JP4982510B2 - 映像表示装置 - Google Patents
映像表示装置 Download PDFInfo
- Publication number
- JP4982510B2 JP4982510B2 JP2009012485A JP2009012485A JP4982510B2 JP 4982510 B2 JP4982510 B2 JP 4982510B2 JP 2009012485 A JP2009012485 A JP 2009012485A JP 2009012485 A JP2009012485 A JP 2009012485A JP 4982510 B2 JP4982510 B2 JP 4982510B2
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- JP
- Japan
- Prior art keywords
- shading
- luminance level
- average luminance
- region
- gain coefficient
- 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.)
- Expired - Fee Related
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/63—Generation or supply of power specially adapted for television receivers
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- 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
- G09G3/2007—Display of intermediate tones
-
- 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
- G09G3/22—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 using controlled light sources
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2310/00—Command of the display device
- G09G2310/02—Addressing, scanning or driving the display screen or processing steps related thereto
- G09G2310/0232—Special driving of display border areas
-
- 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
-
- 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
- G09G3/2003—Display of colours
-
- 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
- G09G3/22—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 using controlled light sources
- G09G3/28—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 using controlled light sources using luminous gas-discharge panels, e.g. plasma panels
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Control Of Gas Discharge Display Tubes (AREA)
- Transforming Electric Information Into Light Information (AREA)
Description
これは表示パネル全体の平均輝度レベルを検出し、その平均輝度レベルに応じてシェーディング処理動作を制御することにより、明るい映像(高輝度映像)を表示する場合は、シェーディング処理回路を動作させ、消費電力の増加を抑え、暗い映像(低輝度映像)が入力されてきた場合には、シェーディング処理動作を停止させ、画質劣化(階調潰れ)を防ぐものである。
Claims (3)
- 入力画像信号の輝度レベルに対し、表示パネル上周辺部の表示輝度レベルを低下させるシェーディング処理を行う映像表示装置であって、
前記表示パネルの表示領域を水平方向と垂直方向の双方に複数に分割して領域毎の平均輝度レベルを検出する領域別平均輝度レベル検出回路と、
前記領域別平均輝度レベル検出回路によって検出された前記領域毎の平均輝度レベルに応じて、表示する画像信号の前記表示パネル上の輝度レベルを低下させる割合であるシェーディングゲイン係数を変化させるシェーディング処理回路とを備え、
前記領域毎の平均輝度レベルは、前記領域内の画素を構成する色毎の平均輝度レベルのうち最大値を当該領域の平均輝度レベルとするものであって、
前記シェーディング処理回路は、前記領域毎の平均輝度レベルが所定の閾値以下の領域では、前記シェーディングゲイン係数を1として前記シェーディング処理を停止させ、前記領域毎の平均輝度レベルが前記所定の閾値より大きい場合には、大きくなるに従って前記シェーディングゲイン係数を徐々に小さくすると共に、
前記領域の四隅の画素に対応する基準画素のシェーディングゲイン係数を、当該基準画素を含む前記領域における前記領域毎の平均輝度レベルに応じた前記シェーディングゲイン係数を平均化することにより算出し、
前記領域に含まれる前記基準画素以外の各画素のシェーディングゲイン係数を、複数の前記基準画素の前記シェーディングゲイン係数に基づく補間処理により算出することを特徴とする映像表示装置。 - 請求項1に記載の映像表示装置であって、
前記領域に含まれる前記基準画素以外の各画素の前記シェーディングゲイン係数は、複数の前記基準画素の前記シェーディングゲイン係数を線形補間処理により算出されることを特徴とする映像表示装置。 - 請求項1乃至請求項2の何れか一項に記載の映像表示装置であって、
前記領域内の画素を構成する色毎の平均輝度レベルを平均化した値を前記領域毎の第2の平均輝度レベルとし、
前記シェーディング処理回路は、前記第2の平均輝度レベルが前記所定の閾値よりも小さい第2の閾値よりも大きくなる前記領域では、前記シェーディングゲイン係数を1とはせずに前記シェーディング処理を実施させることを特徴とする映像表示装置。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2009012485A JP4982510B2 (ja) | 2009-01-23 | 2009-01-23 | 映像表示装置 |
US12/691,546 US20100207955A1 (en) | 2009-01-23 | 2010-01-21 | Video display apparatus |
CN201010100082A CN101789211A (zh) | 2009-01-23 | 2010-01-22 | 影像显示装置 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2009012485A JP4982510B2 (ja) | 2009-01-23 | 2009-01-23 | 映像表示装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2010169902A JP2010169902A (ja) | 2010-08-05 |
