ES2107969A1 - Sistema y metodo de desmagnetizacion resonante, forzada. - Google Patents

Sistema y metodo de desmagnetizacion resonante, forzada.

Info

Publication number
ES2107969A1
ES2107969A1 ES09502262A ES9502262A ES2107969A1 ES 2107969 A1 ES2107969 A1 ES 2107969A1 ES 09502262 A ES09502262 A ES 09502262A ES 9502262 A ES9502262 A ES 9502262A ES 2107969 A1 ES2107969 A1 ES 2107969A1
Authority
ES
Spain
Prior art keywords
coil
degaussing
circuit
time
forced
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
Application number
ES09502262A
Other languages
English (en)
Other versions
ES2107969B1 (es
Inventor
Bentley Robert M
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.)
Filing date
Publication date
Application filed by Hughes Aircraft Co filed Critical Hughes Aircraft Co
Publication of ES2107969A1 publication Critical patent/ES2107969A1/es
Application granted granted Critical
Publication of ES2107969B1 publication Critical patent/ES2107969B1/es
Anticipated expiration legal-status Critical
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

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Video Image Reproduction Devices For Color Tv Systems (AREA)
  • Inverter Devices (AREA)
  • Electrotherapy Devices (AREA)
  • Control Of Electric Motors In General (AREA)

Abstract

SISTEMA Y METODO DE DESMAGNETIZACION RESONANTE, FORZADA; EL SISTEMA DE DESMAGNETIZACION (20) PARA MONITORES EN COLORES, DURANTE UN CICLO DE DESMAGNETIZACION, INVIERTE SUCESIVAMENTE EL ACOPLAMIENTO EN UN CIRCUITO DE PUENTE (22) ENTRE UNA BOBINA DE DESMAGNETIZACION (27) Y UN CONDENSADOR DE ALMACENAMIENTO (28) GENERANDOSE CORRIENTES DE DESMAGNETIZACION DIRIGIDAS OPUESTAMENTE A TRAVES DE LA BOBINA; PARA ASEGURAR QUE EL MAGNETISMO RESIDUAL DESPUES DE DESMAGNETIZAR SEA SUSTANCIALMENTE NULO, SE DESARROLLAN UNAS SEÑALES DE REALIMENTACION EN UN CIRCUITO (26) Y SE APLICAN A TRAVES DE UN CIRCUITO DE CONTROL (24) AL CIRCUITO DE PUENTE PARA DISMINUIR SUCESIVAMENTE LAS MAGNITUDES DE LA INTENSIDAD DE CORRIENTE DE LA BOBINA HASTA QUE ALCANCEN UN UMBRAL PREDETERMINADO; SIMULTANEAMENTE, LAS SEÑALES DE REALIMENTACION SON AJUSTADAS PARA QUE LA INTENSIDAD DE CORRIENTE INTEGRADA EN EL TIEMPO EN UNA DIRECCION DE LA BOBINA SE IGUALE SUSTANCIALMENTE A LA INTENSIDAD DE CORRIENTE INTEGRADA EN EL TIEMPO EN LA OTRA DIRECCION DE LA BOBINA.
ES09502262A 1994-11-18 1995-11-17 Sistema y metodo de desmagnetizacion resonante, forzada. Expired - Fee Related ES2107969B1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US08/341,727 US5499156A (en) 1994-11-18 1994-11-18 Forced, resonant degaussing system and method

Publications (2)

Publication Number Publication Date
ES2107969A1 true ES2107969A1 (es) 1997-12-01
ES2107969B1 ES2107969B1 (es) 1998-07-01

Family

ID=23338765

Family Applications (1)

Application Number Title Priority Date Filing Date
ES09502262A Expired - Fee Related ES2107969B1 (es) 1994-11-18 1995-11-17 Sistema y metodo de desmagnetizacion resonante, forzada.

Country Status (5)

