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EP2998952A3 - Image self calibration method and device for lcd displays - Google Patents

Image self calibration method and device for lcd displays Download PDF

Info

Publication number
EP2998952A3
EP2998952A3 EP15400015.2A EP15400015A EP2998952A3 EP 2998952 A3 EP2998952 A3 EP 2998952A3 EP 15400015 A EP15400015 A EP 15400015A EP 2998952 A3 EP2998952 A3 EP 2998952A3
Authority
EP
European Patent Office
Prior art keywords
optical sensor
calibration
display
calibrate
lcd displays
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.)
Withdrawn
Application number
EP15400015.2A
Other languages
German (de)
French (fr)
Other versions
EP2998952A2 (en
Inventor
Chih-Hung Ma
Tsung-Lung Yang
Chih-Wei Kuo
Shih-Pang Wang
Meng-Han Tsai
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.)
Panoramic Imaging Solutions Ltd
Original Assignee
Panoramic Imaging Solutions 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 Panoramic Imaging Solutions Ltd filed Critical Panoramic Imaging Solutions Ltd
Publication of EP2998952A2 publication Critical patent/EP2998952A2/en
Publication of EP2998952A3 publication Critical patent/EP2998952A3/en
Withdrawn legal-status Critical Current

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
    • G09G3/006—Electronic inspection or testing of displays and display drivers, e.g. of LED or LCD displays
    • 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
    • G09G2320/0271—Adjustment of the gradation levels within the range of the gradation scale, e.g. by redistribution or clipping
    • G09G2320/0276—Adjustment of the gradation levels within the range of the gradation scale, e.g. by redistribution or clipping for the purpose of adaptation to the characteristics of a display device, i.e. gamma correction
    • 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
    • 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

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)
  • Controls And Circuits For Display Device (AREA)
  • Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)
  • Liquid Crystal (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)

Abstract

The present invention provides an image self-calibration method and device for LCD displays, comprising a front optical sensor and a calibration reference device. The front optical sensor is employed to calibrate the gray scale level and color temperature of the display. The calibration reference device is employed to pre-calibrate the front optical sensor. The present invention has the following advantages. Image pre-calibration is performed on the installed optical sensor before it leaves a factory, and the calibrated optical sensor directly performs gray scale level and color temperature calibration on the display. The present invention is easy to implement, can effectively inspect and calibrate images on the display, and can save human resources and reduce manufacture and maintenance time.
EP15400015.2A 2014-04-18 2015-04-14 Image self calibration method and device for lcd displays Withdrawn EP2998952A3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
TW103114112A TWI536336B (en) 2014-04-18 2014-04-18 Standalone image calibration of lcd display

Publications (2)

Publication Number Publication Date
EP2998952A2 EP2998952A2 (en) 2016-03-23
EP2998952A3 true EP2998952A3 (en) 2016-07-13

Family

ID=53177323

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15400015.2A Withdrawn EP2998952A3 (en) 2014-04-18 2015-04-14 Image self calibration method and device for lcd displays

Country Status (2)

Country Link
EP (1) EP2998952A3 (en)
TW (1) TWI536336B (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI667610B (en) * 2018-08-07 2019-08-01 鈺緯科技開發股份有限公司 Automatic Gamma curve setting method for display
CN111951745A (en) * 2019-05-16 2020-11-17 钰纬科技开发股份有限公司 Image adjusting device of display and adjusting method thereof
CN112116888B (en) * 2019-06-21 2024-01-30 北京小米移动软件有限公司 Screen calibration method, calibration device and storage medium
CN110609670B (en) * 2019-09-19 2023-10-20 广州视源电子科技股份有限公司 Display characteristic management method, device, equipment and storage medium for display
US20240127768A1 (en) * 2022-01-29 2024-04-18 Boe Technology Group Co., Ltd. Brightness detection method, computer device and readable medium

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7102648B1 (en) * 2000-04-11 2006-09-05 Rah Color Technologies Llc Methods and apparatus for calibrating a color display
US20080246871A1 (en) * 2005-10-06 2008-10-09 Eizo Gmbh Image display unit with sensor device mounted to frame
EP2213993A1 (en) * 2009-01-30 2010-08-04 X-Rite Europe GmbH Calibrating method, colour measuring method and application of the latter

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7102648B1 (en) * 2000-04-11 2006-09-05 Rah Color Technologies Llc Methods and apparatus for calibrating a color display
US20080246871A1 (en) * 2005-10-06 2008-10-09 Eizo Gmbh Image display unit with sensor device mounted to frame
EP2213993A1 (en) * 2009-01-30 2010-08-04 X-Rite Europe GmbH Calibrating method, colour measuring method and application of the latter

Also Published As

Publication number Publication date
EP2998952A2 (en) 2016-03-23
TWI536336B (en) 2016-06-01
TW201541435A (en) 2015-11-01

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