Patent ID: 6950010

Claim:
Method for point-to-point communicating, for transmission/reception of data or information over an AC electric power line, between two apparatuses having respective electronic control systems (HA,SA; HA 1 -HA 5 ,MSA), including: an electric user (HA; HA 1 -HA 5 ), in particular a household user, having a first electronic control system (M 2 ) and at least a first electric load (L 1 ; L 2 ,LN); a monitoring or control device (SA; MSA), having a second electronic control system (M 1 ; MC), said device (SA; MSA) being located on said line between an electric power source (Outlet) and said, user (HA; HA 1 -HA 5 ); the transmission/reception of data or information over said line being performed by means of a modulation of electric power between said user (HA; HA 1 -HA 5 ) and said device (SA; MSA) and/or vice-versa, characterized in that the transmission of data or information over said line from said user (HA; HA 1 -HA 5 ) to said device (SA; MSA) is performed through a modulation of electric power or current absorbed by said first load (L 1 ; L 2 ,LN) under the control of said first control system (M 2 ), data or information transmitted by said user (HA; HA 1 -HA 5 ) being encoded through controlled absorptions of electric power or current of said first load (L 1 ; L 2 ,LN), and the reception of data or information (SA; MSA) is performed by said second control system (M 1 ; MC) of said device (SA; MSA) by decoding said controlled absorptions.