Circuit arrangement for the transmission of data signals between

Details Circuit arrangement for the transmission of data signals between Circuit arrangement for the transmission of data signals between

1986-08-27

1987-10-13

Schreyer, Stafford D.

Telegraphy

Systems

178 3, H04L 1316

Patent

active

047000210

ABSTRACT:
A system for transmitting data signals between control devices connected to each other by a transmission loop operated directionally dependent has a number of such control devices connected to the loop, with each control device including a signal compiler which compiles data signals to be transmitted in the form of a data signal block which includes at least one receiver address identifying another control device which is intended to receive the transmitted signal block. The signal compiler is followed by a transmit buffer which includes an intermediate storage. A prepared data signal block is accepted in the intermediate storage. A buffer control is connected to the intermediate storage. A transmit authorization signal is transmitted via the loop from control device to control device. Upon receipt of the transmit authoriztion signal by the relevant control device, the buffer control therein enables a word-by-word read-out of the data signal block stored in the intermediate storage. Before forwarding the received transmit authorization signal, the buffer control attaches a sender address and an end block identifier as the last entry to the data signal block which is to be transmitted. This last entry is attached to the data signal block in response to a signal which indicates an empty status of the intermediate storage.

REFERENCES:
patent: 4292623 (1981-09-01), Eswaran et al.
patent: 4340776 (1982-07-01), Ganz et al.

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