Method and arrangement for transmitting data, especially in an a

Details Method and arrangement for transmitting data, especially in an a Method and arrangement for transmitting data, especially in an a

1985-06-14

1988-08-09

Olms, Douglas W.

Multiplex communications

Wide area network

Packet switching

370 95, H04J 316

Patent

active

047633204

ABSTRACT:
A method and arrangement for the transmission of data, in digital form, in a bus system, which includes a central unit, several stations, as well as a bus line or data bus. During operation, the following different transmission phases take place: An initiation phase, in which the central control unit queries all of the stations and prepares a request phase; the request phase, in which the individual stations report a required bus access; an allocation phase, in which each station obtains a time slot in response to its request; and a data phase, for transmission of the data. The central unit includes a phase control, a request collector, a time slot allocator, and a register. A number of the stations are provided with a request generator in such a way that the latter can signal a need to the bus access. Thus, an optimum utilization of the transmission capacity is achieved, possibly by switching stations off. However, a rapid bus access is possible at any time for important stations.

REFERENCES:
patent: 3723971 (1973-03-01), Betts et al.
patent: 3824545 (1974-07-01), Brenner et al.
patent: 4034351 (1977-07-01), Takezoe
patent: 4413338 (1983-11-01), Renoulin et al.
patent: 4423507 (1983-12-01), Roger et al.
patent: 4603418 (1986-07-01), Townsend
patent: 4680753 (1987-07-01), Fulton et al.

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