Global Patent Index - EP 2258146 B1

EP 2258146 B1 20120523 - SYSTEM AND METHOD FOR CONTROLLING LEDS

Title (en)

SYSTEM AND METHOD FOR CONTROLLING LEDS

Title (de)

SYSTEME UND VERFAHREN ZUR LED-STEUERUNG

Title (fr)

SYSTÈME ET PROCÉDÉ POUR COMMANDER DES LED

Publication

EP 2258146 B1 (EN)

Application

EP 09726563 A

Priority

  • EP 2009002296 W
  • DE 102008016756 A

Abstract (en)

[origin: WO2009121539A1] The present invention generally relates to the generation of a light color by mixing a plurality of light emitting diodes (LEDs). More particularly, the invention is directed to the generation of a desired color and to the control of LEDs in order to obtain the desired color by mixing the light produced by the respective LEDs. It is proposed a method for controlling a plurality of at least four light emitting diodes or LEDs for generating a desired light or color, comprising applying (5) a pseudo- inverse matrix (M-1) to the coordinate values (Xref, Yref, Zref) of the desired light, said coordinate values (Xref, Yref, Zref) being expressed in a color space, wherein the pseudo-inverse matrix (M-1) is the pseudo-inverse of a gain matrix (M) reflecting the influence of each LED on said color space.

IPC 8 full level

H05B 33/08 (2006.01)

CPC (source: EP)

H05B 45/20 (2020.01)

Designated contracting state (EPC)

AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK TR

DOCDB simple family (publication)

DE 102008016756 A1 20091001; EP 2258146 A1 20101208; EP 2258146 B1 20120523; WO 2009121539 A1 20091008

DOCDB simple family (application)

DE 102008016756 A 20080331; EP 09726563 A 20090330; EP 2009002296 W 20090330