CPC H04L 12/40039 (2013.01) [H04L 25/0266 (2013.01); H04L 2012/40273 (2013.01)] | 13 Claims |
1. A network communication system for a vehicle, the network communication system comprising:
a communication bus;
a first communication device;
a plurality of second communication devices which are connected to one another via the communication bus; and
a terminating resistor arranged in parallel with the plurality of second communication devices;
wherein the first communication device comprises a bias voltage source for generating a constant bias voltage on the communication bus, and a current measurement apparatus for capturing the current on the communication bus;
wherein the first communication device comprises a first modulation apparatus for modulating a current set by the bias voltage and the terminating resistor on the communication bus;
wherein each second communication device comprises a second modulation apparatus for modulating the current set by the bias voltage and the terminating resistor;
wherein each second communication device has a second voltage measurement apparatus for capturing a voltage at the terminating resistor;
wherein the bias voltage source and the first modulation apparatus are arranged in parallel in the first communication device; and
wherein a diode is connected upstream of the bias voltage source, the diode being configured to block a current from the first modulation apparatus into the bias voltage source.
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