A communication circuit for an Ethernet or other network transceiver includes a first sub-circuit having a first input which receives a composite differential signal including first and second differential signal components, a second input which receives a differential replica transmission signal, and...http://www.google.ca/patents/US7433665?utm_source=gb-gplus-sharePatent US7433665 - Apparatus and method for converting single-ended signals to a differential signal, and transceiver employing same
