Transmitting apparatus of digital signals on a supply line of electronic devices and corresponding method
AssigneeSTMicroelectronics S.r.l.
InventorsStefano Saggini, Roberto Cappelletti, Walter Stefanutti, Paolo Mattavelli
Life of this patent
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Abstract
A power converter having a noise component and a modulator configured to vary a frequency of the noise component of the power converter on the basis of a digital signal to be transmitted.
Claims36
A transmitting apparatus of digital signals on a line in which there is a supply signal, comprising:
- a direct-voltage switching converter;
- means for varying the switching frequency of said converter on the basis of a digital signal to be transmitted, said converter being suitable for generating an alternating current signal associated with the supply signal during the switching periods;
- and
- means for receiving said alternating current signal and suitable for processing the latter to obtain said digital signal.
A method for transmitting digital signals on a line wherein there is a supply signal of electronic devices, said method comprising varying a switching frequency of a direct-voltage switching converter on the basis of a digital signal to be transmitted, generating an alternating current signal associated with the supply signal during the switching periods, receiving said alternating current signal and processing thereof to obtain said digital signal.
A system, comprising:
- a line configured to provide a power supply signal for a plurality of electronic devices;
- and
- a transmitting apparatus configured to transmit digital signals on said line wherein said transmitting apparatus comprises:
- a switching converter;
- means for varying the switching frequency of said converter on the basis of a digital signal to be transmitted, said converter being suitable for generating an alternating current signal associated with the power supply signal during the switching periods;
- and
- means for receiving said alternating current signal and for processing the latter to obtain said digital signal.
A transceiver, comprising:
- a switching power converter having a variable switching frequency;
- a modulator configured to vary the switching frequency of the switching power converter based on a digital signal;
- and
- a receiver configured to detect the switching frequency of the power converter and output the digital signal based on the detected switching frequency.
A system, comprising:
- a power supply line;
- a transmitter having:
- a first power converter having a variable switching frequency and coupled to the power supply line;
- and
- a modulator configured to vary the switching frequency of the first power converter based on a digital signal;
- and
- a demodulator coupled to the power supply line and configured to detect the switching frequency of the first power converter.
A method of transmitting a digital signal between a plurality of devices coupled to a power supply line, the method comprising:
- modulating a feedback signal of a power converter of one of the plurality of devices based on the digital signal;
- detecting the modulation of the feedback signal;
- and
- reproducing the digital signal based on the detected modulation of the feedback signal.
A system, comprising:
- a DC power line;
- an AC-DC converter having an output coupled to the DC power line;
- a transmitter having:
- a DC-DC power converter having a feedback loop and coupled to the DC power line;
- and
- a modulator configured to modulate a signal in the feedback loop of the DC-DC power converter based on a digital signal;
- and
- a demodulator coupled to the DC power line and configured to detect the modulated signal.
A receiver, comprising:
- an input configured to couple to a direct-current (DC) bus line;
- and
- a demodulator coupled to the input and configured to extract digital signals transmitted on the DC bus line based on frequencies associated with a bounce signal from a switching converter on the DC bus line.
A transmitter, comprising:
- an output terminal to output a control signal to a switching converter;
- and
- a controller coupled to the output terminal and configured to generate the control signal to vary frequencies associated with a bounce signal of the switching converter on the basis of a digital signal to be transmitted by the switching converter on a direct current (DC) bus line.
A transmitter, comprising:
- a Direct Current (DC) to DC power converter having a feedback loop and configured to couple to a DC power line;
- and
- a modulator coupled to the power converter and configured to modulate a signal in the feedback loop of the power converter based on a digital signal to be transmitted on the DC power line.
Dependencies are inferred from the claim text.