Transmission of digital data over an A.C. supply line
AssigneeSTMicroelectronics S.r.l.
InventorsLuc Wuidart, Michel Bardouillet
Life of this patent
Estimating the term…
Abstract
The present invention relates to a method of data transmission over an A.C. power supply line of a load to be cyclically powered, including organizing a switching of the A.C. supply voltage according to a coding of the data to be transmitted and outside cyclic load supply periods.
Claims23
A method of transmitting data over an A.C. power supply line of a load having cyclic power supply periods, comprising acts of:
- organizing a switching of an A.C. supply voltage according to a coding of the data to be transmitted outside the cyclic power supply periods of the load;
- and
- using the A.C. supply voltage as an envelope of pulses having a higher frequency.
A transmitter of digital data over an A.C. power supply line of a load having cyclic power supply periods, including:
- a switching means adapted to interrupt the A.C. power supply line according to a coding of the digital data to be transmitted, that uses the A.C. supply signal as an envelope of pulses having a higher frequency;
- and
- wherein the switching means is controlled outside the cyclic supply periods of the load.
A receiver of digital data transmitted over an A.C. power supply line of a load having cyclic supply periods, the receiver including:
- a means for extracting from a load supply voltage the digital data that was transmitted;
- and
- wherein the data is formed by a switching, outside the cyclic supply periods of the load, of the A.C. supply voltage according to a predetermined coding.
A transmitter of digital data over an A.C. power supply line of a load having cyclic power supply periods, including:
- a switching circuit to switch an A.C. supply voltage according to a coding of the digital data to be transmitted;
- and
- wherein the switching circuit switches the A.C. supply voltage outside the cyclic power supply periods of the load.
A system for transmitting digital data over an A.C. power supply line of a load, including:
- a switching circuit that, during a first period of an A.C. supply signal, allows the load to be supplied by the A.C. supply signal, and during a second period of the A.C. supply signal, switches the signal according to a coding of the digital data to be transmitted;
- and
- a first element that supplies a D.C. voltage to the load during the second period of the supply signal.
A receiver of digital data transmitted over an A.C. power supply line of a load having cyclic power supply periods, including:
- a circuit that extracts the digital data that was transmitted from a load supply voltage;
- and
- wherein the digital is formed by a switching of an A.C. supply voltage outside the cyclic power supply periods during which the A.C. supply voltage supplies the load.
Dependencies are inferred from the claim text.