US 11,859,803 B2
Method of controlling serially-connected lighting devices
Ryan M. Bocock, Austin, TX (US); Richard S. Burberry, Austin, TX (US); Christopher M. Green, Austin, TX (US); Jivan J. Luu, Austin, TX (US); Ananthanag Nemmani, Austin, TX (US); and Jaykrishna A. Shukla, Mays Landing, NJ (US)
Assigned to Lutron Technology Company LLC, Coopersburg, PA (US)
Filed by Lutron Technology Company LLC, Coopersburg, PA (US)
Filed on Sep. 3, 2022, as Appl. No. 17/902,816.
Claims priority of provisional application 63/240,663, filed on Sep. 3, 2021.
Prior Publication US 2023/0073441 A1, Mar. 9, 2023
Int. Cl. F21V 23/00 (2015.01); F21S 4/28 (2016.01); F21K 9/69 (2016.01); F21V 5/00 (2018.01); F21V 7/00 (2006.01); F21V 21/005 (2006.01); F21V 23/06 (2006.01); F21Y 115/10 (2016.01)
CPC F21V 23/005 (2013.01) [F21K 9/69 (2016.08); F21S 4/28 (2016.01); F21V 5/008 (2013.01); F21V 7/0091 (2013.01); F21V 21/005 (2013.01); F21V 23/002 (2013.01); F21V 23/06 (2013.01); F21Y 2115/10 (2016.08)] 29 Claims
OG exemplary drawing
 
1. A system comprising:
one or more lighting devices, wherein each lighting device is configured to adjust a present intensity level of light emitted by the lighting device between a low-end intensity level and a high-end intensity level; and
a fixture controller comprising:
a power converter circuit configured to generate a bus voltage on a power bus, wherein the power bus is coupled between the fixture controller and the one or more lighting devices; and
a control circuit configured to control the one or more lighting devices, the control circuit configured to:
detect a brownout event on the power bus;
determine a number of lighting devices of the one or more lighting devices that caused the brownout event; and
send a power message to the number of lighting devices that caused the brownout event instructing the number of lighting devices to decrease their respective high-end intensity level in response to the detection of the brownout event on the power bus.