FI910586A0 - Förfarande och koppling för minskning av skadlig strålning förorsakat av katodstrålerör - Google Patents

Förfarande och koppling för minskning av skadlig strålning förorsakat av katodstrålerör

Info

Publication number
FI910586A0
FI910586A0 FI910586A FI910586A FI910586A0 FI 910586 A0 FI910586 A0 FI 910586A0 FI 910586 A FI910586 A FI 910586A FI 910586 A FI910586 A FI 910586A FI 910586 A0 FI910586 A0 FI 910586A0
Authority
FI
Finland
Prior art keywords
coupling
ray tube
cathode ray
reducing harmful
radiation caused
Prior art date
Application number
FI910586A
Other languages
English (en)
Finnish (fi)
Other versions
FI90598B (sv
FI90598C (sv
FI910586A (sv
Inventor
Hannu Haapakoski
Original Assignee
Salcomp Oy
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 Salcomp Oy filed Critical Salcomp Oy
Priority to FI910586A priority Critical patent/FI90598C/sv
Publication of FI910586A0 publication Critical patent/FI910586A0/sv
Priority to DE69218988T priority patent/DE69218988T2/de
Priority to EP92300885A priority patent/EP0498589B1/en
Priority to US07/832,530 priority patent/US5218270A/en
Publication of FI910586A publication Critical patent/FI910586A/sv
Publication of FI90598B publication Critical patent/FI90598B/sv
Application granted granted Critical
Publication of FI90598C publication Critical patent/FI90598C/sv

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N3/00—Scanning details of television systems; Combination thereof with generation of supply voltages
    • H04N3/10—Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical
    • H04N3/16—Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical by deflecting electron beam in cathode-ray tube, e.g. scanning corrections
    • H04N3/18—Generation of supply voltages, in combination with electron beam deflecting
    • H04N3/185—Maintaining dc voltage constant
    • 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)
  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Details Of Television Scanning (AREA)
FI910586A 1991-02-07 1991-02-07 Förfarande och koppling för minskning av skadlig strålning förorsakat av katodstrålerör FI90598C (sv)

Priority Applications (4)

Application Number Priority Date Filing Date Title
FI910586A FI90598C (sv) 1991-02-07 1991-02-07 Förfarande och koppling för minskning av skadlig strålning förorsakat av katodstrålerör
DE69218988T DE69218988T2 (de) 1991-02-07 1992-02-03 Verfahren und Schaltungsanordnung zum Reduzieren schädlicher Strahlung einer Kathodenstrahlröhre
EP92300885A EP0498589B1 (en) 1991-02-07 1992-02-03 A method and a coupling for decreasing the detrimental radiation caused by a cathode-ray tube
US07/832,530 US5218270A (en) 1991-02-07 1992-02-07 Method and a coupling for decreasing the detrimental radiation caused by a cathode-ray tube

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI910586A FI90598C (sv) 1991-02-07 1991-02-07 Förfarande och koppling för minskning av skadlig strålning förorsakat av katodstrålerör
FI910586 1991-02-07

Publications (4)

Publication Number Publication Date
FI910586A0 true FI910586A0 (sv) 1991-02-07
FI910586A FI910586A (sv) 1992-08-08
FI90598B FI90598B (sv) 1993-11-15
FI90598C FI90598C (sv) 1994-02-25

Family

ID=8531873

Family Applications (1)

Application Number Title Priority Date Filing Date
FI910586A FI90598C (sv) 1991-02-07 1991-02-07 Förfarande och koppling för minskning av skadlig strålning förorsakat av katodstrålerör

Country Status (4)

Country Link
US (1) US5218270A (sv)
EP (1) EP0498589B1 (sv)
DE (1) DE69218988T2 (sv)
FI (1) FI90598C (sv)

Families Citing this family (16)

