CA1280832C - Focus block for a three-tube color video projector - Google Patents
Focus block for a three-tube color video projectorInfo
- Publication number
- CA1280832C CA1280832C CA000537059A CA537059A CA1280832C CA 1280832 C CA1280832 C CA 1280832C CA 000537059 A CA000537059 A CA 000537059A CA 537059 A CA537059 A CA 537059A CA 1280832 C CA1280832 C CA 1280832C
- Authority
- CA
- Canada
- Prior art keywords
- focus
- brightness
- adjusting
- red
- resistor
- 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 - Lifetime
Links
- 239000003086 colorant Substances 0.000 claims description 9
- 239000003990 capacitor Substances 0.000 claims description 4
- 230000001105 regulatory effect Effects 0.000 claims description 2
- 230000001276 controlling effect Effects 0.000 claims 5
- 235000001537 Ribes X gardonianum Nutrition 0.000 claims 1
- 235000001535 Ribes X utile Nutrition 0.000 claims 1
- 235000016919 Ribes petraeum Nutrition 0.000 claims 1
- 244000281247 Ribes rubrum Species 0.000 claims 1
- 235000002355 Ribes spicatum Nutrition 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 6
- 239000003795 chemical substances by application Substances 0.000 description 2
- 241000272470 Circus Species 0.000 description 1
- 241000518994 Conta Species 0.000 description 1
- YVPYQUNUQOZFHG-UHFFFAOYSA-N amidotrizoic acid Chemical compound CC(=O)NC1=C(I)C(NC(C)=O)=C(I)C(C(O)=O)=C1I YVPYQUNUQOZFHG-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 230000007775 late Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification 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
-
- 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]
-
- 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
- H04N9/18—Picture reproducers using cathode ray tubes using separate electron beams for the primary colour signals
- H04N9/20—Picture reproducers using cathode ray tubes using separate electron beams for the primary colour signals with more than one beam in a tube
-
- 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]
- H04N9/3141—Constructional details thereof
- H04N9/317—Convergence or focusing systems
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Video Image Reproduction Devices For Color Tv Systems (AREA)
- Details Of Television Scanning (AREA)
- Transforming Electric Information Into Light Information (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1986072534U JPH0516765Y2 (US07534539-20090519-C00280.png) | 1986-05-14 | 1986-05-14 | |
JP072534/86 | 1986-05-14 |
Publications (1)
Publication Number | Publication Date |
---|---|
CA1280832C true CA1280832C (en) | 1991-02-26 |
Family
ID=13492109
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA000537059A Expired - Lifetime CA1280832C (en) | 1986-05-14 | 1987-05-13 | Focus block for a three-tube color video projector |
Country Status (4)
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE68915994T2 (de) * | 1989-01-19 | 1994-10-13 | Matsushita Electric Ind Co Ltd | Umschaltkreis zur Fokussierungsregelung für Projektionsfernsehempfänger. |
US6377317B1 (en) * | 1999-04-08 | 2002-04-23 | Sony Corporation | Method and apparatus for correcting color component focusing in a rear-projection television set |
RU2394270C1 (ru) | 2006-07-11 | 2010-07-10 | Хэллибертон Энерджи Сервисиз, Инк. | Модульный приборный узел для геоуправления |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5034417A (US07534539-20090519-C00280.png) * | 1973-07-31 | 1975-04-02 | ||
JPS53115137A (en) * | 1977-03-17 | 1978-10-07 | Sanyo Electric Co Ltd | Projection-type color television device |
US4631576A (en) * | 1984-11-13 | 1986-12-23 | Hazeltine Corporation | Nonuniformity correction system for color CRT display |
US4599651A (en) * | 1984-11-28 | 1986-07-08 | Rca Corporation | Pulse amplifier in a brightness control system |
US4599641A (en) * | 1984-11-28 | 1986-07-08 | Rca Corporation | Brightness control apparatus for a video signal processing system |
JPS62185491A (ja) * | 1986-02-10 | 1987-08-13 | Matsushita Electric Ind Co Ltd | フオ−カス回路 |
-
1986
- 1986-05-14 JP JP1986072534U patent/JPH0516765Y2/ja not_active Expired - Lifetime
-
1987
- 1987-05-11 US US07/048,620 patent/US4746973A/en not_active Expired - Lifetime
- 1987-05-13 CA CA000537059A patent/CA1280832C/en not_active Expired - Lifetime
- 1987-05-13 KR KR2019870007254U patent/KR930004820Y1/ko not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
KR930004820Y1 (ko) | 1993-07-23 |
KR870019230U (ko) | 1987-12-28 |
JPH0516765Y2 (US07534539-20090519-C00280.png) | 1993-05-06 |
US4746973A (en) | 1988-05-24 |
JPS62186558U (US07534539-20090519-C00280.png) | 1987-11-27 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
MKEX | Expiry |