US 12,446,128 B2
Performing visible light communication with a lighting unit
Marco Haverlag, Mierlo (NL); Marcel Beij, Sint Oedenrode (NL); Berend Jan Willem Ter Weeme, Eindhoven (NL); Eugen Jacob De Mol, Eindhoven (NL); and Richard Godefridus Cornelis Van Der Wolf, Eindhoven (NL)
Assigned to SIGNIFY HOLDING B.V., Eindhoven (NL)
Appl. No. 18/022,770
Filed by SIGNIFY HOLDING B.V., Eindhoven (NL)
PCT Filed Aug. 31, 2021, PCT No. PCT/EP2021/073940
§ 371(c)(1), (2) Date Feb. 23, 2023,
PCT Pub. No. WO2022/049046, PCT Pub. Date Mar. 10, 2022.
Claims priority of application No. 20193865 (EP), filed on Sep. 1, 2020.
Prior Publication US 2023/0309210 A1, Sep. 28, 2023
Int. Cl. H05B 45/00 (2022.01); H04B 10/116 (2013.01); H05B 45/22 (2020.01); H05B 47/10 (2020.01); H05B 47/195 (2020.01)
CPC H05B 47/195 (2020.01) [H05B 45/22 (2020.01)] 14 Claims
OG exemplary drawing
 
1. A lighting unit configured for performing a communication according to a visible light communication (VLC) control signal, the lighting unit comprising:
a voltage supply configured to provide a bus voltage;
at least one lighting element configured to receive the bus voltage for powering one or more LED elements, the at least one lighting element comprising:
the one or more LED elements; and
an LED controller coupled in series with the one or more LED elements, wherein the LED controller is configured to control an average current flowing through the one or more LED elements,
wherein the voltage supply further comprises a voltage modulator configured to modulate the bus voltage provided to the one or more lighting elements to thereby control a magnitude of light output by the one or more lighting elements for performing the communication according to the VLC control signal received by the voltage modulator, and wherein the voltage modulator is configured to modulate the bus voltage according to a modulation pattern of the light output and the modulation pattern includes a unique identifier corresponding to the lighting unit.