IP Library › Granted Patent US 12672213

Granted Patent B2

US 12672213 · App. 18/192,713 · Granted Jun 30, 2026

Multi-channel lighting fixture having multiple light-emitting diode drivers

Inventors: Venkatesh Chitta (Bethlehem, PA); Arya Abraham (Center Valley, PA)

Assignee: Lutron Technology Company LLC

H05B45/20 G05B19/102 H05B47/155 H05B47/175 G05B2219/23172

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Quick Facts

Patent No.: US 12672213
App. No.: 18/192,713
Granted: Jun 30, 2026
Kind: B2

External Links

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Abstract

A lighting control system for controlling a cumulative light emitted by a lighting fixture having a plurality of LED light sources may comprise a plurality of LED drivers adapted to be coupled to a respective one of the LED light sources and configured to control an intensity of the respective LED light source, and a controller configured to transmit a single digital message for controlling the cumulative light emitted by the lighting fixture. Each of the plurality of LED drivers is configured to adjust the intensity of the respective LED light source to a preset intensity in response to the single digital message transmitted by the controller.

Claims (68)

1 . A light-emitting diode (LED) lamp controller, comprising:

memory circuitry;

communications interface circuitry; and

control circuitry operatively coupled to the memory circuitry and to the communications interface circuitry, the control circuitry to:

responsive to receipt of a message including address data and command data, determine whether at least a portion of the address data corresponds to assigned address data stored in the memory circuitry,

responsive to the determination that at least a portion of the address data corresponds to assigned address data stored in the memory circuitry, determine whether the command data included in message corresponds to one of a plurality of preset commands stored in the memory circuitry,

responsive to the received command data corresponding to one of the plurality of preset commands stored in the memory circuitry, determine a respective preset intensity for each of a plurality of operatively coupled LED strings, and

cause each of a plurality of LED driver circuits operatively coupled to the LED lamp controller to adjust each of the plurality of operatively coupled LED strings to the respective determined preset intensity.

2 . The LED lamp controller of claim 1 :

wherein the control circuitry comprises control circuitry included in LED driver circuitry couplable to the one or more LED strings; and

wherein to determine whether at least a portion of the address data corresponds to assigned address data stored in the memory circuitry, the control circuitry to further:

determine whether at least a portion of link address data corresponds to link address data assigned to the respective LED driver and stored in the memory circuitry.

3 . The LED lamp controller of claim 1 ,

the control circuitry to further:

determine whether at least a second portion of the address data corresponds to sub-address data assigned to at least one of the plurality of LED lamp driver circuits responsive to the determination that the command data included in message does not correspond to one of a plurality of preset commands stored in the memory circuitry.

4 . The LED lamp controller of claim 3 , further comprising:

responsive to the determination that the second portion of the address data corresponds to the sub-address data assigned to at least one of the plurality of LED lamp driver circuits:

communicate the received command data to the at least one of the plurality of LED lamp driver circuits.

5 . The LED lamp controller of claim 1 :

wherein the control circuitry comprises control circuitry included in master LED driver circuitry couplable to the one or more LED strings and to slave LED driver circuitry,

wherein to determine whether at least a portion of the address data corresponds to assigned address data stored in the memory circuitry, the control circuitry to further:

determine whether at least a first portion of the address data corresponds to link address data assigned to the master LED driver circuitry, and

determine whether at least a second portion of the address data corresponds to sub-address data assigned to the slave LED driver circuitry.

6 . The LED lamp controller of claim 5 wherein responsive to the determination that at least the second portion of the address data corresponds to the sub-address data assigned to the slave LED driver circuitry, the control circuitry to further:

cause a communication of the command data to the slave LED driver circuitry.

7 . The LED lamp controller of claim 6 wherein responsive to the determination that at least the second portion of the address data does not correspond to the sub-address data assigned to the slave LED driver circuitry, the control circuitry to further:

determine whether the command data included in message corresponds to one of a plurality of preset commands stored in the memory circuitry.

8 . A light-emitting diode (LED) lamp control method, comprising:

receiving, by LED control circuitry via communications interface circuitry, a message including address data and command data;

determining, by the LED control circuitry, whether at least a portion of the address data corresponds to assigned address data stored in the memory circuitry;

determining, by the LED control circuitry, whether the command data included in message corresponds to one of a plurality of preset commands stored in the memory circuitry responsive to the determination that at least a portion of the address data corresponds to assigned address data stored in the memory circuitry;

determining, by the LED control circuitry, a respective preset intensity for each of a plurality of operatively coupled LED strings responsive to the determination that the received command data corresponds to one of the plurality of preset commands stored in the memory circuitry; and

causing, by the LED control circuitry, each of a plurality of LED driver circuits operatively coupled to the LED lamp controller to adjust each of the plurality of operatively coupled LED strings to the respective determined preset intensity.

