BR9905643A - Aparelho para corrigir automaticamente o campo magnético terrestre para monitor - Google Patents

Aparelho para corrigir automaticamente o campo magnético terrestre para monitor

Info

Publication number
BR9905643A
BR9905643A BR9905643-7A BR9905643A BR9905643A BR 9905643 A BR9905643 A BR 9905643A BR 9905643 A BR9905643 A BR 9905643A BR 9905643 A BR9905643 A BR 9905643A
Authority
BR
Brazil
Prior art keywords
magnetic field
unit
monitor
terrestrial magnetic
correction
Prior art date
Application number
BR9905643-7A
Other languages
English (en)
Inventor
Kyung Sic Kim
Jin Sik Kim
Original Assignee
Lg Electronics Inc
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 Lg Electronics Inc filed Critical Lg Electronics Inc
Publication of BR9905643A publication Critical patent/BR9905643A/pt

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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Video Image Reproduction Devices For Color Tv Systems (AREA)
  • Geophysics And Detection Of Objects (AREA)
  • Magnetic Resonance Imaging Apparatus (AREA)

Abstract

"APARELHO PARA CORRIGIR AUTOMATICAMENTE O CAMPO MAGNéTICO TERRESTRE PARA MONITOR". Um aparelho para corrigir automaticamente um campo magnético terrestre para um monitor inclui: uma unidade de percepção de campo magnético periférico para percepção de uma variação em um campo magnético e geração de uma freq³ência correspondente; uma unidade produtora de freq³ência para operar, aritmeticamente, a freq³ência gerada da unidade de percepção de campo magnético periférico e produção de freq³ências correspondentes em cada direção; uma unidade de computação de grau de correção para computar cada grau de correção correspondente às freq³ências de cada direção produzidas pela unidade produtora de freq³ência; e uma unidade de correção de deflexão para correção de um erro de deflexão do monitor, tanto quanto o grau corrigido na unidade de computação de grau de correção. Em virtude de ter tal construção, uma tela é automaticamente corrigida por percepção de um campo magnético terrestre com uma pequena capacidade de memória, alcançando, assim, a conveniência para os usuários em corrigir um campo magnético terrestre e manter uma ótima qualidade de imagem.
BR9905643-7A 1998-11-19 1999-11-18 Aparelho para corrigir automaticamente o campo magnético terrestre para monitor BR9905643A (pt)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019980049798A KR100296301B1 (ko) 1998-11-19 1998-11-19 모니터의지자계자동보정장치

Publications (1)

Publication Number Publication Date
BR9905643A true BR9905643A (pt) 2000-09-12

Family

ID=19559052

Family Applications (1)

Application Number Title Priority Date Filing Date
BR9905643-7A BR9905643A (pt) 1998-11-19 1999-11-18 Aparelho para corrigir automaticamente o campo magnético terrestre para monitor

Country Status (8)

Country Link
US (1) US6501222B1 (pt)
KR (1) KR100296301B1 (pt)
CN (1) CN1105355C (pt)
BR (1) BR9905643A (pt)
DE (1) DE19955497B4 (pt)
GB (1) GB2344041B (pt)
ID (1) ID25711A (pt)
TW (1) TW509883B (pt)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100387961B1 (ko) * 2001-04-24 2003-06-18 엘지전자 주식회사 스위블을 이용한 화면보정장치
KR100890307B1 (ko) * 2006-03-07 2009-03-26 야마하 가부시키가이샤 자기 데이터 처리 디바이스
CN102879832B (zh) * 2012-09-21 2015-05-20 中国人民解放军国防科学技术大学 用于地磁要素测量系统的非对准误差校正方法
TWI582447B (zh) 2014-12-11 2017-05-11 財團法人工業技術研究院 磁場感測裝置及其磁場感測方法
CN106569509B (zh) * 2015-10-10 2020-05-19 中国石油化工股份有限公司 一种井下检波器定向系统和方法

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4305034A (en) 1979-04-09 1981-12-08 Hughes Aircraft Company Magnetic field intensity measuring device with frequency change indication
JPS58185007A (ja) 1982-04-21 1983-10-28 Toshiba Corp 磁気再生装置
US4851775A (en) 1987-07-02 1989-07-25 Precision Navigation, Incorporated Digital compass and magnetometer having a sensor coil wound on a high permeability isotropic core
US4963789A (en) 1989-05-01 1990-10-16 Conrac Scd, Inc. Method and apparatus for dynamic magnetic field neutralization
US5066891A (en) 1990-01-02 1991-11-19 Raytheon Company Magnetic field cancellation circuit
US5239264A (en) 1991-11-14 1993-08-24 Precision Navigation, Inc. Zero-offset magnetometer having coil and core sensor controlling period of an oscillator circuit
US5583401A (en) * 1992-02-07 1996-12-10 Matsushita Electric Industrial Co., Ltd. Beam landing correction apparatus for a cathode ray tube
JPH07162882A (ja) 1993-12-10 1995-06-23 Sony Corp 陰極線管装置
KR960013551B1 (ko) 1994-01-25 1996-10-07 삼성전자 주식회사 지자계 편향 자동 보정 장치
JPH08237513A (ja) * 1995-02-22 1996-09-13 Matsushita Electric Ind Co Ltd 陰極線管垂直偏向装置
US5604403A (en) 1995-06-06 1997-02-18 Aydin Corporation Color monitor magnetic shield
KR0183275B1 (ko) 1996-05-18 1999-05-15 유기범 위성통신 시스템의 사용자운용망 관리를 위한 채널 배정방법 및 그 장치
US6130505A (en) 1997-01-16 2000-10-10 Display Laboratories, Inc. Automatic alignment of cathode ray tube video displays in local magnetic fields
KR19990043936A (ko) * 1997-11-29 1999-06-15 이영옥 일라이트 모르타르의 제조방법

Also Published As

Publication number Publication date
KR20000033114A (ko) 2000-06-15
TW509883B (en) 2002-11-11
GB2344041A (en) 2000-05-24
CN1105355C (zh) 2003-04-09
DE19955497A1 (de) 2000-05-25
DE19955497B4 (de) 2004-04-01
GB2344041B (en) 2001-06-13
ID25711A (id) 2000-11-02
CN1254880A (zh) 2000-05-31
KR100296301B1 (ko) 2001-08-07
US6501222B1 (en) 2002-12-31
GB9927482D0 (en) 2000-01-19

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Legal Events

Date Code Title Description
B06A Notification to applicant to reply to the report for non-patentability or inadequacy of the application [chapter 6.1 patent gazette]
B11B Dismissal acc. art. 36, par 1 of ipl - no reply within 90 days to fullfil the necessary requirements