KR0170979B1 - 투사형 프로젝터의 투사각검출장치 - Google Patents
투사형 프로젝터의 투사각검출장치 Download PDFInfo
- Publication number
- KR0170979B1 KR0170979B1 KR1019950044557A KR19950044557A KR0170979B1 KR 0170979 B1 KR0170979 B1 KR 0170979B1 KR 1019950044557 A KR1019950044557 A KR 1019950044557A KR 19950044557 A KR19950044557 A KR 19950044557A KR 0170979 B1 KR0170979 B1 KR 0170979B1
- Authority
- KR
- South Korea
- Prior art keywords
- projection angle
- projection
- projector
- screen
- detecting
- Prior art date
Links
- 238000001514 detection method Methods 0.000 title claims abstract description 30
- 230000003287 optical effect Effects 0.000 claims description 7
- 230000005540 biological transmission Effects 0.000 claims description 6
- 238000003702 image correction Methods 0.000 claims 1
- 238000012545 processing Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 238000013500 data storage Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 230000004304 visual acuity Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/12—Picture reproducers
- H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
- H04N9/3179—Video signal processing therefor
- H04N9/3185—Geometric adjustment, e.g. keystone or convergence
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/132—Overhead projectors, i.e. capable of projecting hand-writing or drawing during action
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/145—Housing details, e.g. position adjustments thereof
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/74—Projection arrangements for image reproduction, e.g. using eidophor
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- General Physics & Mathematics (AREA)
- Geometry (AREA)
- Projection Apparatus (AREA)
- Transforming Electric Information Into Light Information (AREA)
Abstract
Description
Claims (3)
- 전면에 설치된 투사렌즈(12)에서 스크린상에 화상을 투사하는 투사형 프로젝터에 있어서, 그 프로젝터의 저면에 설치되는 투사각조절노브(14,16)에 형성된 나사형상부(20)에 치합되어 그 투사각조절노브(14,16)에 의해 조절되는 투사각의 검출을 위한 다수의 논리적 패턴이 형성된 투사각검출부재(24)와, 그 투사각검출부재(24)가 중간에 개재되어 상기 투사각조절노브(14,16)에 의해 회동하는 상기 투사각검출부재(24)의 논리적 패턴을 광검출하는 투사각조절검출수단(32), 상기 투사각조절검출수단(32)에 의해 검출되는 논리적 패턴을 기초로 상기 스크린상에 투사되는 화상의 상향/하향 보정량을 자동으로 설정하여 비대칭화면의 보정수단(44)에 의한 보정을 제어하는 제어수단(40)을 구비하여 구성된 것을 특징으로 하는 투사형 프로젝터의 투사각검출장치.
- 제1항에 있어서, 상기 투사각검출부재(24)는 상기 투사각조절노브(14,16)의 상반부에 형성되는 나사형상부(20)와 치합되어 회동하도록 주변에 기어치(26)가 형성되고 그 내부에는 투명한 베이스패널(28)상에 상기 스크린의 투사각조절에 대한 광검출을 위해 광전송로의 ON/OFF를 위한 다수의 논리패턴층(30a,30b)이 형성되어 구성된 것을 특징으로 하는 투사형 프로젝터의 투사각검출장치.
- 제1항에 있어서, 상기 투사각조절검출수단(32)은 상기 투사각검출부재(22)의 논리패턴층에 대응적으로 상호 대향 설치되어 상기 논리패턴층에 대한 광전송로의 ON/OFF에 기초하여 상기 프로젝터의 투사각검출을 위한 논리신호를 발생하는 다수의 발광소자(34a-34d)와 수광소자(36a-36d)로 구성된 것을 특징으로 하는 투사형 프로젝터의 투사각검출장치.
