A data transmitter-receiver for reducing high-frequency noise which leads to a cause of performance deterioration of a radio instrument, and for eliminating dissipation current. The data transmitter-receiver transmits transmitting data to a modulator-demodulator connected to a radio instrument, and receives...http://www.google.fr/patents/US5920592?utm_source=gb-gplus-shareBrevet US5920592 - Data transmitter-receiver
