Method and arrangement to control a data network

Details Method and arrangement to control a data network Method and arrangement to control a data network

1995-09-12

1998-03-17

Auve, Glenn A.

395291, H04L 1240, G06F 13362

Patent

active

057297010

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.

REFERENCES:
patent: 4980854 (1990-12-01), Donaldson et al.
patent: 5297292 (1994-03-01), Morimoto et al.
ITU-T Recommendation V.24, "List of Definitions for Interchange Circuits Between Data Terminal Equipment (DTE) and Data Circuit-Terminating Equipment (DCE)," Telecommunication Standardization Sector of ITU (Mar. 1993).

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