KR100565691B1 - 영상기기의 오차확산 제어장치 및 방법 - Google Patents
영상기기의 오차확산 제어장치 및 방법 Download PDFInfo
- Publication number
- KR100565691B1 KR100565691B1 KR1020040073017A KR20040073017A KR100565691B1 KR 100565691 B1 KR100565691 B1 KR 100565691B1 KR 1020040073017 A KR1020040073017 A KR 1020040073017A KR 20040073017 A KR20040073017 A KR 20040073017A KR 100565691 B1 KR100565691 B1 KR 100565691B1
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- KR
- South Korea
- Prior art keywords
- error diffusion
- image data
- black
- screen display
- ratio
- 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.)
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- 238000009792 diffusion process Methods 0.000 title claims abstract description 57
- 238000000034 method Methods 0.000 title claims abstract description 21
- 238000012545 processing Methods 0.000 claims abstract description 17
- 230000006870 function Effects 0.000 claims description 7
- 238000003384 imaging method Methods 0.000 abstract description 9
- 230000000694 effects Effects 0.000 abstract description 2
- 238000013507 mapping Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 3
- 238000012937 correction Methods 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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Classifications
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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
- G09G3/22—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
- G09G3/296—Driving circuits for producing the waveforms applied to the driving electrodes
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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
- G09G3/2059—Display of intermediate tones using error diffusion
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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
- G09G2360/00—Aspects of the architecture of display systems
- G09G2360/16—Calculation or use of calculated indices related to luminance levels in display data
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Power Engineering (AREA)
- Plasma & Fusion (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Processing Of Color Television Signals (AREA)
- Picture Signal Circuits (AREA)
Abstract
Description
Claims (7)
- 입력된 영상데이터의 계조 오차를 보정하기 위한 오차확산 처리부;상기 오차확산 처리부에서 출력된 영상데이터를 화면표시 단위로 저장하는 프레임 메모리; 그리고상기 메모리에 저장된 화면표시 단위 영상데이터중 블랙(Black) 영상데이터의 비율에 따라 상기 오차확산 처리부의 동작을 중지시키는 제어부를 포함하여 구성되는 것을 특징으로 하는 영상기기의 오차확산 제어장치.
- 제 1 항에 있어서,상기 제어부는 영상데이터중 블랙 영상데이터를 판별하기 위한 블랙신호 판별부를 포함하는 것을 특징으로 하는 영상기기의 오차확산 제어장치.
- 오차확산 기능을 구비한 영상기기에 있어서,영상기기에 입력된 화면표시 단위의 영상데이터중 블랙(Black) 영상데이터의 비율을 산출하는 단계;상기 산출된 비율에 따라 오차확산 기능의 동작여부를 결정하는 단계를 포함하는 영상기기의 오차확산 제어방법.
- 제 3 항에 있어서,상기 화면표시 단위는 프레임(Frame) 단위인 것을 특징으로 하는 영상기기의 오차확산 제어방법.
- 제 3 항에 있어서,상기 블랙 영상데이터는 계조가 "0 ~ 10"에 해당하는 영상데이터임을 특징으로 하는 영상기기의 오차확산 제어방법.
- 제 3 항에 있어서,상기 산출된 비율에 따라 오차확산 기능의 동작여부를 결정하는 단계는산출된 비율이 기설정값 이상이면 오차확산 기능을 중지시키는 단계와,산출된 비율이 기설정값 미만이면 오차확산 기능을 정상적으로 동작시키는 단계를 포함함을 특징으로 하는 영상기기의 오차확산 제어방법.
- 제 6 항에 있어서,상기 기설정값은 화면표시 단위의 영상데이터중 블랙(Black) 영상데이터의 비율로서 60% 내지 70% 중 어느 하나임을 특징으로 하는 영상기기의 오차확산 제어방법.
