JP6136030B2 - 映像表示制御装置 - Google Patents
映像表示制御装置 Download PDFInfo
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- JP6136030B2 JP6136030B2 JP2015198640A JP2015198640A JP6136030B2 JP 6136030 B2 JP6136030 B2 JP 6136030B2 JP 2015198640 A JP2015198640 A JP 2015198640A JP 2015198640 A JP2015198640 A JP 2015198640A JP 6136030 B2 JP6136030 B2 JP 6136030B2
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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
- G09G3/2003—Display of colours
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/13306—Circuit arrangements or driving methods for the control of single liquid crystal cells
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
-
- 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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/431—Generation of visual interfaces for content selection or interaction; Content or additional data rendering
- H04N21/4318—Generation of visual interfaces for content selection or interaction; Content or additional data rendering by altering the content in the rendering process, e.g. blanking, blurring or masking an image region
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
- H04N5/57—Control of contrast or brightness
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133601—Illuminating devices for spatial active dimming
-
- 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
- G09G2320/0626—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
- G09G2320/066—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
- G09G2320/0673—Adjustment of display parameters for control of gamma adjustment, e.g. selecting another gamma curve
-
- 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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/44—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs
- H04N21/44008—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs involving operations for analysing video streams, e.g. detecting features or characteristics in the video stream
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Nonlinear Science (AREA)
- General Physics & Mathematics (AREA)
- Signal Processing (AREA)
- Multimedia (AREA)
- Crystallography & Structural Chemistry (AREA)
- Optics & Photonics (AREA)
- Chemical & Material Sciences (AREA)
- Mathematical Physics (AREA)
- Computer Hardware Design (AREA)
- Theoretical Computer Science (AREA)
- Liquid Crystal Display Device Control (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Liquid Crystal (AREA)
Description
領域Aの傾き=HA/{(HA+HB+HC+HD)×64}
領域Bの傾き=HB/{(HA+HB+HC+HD)×64}
領域Cの傾き=HC/{(HA+HB+HC+HD)×64}
領域Dの傾き=HD/{(HA+HB+HC+HD)×64}
シフト量S1=APL−APL1 …(1)
シフト量S2=APL−APL2 …(2)
11 映像処理LSI
111 特徴検出部
112 映像信号処理部
12 ディスプレイ
121 画面
122 バックライト
131 制御データ生成部
14 バックライト制御部
2 映像源
Claims (4)
- 画面と前記画面に向けて発光するバックライトとを有したディスプレイへの映像の表示を制御する映像表示制御装置であって、
当該映像表示制御装置に入力された映像信号の平均輝度及び輝度に関するヒストグラム度数を検出する特徴検出部と、
前記特徴検出部が検出した値を用いて、前記入力された映像信号の輝度の階調を任意の複数の領域に分けて前記特徴検出部が検出した全体のヒストグラム度数に対する前記複数の領域の各領域が占めるヒストグラム度数の割合を示すガンマ特性の傾きを変化させて、前記入力された映像信号を補正するための制御データを生成する制御データ生成部と、
前記制御データ生成部が生成した制御データに基づいて前記入力された映像信号を補正して、補正後の映像信号を前記ディスプレイに出力する映像信号処理部と、
前記映像信号の平均輝度と前記補正後の映像信号の平均輝度との差分に基づいて前記バックライトの発光量を制御するバックライト制御部と、を備え、
前記制御データ生成部は、
前記複数の領域のうち前記輝度の階調が最も高い領域のガンマ特性の傾きを小さくして該小さくしたガンマ特性の傾きの量または割合に応じて、前記複数の領域のうち前記輝度の階調が高い領域を除く他の複数の領域のガンマ特性の傾きを前記他の複数の領域のそれぞれに対して重み付けした量または割合で大きくする制御データを生成し、
前記バックライト制御部は、前記入力された映像信号の平均輝度に対する前記補正後の映像信号の平均輝度の増減に応じて、前記画面に表示される映像の平均輝度の増減を打ち消すように前記バックライトの発光輝度を制御することを特徴とする映像表示制御装置。 - 前記制御データ生成部は、前記制御データの生成において、前記複数の領域のうち前記輝度の階調が最も高い領域のガンマ特性の傾きを小さくする際の量または割合を、前記複数の領域のうち前記輝度の階調が最も高い領域のヒストグラム度数に応じて決定することを特徴とする請求項1に記載の映像表示制御装置。
- 前記制御データ生成部は、
前記小さくしたガンマ特性の傾きの量または割合を前記輝度の階調が最も高い領域のヒストグラム度数に応じて決定し、前記輝度の階調が最も高い領域のガンマ特性の傾きを小さくする際の変化量または変化の割合は、前記輝度の階調が最も高い領域のヒストグラム度数が第一の閾値よりも小さい場合に増加させ、前記輝度の階調が高い領域のヒストグラム度数が第二の閾値よりも大きい場合に減少させる制御データを生成することを特徴とする請求項2に記載の映像表示制御装置。 - 前記制御データ生成部は、前記輝度の階調が最も高い領域のヒストグラム度数が前記第一の閾値よりも大きく前記第二の閾値よりも小さい場合は、前記輝度の階調が最も高い領域のヒストグラム度数が高いほど、前記輝度の階調が最も高い領域のガンマ特性の傾きを小さくする際の変化の量または変化の割合を減らすことを特徴とする請求項3に記載の映像表示制御装置。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2015198640A JP6136030B2 (ja) | 2010-08-26 | 2015-10-06 | 映像表示制御装置 |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2010189003 | 2010-08-26 | ||
