DE69022731T2 - Kathodenstrahlröhrenanzeigeapparat. - Google Patents

Kathodenstrahlröhrenanzeigeapparat.

Info

Publication number
DE69022731T2
DE69022731T2 DE69022731T DE69022731T DE69022731T2 DE 69022731 T2 DE69022731 T2 DE 69022731T2 DE 69022731 T DE69022731 T DE 69022731T DE 69022731 T DE69022731 T DE 69022731T DE 69022731 T2 DE69022731 T2 DE 69022731T2
Authority
DE
Germany
Prior art keywords
display apparatus
ray tube
cathode ray
tube display
cathode
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 - Fee Related
Application number
DE69022731T
Other languages
English (en)
Other versions
DE69022731D1 (de
Inventor
Kenneth George Smith
John Beeteson
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.)
International Business Machines Corp
Original Assignee
International Business Machines Corp
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 International Business Machines Corp filed Critical International Business Machines Corp
Application granted granted Critical
Publication of DE69022731D1 publication Critical patent/DE69022731D1/de
Publication of DE69022731T2 publication Critical patent/DE69022731T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • H01J29/003—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
    • H01J2229/0015—Preventing or cancelling fields leaving the enclosure

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Video Image Reproduction Devices For Color Tv Systems (AREA)
DE69022731T 1990-11-27 1990-11-27 Kathodenstrahlröhrenanzeigeapparat. Expired - Fee Related DE69022731T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP90312872A EP0487796B1 (de) 1990-11-27 1990-11-27 Kathodenstrahlröhrenanzeigeapparat

Publications (2)

Publication Number Publication Date
DE69022731D1 DE69022731D1 (de) 1995-11-02
DE69022731T2 true DE69022731T2 (de) 1996-05-02

Family

ID=8205624

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69022731T Expired - Fee Related DE69022731T2 (de) 1990-11-27 1990-11-27 Kathodenstrahlröhrenanzeigeapparat.

Country Status (7)

Country Link
US (2) US5563476A (de)
EP (1) EP0487796B1 (de)
JP (1) JPH0775150B2 (de)
DE (1) DE69022731T2 (de)
DK (1) DK0487796T3 (de)
FI (1) FI915348A (de)
NO (1) NO914254L (de)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0487796B1 (de) * 1990-11-27 1995-09-27 International Business Machines Corporation Kathodenstrahlröhrenanzeigeapparat
WO1996023315A1 (en) * 1995-01-24 1996-08-01 International Business Machines Corporation Cathode ray tube display apparatus with reduced stray magnetic fields
KR100190160B1 (ko) * 1995-10-27 1999-06-01 윤종용 디스플레이 기기의 전계 차폐 회로
US5986406A (en) * 1997-02-15 1999-11-16 Lg Electronics Inc. Electric field noise eliminating circuit in a video display appliance
TW423702U (en) * 1998-07-21 2001-02-21 Koninkl Philips Electronics Nv Cathode ray tube having a deflection unit
US6741296B1 (en) * 2000-01-04 2004-05-25 International Business Machines Corporation Multi-hemisphere color CRT

Family Cites Families (14)

* 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
JPS59186490A (ja) * 1983-04-08 1984-10-23 Hitachi Ltd コンバ−ゼンス装置
US4581563A (en) * 1983-11-28 1986-04-08 International Business Machines Corporation Variable format controls CRT raster
DE3440024A1 (de) * 1984-11-02 1986-05-07 Deutsche Thomson-Brandt Gmbh, 7730 Villingen-Schwenningen Schaltungsanordnung fuer die vertikalablenkung von elektronenstrahlen in fernsehbildroehren
KR900001503B1 (ko) * 1985-09-13 1990-03-12 미쓰비시전기 주식회사 불요복사 방지장치
SE459054C (sv) * 1986-03-07 1992-08-17 Philips Norden Ab Foerfarande foer reducering av magnetiskt laeckfaelt samt anordning foer genomfoerande av foerfarandet
US4853588A (en) * 1986-09-05 1989-08-01 Denki Onkyo Co., Ltd. Deflection yoke apparatus with means for reducing unwanted radiation
JPH0163057U (de) * 1987-10-17 1989-04-24
US4864192A (en) * 1987-11-09 1989-09-05 General Electric Company CRT magnetic field compensation
JPH0186047U (de) * 1987-11-27 1989-06-07
EP0327161B1 (de) * 1988-02-01 1994-01-05 Koninklijke Philips Electronics N.V. Bildwiedergabeanordnung mit einem Ausgleichsspulenbestückten, magnetisierbaren Kernmittel
JPH02148543A (ja) * 1988-11-29 1990-06-07 Mitsubishi Electric Corp 陰極線管デイスプレイ装置
JPH02223138A (ja) * 1989-02-23 1990-09-05 Tdk Corp 偏向ヨークの漏洩磁束低減装置
EP0487796B1 (de) * 1990-11-27 1995-09-27 International Business Machines Corporation Kathodenstrahlröhrenanzeigeapparat

Also Published As

Publication number Publication date
US5734234A (en) 1998-03-31
EP0487796A1 (de) 1992-06-03
JPH0775150B2 (ja) 1995-08-09
JPH06103923A (ja) 1994-04-15
EP0487796B1 (de) 1995-09-27
NO914254L (no) 1992-05-29
FI915348A0 (fi) 1991-11-13
US5563476A (en) 1996-10-08
DE69022731D1 (de) 1995-11-02
FI915348A (fi) 1992-05-28
DK0487796T3 (da) 1995-12-18
NO914254D0 (no) 1991-10-30

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee