DE3162495D1 - Projection television apparatus - Google Patents
Projection television apparatusInfo
- Publication number
- DE3162495D1 DE3162495D1 DE8181200581T DE3162495T DE3162495D1 DE 3162495 D1 DE3162495 D1 DE 3162495D1 DE 8181200581 T DE8181200581 T DE 8181200581T DE 3162495 T DE3162495 T DE 3162495T DE 3162495 D1 DE3162495 D1 DE 3162495D1
- Authority
- DE
- Germany
- Prior art keywords
- deflection
- television apparatus
- projection
- projection television
- sensing
- 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
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N3/00—Scanning details of television systems; Combination thereof with generation of supply voltages
- H04N3/10—Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical
- H04N3/16—Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical by deflecting electron beam in cathode-ray tube, e.g. scanning corrections
- H04N3/20—Prevention of damage to cathode-ray tubes in the event of failure of scanning
-
- 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
- H04N5/7408—Direct viewing projectors, e.g. an image displayed on a video CRT or LCD display being projected on a screen
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB8018880A GB2078069B (en) | 1980-06-10 | 1980-06-10 | Projection television apparatus |
Publications (1)
Publication Number | Publication Date |
---|---|
DE3162495D1 true DE3162495D1 (en) | 1984-04-12 |
Family
ID=10513924
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE8181200581T Expired DE3162495D1 (en) | 1980-06-10 | 1981-05-29 | Projection television apparatus |
Country Status (6)
Country | Link |
---|---|
US (1) | US4404500A (de) |
EP (1) | EP0041754B1 (de) |
JP (1) | JPS5726981A (de) |
AT (1) | ATE6566T1 (de) |
DE (1) | DE3162495D1 (de) |
GB (1) | GB2078069B (de) |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4521720A (en) * | 1982-05-28 | 1985-06-04 | Zenith Electronics Corporation | Projection TV CRT burn protection |
US4642532A (en) * | 1984-05-10 | 1987-02-10 | Rca Corporation | Projection TV deflection loss protection circuit |
DE3732002A1 (de) * | 1987-09-23 | 1989-04-06 | Gerald Dipl Phys Meyer | Farbfernsehprojektionseinrichtung mit selbsttaetiger korrektur von bildgeometrie und farbkonvergenz |
US5034665A (en) * | 1990-04-30 | 1991-07-23 | Thomson Consumer Electronics, Inc. | Deflection loss protection arrangement for a CRT |
US5036257A (en) * | 1990-04-30 | 1991-07-30 | Thomson Consumer Electronics, Inc. | Projection TV deflection loss protection circuit |
US5089754A (en) * | 1990-04-30 | 1992-02-18 | Thomson Consumer Electronics, Inc. | Protection circuit for a cathode ray tube |
US5036260A (en) * | 1990-04-30 | 1991-07-30 | Thomson Consumer Electronics, Inc. | Self biasing protection arrangement for a cathode ray tube |
JP3127963B2 (ja) * | 1990-12-26 | 2001-01-29 | 株式会社日立製作所 | 陰極線管ディスプレイ |
US5130615A (en) * | 1991-07-01 | 1992-07-14 | Thomson Consumer Electronics, Inc. | Television apparatus having kinescope spot burn protection circuit with extended grid cut-off time constant |
US5821924A (en) * | 1992-09-04 | 1998-10-13 | Elonex I.P. Holdings, Ltd. | Computer peripherals low-power-consumption standby system |
US5389952A (en) * | 1992-12-02 | 1995-02-14 | Cordata Inc. | Low-power-consumption monitor standby system |
US5463289A (en) * | 1993-01-30 | 1995-10-31 | Samsung Electronics Co., Ltd. | First grid muting circuit |
JP3834990B2 (ja) * | 1998-03-06 | 2006-10-18 | ソニー株式会社 | 陰極線管表示装置 |
KR100301512B1 (ko) * | 1998-12-31 | 2001-09-06 | 구자홍 | 영상표시기기의스크린보호방법 |
Family Cites Families (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3090889A (en) * | 1960-05-03 | 1963-05-21 | Bell Telephone Labor Inc | Electron beam intensity control circuit |
US3399324A (en) * | 1965-02-09 | 1968-08-27 | Sylvania Electric Prod | Television camera circuits |
GB1147827A (en) * | 1966-10-14 | 1969-04-10 | British Insulated Callenders | Improvements in and relating to the testing of high voltage electric cables |
CH489972A (fr) * | 1968-04-22 | 1970-04-30 | Setalec S A | Dispositif pour la protection des récepteurs de télévision |
JPS4824320U (de) * | 1971-07-27 | 1973-03-22 | ||
US3848945A (en) * | 1973-03-16 | 1974-11-19 | Warwick Electronics Inc | Brightness limiting circuit |
JPS5516391Y2 (de) * | 1974-08-05 | 1980-04-16 | ||
US3963961A (en) * | 1974-12-23 | 1976-06-15 | United Technologies Corporation | Cathode ray tube phosphor protection circuit |
JPS5291484A (en) * | 1976-01-27 | 1977-08-01 | Tabai Seisakushiyo Kk | Wick for wettbulb |
JPS5315218U (de) * | 1976-07-19 | 1978-02-08 | ||
JPS5832378Y2 (ja) * | 1977-06-23 | 1983-07-18 | 松下電器産業株式会社 | コンバ−ゼンス装置 |
NL7709969A (nl) * | 1977-09-12 | 1979-03-14 | Philips Nv | Kleuren beeldweergeefinrichting met een schake- ling voor het opwekken van een schermroosterspan- ning. |
JPS54145023U (de) * | 1978-03-30 | 1979-10-08 | ||
JPS5539779U (de) * | 1978-09-04 | 1980-03-14 | ||
US4198661A (en) * | 1979-02-01 | 1980-04-15 | American Optical Corporation | Cathode ray tube burn-in prevention apparatus |
US4297619A (en) * | 1981-01-02 | 1981-10-27 | Zenith Radio Corporation | Phosphor protection circuit for multiple CRT projection television |
-
1980
- 1980-06-10 GB GB8018880A patent/GB2078069B/en not_active Expired
-
1981
- 1981-05-29 EP EP81200581A patent/EP0041754B1/de not_active Expired
- 1981-05-29 DE DE8181200581T patent/DE3162495D1/de not_active Expired
- 1981-05-29 AT AT81200581T patent/ATE6566T1/de not_active IP Right Cessation
- 1981-06-04 US US06/270,667 patent/US4404500A/en not_active Expired - Lifetime
- 1981-06-08 JP JP8701681A patent/JPS5726981A/ja active Granted
Also Published As
Publication number | Publication date |
---|---|
US4404500A (en) | 1983-09-13 |
GB2078069A (en) | 1981-12-23 |
JPH027223B2 (de) | 1990-02-16 |
ATE6566T1 (de) | 1984-03-15 |
GB2078069B (en) | 1984-03-28 |
JPS5726981A (en) | 1982-02-13 |
EP0041754A2 (de) | 1981-12-16 |
EP0041754B1 (de) | 1984-03-07 |
EP0041754A3 (en) | 1982-03-03 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8327 | Change in the person/name/address of the patent owner |
Owner name: PHILIPS ELECTRONICS N.V., EINDHOVEN, NL |
|
8339 | Ceased/non-payment of the annual fee |