WO2000021303A1 - η CORRECTION CIRCUIT AND η CORRECTION METHOD - Google Patents
η CORRECTION CIRCUIT AND η CORRECTION METHOD Download PDFInfo
- Publication number
- WO2000021303A1 WO2000021303A1 PCT/JP1999/005472 JP9905472W WO0021303A1 WO 2000021303 A1 WO2000021303 A1 WO 2000021303A1 JP 9905472 W JP9905472 W JP 9905472W WO 0021303 A1 WO0021303 A1 WO 0021303A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- correction
- value
- correction circuit
- executing
- primary conversion
- Prior art date
Links
- 238000012937 correction Methods 0.000 title claims abstract description 135
- 238000000034 method Methods 0.000 title claims description 7
- 238000006243 chemical reaction Methods 0.000 claims abstract description 90
- 239000004973 liquid crystal related substance Substances 0.000 claims description 6
- 235000019557 luminance Nutrition 0.000 description 35
- 238000010586 diagram Methods 0.000 description 12
- 230000014509 gene expression Effects 0.000 description 7
- 239000003086 colorant Substances 0.000 description 2
- 241001270131 Agaricus moelleri Species 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
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
- G09G3/2092—Details of a display terminals using a flat panel, the details relating to the control arrangement of the display terminal and to the interfaces thereto
- G09G3/2096—Details of the interface to the display terminal specific for a flat panel
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/64—Circuits for processing colour signals
- H04N9/68—Circuits for processing colour signals for controlling the amplitude of colour signals, e.g. automatic chroma control circuits
- H04N9/69—Circuits for processing colour signals for controlling the amplitude of colour signals, e.g. automatic chroma control circuits for modifying the colour signals by gamma correction
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/14—Picture signal circuitry for video frequency region
- H04N5/20—Circuitry for controlling amplitude response
- H04N5/202—Gamma control
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/66—Transforming electric information into light information
-
- 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
- G09G2320/066—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
- 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
- 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)
- Multimedia (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Processing Of Color Television Signals (AREA)
- Picture Signal Circuits (AREA)
- Controls And Circuits For Display Device (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Transforming Electric Information Into Light Information (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020007005877A KR100342964B1 (en) | 1998-10-06 | 1999-10-05 | γCORRECTION CIRCUIT AND γ CORRECTION METHOD |
EP99970243A EP1046307A1 (en) | 1998-10-06 | 1999-10-05 | Gamma correction circuit and gamma correction method |
AU60031/99A AU739565B2 (en) | 1998-10-06 | 1999-10-05 | Gamma correction circuit and gamma correction method |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP28369098 | 1998-10-06 | ||
JP10/283690 | 1998-10-06 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2000021303A1 true WO2000021303A1 (en) | 2000-04-13 |
Family
ID=17668826
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP1999/005472 WO2000021303A1 (en) | 1998-10-06 | 1999-10-05 | η CORRECTION CIRCUIT AND η CORRECTION METHOD |
Country Status (7)
Country | Link |
---|---|
US (1) | US6340996B1 (en) |
EP (1) | EP1046307A1 (en) |
KR (1) | KR100342964B1 (en) |
CN (1) | CN1277785A (en) |
AU (1) | AU739565B2 (en) |
TW (1) | TW454415B (en) |
WO (1) | WO2000021303A1 (en) |
Families Citing this family (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TW508560B (en) * | 2001-04-03 | 2002-11-01 | Chunghwa Picture Tubes Ltd | Method for performing different anti-compensation processes by segments on image gray levels inputted to plasma flat display |
US7038721B2 (en) * | 2002-02-15 | 2006-05-02 | Koninklijke Philips Electronics N.V. | Gamma correction circuit |
KR100493293B1 (en) * | 2002-10-31 | 2005-06-02 | 엘지전자 주식회사 | Method for interpolating gamma of video signal using the nonlinear sampling |
US7042523B2 (en) * | 2003-06-30 | 2006-05-09 | Texas Instruments Incorporated | Video correction system and method using logarithmic conversion |
US7154562B1 (en) * | 2003-10-14 | 2006-12-26 | Cirrus Logic, Inc. | Methods and circuits for implementing programmable gamma correction |
KR100533727B1 (en) * | 2003-12-01 | 2005-12-06 | 엘지전자 주식회사 | Apparatus for Driving Plasma Display Panel |
EP1758075A1 (en) * | 2004-06-18 | 2007-02-28 | Kabushiki Kaisha Toshiba | Video display device and video display device luminance characteristic correction method |
CN100446464C (en) * | 2006-04-29 | 2008-12-24 | 华为技术有限公司 | Method for correcting video stream gamma characteristic |
US8614719B2 (en) * | 2006-07-12 | 2013-12-24 | Freescale Semiconductor, Inc. | Method for gamma correction and a device having gamma correction capabilities |
