operability.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.