FR3124444B1 - Alimentation d’une matrice de sources lumineuses pour une fonction dynamique - Google Patents

Alimentation d’une matrice de sources lumineuses pour une fonction dynamique Download PDF

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Publication number
FR3124444B1
FR3124444B1 FR2106719A FR2106719A FR3124444B1 FR 3124444 B1 FR3124444 B1 FR 3124444B1 FR 2106719 A FR2106719 A FR 2106719A FR 2106719 A FR2106719 A FR 2106719A FR 3124444 B1 FR3124444 B1 FR 3124444B1
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France
Prior art keywords
light sources
subset
matrix
duty cycles
powering
Prior art date
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Active
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FR2106719A
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English (en)
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FR3124444A1 (fr
Inventor
Rabih Taleb
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Valeo Vision SAS
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Valeo Vision SAS
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Publication date
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Priority to FR2106719A priority Critical patent/FR3124444B1/fr
Publication of FR3124444A1 publication Critical patent/FR3124444A1/fr
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Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/10—Controlling the intensity of the light
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/40—Details of LED load circuits
    • H05B45/44—Details of LED load circuits with an active control inside an LED matrix
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/50—Circuit arrangements for operating light-emitting diodes [LED] responsive to malfunctions or undesirable behaviour of LEDs; responsive to LED life; Protective circuits
    • H05B45/56—Circuit arrangements for operating light-emitting diodes [LED] responsive to malfunctions or undesirable behaviour of LEDs; responsive to LED life; Protective circuits involving measures to prevent abnormal temperature of the LEDs

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  • Semiconductor Lasers (AREA)

Abstract

L’invention concerne procédé de contrôle de l’alimentation d’une matrice de sources lumineuses par modulation de largeur d’impulsion. A un instant courant, un module de commande détermine (402) des rapports cycliques courants des sources lumineuses de la matrice puis modifie (403) le premier sous-ensemble et/ou le deuxième sous-ensemble de manière à ce que les rapports cycliques courants des sources lumineuses du premier sous-ensemble soient inférieurs aux rapports cycliques courants du deuxième sous-ensemble. Le module de commande augmente (404), d’un facteur donné, les rapports cycliques courants des sources lumineuses du premier sous-ensemble et diminue (405), du facteur donné, une valeur d’alimentation crête du premier dispositif de pilotage. FIG. 4
FR2106719A 2021-06-23 2021-06-23 Alimentation d’une matrice de sources lumineuses pour une fonction dynamique Active FR3124444B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR2106719A FR3124444B1 (fr) 2021-06-23 2021-06-23 Alimentation d’une matrice de sources lumineuses pour une fonction dynamique

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR2106719A FR3124444B1 (fr) 2021-06-23 2021-06-23 Alimentation d’une matrice de sources lumineuses pour une fonction dynamique
FR2106719 2021-06-23

Publications (2)

Publication Number Publication Date
FR3124444A1 FR3124444A1 (fr) 2022-12-30
FR3124444B1 true FR3124444B1 (fr) 2023-05-12

Family

ID=77021571

Family Applications (1)

Application Number Title Priority Date Filing Date
FR2106719A Active FR3124444B1 (fr) 2021-06-23 2021-06-23 Alimentation d’une matrice de sources lumineuses pour une fonction dynamique

Country Status (1)

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FR (1) FR3124444B1 (fr)

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6734587B2 (ja) * 2016-05-13 2020-08-05 株式会社ワイズテックファクトリー Ｌｅｄを用いた照明装置、ｌｅｄを用いた照明装置の駆動回路及びｌｅｄを用いた照明装置の駆動方法
FR3065822B1 (fr) * 2017-04-28 2020-08-28 Valeo Vision Procede et systeme de pilotage du courant electrique au sein d'une source lumineuse a semi-conducteur definissant au moins deux zones d'emission lumineuse distinctes

Also Published As

Publication number Publication date
FR3124444A1 (fr) 2022-12-30

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