Contactless linking device for interconnecting data bus sections
US5293400A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 17, 1991 |
| Grant date | Mar 8, 1994 |
| Priority date | — |
| Expiry date | May 17, 2011 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L25/0268
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
The device serves to interconnect first and second sections of a data bus in order to provide a transparent bi-directional data transmission along the bus comprised of the two sections, irrespective of the protocol used. Basically, the device includes a first transmitter-receiver module at which terminates a first bus section, and a second transmitter-receiver module at which terminates a second bus section. Both modules are disposed face-to-face without contact and are electromagnetically coupled. Each receiver module has a circuit for supplying a transmitting coil with a signal modulated by the data to be transmitted and coming from the bus section to which the module is connected, and a detector circuit for receiving a modulated signal from the same coil to produce the data to be transmitted to the bus section to which the module is connected. In each transmitter-receiver module, the same coil used for transmission and reception is in the form of one and the same flat spiral winding, the windings of the first and second modules facing each other and having substantially aligned axes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.