Cable type identifying and impedance matching arrangement
US5181858A · kind A · utility
71Cited by
7References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 30, 1991 |
| Grant date | Jan 26, 1993 |
| Priority date | — |
| Expiry date | Aug 30, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S439/955
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An arrangement in a token ring line concentrator for providing appropriate connections to a cable includes a connector adaptor (30, 60) having a printed circuit board (34, 64) on which selected contact members (36, 38; 66, 68) are left either unconnected or shorted together to identify the particular type of adaptor, thus identifying the particular type of cable plugged into the adaptor. The port to which the adapter is inserted includes switchable connections controlled by the selective energization of a relay coil (138). The coil (138) is energized when an open connection between the selected contact members is identified.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.