ES2089060T3 - Aparato de compensacion de campo magnetico. - Google Patents

Aparato de compensacion de campo magnetico.

Info

Publication number
ES2089060T3
ES2089060T3 ES91110419T ES91110419T ES2089060T3 ES 2089060 T3 ES2089060 T3 ES 2089060T3 ES 91110419 T ES91110419 T ES 91110419T ES 91110419 T ES91110419 T ES 91110419T ES 2089060 T3 ES2089060 T3 ES 2089060T3
Authority
ES
Spain
Prior art keywords
coil
section
axis
lower sections
magnetic field
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
Application number
ES91110419T
Other languages
English (en)
Inventor
Guiseppe Giannantonio
Goffredo Antonelli
Cesare Depaolis
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.)
Videocolor SpA
Original Assignee
Videocolor SpA
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 Videocolor SpA filed Critical Videocolor SpA
Application granted granted Critical
Publication of ES2089060T3 publication Critical patent/ES2089060T3/es
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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
    • H01J29/46—Arrangements of electrodes and associated parts for generating or controlling the ray or beam, e.g. electron-optical arrangement
    • H01J29/56—Arrangements for controlling cross-section of ray or beam; Arrangements for correcting aberration of beam, e.g. due to lenses
    • 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
    • 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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Video Image Reproduction Devices For Color Tv Systems (AREA)
  • Vessels, Lead-In Wires, Accessory Apparatuses For Cathode-Ray Tubes (AREA)

Abstract

UNA BOBINA DE COMPENSACION (50) PARA ESCANEAR UNA PANTALLA DE HACES DE ELECTRONES, COMO UN TUBO DE TELEVISION A COLOR (20), REDUCE LA DELECCION NO DESEADA DEL HAZ DE ELECTRONES OCASIONADO POR LOS CAMPOS MAGNETICOS AMBIENTALES, PARTICULARMENTE AL CAMPO GEOMAGNETICO. UNA PRIMERA SECCION DE LA BOBINA (52) TIENE AL MENOS UNA VUELTA DISPUESTA DE TAL MODO COMO PARA RODEAR LA GARGANTA DEL TUBO (32), PERPENDICULARMENTE AL EJE Z. LAS SECCIONES SUPERIORES E INFERIORES DE LA BOBINA (62, 64) ESTAN COLOCADAS POR ENCIMA Y DEBAJO DE LA PRIMERA SECCION DE LA BOBINA (52), CADA UNA INCLINADA CON RESPECTO AL EJE Z Y DISPONEN DE UN RODETE RODEANDO LA ZONA QUE SE EXTIENDE EN LAS DIRECCIONES X E Y, SIGUIENDO LA SUPERFICIE DE UNA PANTALLA CONTRA EL CAMPO MAGNETICO (80). LAS SECCIONES DE LA BOBINA ESTAN ACOPLADAS EN SERIES. LAS SECCIONES SUPERIOR E INFERIOR DE LA BOBINA TIENE UNA DIMENSION MAS ANCHA EN EL EJE X SIGUIENDO HACIA EL EJE Z, Y CON LA FORMA DE UN MOJON. LAS LONGITUDES LATERALES (60) DE LAS SECCIONES SUPERIOR E INFERIOR DE LA BOBINA CONECTAN CON LA PRIMERA SECCION DE LA BOBINA POR MEDIO DE SUPERFICIES LATERALES, DE MANERA QUE LA BOBINA DE COMPENSACION TIENE UN BOBINADO CONTINUO. LA PRIMERA SECCION DE LA BOBINA PUEDE DISPONER DE DOS PASOS POR CADA PASO DE LAS SECCIONES SUPERIOR E INFERIOR.
ES91110419T 1990-06-25 1991-06-24 Aparato de compensacion de campo magnetico. Expired - Lifetime ES2089060T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT02075390A IT1251351B (it) 1990-06-25 1990-06-25 Apparecchio per la compensazione di campi magnetici

Publications (1)

Publication Number Publication Date
ES2089060T3 true ES2089060T3 (es) 1996-10-01

Family

ID=11171552

Family Applications (1)

Application Number Title Priority Date Filing Date
ES91110419T Expired - Lifetime ES2089060T3 (es) 1990-06-25 1991-06-24 Aparato de compensacion de campo magnetico.