JP4982510B2 true JP4982510B2 (ja) | 2012-07-25 |
Family
ID=42532410
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2009012485A Expired - Fee Related JP4982510B2 (ja) | 2009-01-23 | 2009-01-23 | 映像表示装置 |
Country Status (3)
Country | Link |
---|---|
US (1) | US20100207955A1 (ja) |
JP (1) | JP4982510B2 (ja) |
CN (1) | CN101789211A (ja) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP6061491B2 (ja) * | 2012-05-16 | 2017-01-18 | 株式会社オリンピア | 遊技機 |
CN104050925B (zh) * | 2014-06-27 | 2017-01-11 | 深圳市奥拓电子股份有限公司 | 一种led显示屏显示方法、装置及led显示屏 |
MX2019008379A (es) * | 2014-08-19 | 2019-09-09 | Panasonic Ip Man Co Ltd | Metodo de transmision, metodo de reproduccion y dispositivo de reproduccion. |
GB2549696A (en) * | 2016-04-13 | 2017-11-01 | Sony Corp | Image processing method and apparatus, integrated circuitry and recording medium |
CN106991959B (zh) * | 2017-01-25 | 2020-08-04 | 杭州视芯科技有限公司 | 用于led显示屏的图像处理方法及装置 |
KR102609852B1 (ko) * | 2019-01-16 | 2023-12-06 | 삼성디스플레이 주식회사 | 표시 장치 및 표시 시스템 |
CN113593477A (zh) * | 2021-08-03 | 2021-11-02 | 深圳市华星光电半导体显示技术有限公司 | 显示装置及其驱动方法 |
Family Cites Families (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3025251B2 (ja) * | 1997-12-27 | 2000-03-27 | キヤノン株式会社 | 画像表示装置及び画像表示装置の駆動方法 |
JP4063418B2 (ja) * | 1998-09-11 | 2008-03-19 | イーストマン コダック カンパニー | オートホワイトバランス装置 |
US6791566B1 (en) * | 1999-09-17 | 2004-09-14 | Matsushita Electric Industrial Co., Ltd. | Image display device |
JP2002072951A (ja) * | 2000-09-01 | 2002-03-12 | Matsushita Electric Ind Co Ltd | 表示装置およびその駆動方法 |
JP2002108276A (ja) * | 2000-10-02 | 2002-04-10 | Sanyo Electric Co Ltd | プラズマディスプレイ装置 |
JP2002116728A (ja) * | 2000-10-10 | 2002-04-19 | Matsushita Electric Ind Co Ltd | 表示装置 |
KR100712471B1 (ko) * | 2000-11-09 | 2007-04-27 | 엘지.필립스 엘시디 주식회사 | 시분할 방식 액정표시장치 및 그의 컬러영상표시방법 |
FR2817986B1 (fr) * | 2000-12-07 | 2003-03-28 | Lyon Ecole Centrale | Procede de classification d'une image en couleur selon la prise de vue en exterieur ou en interieur |
JP4228588B2 (ja) * | 2002-05-27 | 2009-02-25 | パナソニック株式会社 | プラズマディスプレイ装置 |
JP4118749B2 (ja) * | 2002-09-05 | 2008-07-16 | 株式会社リコー | 画像処理装置、画像処理プログラムおよび記憶媒体 |
JP3885750B2 (ja) * | 2003-03-19 | 2007-02-28 | セイコーエプソン株式会社 | 異なった特徴の画像が混在する画像を表す画像信号の階調特性制御 |
JP4272566B2 (ja) * | 2004-03-19 | 2009-06-03 | 富士フイルム株式会社 | 広ダイナミックレンジ固体撮像素子の色シェーディング補正方法および固体撮像装置 |
JP2005315956A (ja) * | 2004-04-27 | 2005-11-10 | Pioneer Electronic Corp | 表示器駆動装置及び駆動方法 |
JP2005321664A (ja) * | 2004-05-11 | 2005-11-17 | Hitachi Ltd | 映像表示装置 |
US8090198B2 (en) * | 2005-03-25 | 2012-01-03 | Mitsubishi Electric Corporation | Image processing apparatus, image display apparatus, and image display method |
JP2008158399A (ja) * | 2006-12-26 | 2008-07-10 | Sony Corp | 消費電力削減装置、自発光表示装置、電子機器、消費電力削減方法及びコンピュータプログラム |
US8073248B2 (en) * | 2007-06-08 | 2011-12-06 | Apple Inc. | Automatic detection of calibration charts in images |
-
2009
- 2009-01-23 JP JP2009012485A patent/JP4982510B2/ja not_active Expired - Fee Related
-
2010
- 2010-01-21 US US12/691,546 patent/US20100207955A1/en not_active Abandoned
- 2010-01-22 CN CN201010100082A patent/CN101789211A/zh active Pending
Also Published As
Publication number | Publication date |
---|---|
US20100207955A1 (en) | 2010-08-19 |
CN101789211A (zh) | 2010-07-28 |
JP2010169902A (ja) | 2010-08-05 |
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