DE69024738T2 - Aussenfeldkompensationssystem im geschlossenen Regelkreis - Google Patents

Aussenfeldkompensationssystem im geschlossenen Regelkreis

Info

Publication number: DE69024738T2
Authority: DE; Germany
Prior art keywords: control loop; compensation system; external field; closed control; field compensation
Prior art date: 1989-09-07
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

Application number

DE69024738T

Other languages

English (en)

Other versions

DE69024738D1 (de

Inventor

Robert M Bentley

Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)

Raytheon Co

Original Assignee

Hughes Aircraft Co

Priority date (The priority date 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 date listed.)

1989-09-07

Filing date

1990-08-16

Publication date

1996-05-30

1990-08-16 Application filed by Hughes Aircraft Co filed Critical Hughes Aircraft Co

1996-02-22 Application granted granted Critical

1996-02-22 Publication of DE69024738D1 publication Critical patent/DE69024738D1/de

1996-05-30 Publication of DE69024738T2 publication Critical patent/DE69024738T2/de

2010-08-17 Anticipated expiration legal-status Critical

Status Expired - Fee Related legal-status Critical Current

Links

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
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
- H01J29/003—Arrangements for eliminating unwanted electromagnetic effects, e.g. demagnetisation arrangements, shielding coils
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J2229/00—Details of cathode ray tubes or electron beam tubes
- H01J2229/0007—Elimination of unwanted or stray electromagnetic effects
- H01J2229/003—Preventing or cancelling fields entering the enclosure
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J2229/00—Details of cathode ray tubes or electron beam tubes
- H01J2229/0007—Elimination of unwanted or stray electromagnetic effects
- H01J2229/003—Preventing or cancelling fields entering the enclosure
- H01J2229/0038—Active means

DE69024738T 1989-09-07 1990-08-16 Aussenfeldkompensationssystem im geschlossenen Regelkreis Expired - Fee Related DE69024738T2 (de)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
US07/404,147 US4996461A (en)	1989-09-07	1989-09-07	Closed loop bucking field system

Publications (2)

Publication Number	Publication Date
DE69024738D1 DE69024738D1 (de)	1996-02-22
DE69024738T2 true DE69024738T2 (de)	1996-05-30

Family

ID=23598362

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
DE69024738T Expired - Fee Related DE69024738T2 (de)	1989-09-07	1990-08-16	Aussenfeldkompensationssystem im geschlossenen Regelkreis

Country Status (5)

Country	Link
US (1)	US4996461A (de)
EP (1)	EP0421592B1 (de)
JP (1)	JP2510346B2 (de)
CA (1)	CA2022162C (de)
DE (1)	DE69024738T2 (de)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE69207227T2 (de) *	1991-02-20	1996-09-05	Nanao Corp	Gerät zur Unterdrückung der Strahlung einer Anzeigevorrichtung
US5399939A (en) *	1992-01-03	1995-03-21	Environmental Services & Products, Inc.	Magnetic shield with cathode ray tube standoff for a computer monitor
US5198729A (en) *	1992-07-02	1993-03-30	Display Technologies, Inc.	CRT monitor with elimination of unwanted time variable electric field
US5561333A (en) *	1993-05-10	1996-10-01	Mti, Inc.	Method and apparatus for reducing the intensity of magnetic field emissions from video display units
US5594615A (en) *	1993-05-10	1997-01-14	Mti, Inc.	Method and apparatus for reducing the intensity of magenetic field emissions from display device
JP3135421B2 (ja) *	1993-07-06	2001-02-13	松下電子工業株式会社	カラー陰極線管
JPH07162881A (ja) *	1993-12-10	1995-06-23	Mitsubishi Electric Corp	カラー陰極線管ディスプレイ装置
JPH07162882A (ja) *	1993-12-10	1995-06-23	Sony Corp	陰極線管装置
GB2293299A (en) *	1994-09-15	1996-03-20	Ibm	Electric field emission reduction system
US5473221A (en) *	1994-11-18	1995-12-05	Hughes Aircraft Company	Bucking field system and method for mitigating the effects of an external magnetic field on a cathode ray tube display
JPH08179020A (ja) *	1994-12-22	1996-07-12	Sumitomo Metal Mining Co Ltd	磁気補正回路及びそれを用いた画像表示装置
US5742128A (en) *	1995-02-02	1998-04-21	Orwin Associates, Inc.	Apparatus for mitigating the effects of ambient magnetic fields on the operation of a CRT
US5604403A (en) *	1995-06-06	1997-02-18	Aydin Corporation	Color monitor magnetic shield
JP3571188B2 (ja) *	1997-08-18	2004-09-29	エヌイーシー三菱電機ビジュアルシステムズ株式会社	外部磁界補正装置およびｃｒｔディスプレイ装置
JP2001309398A (ja) *	2000-04-18	2001-11-02	Sony Corp	画像表示装置及び画像表示装置の地磁気による画像の傾き補正方法

