ES2490142T3 - Método de computación de corrientes de control para una pluralidad de LED en un píxel de un letrero para alcanzar un color deseado con una intensidad luminosa deseada - Google Patents

Método de computación de corrientes de control para una pluralidad de LED en un píxel de un letrero para alcanzar un color deseado con una intensidad luminosa deseada Download PDF

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Publication number
ES2490142T3
ES2490142T3 ES08782632.7T ES08782632T ES2490142T3 ES 2490142 T3 ES2490142 T3 ES 2490142T3 ES 08782632 T ES08782632 T ES 08782632T ES 2490142 T3 ES2490142 T3 ES 2490142T3
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Spain
Prior art keywords
color
control currents
leds
light intensity
desired color
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Application number
ES08782632.7T
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English (en)
Inventor
Paul O. Scheibe
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Landmark Screens LLC
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Landmark Screens LLC
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Classifications

    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/04—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of a single character by selection from a plurality of characters, or by composing the character by combination of individual elements, e.g. segments using a combination of such display devices for composing words, rows or the like, in a frame with fixed character positions
    • G09G3/06—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of a single character by selection from a plurality of characters, or by composing the character by combination of individual elements, e.g. segments using a combination of such display devices for composing words, rows or the like, in a frame with fixed character positions using controlled light sources
    • G09G3/12—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of a single character by selection from a plurality of characters, or by composing the character by combination of individual elements, e.g. segments using a combination of such display devices for composing words, rows or the like, in a frame with fixed character positions using controlled light sources using electroluminescent elements
    • G09G3/14—Semiconductor devices, e.g. diodes
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2300/00—Aspects of the constitution of display devices
    • G09G2300/04—Structural and physical details of display devices
    • G09G2300/0439—Pixel structures
    • G09G2300/0452—Details of colour pixel setup, e.g. pixel composed of a red, a blue and two green components
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/02—Improving the quality of display appearance
    • G09G2320/029—Improving the quality of display appearance by monitoring one or more pixels in the display panel, e.g. by monitoring a fixed reference pixel
    • G09G2320/0295—Improving the quality of display appearance by monitoring one or more pixels in the display panel, e.g. by monitoring a fixed reference pixel by monitoring each display pixel
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/06—Adjustment of display parameters
    • G09G2320/0666—Adjustment of display parameters for control of colour parameters, e.g. colour temperature
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/06—Adjustment of display parameters
    • G09G2320/0693—Calibration of display systems
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2330/00—Aspects of power supply; Aspects of display protection and defect management
    • G09G2330/10—Dealing with defective pixels
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2360/00—Aspects of the architecture of display systems
    • G09G2360/14—Detecting light within display terminals, e.g. using a single or a plurality of photosensors
    • G09G2360/145—Detecting light within display terminals, e.g. using a single or a plurality of photosensors the light originating from the display screen
    • G09G2360/147—Detecting light within display terminals, e.g. using a single or a plurality of photosensors the light originating from the display screen the originated light output being determined for each pixel
    • G09G2360/148—Detecting light within display terminals, e.g. using a single or a plurality of photosensors the light originating from the display screen the originated light output being determined for each pixel the light being detected by light detection means within each pixel
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/2003—Display of colours
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
    • G09G5/02—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators characterised by the way in which colour is displayed

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Control Of El Displays (AREA)

Abstract

Un método de computación de corrientes de control para una pluralidad de LED (101, 102, 103, 104 y 105) en un píxel (700) de un letrero con el fin de alcanzar un color deseado con una intensidad luminosa deseada, siendo la pluralidad de 5 LED (101, 102, 103, 104 y 105) de más de tres colores básicos que definen una gama de colores (120), y que comprende: la selección de diferentes combinaciones de LED; para cada combinación de LED, la computación de las corrientes de control para los LED en la combinación requerida para proporcionar (a) el color deseado, cuando el color deseado se encuentre dentro de la gama de colores (120), o (b) un color sustituto, cuando el color deseado se encuentre fuera de la gama de colores, de tal forma que la intensidad luminosa resultante del color deseado o sustituto sea la máxima; el color sustituto es un color a lo largo de una línea de matiz constante percibido en un límite de la gama (120) entre el color deseado y un punto acromático dentro de la gama; y el uso de las corrientes de control computadas, escalando las corrientes de control para alcanzar la intensidad luminosa deseada en el color deseado, en el que las corrientes de control para cada color seleccionado se computan en un espacio de color uniforme.

Description

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Claims (1)

  1. imagen1
ES08782632.7T 2007-08-08 2008-08-06 Método de computación de corrientes de control para una pluralidad de LED en un píxel de un letrero para alcanzar un color deseado con una intensidad luminosa deseada Active ES2490142T3 (es)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US11/836,125 US9779644B2 (en) 2007-08-08 2007-08-08 Method for computing drive currents for a plurality of LEDs in a pixel of a signboard to achieve a desired color at a desired luminous intensity
US836125 2007-08-08
PCT/US2008/072282 WO2009021002A1 (en) 2007-08-08 2008-08-06 Method for computing drive currents for a plurality of leds in a pixel of a signboard to achieve a desired color at a desired luminous intensity

Publications (1)

Publication Number Publication Date
ES2490142T3 true ES2490142T3 (es) 2014-09-03

Family

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ES08782632.7T Active ES2490142T3 (es) 2007-08-08 2008-08-06 Método de computación de corrientes de control para una pluralidad de LED en un píxel de un letrero para alcanzar un color deseado con una intensidad luminosa deseada

Country Status (6)

Country Link
US (1) US9779644B2 (es)
EP (1) EP2181443B1 (es)
CN (1) CN101816029B (es)
BR (1) BRPI0815027B1 (es)
ES (1) ES2490142T3 (es)
WO (1) WO2009021002A1 (es)

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Also Published As

Publication number Publication date
CN101816029B (zh) 2013-01-30
EP2181443A1 (en) 2010-05-05
CN101816029A (zh) 2010-08-25
BRPI0815027B1 (pt) 2021-01-19
US20090040154A1 (en) 2009-02-12
US9779644B2 (en) 2017-10-03
BRPI0815027A2 (pt) 2015-06-16
EP2181443B1 (en) 2014-05-07
WO2009021002A1 (en) 2009-02-12

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