Country Status (9)

Country Link
US (1) US5170094A (es)
EP (1) EP0464576B1 (es)
JP (1) JP3299999B2 (es)
KR (1) KR100211001B1 (es)
CN (1) CN1032344C (es)
DE (1) DE69119651T2 (es)
ES (1) ES2089060T3 (es)
IT (1) IT1251351B (es)
SG (1) SG55058A1 (es)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3257055B2 (ja) * 1992-08-21 2002-02-18 ソニー株式会社 陰極線管
KR940016423A (ko) * 1992-12-16 1994-07-23 황선두 편향 요크
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
US7092352B2 (en) * 1993-07-23 2006-08-15 Aquity, Llc Cancellation systems for multicarrier transceiver arrays
US6208135B1 (en) 1994-07-22 2001-03-27 Steve J. Shattil Inductive noise cancellation circuit for electromagnetic pickups
US5475282A (en) * 1993-08-18 1995-12-12 Efa Corporation Dual-coil type CRT image tilt correcting device
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
BE1007908A3 (nl) * 1993-12-24 1995-11-14 Philips Electronics Nv Beeldweergave-inrichting met afbuigeenheid en afbuigeenheid voor een beeldweergave-inrichting.
GB2311892B (en) * 1996-04-03 2001-01-24 Samsung Electronics Co Ltd Magnetic field shielding in display
US5739638A (en) * 1996-06-24 1998-04-14 Thomson Consumer Electronics, Inc. Bus controlled arrangement using a duty cycle modulated control signal in a CRT
US5744904A (en) * 1996-09-16 1998-04-28 Acer Peripherals, Inc. Apparatus for reducing magnetic field radiated from deflection yoke
KR19980051541A (ko) * 1996-12-23 1998-09-15 구자홍 음극선관용 편향요크
JPH11127446A (ja) * 1997-10-24 1999-05-11 Matsushita Electric Ind Co Ltd 地磁気補正装置とテレビジョン受像機
US6527697B2 (en) 2000-12-21 2003-03-04 Ms Relief Ltd. Method for alleviating symptoms of certain types of disorders using electromagnetic fields
WO2007027184A1 (en) * 2005-08-31 2007-03-08 Thomson Licensing Internal magnetic shield for display devices with orthogonal scanning

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3879633A (en) * 1963-12-19 1975-04-22 Rca Corp Television degaussing system with saddle-type coils adjacent CRT cone
US3322998A (en) * 1964-08-31 1967-05-30 Rca Corp Color purity correcting apparatus for colored television picture tubes
US3614519A (en) * 1967-12-18 1971-10-19 Zenith Radio Corp Cathode-ray tube magnetic shield
NL6803012A (es) * 1968-03-02 1969-09-04
DE6940484U (de) * 1969-10-17 1970-07-02 Philips Patentverwaltung Entmagnetisierungspruefgeraet.
CA977406A (en) * 1972-04-14 1975-11-04 Yoshiichi Matsushima Degaussing device for colour cathode ray tubes
JPS5530277A (en) * 1978-08-25 1980-03-04 Matsushita Electronics Corp Color picture-tube unit
JPS61264992A (ja) * 1985-05-20 1986-11-22 Mitsubishi Electric Corp カラ−テレビジヨン受像機
JPS61296878A (ja) * 1985-06-25 1986-12-27 Mitsubishi Electric Corp カラ−テレビジヨン受像機
FR2606574B1 (fr) * 1986-11-07 1989-01-13 Videocolor Dispositif de protection de tubes cathodiques a masque vis-a-vis du champ magnetique terrestre

Also Published As

Publication number Publication date
IT1251351B (it) 1995-05-08
SG55058A1 (en) 1998-12-21
JP3299999B2 (ja) 2002-07-08
IT9020753A1 (it) 1991-12-26
CN1062236A (zh) 1992-06-24
US5170094A (en) 1992-12-08
IT9020753A0 (it) 1990-06-25
EP0464576B1 (en) 1996-05-22
DE69119651T2 (de) 1996-11-28
EP0464576A3 (en) 1992-10-28
EP0464576A2 (en) 1992-01-08
CN1032344C (zh) 1996-07-17
JPH04253491A (ja) 1992-09-09
KR100211001B1 (ko) 1999-07-15
DE69119651D1 (de) 1996-06-27
KR920001606A (ko) 1992-01-30

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