| JP2010189003 | 2010-08-26 | ||
| JP2015198640A JP6136030B2 (ja) | 2010-08-26 | 2015-10-06 | 映像表示制御装置 |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2012530534A Division JP5884060B2 (ja) | 2010-08-26 | 2011-08-23 | 映像表示制御装置 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2016048377A JP2016048377A (ja) | 2016-04-07 |
| JP6136030B2 true JP6136030B2 (ja) | 2017-05-31 |
Family
ID=45723132
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2012530534A Active JP5884060B2 (ja) | 2010-08-26 | 2011-08-23 | 映像表示制御装置 |
| JP2015198640A Active JP6136030B2 (ja) | 2010-08-26 | 2015-10-06 | 映像表示制御装置 |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2012530534A Active JP5884060B2 (ja) | 2010-08-26 | 2011-08-23 | 映像表示制御装置 |
Country Status (5)
| Country | Link |
|---|---|
| US (2) | US9124851B2 (ja) |
| EP (2) | EP2945150A1 (ja) |
| JP (2) | JP5884060B2 (ja) |
| CN (1) | CN103069478B (ja) |
| WO (1) | WO2012026110A1 (ja) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013114805A1 (ja) * | 2012-02-03 | 2013-08-08 | パナソニック株式会社 | 映像表示制御装置 |
| CN104956670B (zh) | 2013-01-25 | 2017-09-08 | 杜比实验室特许公司 | 基于全局显示管理的光调制 |
| JP6543442B2 (ja) | 2014-07-30 | 2019-07-10 | ルネサスエレクトロニクス株式会社 | 画像処理装置および画像処理方法 |
| US9483982B1 (en) * | 2015-05-05 | 2016-11-01 | Dreamscreen Llc | Apparatus and method for television backlignting |
| WO2018110056A1 (ja) * | 2016-12-14 | 2018-06-21 | シャープ株式会社 | 光源制御装置、表示装置、画像処理装置、光源制御装置の制御方法、および制御プログラム |
| CN106847152A (zh) * | 2017-01-19 | 2017-06-13 | 北京小米移动软件有限公司 | 对比度提升方法及装置 |
| US10242628B2 (en) * | 2017-05-18 | 2019-03-26 | Dell Products, L.P. | Light Emitting Diode (LED) backlight control for reproduction of High Dynamic Range (HDR) content using Standard Dynamic Range (SDR) Liquid Crystal Display (LCD) panels |
| KR102533723B1 (ko) * | 2018-09-14 | 2023-05-18 | 삼성전자주식회사 | 전자 장치 및 그 제어 방법 |
| EP4325832A4 (en) * | 2021-07-05 | 2024-11-27 | Samsung Electronics Co., Ltd. | ELECTRONIC DEVICE AND METHOD FOR CHANGING GAMMA ACCORDING TO SAMPLING RATE |
| CN114724522B (zh) * | 2022-05-05 | 2025-02-18 | 深圳创维-Rgb电子有限公司 | 显示设备背光亮度的调节方法、装置、显示设备及介质 |
Family Cites Families (25)
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| JPH09233336A (ja) * | 1996-02-20 | 1997-09-05 | Fuji Xerox Co Ltd | 画像処理装置 |
| JP2001125535A (ja) | 1999-10-29 | 2001-05-11 | Fujitsu General Ltd | 画質補正回路 |
| CA2333622A1 (en) | 1999-03-31 | 2000-10-12 | Fujitsu General Limited | Image quality correcting circuit |
| TWI285871B (en) * | 1999-05-10 | 2007-08-21 | Matsushita Electric Industrial Co Ltd | Image display device and method for displaying image |
| JP3971892B2 (ja) | 2000-09-08 | 2007-09-05 | 株式会社日立製作所 | 液晶表示装置 |
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| JP5104886B2 (ja) | 2004-08-05 | 2012-12-19 | 日本精工株式会社 | ステアリングコラム装置 |
| JP2006101421A (ja) | 2004-09-30 | 2006-04-13 | Toshiba Corp | 映像信号処理回路 |
| JP2006145886A (ja) | 2004-11-19 | 2006-06-08 | Sony Corp | 表示装置及びその制御方法 |
| KR101103889B1 (ko) | 2004-12-29 | 2012-01-12 | 엘지디스플레이 주식회사 | 액정표시장치와 그 구동방법 |
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-
2011
- 2011-08-23 JP JP2012530534A patent/JP5884060B2/ja active Active
- 2011-08-23 WO PCT/JP2011/004676 patent/WO2012026110A1/ja not_active Ceased
- 2011-08-23 EP EP15169535.0A patent/EP2945150A1/en not_active Ceased
- 2011-08-23 US US13/811,285 patent/US9124851B2/en active Active
- 2011-08-23 EP EP11819586.6A patent/EP2610850A4/en not_active Withdrawn
- 2011-08-23 CN CN201180039660.5A patent/CN103069478B/zh active Active
-
2015
- 2015-08-19 US US14/829,859 patent/US9659519B2/en active Active
- 2015-10-06 JP JP2015198640A patent/JP6136030B2/ja active Active
Also Published As
| Publication number | Publication date |
|---|---|
| EP2610850A1 (en) | 2013-07-03 |
| JP5884060B2 (ja) | 2016-03-15 |
| JP2016048377A (ja) | 2016-04-07 |
| WO2012026110A1 (ja) | 2012-03-01 |
| CN103069478B (zh) | 2016-04-27 |
| EP2610850A4 (en) | 2013-11-06 |
| EP2945150A1 (en) | 2015-11-18 |
| CN103069478A (zh) | 2013-04-24 |
| JPWO2012026110A1 (ja) | 2013-10-28 |
| US20130120660A1 (en) | 2013-05-16 |
| US9124851B2 (en) | 2015-09-01 |
| US20150364072A1 (en) | 2015-12-17 |
| US9659519B2 (en) | 2017-05-23 |
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