Multidirectional repeater for data transmission between electrically isolated and/or physically different signal transmission media
US5648984A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 10, 1994 |
| Grant date | Jul 15, 1997 |
| Priority date | — |
| Expiry date | Aug 10, 2014 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L12/44
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
In a signal transmission network, such as a data network, having a multiple access bus topology (12) in which many nodes reside and communicate over the same bus, and wherein electrically isolated and/or physically different signal transmission media (17,18,19) are encompassed by the bus (12), and wherein a common protocol is used across the entire network; a multidirectional repeater (10) repeats signals from any one of the signal transmission media to one or more of the other signal transmission media, thereby providing a contiguous logical bus across the different signal transmission media. The multidirectional repeater (10) uses logic transitions, e.g., the presence or absence of data, a change in a data or logic state, the presence or absence of a carrier, a change in a carrier frequency, or any other suitable indication that data is present on one of the signal transmission media (17,18,19) for determining when to repeat signals from that signal transmission media to other signal transmission media and for determining when to stop repeating signals. An interface (21,22,23) is provided between each signal transmission media (17,18,19) and the multidirectional repeater (10) to …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.