Circuit arrangement for serial data transmission between a...

Details Circuit arrangement for serial data transmission between a... Circuit arrangement for serial data transmission between a...

H - Electricity

04

L

340/95

H04L 5/14 (2006.01) H04L 12/40 (2006.01) H04L 25/02 (2006.01)

Patent

CA 1273690

ABSTRACT OF THE DISCLOSURE A circuit arrangement for serial data transmission between a plurality of subscriber stations via a data bus with transmitters that are high-impedance in the passive condition and low-impedance in the active condition is provided with a mutual control of the subscriber stations which occurs via the data bus without the assistance of additional control lines. This is achieved in that the leads of the data bus are each connected to a voltage source at at least one location via a resistor and in that at least one evaluation device for evaluating the voltages carried by the two leads is provided, the evaluation device outputting a busy signal given voltages of different magnitude at the leads of the data bus and outputting a free signal given identical voltages at the leads of the data bus. The circuit arrangement is particularly suitable for utilization in remote control devices.

529771

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