Country Link
US (1) US5499156A (es)
JP (1) JP3120030B2 (es)
BE (1) BE1009190A3 (es)
ES (1) ES2107969B1 (es)
NO (1) NO317319B1 (es)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ATE192882T1 (de) * 1994-10-21 2000-05-15 Koninkl Philips Electronics Nv Farbbildanzeigevorrichtung mit farbbildröhre und entmagnetisierungsvorrichtung
KR970010216B1 (en) * 1994-12-02 1997-06-23 Samsung Electronics Co Ltd Tilt control circuit for crt
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
KR100202640B1 (ko) * 1995-12-07 1999-06-15 구본준 씨알티의 잔류자속 제거방법
US5729092A (en) * 1996-08-22 1998-03-17 Thomson Consumer Electronics, Inc. CRT focus mask degaussing arrangement responsive to a breakdown event
US5929641A (en) * 1996-08-22 1999-07-27 Thomson Consumer Electronics, Inc. Breakdown event detector
FI107683B (fi) * 1997-11-28 2001-09-14 Nokia Display Products Oy Menetelmä ja laite jäännösmagnetismista aiheutuvien kuvaputken kuvavirheiden korjaamiseksi
US6096062A (en) * 1998-06-08 2000-08-01 Pacesetter, Inc. Method and apparatus for maintaining a high voltage capacitor in an implantable cardiac device
US5907465A (en) * 1998-08-13 1999-05-25 Sensormatic Electronics Corporation Circuit for energizing EAS marker deactivation device with DC pulses of alternating polarity
KR20040081784A (ko) * 2002-02-11 2004-09-22 유니버시티 오브 버지니아 페이턴트 파운데이션 벌크 응고형 고망간 비강자성 비정질 강철 합금, 이의이용 방법 및 제조 방법
WO2005024075A2 (en) * 2003-06-02 2005-03-17 University Of Virginia Patent Foundation Non-ferromagnetic amorphous steel alloys containing large-atom metals
US7763125B2 (en) * 2003-06-02 2010-07-27 University Of Virginia Patent Foundation Non-ferromagnetic amorphous steel alloys containing large-atom metals
USRE47863E1 (en) 2003-06-02 2020-02-18 University Of Virginia Patent Foundation Non-ferromagnetic amorphous steel alloys containing large-atom metals
US7106536B2 (en) * 2004-09-30 2006-09-12 Agere Systems Inc. Write head demagnetizer
JP4250589B2 (ja) * 2004-12-28 2009-04-08 株式会社東芝 記録ヘッドの残留磁化消磁機能を有するヘッドアンプ回路及び同回路を備えた磁気ディスク装置
JP2006196107A (ja) * 2005-01-14 2006-07-27 Hitachi Global Storage Technologies Netherlands Bv 磁気記録装置及び記録方法
WO2006091875A2 (en) * 2005-02-24 2006-08-31 University Of Virginia Patent Foundation Amorphous steel composites with enhanced strengths, elastic properties and ductilities
US7515371B1 (en) * 2005-05-19 2009-04-07 Maxtor Corporation Channel postamble extension to de-gauss pole tips

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2150400A (en) * 1983-11-17 1985-06-26 Rca Corp Resonant degaussing without residual magnetism
JPS60134585A (ja) * 1983-12-22 1985-07-17 Matsushita Electric Ind Co Ltd 消磁装置
US4599673A (en) * 1984-12-03 1986-07-08 Rca Corporation Degaussing system arrangements
US4737881A (en) * 1985-10-11 1988-04-12 Rca Corporation Resonant degaussing apparatus
US4829214A (en) * 1986-12-08 1989-05-09 Rca Licensing Corporation Cathode ray tube degaussing control circuit
DE4240352C1 (de) * 1992-10-29 1993-12-09 Rft Rundfunk Fernseh Telekommu Schaltung zur Entmagnetisierung von Farbbildröhren
US5287242A (en) * 1991-05-01 1994-02-15 Sony Corporation Degaussing apparatus

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2962621A (en) * 1958-10-10 1960-11-29 Westinghouse Electric Corp Color television apparatus
FR1554575A (es) * 1966-02-25 1969-01-24
JPS5698982A (en) * 1980-01-11 1981-08-08 Toshiba Corp Magnetic eraser
US4489253A (en) * 1982-11-01 1984-12-18 Zenith Electronics Corporation Automatic degaussing circuit with switch mode power supply
GB2196817A (en) * 1986-10-30 1988-05-05 Ibm Degaussing system offsets ambient magnetic fields
JPH0346885A (ja) * 1989-07-11 1991-02-28 Samsung Electron Co Ltd リレーを用いたデガウシング回路
JPH05236488A (ja) * 1992-02-18 1993-09-10 Nanao:Kk カラーブラウン管の自動消磁方法と、その装置
JP3211840B2 (ja) * 1992-03-09 2001-09-25 船井電機株式会社 消磁装置および消磁方法
DE9215492U1 (de) * 1992-11-13 1993-01-07 Siemens AG, 8000 München Schaltungsanordnung zum Entmagnetisieren von Fernsehbildröhren
JP3277601B2 (ja) * 1993-03-31 2002-04-22 ソニー株式会社 Ｃｒｔディスプレイの漏洩電界相殺装置

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2150400A (en) * 1983-11-17 1985-06-26 Rca Corp Resonant degaussing without residual magnetism
JPS60134585A (ja) * 1983-12-22 1985-07-17 Matsushita Electric Ind Co Ltd 消磁装置
US4599673A (en) * 1984-12-03 1986-07-08 Rca Corporation Degaussing system arrangements
US4737881A (en) * 1985-10-11 1988-04-12 Rca Corporation Resonant degaussing apparatus
US4829214A (en) * 1986-12-08 1989-05-09 Rca Licensing Corporation Cathode ray tube degaussing control circuit
US5287242A (en) * 1991-05-01 1994-02-15 Sony Corporation Degaussing apparatus
DE4240352C1 (de) * 1992-10-29 1993-12-09 Rft Rundfunk Fernseh Telekommu Schaltung zur Entmagnetisierung von Farbbildröhren

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN, JPO. & JP 60134585 A (MATSUSHITA ELECTRIC IND. CO LTD) 17.07.85 *

Also Published As

Publication number Publication date
BE1009190A3 (fr) 1996-12-03
JPH08223595A (ja) 1996-08-30
NO954632D0 (no) 1995-11-16
NO317319B1 (no) 2004-10-11
JP3120030B2 (ja) 2000-12-25
US5499156A (en) 1996-03-12
NO954632L (no) 1996-05-20
ES2107969B1 (es) 1998-07-01

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