US 12,262,453 B2
Power modulation for powering one or more light sources
James Kenneth Alexanderson, Coppell, TX (US); and Robert Lee York, Lantana, TX (US)
Assigned to Stryker Corporation, Portage, MI (US)
Filed by Stryker Corporation, Kalamazoo, MI (US)
Filed on Dec. 15, 2022, as Appl. No. 18/067,012.
Claims priority of provisional application 63/265,691, filed on Dec. 17, 2021.
Prior Publication US 2023/0199926 A1, Jun. 22, 2023
Int. Cl. H05B 45/10 (2020.01); A61B 90/30 (2016.01)
CPC H05B 45/10 (2020.01) [A61B 90/30 (2016.02)] 29 Claims
OG exemplary drawing
 
1. A method of powering one or more light sources, the method comprising:
providing one or more input frequencies to a plurality of oscillators, wherein the plurality of oscillators generates a plurality of input signals based on the one or more input frequencies;
generating a plurality of power modulation signals based on the plurality of input signals, the plurality of power modulation signals having at least one property that differs from one another;
providing the plurality of power modulation signals to one or more power circuits;
driving the one or more light sources using one or more control signals generated by the one or more power circuits, wherein the one or more control signals are based on at least the plurality of power modulation signals; and
providing one or more linear signals to the one or more power circuits, wherein the one or more control signals are further based on the one or more linear signals;
wherein:
when an input to or an output from the one or more light sources is greater than or equal to a pre-determined level, an intensity of light emanating from the one or more light sources is controlled based on the one or more linear signals, and
when the input to or the output from the one or more light sources is less than the pre-determined level, the intensity of the light emanating from the one or more light sources is controlled based on the one or more power modulation signals.