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019950044557A KR0170979B1 (ko) | 1995-11-29 | 1995-11-29 | 투사형 프로젝터의 투사각검출장치 |
US08/757,508 US5720539A (en) | 1995-11-29 | 1996-11-27 | Apparatus for detecting a projection angle in a projection system for displaying a picture |
EP96308674A EP0783132B1 (en) | 1995-11-29 | 1996-11-29 | Apparatus for detecting angle of inclination of an image projector with respect to its support plane |
DE69623431T DE69623431T2 (de) | 1995-11-29 | 1996-11-29 | Vorrichtung zum Ermitteln des Neigungswinkels eines Bild-Projektors in bezug auf seine Auflage-Ebene |
JP8333042A JP2875790B2 (ja) | 1995-11-29 | 1996-11-29 | 投射型画像表示システムでの投射角検出装置 |
CN96123094A CN1061438C (zh) | 1995-11-29 | 1996-11-29 | 用于检测显示图像的投影系统的投影角的装置 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019950044557A KR0170979B1 (ko) | 1995-11-29 | 1995-11-29 | 투사형 프로젝터의 투사각검출장치 |
Publications (2)
Publication Number | Publication Date |
---|---|
KR970032042A KR970032042A (ko) | 1997-06-26 |
KR0170979B1 true KR0170979B1 (ko) | 1999-03-20 |
Family
ID=19436303
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1019950044557A KR0170979B1 (ko) | 1995-11-29 | 1995-11-29 | 투사형 프로젝터의 투사각검출장치 |
Country Status (6)
Country | Link |
---|---|
US (1) | US5720539A (ko) |
EP (1) | EP0783132B1 (ko) |
JP (1) | JP2875790B2 (ko) |
KR (1) | KR0170979B1 (ko) |
CN (1) | CN1061438C (ko) |
DE (1) | DE69623431T2 (ko) |
Families Citing this family (22)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1998012601A1 (fr) * | 1996-09-19 | 1998-03-26 | Seiko Epson Corporation | Projecteur |
EP1118210A4 (en) * | 1998-10-02 | 2006-08-23 | Macronix Int Co Ltd | METHOD AND APPARATUS FOR PREVENTING TRAPEZE DISTORTION |
US6305805B1 (en) * | 1998-12-17 | 2001-10-23 | Gateway, Inc. | System, method and software for correcting keystoning of a projected image |
US6481855B2 (en) * | 2001-01-12 | 2002-11-19 | Infocus Corporation | Keystone distortion correction system for use in multimedia projectors |
TW456529U (en) * | 2001-02-19 | 2001-09-21 | Coretronic Corp | Device for adjusting the height of flat-type projector |
TWI229234B (en) * | 2002-06-10 | 2005-03-11 | Sony Corp | Image projector |
US7380946B1 (en) | 2003-01-28 | 2008-06-03 | Pixelworks, Inc. | Semiautomatic keystone correction system and method |
US6685149B1 (en) * | 2003-04-15 | 2004-02-03 | Benq Corporation | Adjustable support stand |
TW580607B (en) * | 2003-07-04 | 2004-03-21 | Benq Corp | Projecting device with a keystone correction function |
CN100365505C (zh) * | 2003-07-17 | 2008-01-30 | 明基电通股份有限公司 | 具有梯形校正功能的投影装置 |
JP4131214B2 (ja) * | 2003-08-08 | 2008-08-13 | カシオ計算機株式会社 | 傾斜角度検出装置及び傾斜角度検出方法 |
US6997563B1 (en) * | 2004-05-19 | 2006-02-14 | Pixelworks, Inc. | Keystone correction derived from the parameters of projectors |
US7252387B2 (en) * | 2005-03-21 | 2007-08-07 | Mitsubishi Electric Research Laboratories, Inc. | System and method for mechanically adjusting projector pose with six degrees of freedom for image alignment |
