A mixed mode transceiver digital control network system is disclosed as including at least two nodes/transceivers connected with a DC power source and a cored inductor via a bus, in which each transceiver includes a current mode transmitter and a voltage mode receiver. A bi-directional voltage clamp...http://www.google.com.hk/patents/US20020150116?utm_source=gb-gplus-share專利 US20020150116 - Mixed mode transceiver digital control network and collision-free communication method