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020040073017A KR100565691B1 (ko) | 2004-09-13 | 2004-09-13 | 영상기기의 오차확산 제어장치 및 방법 |
US11/180,599 US20060055979A1 (en) | 2004-09-13 | 2005-07-14 | Error diffusion control device and method for video apparatus |
EP05015531A EP1635314A3 (en) | 2004-09-13 | 2005-07-18 | Error diffusion control device and method for video apparatus |
AU2005203657A AU2005203657B2 (en) | 2004-09-13 | 2005-08-16 | Error diffusion control device and method for video apparatus |
CNB2005100998697A CN100499740C (zh) | 2004-09-13 | 2005-09-08 | 用于视频装置的误差扩散控制设备及方法 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020040073017A KR100565691B1 (ko) | 2004-09-13 | 2004-09-13 | 영상기기의 오차확산 제어장치 및 방법 |
Publications (2)
Publication Number | Publication Date |
---|---|
KR20060024136A KR20060024136A (ko) | 2006-03-16 |
KR100565691B1 true KR100565691B1 (ko) | 2006-03-29 |
Family
ID=36120168
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1020040073017A Expired - Fee Related KR100565691B1 (ko) | 2004-09-13 | 2004-09-13 | 영상기기의 오차확산 제어장치 및 방법 |
Country Status (5)
Country | Link |
---|---|
US (1) | US20060055979A1 (ko) |
EP (1) | EP1635314A3 (ko) |
KR (1) | KR100565691B1 (ko) |
CN (1) | CN100499740C (ko) |
AU (1) | AU2005203657B2 (ko) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100834680B1 (ko) * | 2006-09-18 | 2008-06-02 | 삼성전자주식회사 | 이동통신 단말기에서 출력되는 동영상 및 이미지의 화질을개선하기 위한 장치 및 방법 |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5014333A (en) * | 1988-07-21 | 1991-05-07 | Eastman Kodak Company | Image processor with smooth transitioning between dither and diffusion processes |
JP3521592B2 (ja) * | 1995-12-25 | 2004-04-19 | 株式会社富士通ゼネラル | ディスプレイ装置の誤差拡散処理装置 |
JP3521591B2 (ja) * | 1995-12-25 | 2004-04-19 | 株式会社富士通ゼネラル | ディスプレイ装置の誤差拡散処理装置 |
JPH09185340A (ja) | 1995-12-27 | 1997-07-15 | Fujitsu General Ltd | ディスプレイ装置 |
EP0913994B1 (en) | 1997-10-28 | 2010-12-15 | Thomson Licensing | Method and apparatus for automatic format detection in digital video pictures |
US6965389B1 (en) * | 1999-09-08 | 2005-11-15 | Victor Company Of Japan, Ltd. | Image displaying with multi-gradation processing |
JP3741416B2 (ja) | 2000-04-11 | 2006-02-01 | パイオニア株式会社 | ディスプレイパネルの駆動方法 |
KR100438918B1 (ko) * | 2001-12-08 | 2004-07-03 | 엘지전자 주식회사 | 플라즈마 디스플레이 패널의 구동방법 및 장치 |
US6894666B2 (en) * | 2001-12-12 | 2005-05-17 | Samsung Sdi Co., Ltd. | Contrast correcting circuit |
KR100508937B1 (ko) * | 2003-08-05 | 2005-08-17 | 삼성에스디아이 주식회사 | 고효율 플라즈마 디스플레이 패널에서의 계조 표현 방법및 그 방법을 사용한 플라즈마 디스플레이 패널 구동 장치 |
-
2004
- 2004-09-13 KR KR1020040073017A patent/KR100565691B1/ko not_active Expired - Fee Related
-
2005
- 2005-07-14 US US11/180,599 patent/US20060055979A1/en not_active Abandoned
- 2005-07-18 EP EP05015531A patent/EP1635314A3/en not_active Ceased
- 2005-08-16 AU AU2005203657A patent/AU2005203657B2/en not_active Ceased
- 2005-09-08 CN CNB2005100998697A patent/CN100499740C/zh not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
KR20060024136A (ko) | 2006-03-16 |
EP1635314A2 (en) | 2006-03-15 |
CN1758711A (zh) | 2006-04-12 |
AU2005203657A1 (en) | 2006-03-30 |
EP1635314A3 (en) | 2009-04-29 |
CN100499740C (zh) | 2009-06-10 |
AU2005203657B2 (en) | 2006-11-23 |
US20060055979A1 (en) | 2006-03-16 |
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