DE3441978A1 - Resonanzentmagnetisierung ohne restmagnetismus - Google Patents
Resonanzentmagnetisierung ohne restmagnetismusInfo
- Publication number
- DE3441978A1 DE3441978A1 DE19843441978 DE3441978A DE3441978A1 DE 3441978 A1 DE3441978 A1 DE 3441978A1 DE 19843441978 DE19843441978 DE 19843441978 DE 3441978 A DE3441978 A DE 3441978A DE 3441978 A1 DE3441978 A1 DE 3441978A1
- Authority
- DE
- Germany
- Prior art keywords
- current
- circuit
- degaussing
- capacitor
- voltage
- 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.)
- Granted
Links
- 230000005389 magnetism Effects 0.000 title description 3
- 230000005415 magnetization Effects 0.000 title 1
- 230000005347 demagnetization Effects 0.000 claims description 15
- 239000003990 capacitor Substances 0.000 description 30
- 238000010586 diagram Methods 0.000 description 4
- 238000004804 winding Methods 0.000 description 4
- 238000011084 recovery Methods 0.000 description 3
- 230000002441 reversible effect Effects 0.000 description 3
- 230000004907 flux Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- CLSVJBIHYWPGQY-UHFFFAOYSA-N [3-(2,5-dimethylphenyl)-8-methoxy-2-oxo-1-azaspiro[4.5]dec-3-en-4-yl] ethyl carbonate Chemical compound CCOC(=O)OC1=C(C=2C(=CC=C(C)C=2)C)C(=O)NC11CCC(OC)CC1 CLSVJBIHYWPGQY-UHFFFAOYSA-N 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005672 electromagnetic field Effects 0.000 description 1
- 229910000939 field's metal Inorganic materials 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 230000001960 triggered effect 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
- H04N9/16—Picture reproducers using cathode ray tubes
- H04N9/29—Picture reproducers using cathode ray tubes using demagnetisation or compensation of external magnetic fields
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Video Image Reproduction Devices For Color Tv Systems (AREA)
- Details Of Television Scanning (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US06/553,007 US4535270A (en) | 1983-11-17 | 1983-11-17 | Resonant degaussing without residual magnetism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DE3441978A1 true DE3441978A1 (de) | 1985-06-05 |
| DE3441978C2 DE3441978C2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1987-07-30 |
Family
ID=24207736
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19843441978 Granted DE3441978A1 (de) | 1983-11-17 | 1984-11-16 | Resonanzentmagnetisierung ohne restmagnetismus |
Country Status (10)
Families Citing this family (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4636911A (en) * | 1984-11-30 | 1987-01-13 | Rca Corporation | Resonant degaussing for a video display system |
| NL8500862A (nl) * | 1985-03-25 | 1986-10-16 | Philips Nv | Werkwijze voor het vervaardigen van een kleurenbeeldbuis en inrichting voor het uitvoeren van deze werkwijze. |
| US4742270A (en) * | 1985-09-30 | 1988-05-03 | Rca Corporation | Degaussing circuit with residual current cutoff |
| GB8525138D0 (en) * | 1985-10-11 | 1985-11-13 | Rca Corp | Resonance degaussing circuit |
| EP0219287B1 (en) * | 1985-10-11 | 1991-01-30 | Rca Licensing Corporation | Cathode ray tube degaussing circuitry |
| US4700114A (en) * | 1986-04-15 | 1987-10-13 | Rca Corporation | Vertical deflection circuit |
| GB2196817A (en) * | 1986-10-30 | 1988-05-05 | Ibm | Degaussing system offsets ambient magnetic fields |
| GB8705956D0 (en) * | 1987-03-13 | 1987-04-15 | Rca Corp | Charge pump |
| JP2965565B2 (ja) * | 1988-02-18 | 1999-10-18 | 株式会社東芝 | 映像管の消磁方法、その消磁装置、カラーテレビジョン受像機およびカラー受像管の試験方法 |
| US5901029A (en) * | 1988-03-28 | 1999-05-04 | Kabushiki Kaisha Toshiba | Method of degaussing a color cathode ray tube |
| JP2612044B2 (ja) * | 1988-07-21 | 1997-05-21 | 株式会社日立製作所 | 電子ファイル装置 |
| US4950955A (en) * | 1988-09-06 | 1990-08-21 | Rca Licensing Corporation | Magnetic field compensator for a CRT |
| US4996461A (en) * | 1989-09-07 | 1991-02-26 | Hughes Aircraft Company | Closed loop bucking field system |
