CA2226470C - Circuit for convergence setting in a projection television set - Google Patents
Circuit for convergence setting in a projection television set Download PDFInfo
- Publication number
- CA2226470C CA2226470C CA002226470A CA2226470A CA2226470C CA 2226470 C CA2226470 C CA 2226470C CA 002226470 A CA002226470 A CA 002226470A CA 2226470 A CA2226470 A CA 2226470A CA 2226470 C CA2226470 C CA 2226470C
- Authority
- CA
- Canada
- Prior art keywords
- output signal
- circuit
- photosensor
- sensor
- marker
- 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
Links
- 239000003550 marker Substances 0.000 claims abstract description 29
- 230000008878 coupling Effects 0.000 claims description 3
- 238000010168 coupling process Methods 0.000 claims description 3
- 238000005859 coupling reaction Methods 0.000 claims description 3
- 238000005286 illumination Methods 0.000 claims description 2
- 239000003086 colorant Substances 0.000 abstract description 14
- 238000011156 evaluation Methods 0.000 abstract description 13
- 238000012937 correction Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000005070 sampling Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000010354 integration Effects 0.000 description 2
- 230000001960 triggered effect Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000015654 memory Effects 0.000 description 1
- 230000002688 persistence Effects 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 238000010408 sweeping Methods 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
- H04N9/16—Picture reproducers using cathode ray tubes
- H04N9/28—Arrangements for convergence or focusing
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Video Image Reproduction Devices For Color Tv Systems (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19702452A DE19702452A1 (de) | 1997-01-24 | 1997-01-24 | Schaltung zur Einstellung der Konvergenz bei einem Projektionsfernsehgerät |
| DE19702452.1 | 1997-01-24 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2226470A1 CA2226470A1 (en) | 1998-07-24 |
| CA2226470C true CA2226470C (en) | 2006-07-11 |
Family
ID=7818233
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002226470A Expired - Fee Related CA2226470C (en) | 1997-01-24 | 1998-01-07 | Circuit for convergence setting in a projection television set |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP0855841A3 (enExample) |
| JP (1) | JPH10224813A (enExample) |
| KR (1) | KR100509105B1 (enExample) |
| CN (1) | CN1112052C (enExample) |
| CA (1) | CA2226470C (enExample) |
| DE (1) | DE19702452A1 (enExample) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19835803A1 (de) * | 1998-08-07 | 2000-02-10 | Thomson Brandt Gmbh | Verfahren zur Konvergenzkorrektur in einem Fernsehgerät |
| WO2001039510A1 (en) * | 1999-11-22 | 2001-05-31 | Thomson Licensing S.A. | Automated convergence in a projection display apparatus |
| JP7036133B2 (ja) * | 2020-02-20 | 2022-03-15 | セイコーエプソン株式会社 | プロジェクションシステム、プロジェクターの制御方法およびプロジェクター |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3311971A1 (de) * | 1983-03-31 | 1984-10-04 | Siemens AG, 1000 Berlin und 8000 München | Einrichtung zum ausrichten von videoprojektionen |
| US4720190A (en) * | 1985-12-05 | 1988-01-19 | Dupree, Inc. | Lamp analyzer |
| GB8608925D0 (en) * | 1986-04-11 | 1986-05-14 | Philips Nv | Projection television system |
| JPS63180828A (ja) * | 1987-01-22 | 1988-07-25 | Agency Of Ind Science & Technol | 高速処理化カラ−センサ |
| US4884890A (en) * | 1988-02-25 | 1989-12-05 | Nanometrics Incorporated | Method for normalizing the detection signals of magnified images of fluorescing materials |
| JPH02194789A (ja) * | 1989-01-23 | 1990-08-01 | Toshiba Corp | 投写形画像表示装置のコンバーゼンス補正装置 |
| DE3936789A1 (de) * | 1989-11-04 | 1991-05-08 | Thomson Brandt Gmbh | Projektions-fernsehgeraet |
| JPH05191817A (ja) * | 1992-01-13 | 1993-07-30 | Toshiba Corp | 投写型テレビジョン受像機の自動コンバーゼンス補正回路 |
| JPH06165224A (ja) * | 1992-11-24 | 1994-06-10 | Sanyo Electric Co Ltd | コンバージェンスずれ検出装置及び検出方法 |
| US5340975A (en) * | 1993-01-29 | 1994-08-23 | Minnesota Mining And Manufacturing Company | Method and apparatus for reducing the effects of laser noise and for improving modulation transfer function in scanning a photoconductive surface |
| JP3409899B2 (ja) * | 1993-12-13 | 2003-05-26 | 三菱電機株式会社 | 投写型表示装置および投写画像改善方法 |
| JPH08149522A (ja) * | 1994-09-20 | 1996-06-07 | Matsushita Electric Ind Co Ltd | 位置検出装置及び画像補正装置 |
| JPH08182013A (ja) * | 1994-12-27 | 1996-07-12 | Hitachi Ltd | デジタルコンバーゼンス自動調整装置 |
| JPH08317431A (ja) * | 1995-05-23 | 1996-11-29 | Matsushita Electric Ind Co Ltd | 信号発生装置及び位置検出装置及び画像補正装置 |
-
1997
- 1997-01-24 DE DE19702452A patent/DE19702452A1/de not_active Withdrawn
-
1998
- 1998-01-07 CA CA002226470A patent/CA2226470C/en not_active Expired - Fee Related
- 1998-01-10 EP EP98100337A patent/EP0855841A3/en not_active Withdrawn
- 1998-01-21 CN CN98104020A patent/CN1112052C/zh not_active Expired - Fee Related
- 1998-01-22 JP JP10010651A patent/JPH10224813A/ja not_active Withdrawn
- 1998-01-23 KR KR10-1998-0002114A patent/KR100509105B1/ko not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1191450A (zh) | 1998-08-26 |
| CA2226470A1 (en) | 1998-07-24 |
| KR19980070793A (ko) | 1998-10-26 |
| CN1112052C (zh) | 2003-06-18 |
| EP0855841A2 (en) | 1998-07-29 |
| EP0855841A3 (en) | 2002-07-24 |
| KR100509105B1 (ko) | 2005-11-16 |
| JPH10224813A (ja) | 1998-08-21 |
| DE19702452A1 (de) | 1998-07-30 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |
Effective date: 20130107 |