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1. WO2020140020 - TIME SLICING FOR MULTI-CHANNEL COLOR TUNING

Publication Number WO/2020/140020
Publication Date 02.07.2020
International Application No. PCT/US2019/068715
International Filing Date 27.12.2019
IPC
H05B 45/325 2020.01
HELECTRICITY
05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
BELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR
45Circuit arrangements for operating light emitting diodes
30Driver circuits
32Pulse-control circuits
325Pulse-width modulation
H05B 45/46 2020.01
HELECTRICITY
05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
BELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR
45Circuit arrangements for operating light emitting diodes
40Details of LED load circuits
44with an active control inside an LED matrix
46having LEDs disposed in parallel lines
CPC
H05B 45/24
HELECTRICITY
05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
BELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR
45Circuit arrangements for operating light emitting diodes [LED]
20Controlling the colour of the light
24using electrical feedback from LEDs or from LED modules
H05B 45/325
HELECTRICITY
05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
BELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR
45Circuit arrangements for operating light emitting diodes [LED]
30Driver circuits
32Pulse-control circuits
325Pulse-width modulation [PWM]
H05B 45/44
HELECTRICITY
05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
BELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR
45Circuit arrangements for operating light emitting diodes [LED]
40Details of LED load circuits
44with an active control inside an LED matrix
H05B 45/46
HELECTRICITY
05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
BELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR
45Circuit arrangements for operating light emitting diodes [LED]
40Details of LED load circuits
44with an active control inside an LED matrix
46having LEDs disposed in parallel lines
Applicants
  • QUI, Yifeng [NL]/[US]
  • MCREYNOLDS, Alan Andrew [US]/[US]
Inventors
  • QUI, Yifeng
  • MCREYNOLDS, Alan Andrew
Agents
  • SCHEER, Bradley W.
  • ARORA, Suneel
  • BEEKMAN, Marvin L.
  • BIANCHI, Timothy E.
  • BLACK, David W.
  • LANG, Allen R.
  • PERDOK, Monique M.
Priority Data
16/234,29627.12.2018US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) TIME SLICING FOR MULTI-CHANNEL COLOR TUNING
(FR) DÉCOUPAGE EN TRANCHES DE TEMPS POUR UN ACCORD DE COULEUR MULTICANAL
Abstract
(EN)
A system may include a memory configured to store instructions and a processor. The processor may be configured to execute the instructions to cause the system to determine a PWM frequency of the input PWM signal and generate a first PWM signal to power a first light emitting diode (LED), a second PWM signal to power a second LED, and a third PWM signal to power a third LED. Each of the first PWM signal, the second PWM signal, and the third PWM signal may have the PWM frequency of the input PWM signal and may be in phase with the input PWM signal.
(FR)
Un système peut comprendre une mémoire configurée pour enregistrer des instructions et un processeur. Le processeur peut être configuré afin d'exécuter les instructions pour amener le système à déterminer une fréquence de modulation de largeur d'impulsion (MLI) du signal d'entrée MLI et à générer un premier signal MLI pour alimenter une première diode électroluminescente (DEL), un deuxième signal MLI Pour alimenter une deuxième LED et un troisième signal MLI pour alimenter une troisième LED. Chacun du premier, du deuxième et du troisième signal MLI peut avoir la fréquence MLI du signal d'entrée MLI et peut être en phase avec le signal d'entrée MLI.
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