US8044880B2 (en) * | 2005-04-28 | 2011-10-25 | Hitachi, Ltd. | Projection type image display device |
US7441906B1 (en) | 2005-07-05 | 2008-10-28 | Pixelworks, Inc. | Keystone correction system and method |
JP4241797B2 (ja) * | 2006-09-29 | 2009-03-18 | セイコーエプソン株式会社 | プロジェクタおよびプロジェクタの台形歪み補正方法 |
JP5499624B2 (ja) * | 2009-10-23 | 2014-05-21 | セイコーエプソン株式会社 | プロジェクター |
CN102414614B (zh) * | 2010-03-09 | 2014-10-08 | 松下电器产业株式会社 | 投影仪 |
CN102193282B (zh) * | 2010-03-12 | 2012-08-29 | 鸿富锦精密工业(深圳)有限公司 | 投影仪 |
CN102183870A (zh) * | 2011-04-29 | 2011-09-14 | 广州视声电子科技有限公司 | 一种投影机图像畸变校正方法及其系统、一种投影机 |
CN107504331B (zh) * | 2017-08-21 | 2019-06-25 | 合肥惠科金扬科技有限公司 | 一种新型显示屏支撑架 |
CN107588749A (zh) * | 2017-09-08 | 2018-01-16 | 航天科工哈尔滨风华有限公司 | 一种燃油调节器角位移调零装置及其调零方法 |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5642225A (en) * | 1979-09-14 | 1981-04-20 | Fuji Xerox Co Ltd | Original for oblique projection and its making device |
DE3223272A1 (de) * | 1982-06-22 | 1983-12-22 | Siemens AG, 1000 Berlin und 8000 München | Monolithische lichtschranke |
US4695693A (en) * | 1986-10-02 | 1987-09-22 | General Electric Company | Triangular antenna array for microwave oven |
JPH0395538A (ja) * | 1989-09-07 | 1991-04-19 | Ricoh Co Ltd | 投影機 |
JPH0451128A (ja) * | 1990-06-19 | 1992-02-19 | Sony Corp | 投射型映像表示装置 |
JP2925777B2 (ja) * | 1991-04-23 | 1999-07-28 | 三洋電機株式会社 | 液晶プロジェクタの歪み補正回路 |
US5537168A (en) * | 1991-04-26 | 1996-07-16 | Canon Kabushiki Kaisha | Projection optical apparatus comprising automatic adjustment unit |
KR950014687A (ko) * | 1993-11-13 | 1995-06-16 | 이헌조 | 전자레인지 |
KR0142783B1 (ko) * | 1994-03-19 | 1998-07-15 | 구자홍 | 프로젝터의 경사면 투사시 화상보정장치 및 방법 |
US5557353A (en) * | 1994-04-22 | 1996-09-17 | Stahl; Thomas D. | Pixel compensated electro-optical display system |
JPH089306A (ja) * | 1994-06-20 | 1996-01-12 | Fujitsu General Ltd | 投写型画像表示装置 |
US5548357A (en) * | 1995-06-06 | 1996-08-20 | Xerox Corporation | Keystoning and focus correction for an overhead projector |
-
1995
- 1995-11-29 KR KR1019950044557A patent/KR0170979B1/ko not_active IP Right Cessation
-
1996
- 1996-11-27 US US08/757,508 patent/US5720539A/en not_active Expired - Fee Related
- 1996-11-29 DE DE69623431T patent/DE69623431T2/de not_active Expired - Fee Related
- 1996-11-29 CN CN96123094A patent/CN1061438C/zh not_active Expired - Fee Related
- 1996-11-29 EP EP96308674A patent/EP0783132B1/en not_active Expired - Lifetime
- 1996-11-29 JP JP8333042A patent/JP2875790B2/ja not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
EP0783132A1 (en) | 1997-07-09 |
JP2875790B2 (ja) | 1999-03-31 |
EP0783132B1 (en) | 2002-09-04 |
US5720539A (en) | 1998-02-24 |
CN1061438C (zh) | 2001-01-31 |
DE69623431T2 (de) | 2003-05-22 |
KR970032042A (ko) | 1997-06-26 |
DE69623431D1 (de) | 2002-10-10 |
JPH09311380A (ja) | 1997-12-02 |
CN1159569A (zh) | 1997-09-17 |
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