* 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
US5180947A (en) * 1991-04-23 1993-01-19 Alliant Techsystems Inc. Shielded cathode ray tube
DE4123565C1 (sv) * 1991-07-16 1992-09-17 Tandberg Data A/S, Oslo, No
SE469456B (sv) * 1991-11-22 1993-07-05 Nokia Data Ab Foerfarande och anordning i en bildskaermsenhet foer att reducera elektriska vaexelfaelt i enhetens omgivning
US5162706A (en) * 1992-04-17 1992-11-10 Tzu-Chiang Wu Anti-horizontal-impulse cathode-ray-tube driving system
JP3068710B2 (ja) * 1992-05-08 2000-07-24 株式会社日立製作所 水平偏向回路
US5689157A (en) * 1992-05-08 1997-11-18 Hitachi, Ltd. Cathode-ray tube display unit in which unwanted radiant electric field from face plate of cathode-ray tube is decreased
DE69321156T2 (de) * 1992-05-08 1999-06-02 Hitachi, Ltd., Tokio/Tokyo Kathodenstrahlröhre mit Ablenkjoch
US5285132A (en) * 1992-06-25 1994-02-08 U.S. Philips Corporation Display device
SE500865C2 (sv) * 1993-02-02 1994-09-19 Icl Systems Ab Anordning och förfarande vid en bildskärmsenhet för att reducera elektriska växelfält i enhetens omgivning
GB2279216A (en) * 1993-06-15 1994-12-21 Ibm Cathode ray tube display with cancellation of electric field emission
US5396151A (en) * 1993-06-28 1995-03-07 Apple Computer, Inc. Circuit for reducing ELF electric fields radiated from CRT devices
TW395550U (en) * 1994-10-19 2000-06-21 Hitachi Ltd Cathode-ray tube display unit in which the unwanted radiant electric field from the face plate of cathode-ray tube is decreased
JP3609174B2 (ja) * 1995-10-31 2005-01-12 株式会社日立メディアエレクトロニクス フライバックトランス
JPH09233355A (ja) * 1996-02-27 1997-09-05 Totoku Electric Co Ltd 不要電界の低減方法
US20010040434A1 (en) * 1998-07-23 2001-11-15 Lawrence L. Nelson Free electron condensation voltage gain device

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE309701B (sv) * 1965-07-01 1969-03-31 Blomqvists Verkstads Ab
DE2163772A1 (de) * 1971-12-22 1973-07-05 Licentia Gmbh Schaltung zur verminderung der stoerstrahlung eines elektrischen leiters, insbesondere in einem fernsehempfaenger
DE2239132A1 (de) * 1972-08-09 1974-02-21 Licentia Gmbh Schaltung fuer einen fernsehempfaenger zur verringerung der auswirkung von stoerimpulsen auf die bildwiedergaberoehre
DE2445003C3 (de) * 1974-09-20 1978-12-14 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Fernsehempfänger mit Mitteln zur Verringerung der Zeilenstörstrahlung und Verfahren zur Optimierung der Mittel
US4045742A (en) * 1976-04-12 1977-08-30 Zenith Radio Corporation High voltage shutdown circuit responsive to excessive beam current and high voltage
JPS5380129A (en) * 1976-12-24 1978-07-15 Matsushita Electric Ind Co Ltd Protection cuicuit
JPS5595465A (en) * 1979-01-11 1980-07-19 Matsushita Electric Ind Co Ltd Protective device of television receiver
JPS566674A (en) * 1979-06-27 1981-01-23 Hitachi Ltd Flyback transformer
JPS60106273A (ja) * 1983-11-15 1985-06-11 Matsushita Electric Ind Co Ltd テレビジョン受像機のｘ線保護回路
JPS60218693A (ja) * 1984-04-13 1985-11-01 三菱電機株式会社 デイスプレイ装置
US4823248A (en) * 1987-04-07 1989-04-18 Murata Manufacturing Co., Ltd. High voltage generator

Also Published As

Publication number Publication date
EP0498589A3 (en) 1992-10-07
US5218270A (en) 1993-06-08
FI90598B (sv) 1993-11-15
EP0498589A2 (en) 1992-08-12
FI90598C (sv) 1994-02-25
DE69218988D1 (de) 1997-05-22
FI910586A (sv) 1992-08-08
DE69218988T2 (de) 1997-07-24
EP0498589B1 (en) 1997-04-16

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Owner name: NOKIA DISPLAY PRODUCTS OY