DE602006012439D1 - System and method for setting a backlight level for a display of an electronic device - Google Patents

System and method for setting a backlight level for a display of an electronic device

Info

Publication number
DE602006012439D1
DE602006012439D1 DE602006012439T DE602006012439T DE602006012439D1 DE 602006012439 D1 DE602006012439 D1 DE 602006012439D1 DE 602006012439 T DE602006012439 T DE 602006012439T DE 602006012439 T DE602006012439 T DE 602006012439T DE 602006012439 D1 DE602006012439 D1 DE 602006012439D1
Authority
DE
Germany
Prior art keywords
backlight
image
display
electronic device
backlight level
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
DE602006012439T
Other languages
German (de)
Inventor
Bergen Fletcher
Robert Lowles
James Robinson
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.)
BlackBerry Ltd
Original Assignee
Research in Motion Ltd
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.)
Filing date
Publication date
Application filed by Research in Motion Ltd filed Critical Research in Motion Ltd
Publication of DE602006012439D1 publication Critical patent/DE602006012439D1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • 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
    • 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
    • G09G2320/066—Adjustment of display parameters for control of contrast
    • 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
    • G09G2330/02—Details of power systems and of start or stop of display operation
    • G09G2330/021—Power management, e.g. power saving
    • 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
    • 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
    • G09G3/36—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 using liquid crystals
    • G09G3/3611—Control of matrices with row and column drivers

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Liquid Crystal Display Device Control (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Measuring Pulse, Heart Rate, Blood Pressure Or Blood Flow (AREA)
  • Liquid Crystal (AREA)

Abstract

The invention provides a system and method for calculating a backlight level for an image being displayed on an electronic device (10). In one aspect, a backlight adjustment module is provided. The backlight adjustment module controls a backlight system (64) that provides backlight for a display (14) in an electronic device. The backlight adjustment module provides: calculations of an average intensity for an image being displayed on the display on a running average basis (302) from a greyscale value associated with the image corrected according to a gamma curve and to determine a backlight level for the image using the average intensity, where the darker the image the greater is the backlight level; and controls signals to the backlight system based on the calculations to generate a backlight for the image generated on the display.
DE602006012439T 2006-02-14 2006-02-14 System and method for setting a backlight level for a display of an electronic device Active DE602006012439D1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP06101680A EP1818901B1 (en) 2006-02-14 2006-02-14 System and method for adjusting a backlight level for a display on an electronic device

Publications (1)

Publication Number Publication Date
DE602006012439D1 true DE602006012439D1 (en) 2010-04-08

Family

ID=36177811

Family Applications (1)

Application Number Title Priority Date Filing Date
DE602006012439T Active DE602006012439D1 (en) 2006-02-14 2006-02-14 System and method for setting a backlight level for a display of an electronic device

Country Status (5)

Country Link
EP (2) EP2184732B1 (en)
AT (1) ATE459072T1 (en)
CA (1) CA2574807C (en)
DE (1) DE602006012439D1 (en)
HK (1) HK1108964A1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2099019A1 (en) 2008-02-29 2009-09-09 Research In Motion Limited System and method for adjusting an intensity value and a backlight level for a display of an electronic device
US8194028B2 (en) 2008-02-29 2012-06-05 Research In Motion Limited System and method for adjusting an intensity value and a backlight level for a display of an electronic device
WO2010092179A1 (en) * 2009-02-16 2010-08-19 Arcelik Anonim Sirketi A display device and the control method thereof
CN110288952B (en) * 2019-06-24 2021-07-16 湖北亿咖通科技有限公司 Method and device for setting backlight brightness of vehicle-mounted system during startup
CN113192464B (en) * 2020-01-14 2023-01-13 华为技术有限公司 Backlight adjusting method and electronic equipment

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03179886A (en) 1989-12-07 1991-08-05 Toshiba Corp Projection type liquid crystal display device
TW518882B (en) 2000-03-27 2003-01-21 Hitachi Ltd Liquid crystal display device for displaying video data
US6762741B2 (en) * 2000-12-22 2004-07-13 Visteon Global Technologies, Inc. Automatic brightness control system and method for a display device using a logarithmic sensor
US7093941B2 (en) * 2001-04-25 2006-08-22 Matsushita Electric Industrial Co., Ltd. Video display apparatus and video display method

Also Published As

Publication number Publication date
EP2184732B1 (en) 2014-12-17
EP1818901B1 (en) 2010-02-24
HK1108964A1 (en) 2008-05-23
EP1818901A1 (en) 2007-08-15
CA2574807C (en) 2012-04-03
ATE459072T1 (en) 2010-03-15
CA2574807A1 (en) 2007-08-14
EP2184732A1 (en) 2010-05-12

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition