An apparatus is provided for high frequency multiplexed electrical line communication for cable TV, telephone, internet, security and other control applications over the mid and low voltage power lines and directly through the transformers. The apparatus includes a transmitter, a receiver, a modem, a...http://www.google.fr/patents/US6922135?utm_source=gb-gplus-shareBrevet US6922135 - High frequency network multiplexed communications over various lines using multiple modulated carrier frequencies
High frequency network multiplexed communications over various lines using ...