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US3757154A (en) *	1971-03-03	1973-09-04	Sony Corp	Magnetic field on color television receivers apparatus for automatically eliminating the influence of the earth s
US3932813A (en) *	1972-04-20	1976-01-13	Simmonds Precision Products, Inc.	Eddy current sensor
US3867668A (en) *	1973-11-29	1975-02-18	Rca Corp	Cathode-ray tube having an internal-external magnetic shield and degaussing combination
JPS5247321A (en) *	1975-10-13	1977-04-15	Sony Corp	Earth magnetism detection equipment of color tv receiver
JPS55104187A (en) *	1979-02-05	1980-08-09	Matsushita Electric Ind Co Ltd	Television receiver
DE3017331A1 (de) *	1980-05-06	1981-11-12	Siemens AG, 1000 Berlin und 8000 München	Anordnung zur kompensation von auf farbfernsehroehren einwirkenden magnetischen fremdfeldern
GB2105956B (en) *	1981-08-04	1985-02-06	Tokyo Shibaura Electric Co	Cathode ray tube device
US4380716A (en) *	1981-10-09	1983-04-19	Hazeltine Corporation	External magnetic field compensator for a CRT
US4535270A (en) *	1983-11-17	1985-08-13	Rca Corporation	Resonant degaussing without residual magnetism
US4556821A (en) *	1984-03-15	1985-12-03	Rca Corporation	Color image display system having an improved external magnetic shield
JPS6181269U (de) *	1984-10-31	1986-05-29
JPS6226989U (de) *	1985-08-01	1987-02-18
SE459054C (sv) *	1986-03-07	1992-07-30	Philips Norden Ab	Foerfarande foer reducering av magnetiskt laeckfaelt samt anordning foer genomfoerande av foerfarandet
IN167955B (de) *	1986-03-27	1991-01-12	Nokia Data Systems
JPS63208386A (ja) *	1987-02-24	1988-08-29	Nec Corp	磁界除去回路
US4899082A (en) *	1987-03-25	1990-02-06	Digital Equipment Corporation	Apparatus for compensating for image rotation in a CRT display
US4864192A (en) *	1987-11-09	1989-09-05	General Electric Company	CRT magnetic field compensation

1989
- 1989-09-07 US US07/404,147 patent/US4996461A/en not_active Expired - Fee Related
1990
- 1990-07-27 CA CA002022162A patent/CA2022162C/en not_active Expired - Fee Related
- 1990-08-16 DE DE69024738T patent/DE69024738T2/de not_active Expired - Fee Related
- 1990-08-16 EP EP90309021A patent/EP0421592B1/de not_active Expired - Lifetime
- 1990-09-07 JP JP2238855A patent/JP2510346B2/ja not_active Expired - Lifetime

Also Published As

Publication number	Publication date
CA2022162A1 (en)	1991-03-08
JP2510346B2 (ja)	1996-06-26
EP0421592A2 (de)	1991-04-10
JPH03276970A (ja)	1991-12-09
CA2022162C (en)	1994-01-25
EP0421592B1 (de)	1996-01-10
EP0421592A3 (en)	1991-11-13
US4996461A (en)	1991-02-26
DE69024738D1 (de)	1996-02-22

Legal Events

Date	Code	Title	Description
1997-02-13	8364	No opposition during term of opposition
2000-07-06	8327	Change in the person/name/address of the patent owner	Owner name: RAYTHEON CO., LEXINGTON, MASS., US
2002-09-26	8339	Ceased/non-payment of the annual fee

Publication	Publication Date	Title
NO972058L (no)	1992-06-01	Brönn styresystem
BR9105522A (pt)	1992-09-01	Controle de resina
DE69024738D1 (de)	1996-02-22	Aussenfeldkompensationssystem im geschlossenen Regelkreis
DE69121718D1 (de)	1996-10-02	Prozessregelgerät mit schleifenüberstromschutz
DE69214902T2 (de)	1997-02-27	Vektorregelschleife
DE68915596D1 (de)	1994-07-07	Frequenzentsprechender Schrittmacher mit geschlossener Regelschleife.
DE69316559T2 (de)	1998-09-10	Servoregelkreissteuerung
DE3481595D1 (de)	1990-04-19	Registerregelung in geschlossener schleife.
FR2602701B1 (fr)	1989-04-28	Commande electromagnetique
DE69126813T2 (de)	1998-02-12	Supraleitender Magnet
GB9007980D0 (en)	1990-06-06	Superconducting magnet
GB2215471B (en)	1991-10-02	Superconducting magnet
DE69120708T2 (de)	1997-02-27	Supraleitender Magnet
DE59107729D1 (de)	1996-05-30	Positionssteuerung
IT8921985A0 (it)	1989-10-11	Rele' elettromagnetico
DE69127893D1 (de)	1997-11-13	Zählergesteuerte verschlussregelschaltung
GB2246227B (en)	1994-02-02	Environmental control system
DE69026890D1 (de)	1996-06-13	Zweidraht-Leistungs- und -Positionssteuerungssystem
IT1230280B (it)	1991-10-18	Rele' elettromagnetico.
EP0300673A3 (en)	1990-03-21	Closed loop control system
SG47115A1 (en)	1998-03-20	Servo control loop
KR200206151Y1 (en)	2000-12-01	Servo control loop
ATA84790A (de)	1992-06-15	Schlosssteuerung
HUT64426A (en)	1993-12-28	Cash gate for toys
AU2465492A (en)	1993-03-02	Sagnac loop gates