Driver isolating circuit for common bus-type transmission of local area network
US4685113A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 8, 1985 |
| Grant date | Aug 4, 1987 |
| Priority date | — |
| Expiry date | Oct 8, 2005 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L12/40006
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A driver in a transceiver for a common bus-type transmission system of a local area network includes a switching transistor for receiving a transmission data signal from a station and outputting a forward data signal to a bus, a diode for stopping data entry from a bus to the switching transistor, a first data detection circuit for detecting the presence of the transmission data signal, a second data detection circuit for detecting the presence of the forward data signal, a determination circuit for detecting the occurrence of the short circuit of either one of the switching transistor and the diode, and a controller for controlling the conduction between the switching transistor and the bus.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.