| US5168195A (en) * | 1991-08-09 | 1992-12-01 | Thomson Consumer Electronics, Inc. | Magnetic field compensation apparatus |
| US5499156A (en) * | 1994-11-18 | 1996-03-12 | Hughes Aircraft Company | Forced, resonant degaussing system and method |
| US5929641A (en) * | 1996-08-22 | 1999-07-27 | Thomson Consumer Electronics, Inc. | Breakdown event detector |
| US5729092A (en) * | 1996-08-22 | 1998-03-17 | Thomson Consumer Electronics, Inc. | CRT focus mask degaussing arrangement responsive to a breakdown event |
| DE60139624D1 (de) | 2000-06-15 | 2009-10-01 | 3M Innovative Properties Co | Erzeugung eines mehrfarbenbildes mittels eines multiphoton photochemischen verfahren |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3439211A (en) * | 1966-02-25 | 1969-04-15 | Television Cie Franc De | Periodic demagnetization of color cathode ray tube aboard moving vehicle |
| DE3127299A1 (de) * | 1981-07-10 | 1983-02-03 | Blaupunkt-Werke Gmbh, 3200 Hildesheim | Farbfernsehmonitor |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3733524A (en) * | 1972-03-01 | 1973-05-15 | Singer Co | Degaussing circuit |
| NL167289C (nl) * | 1973-09-13 | 1981-11-16 | Philips Nv | Kleurentelevisieweergeefinrichting voorzien van een kleurentelevisiebeeldbuis en een ontmagnetiserings- inrichting. |
| SE403686B (sv) * | 1977-01-14 | 1978-08-28 | Philips Svenska Ab | Avmagnetiseringsanordning |
| DE2835611A1 (de) * | 1978-08-14 | 1980-02-28 | Licentia Gmbh | Schaltung zur entmagnetisierung der bildroehre in einem farbfernsehempfaenger |
| US4380716A (en) * | 1981-10-09 | 1983-04-19 | Hazeltine Corporation | External magnetic field compensator for a CRT |
| JPS5927690A (ja) * | 1982-08-07 | 1984-02-14 | Denki Onkyo Co Ltd | 消磁方法 |
| US4441052A (en) * | 1982-11-26 | 1984-04-03 | Rca Corporation | Degaussing circuit for television receiver having switched mode power supply |
-
1983
- 1983-11-17 US US06/553,007 patent/US4535270A/en not_active Expired - Lifetime
-
1984
- 1984-10-29 IT IT8423357A patent/IT1206344B/it active
- 1984-11-08 CA CA000467397A patent/CA1258291A/en not_active Expired
- 1984-11-14 BE BE0/214002A patent/BE901048A/fr not_active IP Right Cessation
- 1984-11-15 JP JP59242183A patent/JPH0697791B2/ja not_active Expired - Lifetime
- 1984-11-15 KR KR1019840007156A patent/KR920006153B1/ko not_active Expired
- 1984-11-16 GB GB08429056A patent/GB2150400B/en not_active Expired
- 1984-11-16 DE DE19843441978 patent/DE3441978A1/de active Granted
- 1984-11-16 FR FR848417547A patent/FR2555385B1/fr not_active Expired
-
1993
- 1993-03-18 HK HK248/93A patent/HK24893A/xx not_active IP Right Cessation
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3439211A (en) * | 1966-02-25 | 1969-04-15 | Television Cie Franc De | Periodic demagnetization of color cathode ray tube aboard moving vehicle |
| DE3127299A1 (de) * | 1981-07-10 | 1983-02-03 | Blaupunkt-Werke Gmbh, 3200 Hildesheim | Farbfernsehmonitor |
Also Published As
| Publication number | Publication date |
|---|---|
| IT8423357A0 (it) | 1984-10-29 |
| DE3441978C2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1987-07-30 |
| BE901048A (fr) | 1985-03-01 |
| FR2555385B1 (fr) | 1989-10-13 |
| CA1258291A (en) | 1989-08-08 |
| HK24893A (en) | 1993-03-26 |
| FR2555385A1 (fr) | 1985-05-24 |
| KR920006153B1 (ko) | 1992-07-31 |
| GB8429056D0 (en) | 1984-12-27 |
| KR850004010A (ko) | 1985-06-29 |
| JPS60137194A (ja) | 1985-07-20 |
| IT1206344B (it) | 1989-04-14 |
| US4535270A (en) | 1985-08-13 |
| GB2150400A (en) | 1985-06-26 |
| JPH0697791B2 (ja) | 1994-11-30 |
| GB2150400B (en) | 1987-10-14 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 8110 | Request for examination paragraph 44 | ||
| D2 | Grant after examination | ||
| 8364 | No opposition during term of opposition | ||
| 8327 | Change in the person/name/address of the patent owner |
Owner name: RCA LICENSING CORP., PRINCETON, N.J., US |
|
| 8320 | Willingness to grant licences declared (paragraph 23) |