Method and arrangement to control a data network
US5729701A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 12, 1995 |
| Grant date | Mar 17, 1998 |
| Priority date | — |
| Expiry date | Sep 12, 2015 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L12/403
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method and an arrangement in a data network, comprising a centrally located master and a number of slaves connected to the master via a bus, to control, from the master, the access of the slaves to the bus. When a slave has information to send, a first signal, which implies a request for permission to send, is transferred via the bus to the master. A scanning means in the master scans for first signals from the slaves only if no slave has a permission to send and, when a first signal is found, the scanning is stopped and a second signal, implying a permission to send, is transferred via a distribution means to the slave which has requested the permission to send. The second signal is transferred to the slave only as long as the first signal is transferred from the slave to the master.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.