ES2527212T3 - Procedimiento para compensar la atenuación local de una retroiluminación - Google Patents

Procedimiento para compensar la atenuación local de una retroiluminación Download PDF

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Publication number
ES2527212T3
ES2527212T3 ES11156618.8T ES11156618T ES2527212T3 ES 2527212 T3 ES2527212 T3 ES 2527212T3 ES 11156618 T ES11156618 T ES 11156618T ES 2527212 T3 ES2527212 T3 ES 2527212T3
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ES
Spain
Prior art keywords
prominence
image
calculated
windows
values
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
ES11156618.8T
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English (en)
Inventor
Emrah Tasli
Cevahir Cigla
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.)
Vestel Elektronik Sanayi ve Ticaret AS
Original Assignee
Vestel Elektronik Sanayi ve Ticaret AS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by Vestel Elektronik Sanayi ve Ticaret AS filed Critical Vestel Elektronik Sanayi ve Ticaret AS
Application granted granted Critical
Publication of ES2527212T3 publication Critical patent/ES2527212T3/es
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • G09G3/20—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
    • G09G3/34—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 by control of light from an independent source
    • G09G3/3406—Control of illumination source
    • G09G3/342—Control of illumination source using several illumination sources separately controlled corresponding to different display panel areas, e.g. along one dimension such as lines
    • G09G3/3426—Control of illumination source using several illumination sources separately controlled corresponding to different display panel areas, e.g. along one dimension such as lines the different display panel areas being distributed in two dimensions, e.g. matrix
    • 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
    • G09G2320/0233—Improving the luminance or brightness uniformity across the screen
    • 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
    • G09G2320/0626—Adjustment of display parameters for control of overall brightness
    • G09G2320/0646—Modulation of illumination source brightness and image signal correlated to each other
    • 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
    • G09G2320/0626—Adjustment of display parameters for control of overall brightness
    • G09G2320/0653—Controlling or limiting the speed of brightness adjustment of the illumination source
    • 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
    • G09G2360/16—Calculation or use of calculated indices related to luminance levels in display data

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)
  • Liquid Crystal (AREA)
  • Liquid Crystal Display Device Control (AREA)
  • Image Processing (AREA)

Abstract

Procedimiento para la compensación de atenuación local en pantallas retroiluminadas de LED, utilizando rasgos prominentes, que comprende las etapas de: - Cálculo de valores de mando de LED de acuerdo con las intensidades regionales correspondientes de una imagen, - División de dicha imagen en ventanas de determinados tamaños y calcular los valores medios de intensidad de cada una de dichas ventanas, - Extracción de un mapa de prominencia de dicha imagen que consta de las prominencias de los píxeles de la imagen, en la que la prominencia de un píxel se basa en la desviación, en términos de intensidad, del píxel respecto de píxeles circundantes y se calcula utilizando dichos valores medios de intensidad de dichas ventanas, - Cálculo de un histograma de dicho mapa de prominencia para cada región de LED localmente controlable y un nivel de prominencia la región de LED localmente controlable mediante la realización de una suma ponderada de los valores de histograma calculados de acuerdo con los pesos de una función de ponderación, - Intensificar los valores de mando de LED calculados de acuerdo con los niveles de prominencia calculados de las correspondientes regiones de LED controlables localmente

Description

imagen1
imagen2
imagen3
imagen4

Claims (1)

  1. imagen1
ES11156618.8T 2010-03-09 2011-03-02 Procedimiento para compensar la atenuación local de una retroiluminación Active ES2527212T3 (es)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TR201001776 2010-03-09
TR2010/01776A TR201001776A2 (tr) 2010-03-09 2010-03-09 Belirgin öznitelikler kullanılarak bölgesel ışik kontrolü yöntemi.

Publications (1)

Publication Number Publication Date
ES2527212T3 true ES2527212T3 (es) 2015-01-21

Family

ID=43881079

Family Applications (1)

Application Number Title Priority Date Filing Date
ES11156618.8T Active ES2527212T3 (es) 2010-03-09 2011-03-02 Procedimiento para compensar la atenuación local de una retroiluminación

Country Status (3)

Country Link
EP (1) EP2372686B1 (es)
ES (1) ES2527212T3 (es)
TR (1) TR201001776A2 (es)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105489191A (zh) * 2014-09-18 2016-04-13 北京三星通信技术研究有限公司 一种显示设备及其显示方法
TWI745038B (zh) * 2020-08-20 2021-11-01 瑞鼎科技股份有限公司 非等差的脈寬調變調光方法
CN113326016B (zh) * 2021-08-04 2021-10-22 卡莱特云科技股份有限公司 一种led显示屏对比度提升方法、装置及计算机设备
CN117940965A (zh) * 2021-09-15 2024-04-26 华为技术有限公司 一种背光显示的控制方法及装置

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7855725B2 (en) * 2007-09-26 2010-12-21 Himax Technologies Limited Method of controlling backlight module, backlight controller and display device using the same
US8917293B2 (en) * 2008-06-27 2014-12-23 Sharp Kabushiki Kaisha Control device for liquid crystal display device, liquid crystal display device, method for controlling liquid crystal display device, program, and storage medium
CN101354875B (zh) 2008-09-16 2010-09-08 彩虹集团公司 一种液晶用led背光驱动方法
CN201315148Y (zh) 2008-11-14 2009-09-23 康佳集团股份有限公司 用于液晶电视的led背光源区域发光控制装置
CN201315147Y (zh) 2008-11-18 2009-09-23 康佳集团股份有限公司 一种用于液晶电视的led背光源动态控制装置

Also Published As

Publication number Publication date
TR201001776A2 (tr) 2011-09-21
EP2372686B1 (en) 2014-10-08
EP2372686A1 (en) 2011-10-05

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