TWI315151B (en) | 2006-11-10 | 2009-09-21 | Ind Tech Res Inst | System and method of performing multi-scaled clocks for dynamic gamma correction |
JP4428389B2 (en) * | 2007-01-25 | 2010-03-10 | 船井電機株式会社 | Information output unit and electronic device |
KR101264718B1 (en) * | 2007-04-02 | 2013-05-16 | 엘지디스플레이 주식회사 | Method and Apparatus for Compensating Display Defect of Flat Display |
KR101517360B1 (en) * | 2008-12-05 | 2015-05-04 | 삼성전자주식회사 | Apparatus and method for enhancing image based on luminance information of pixel |
KR101349782B1 (en) * | 2011-12-08 | 2014-01-16 | 엘지디스플레이 주식회사 | Timing controller, liquid crystal display device comprising timing controller and driving method of liquid crystal display device |
KR102454423B1 (en) * | 2015-10-29 | 2022-10-17 | 삼성디스플레이 주식회사 | Display device |
Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5298915A (en) * | 1989-04-10 | 1994-03-29 | Cirrus Logic, Inc. | System and method for producing a palette of many colors on a display screen having digitally-commanded pixels |
US5303055A (en) * | 1991-12-05 | 1994-04-12 | Texas Instruments Incorporated | Method and apparatus to improve a video signal |
EP0606993A2 (en) * | 1993-01-11 | 1994-07-20 | Canon Kabushiki Kaisha | Colour gamut clipping |
US5483256A (en) * | 1993-01-05 | 1996-01-09 | Nec Corporation | LCD driving analog nonlinear operation circuit producing a composite drive voltage of function voltages of differential amplifiers |
EP0708433A2 (en) * | 1994-10-20 | 1996-04-24 | Canon Kabushiki Kaisha | Display control apparatus and method |
US5546101A (en) * | 1993-03-02 | 1996-08-13 | Fujitsu General Limited | Color display unit with plasma display panel |
US5610666A (en) * | 1994-12-19 | 1997-03-11 | Nec Corporation | Gamma correcting circuit |
EP0810778A2 (en) * | 1996-05-31 | 1997-12-03 | SANYO ELECTRIC Co., Ltd. | Digital still camera with a gamma correction circuit |
EP0831643A2 (en) * | 1996-09-18 | 1998-03-25 | Matsushita Electric Industrial Co., Ltd. | Plasma display panel and method of controlling brightness of the same |
EP0947975A1 (en) * | 1998-04-02 | 1999-10-06 | Hitachi, Ltd. | Gamma correction circuit |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2924079B2 (en) | 1990-05-14 | 1999-07-26 | ソニー株式会社 | Gamma correction circuit |
JPH04271577A (en) | 1991-02-27 | 1992-09-28 | Toshiba Corp | Gamma correction system for liquid crystal display device |
JPH07152347A (en) | 1993-11-29 | 1995-06-16 | Sanyo Electric Co Ltd | Gamma characteristic correcting method for liquid crystal display device and liquid crystal display device |
JPH0818826A (en) | 1994-06-27 | 1996-01-19 | Sharp Corp | Digital gamma correction circuit |
JP3766998B2 (en) | 1995-12-20 | 2006-04-19 | ソニー株式会社 | Gamma correction circuit |
JPH10145806A (en) | 1996-11-08 | 1998-05-29 | Fujitsu General Ltd | White balance adjustment circuit |
-
1999
- 1999-10-05 WO PCT/JP1999/005472 patent/WO2000021303A1/en not_active Application Discontinuation
- 1999-10-05 TW TW088117134A patent/TW454415B/en not_active IP Right Cessation
- 1999-10-05 CN CN99801527A patent/CN1277785A/en active Pending
- 1999-10-05 AU AU60031/99A patent/AU739565B2/en not_active Ceased
- 1999-10-05 EP EP99970243A patent/EP1046307A1/en not_active Ceased
- 1999-10-05 US US09/412,509 patent/US6340996B1/en not_active Expired - Fee Related
- 1999-10-05 KR KR1020007005877A patent/KR100342964B1/en not_active IP Right Cessation
Patent Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5298915A (en) * | 1989-04-10 | 1994-03-29 | Cirrus Logic, Inc. | System and method for producing a palette of many colors on a display screen having digitally-commanded pixels |
US5303055A (en) * | 1991-12-05 | 1994-04-12 | Texas Instruments Incorporated | Method and apparatus to improve a video signal |
US5483256A (en) * | 1993-01-05 | 1996-01-09 | Nec Corporation | LCD driving analog nonlinear operation circuit producing a composite drive voltage of function voltages of differential amplifiers |
EP0606993A2 (en) * | 1993-01-11 | 1994-07-20 | Canon Kabushiki Kaisha | Colour gamut clipping |
US5546101A (en) * | 1993-03-02 | 1996-08-13 | Fujitsu General Limited | Color display unit with plasma display panel |
EP0708433A2 (en) * | 1994-10-20 | 1996-04-24 | Canon Kabushiki Kaisha | Display control apparatus and method |
US5610666A (en) * | 1994-12-19 | 1997-03-11 | Nec Corporation | Gamma correcting circuit |
EP0810778A2 (en) * | 1996-05-31 | 1997-12-03 | SANYO ELECTRIC Co., Ltd. | Digital still camera with a gamma correction circuit |
EP0831643A2 (en) * | 1996-09-18 | 1998-03-25 | Matsushita Electric Industrial Co., Ltd. | Plasma display panel and method of controlling brightness of the same |
EP0947975A1 (en) * | 1998-04-02 | 1999-10-06 | Hitachi, Ltd. | Gamma correction circuit |
Also Published As
Publication number | Publication date |
---|---|
AU739565B2 (en) | 2001-10-18 |
KR20010024672A (en) | 2001-03-26 |
AU6003199A (en) | 2000-04-26 |
EP1046307A1 (en) | 2000-10-25 |
TW454415B (en) | 2001-09-11 |
CN1277785A (en) | 2000-12-20 |
US6340996B1 (en) | 2002-01-22 |
KR100342964B1 (en) | 2002-07-05 |
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