WO2008139542A1 - 画像表示装置及び該画像表示装置に用いられる画像変換方法 - Google Patents

画像表示装置及び該画像表示装置に用いられる画像変換方法 Download PDF

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Publication number
WO2008139542A1
WO2008139542A1 PCT/JP2007/059269 JP2007059269W WO2008139542A1 WO 2008139542 A1 WO2008139542 A1 WO 2008139542A1 JP 2007059269 W JP2007059269 W JP 2007059269W WO 2008139542 A1 WO2008139542 A1 WO 2008139542A1
Authority
WO
WIPO (PCT)
Prior art keywords
image
aspect ratio
pixel
masks
time constant
Prior art date
Application number
PCT/JP2007/059269
Other languages
English (en)
French (fr)
Inventor
Kazunori Ochiai
Hideaki Yokota
Takahiro Oki
Original Assignee
Pioneer Corporation
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 Pioneer Corporation filed Critical Pioneer Corporation
Priority to PCT/JP2007/059269 priority Critical patent/WO2008139542A1/ja
Priority to JP2009513885A priority patent/JPWO2008139542A1/ja
Publication of WO2008139542A1 publication Critical patent/WO2008139542A1/ja

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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
    • G09G3/22—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
    • G09G3/288—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 using AC panels
    • 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
    • G09G3/2803—Display of gradations
    • 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
    • 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
    • G09G2320/0238—Improving the black level
    • 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
    • G09G2320/0257—Reduction of after-image effects
    • 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
    • G09G2320/04—Maintaining the quality of display appearance
    • G09G2320/043—Preventing or counteracting the effects of ageing
    • G09G2320/046—Dealing with screen burn-in prevention or compensation of the effects thereof
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2340/00—Aspects of display data processing
    • G09G2340/04—Changes in size, position or resolution of an image
    • G09G2340/0442—Handling or displaying different aspect ratios, or changing the aspect ratio
    • 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
    • G09G2360/02—Graphics controller able to handle multiple formats, e.g. input or output formats

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Power Engineering (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Control Of Gas Discharge Display Tubes (AREA)
  • Television Systems (AREA)
  • Transforming Electric Information Into Light Information (AREA)

Abstract

　アスペクト比が４：３の画像の左右に付加される左右サイドマスクを正確に検出し、同画像をアスペクト比が１６：９の画像に拡大して表示するプラズマ表示装置を提供することを課題とする。 左右サイドマスク検出部（１）により、第１サイズの画像と各サイドマスクとの各境界部分及び近辺の所定の領域について、入力映像信号（ｖｉ）の１の画素の輝度信号レベルと同１の画素の水平方向の一方に隣接する画素の輝度信号レベルとの差分絶対値が算出され、同各差分絶対値が同入力映像信号（ｖｉ）の垂直方向に累積され、累積結果に基づいて第１サイズの画像及び各サイドマスクの有無が検出される。また、左右サイドマスク検出時定数処理部（３）で、左右サイドマスク検出部（１）からの画像検出信号（ｖｄ）が時定数処理されるので、サイドマスクが正確に検出され、不必要にアスペクト比が変化せず、ＰＤＰ（５）の残像が防止される。
PCT/JP2007/059269 2007-04-27 2007-04-27 画像表示装置及び該画像表示装置に用いられる画像変換方法 WO2008139542A1 (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/JP2007/059269 WO2008139542A1 (ja) 2007-04-27 2007-04-27 画像表示装置及び該画像表示装置に用いられる画像変換方法
JP2009513885A JPWO2008139542A1 (ja) 2007-04-27 2007-04-27 画像表示装置及び該画像表示装置に用いられる画像変換方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2007/059269 WO2008139542A1 (ja) 2007-04-27 2007-04-27 画像表示装置及び該画像表示装置に用いられる画像変換方法

Publications (1)

Publication Number Publication Date
WO2008139542A1 true WO2008139542A1 (ja) 2008-11-20

Family

ID=40001778

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2007/059269 WO2008139542A1 (ja) 2007-04-27 2007-04-27 画像表示装置及び該画像表示装置に用いられる画像変換方法

Country Status (2)

Country Link
JP (1) JPWO2008139542A1 (ja)
WO (1) WO2008139542A1 (ja)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05161089A (ja) * 1991-12-06 1993-06-25 Sanyo Electric Co Ltd 画像検出回路
JPH05328160A (ja) * 1992-05-27 1993-12-10 Victor Co Of Japan Ltd 映像表示サイズ自動切換装置
JPH07162751A (ja) * 1993-10-14 1995-06-23 Hitachi Ltd 画像の特徴検出装置、画像調整システム、字幕編集システムおよびテレビジョン受像機
JPH07264440A (ja) * 1994-03-18 1995-10-13 Sharp Corp 映像信号処理回路
JPH08237569A (ja) * 1994-12-08 1996-09-13 Matsushita Electric Ind Co Ltd 平均輝度レベル検出装置とそれを用いたテレビジョン信号のアスペクト比自動識別装置

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006287506A (ja) * 2005-03-31 2006-10-19 Fujitsu General Ltd Ｈｄｔｖ表示装置

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05161089A (ja) * 1991-12-06 1993-06-25 Sanyo Electric Co Ltd 画像検出回路
JPH05328160A (ja) * 1992-05-27 1993-12-10 Victor Co Of Japan Ltd 映像表示サイズ自動切換装置
JPH07162751A (ja) * 1993-10-14 1995-06-23 Hitachi Ltd 画像の特徴検出装置、画像調整システム、字幕編集システムおよびテレビジョン受像機
JPH07264440A (ja) * 1994-03-18 1995-10-13 Sharp Corp 映像信号処理回路
JPH08237569A (ja) * 1994-12-08 1996-09-13 Matsushita Electric Ind Co Ltd 平均輝度レベル検出装置とそれを用いたテレビジョン信号のアスペクト比自動識別装置

Also Published As

Publication number Publication date
JPWO2008139542A1 (ja) 2010-07-29

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