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1. WO2020109158 - ADAPTATEUR SECTEUR POUR LES COMMUNICATIONS PAR COURANT PORTEUR

Note: Texte fondé sur des processus automatiques de reconnaissance optique de caractères. Seule la version PDF a une valeur juridique

[ EN ]

CLAIMS:

1. A system (100) comprising a power adaptor (108) and a light fidelity, LiFi, over PLC enabled device (102) wherein:

the power adaptor (108) is arrange to provide power line communication, PLC, signals to the LiFi over PLC enabled device (102), wherein the power adaptor (108) comprises:

an input (210) arranged to receive a first signal from a source (110), wherein the first signal comprises an outgoing PLC signal modulated into an alternating current, AC, power component;

an output (216) arranged to transmit a second signal to the LiFi over PLC enabled device (102), wherein the second signal comprises a version of the outgoing PLC signal modulated into a direct current, DC, power component;

a power path (214) comprising a power converter (218) arranged to convert the AC power component from the first signal to the DC power component, and filtering circuitry (220) arranged to attenuate the outgoing PLC signal entering the power converter (218);

a signal path (212) comprising insulating circuitry (222) arranged to allow the outgoing PLC signal but not the AC power component of the first signal to pass from the input (210) to the output (216), and

a junction (224) arranged to produce the second signal by superposing the outgoing PLC signal passed by the insulating circuitry (222) onto the DC power component produced by the power converter (218)

and wherein the LiFi over PLC enabled device (102) comprises:

a PLC signal extraction circuitry (230) arranged to receive the outgoing PLC signal from the power adaptor (108) and

an LED driver (232) arranged to generate an LED drive signal to drive one or more LEDs in the LiFi device using received outgoing PLC signal from the power adaptor (108).

2. The system according to claim 1, wherein the filtering circuitry (220) comprises an input-side filter (220a) arranged to attenuate the outgoing PLC signal entering an input of the power converter (218) that receives the AC power component, and an output-side filter (220b) arranged to attenuate the outgoing PLC signal entering an output of the power converter (218) that outputs the DC power component.

3. The system according to claim 2, wherein the input-side filter (220a) and/or output-side filter (220b) each comprise at least one of: a low pass filter, a band-pass filter, and a band-stop filter.

4. The system according to any preceding claim, wherein the insulating circuitry (222) comprises one or more capacitors (314) for insulating the input (210) of the power adaptor (108) from the output (216) of the power adaptor (108).

5. The system according to claim 4, wherein at least one of the one or more capacitors (314) is a safety capacitor.

6. The system according to any preceding claim, wherein the insulating circuitry (222) comprises a transformer (316) for providing at least partial galvanic insulation between the input and the output.

7. The system according to any preceding claim, wherein the DC power component is a safety extra low voltage DC power component.

8. The system according to any preceding claim, wherein the signal path (212) comprises protection circuitry (322) for reducing interference spikes on the signal path.

9. The system according to claim 8, wherein the protection circuitry (322) comprises a plurality of diodes.

10. The system according to any preceding claim, wherein the output (216) is adapted to receive a return PLC signal from the LiFi over PLC enabled device (102), wherein the signal path (212) is arranged to allow the return PLC signal to pass from the output (216) to the input (210), and wherein the input (210) is arranged to transmit the return PLC signal to the source (110).

11. The system according to any preceding claim, wherein the input (210) comprises a line terminal (210a), a neutral terminal (210b) and a protective earth, PE, terminal (210c), wherein the output comprises a positive terminal (216a), a negative terminal (216b) and a ground terminal (216c), wherein the power adaptor (108) comprises a PE path (502) connecting the PE terminal (210c) to the ground terminal (216c), and wherein the PE path is arranged to pass the outgoing PLC signal from the PE terminal to the ground terminal.

12. The system (100) according to any preceding claim, comprising

a second LiFi over PLC enabled device (102b),

wherein the power adaptor (108) is arranged to also output the second signal to the second LiFi over PLC enabled devices (, 102b), the second LiFi over PLC enabled device (102b) comprising:

a second PLC signal extraction circuitry arranged to receive the outgoing PLC signal from the power adaptor (108) and

a second LED driver arranged to generate a second LED drive signal to drive one or more second LEDs in the second LiFi device using the received outgoing PLC signal from the power adaptor (108) as received by the second PLC signal extraction circuitry.

13. A system (100) according to any of claims 1 to 12, wherein the system (100) comprises the source (110), and wherein the source (110) is a secondary instance of the power adaptor (108b).

14. A power adaptor (108) for providing power line communication, PLC, signals to a PLC enabled device (102), wherein the power adaptor (108) comprises:

an input (210) arranged to receive a first signal from a source (110), wherein the first signal comprises an outgoing PLC signal modulated into an alternating current, AC, power component;

an output (216) arranged to transmit a second signal to the PLC enabled device (102), wherein the second signal comprises a version of the outgoing PLC signal modulated into a direct current, DC, power component;

a power path (214) comprising a power converter (218) arranged to convert the AC power component from the first signal to the DC power component, and filtering circuitry (220) arranged to attenuate the outgoing PLC signal entering the power converter (218);

a signal path (212) comprising insulating circuitry (222) arranged to allow the outgoing PLC signal but not the AC power component of the first signal to pass from the input (210) to the output (216), and

a junction (224) arranged to produce the second signal by superposing the outgoing PLC signal passed by the insulating circuitry (222) onto the DC power component produced by the power converter (218),

wherein the input (210) comprises a line terminal (210a), a neutral terminal (210b) and a protective earth, PE, terminal (210c), wherein the output comprises a positive terminal (216a), a negative terminal (216b) and a ground terminal (216c), wherein the power adaptor (108) comprises a PE path (502) connecting the PE terminal (210c) to the ground terminal (216c), and wherein the PE path is arranged to pass the outgoing PLC signal from the PE terminal to the ground terminal.