FI942361A - Förfarande och arrangemang i samband med bilskärmar, för att minska växelströmsfältet i bildskärmens omgivning - Google Patents

Förfarande och arrangemang i samband med bilskärmar, för att minska växelströmsfältet i bildskärmens omgivning Download PDF

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Publication number
FI942361A
FI942361A FI942361A FI942361A FI942361A FI 942361 A FI942361 A FI 942361A FI 942361 A FI942361 A FI 942361A FI 942361 A FI942361 A FI 942361A FI 942361 A FI942361 A FI 942361A
Authority
FI
Finland
Prior art keywords
arrangements
procedures
reduce
connection
field
Prior art date
Application number
FI942361A
Other languages
English (en)
Finnish (fi)
Other versions
FI106486B (sv
FI942361A0 (sv
Inventor
Robert Kristansson
Original Assignee
Icl Systems Ab
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 Icl Systems Ab filed Critical Icl Systems Ab
Publication of FI942361A0 publication Critical patent/FI942361A0/sv
Publication of FI942361A publication Critical patent/FI942361A/sv
Application granted granted Critical
Publication of FI106486B publication Critical patent/FI106486B/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)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Vessels, Lead-In Wires, Accessory Apparatuses For Cathode-Ray Tubes (AREA)
  • Picture Signal Circuits (AREA)
  • Transforming Electric Information Into Light Information (AREA)
  • Liquid Crystal Display Device Control (AREA)
FI942361A 1991-11-22 1994-05-20 Förfarande och arrangemang i samband med bilskärmar, för att minska växelströmsfältet i bildskärmens omgivning FI106486B (sv)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
SE9103469 1991-11-22
SE9103469A SE469456B (sv) 1991-11-22 1991-11-22 Foerfarande och anordning i en bildskaermsenhet foer att reducera elektriska vaexelfaelt i enhetens omgivning
PCT/SE1992/000794 WO1993010537A1 (en) 1991-11-22 1992-11-19 A method and an arrangement relating to visual display units, forreducing the electric alternating field in the unit surroundings
SE9200794 1992-11-19

Publications (3)

Publication Number Publication Date
FI942361A0 FI942361A0 (sv) 1994-05-20
FI942361A true FI942361A (sv) 1994-05-20
FI106486B FI106486B (sv) 2001-02-15

Family

ID=20384411

Family Applications (1)

Application Number Title Priority Date Filing Date
FI942361A FI106486B (sv) 1991-11-22 1994-05-20 Förfarande och arrangemang i samband med bilskärmar, för att minska växelströmsfältet i bildskärmens omgivning

Country Status (7)

Country Link
US (1) US5614789A (sv)
EP (1) EP0613580B1 (sv)
DE (1) DE69209517T2 (sv)
ES (1) ES2090707T3 (sv)
FI (1) FI106486B (sv)
SE (1) SE469456B (sv)
WO (1) WO1993010537A1 (sv)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
EP0568783B1 (en) * 1992-05-08 1998-09-23 Hitachi, Ltd. Cathode-ray tube apparatus and yoke
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
US5396151A (en) * 1993-06-28 1995-03-07 Apple Computer, Inc. Circuit for reducing ELF electric fields radiated from CRT devices
GB2283646A (en) * 1993-10-30 1995-05-10 Ibm Reducing electric field emission from a CRT display
GB2293299A (en) * 1994-09-15 1996-03-20 Ibm Electric field emission reduction system
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
KR100371379B1 (ko) * 1997-10-09 2003-03-26 주식회사 엘지이아이 영상표시기기의씨알티전면vlf방사전계차폐장치

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE450298B (sv) * 1984-09-24 1987-06-15 Bengt Jonsson Anordning vid for dataterminal avsedd bildskermsenhet
NO873467L (no) * 1986-12-17 1988-06-20 Jonsson Teknik Ab Anordning for avledning av elektrostatisk felt.
WO1989003631A1 (en) * 1987-10-16 1989-04-20 Norad Corporation Crt shield with double coated mesh
FI90598C (sv) * 1991-02-07 1994-02-25 Nokia Display Products Oy Förfarande och koppling för minskning av skadlig strålning förorsakat av katodstrålerör
US5151635A (en) * 1991-06-20 1992-09-29 Apple Computer, Inc. Apparatus and method for reducing the magnitude of time varying electric fields in CRT displays
DE4123565C1 (sv) * 1991-07-16 1992-09-17 Tandberg Data A/S, Oslo, No
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

Also Published As

Publication number Publication date
US5614789A (en) 1997-03-25
EP0613580B1 (en) 1996-03-27
FI106486B (sv) 2001-02-15
FI942361A0 (sv) 1994-05-20
EP0613580A1 (en) 1994-09-07
DE69209517T2 (de) 1996-10-31
DE69209517D1 (de) 1996-05-02
SE9103469D0 (sv) 1991-11-22
WO1993010537A1 (en) 1993-05-27
ES2090707T3 (es) 1996-10-16
SE469456B (sv) 1993-07-05
SE9103469L (sv) 1993-05-23

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Legal Events

Date Code Title Description
MA Patent expired