9 . The LED lamp control method of claim 8 wherein determining whether the portion of the address data corresponds to assigned address data stored in the memory circuitry, further comprises:

determining, by LED control circuitry included in an LED driver, whether the portion of the address data corresponds to link address data assigned to an LED driver coupled to the one or more LED strings, wherein the LED control circuitry comprises control circuitry disposed in the LED driver.

10 . The LED lamp control method of claim 8 further comprising:

determining, by the LED control circuitry, whether at least a second portion of the address data corresponds to sub-address data assigned to at least one of the plurality of LED lamp driver circuits responsive to the determination that the command data included in message does not correspond to one of a plurality of preset commands stored in the memory circuitry.

11 . The LED lamp control method of claim 10 , further comprising:

responsive to the determination, by the LED control circuitry, that the second portion of the address data corresponds to the sub-address data assigned to at least one of the plurality of LED lamp driver circuits:

causing, by the LED control circuitry, a communication of the received command data to at least one of the plurality of LED lamp driver circuits.

12 . The LED lamp control method of claim 8 wherein determining whether the portion of the address data corresponds to assigned address data stored in the memory circuitry, further comprises:

determining, by the LED control circuitry, whether at least a first portion of the address data corresponds to link address data assigned to master LED driver circuitry, and

determining, by the LED control circuitry, whether at least a second portion of the address data corresponds to sub-address data assigned to slave LED driver circuitry operatively coupled to the master LED driver circuitry,

wherein the LED control circuitry comprises control circuitry included in the master LED driver circuitry couplable to the one or more LED strings and to the slave LED driver circuitry.

13 . The LED lamp control method of claim 12 further comprising:

causing, by the LED control circuitry, a communication of the command data to the slave LED driver circuitry responsive to the determination, by the LED control circuitry, that at least the second portion of the address data corresponds to the sub-address data assigned to the slave LED driver circuitry.

14 . The LED lamp control method of claim 13 , further comprising:

determining, by the LED control circuitry, whether the command data included in message corresponds to one of a plurality of preset commands stored in the memory circuitry responsive to the determination that at least the second portion of the address data does not correspond to the sub-address data assigned to the slave LED driver circuitry.

15 . A non-transitory, machine-readable, storage device that included instructions that, when executed by LED control circuitry, cause the LED control circuitry to:

receive, via communications interface circuitry, a message including address data and command data;

determine whether at least a portion of the address data corresponds to assigned address data stored in the memory circuitry;

determine whether the command data included in message corresponds to one of a plurality of preset commands stored in the memory circuitry responsive to the determination that at least a portion of the address data corresponds to assigned address data stored in the memory circuitry;

determine a respective preset intensity for each of a plurality of operatively coupled LED strings responsive to the determination that the received command data corresponds to one of the plurality of preset commands stored in the memory circuitry; and

16 . The non-transitory, machine-readable, storage device of claim 15 wherein the instructions that cause the LED control circuitry to determine whether the portion of the address data corresponds to assigned address data stored in the memory circuitry, further cause the LED control circuitry to:

determine whether the portion of the address data corresponds to link address data assigned to an LED driver coupled to the one or more LED strings, wherein the LED control circuitry comprises control circuitry disposed in the LED driver.

17 . The non-transitory, machine-readable, storage device of claim 15 wherein the instructions, further cause the LED control circuitry to:

18 . The non-transitory, machine-readable, storage device of claim 17 wherein the instructions, when executed by the LED control circuitry, further cause the LED control circuitry to:

cause a communication of the received command data to the at least one of the plurality of LED lamp driver circuits responsive to the determination, by the LED control circuitry, that the second portion of the address data corresponds to the sub-address data assigned to the at least one of the plurality of LED lamp driver circuits.

19 . The non-transitory, machine-readable, storage device of claim 15 wherein the instructions that cause the LED control circuitry to determine whether the portion of the address data corresponds to assigned address data stored in the memory circuitry, further cause the LED control circuitry to:

determine whether at least a first portion of the address data corresponds to link address data assigned to master LED driver circuitry; and

determine whether at least a second portion of the address data corresponds to sub-address data assigned to slave LED driver circuitry operatively coupled to the master LED driver circuitry;

wherein the LED control circuitry comprises control circuitry included in the master LED driver circuitry couplable to the one or more LED strings and to the slave LED driver circuitry.

20 . The non-transitory, machine-readable, storage device of claim 19 wherein the instructions, when executed by the LED control circuitry, further cause the LED control circuitry to:

cause a communication of the command data to the slave LED driver circuitry responsive to the determination, by the LED control circuitry, that at least the second portion of the address data corresponds to the sub-address data assigned to the slave LED driver circuitry.

21 . The non-transitory, machine-readable, storage device of claim 20 wherein the instructions, when executed by the LED control circuitry, further cause the LED control circuitry to:

determine whether the command data included in message corresponds to one of a plurality of preset commands stored in the memory circuitry responsive to the determination that at least the second portion of the address data does not correspond to the sub-address data assigned to the slave LED driver circuitry.