EP0318113A3 - Cathode ray tube display system - Google Patents

Cathode ray tube display system Download PDF

Info

Publication number
EP0318113A3
EP0318113A3 EP88202655A EP88202655A EP0318113A3 EP 0318113 A3 EP0318113 A3 EP 0318113A3 EP 88202655 A EP88202655 A EP 88202655A EP 88202655 A EP88202655 A EP 88202655A EP 0318113 A3 EP0318113 A3 EP 0318113A3
Authority
EP
European Patent Office
Prior art keywords
display system
sensor devices
ray tube
cathode ray
tube display
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.)
Withdrawn
Application number
EP88202655A
Other languages
German (de)
French (fr)
Other versions
EP0318113A2 (en
Inventor
Alan George Philips Research Laboratories Knapp
Roger Philips Research Laboratories Pook
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.)
Philips Electronics UK Ltd
Koninklijke Philips NV
Original Assignee
Philips Electronic and Associated Industries Ltd
Philips Electronics UK Ltd
Philips Gloeilampenfabrieken NV
Koninklijke Philips Electronics NV
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 Philips Electronic and Associated Industries Ltd, Philips Electronics UK Ltd, Philips Gloeilampenfabrieken NV, Koninklijke Philips Electronics NV filed Critical Philips Electronic and Associated Industries Ltd
Publication of EP0318113A2 publication Critical patent/EP0318113A2/en
Publication of EP0318113A3 publication Critical patent/EP0318113A3/en
Withdrawn legal-status Critical Current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
    • H01J29/46—Arrangements of electrodes and associated parts for generating or controlling the ray or beam, e.g. electron-optical arrangement
    • H01J29/70—Arrangements for deflecting ray or beam
    • H01J29/72—Arrangements for deflecting ray or beam along one straight line or along two perpendicular straight lines
    • H01J29/74—Deflecting by electric fields only
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J31/00—Cathode ray tubes; Electron beam tubes
    • H01J31/08—Cathode ray tubes; Electron beam tubes having a screen on or from which an image or pattern is formed, picked up, converted, or stored
    • H01J31/10—Image or pattern display tubes, i.e. having electrical input and optical output; Flying-spot tubes for scanning purposes
    • H01J31/12—Image or pattern display tubes, i.e. having electrical input and optical output; Flying-spot tubes for scanning purposes with luminescent screen
    • H01J31/123—Flat display tubes
    • H01J31/124—Flat display tubes using electron beam scanning

Landscapes

  • Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)
  • Details Of Television Scanning (AREA)

Abstract

A CRT display system in which an electron beam (32) is directed in a plane substantially parallel to a faceplate (14) carrying a phosphor screen (16) the beam (32) being deflected towards the screen.
The position of the beam is controlled to correct for deviation caused, for example, by the influence of ambient magnetic fields. Sensor devices (50, 51) periodically detect during the tube operation deviation of the beam from the desired plane and control deflector electrodes (37) which return the beam to the desired plane. Twisting and lateral shifting of the scanning beam can also be corrected. Beam position sensing is accomplished by overscanning the beam towards the sensor devices during, for example, field blanking periods, so as not to interfere with the display picture.
EP88202655A 1987-11-25 1988-11-24 Cathode ray tube display system Withdrawn EP0318113A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8727565 1987-11-25
GB8727565A GB2213029A (en) 1987-11-25 1987-11-25 Beam position control in a flat crt display system

Publications (2)

Publication Number Publication Date
EP0318113A2 EP0318113A2 (en) 1989-05-31
EP0318113A3 true EP0318113A3 (en) 1989-09-13

Family

ID=10627505

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88202655A Withdrawn EP0318113A3 (en) 1987-11-25 1988-11-24 Cathode ray tube display system

Country Status (3)

Country Link
EP (1) EP0318113A3 (en)
JP (1) JPH01167939A (en)
GB (1) GB2213029A (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2630548A (en) * 1937-12-04 1953-03-03 Muller Egon Nicolas Cathode-ray system
DE1802680A1 (en) * 1967-10-11 1969-07-17 Matsushita Electric Ind Co Ltd Cathode ray tube
GB2139860A (en) * 1983-05-09 1984-11-14 Gen Electric Co Plc Vibration compensated cathode ray tube display device
WO1985005491A1 (en) * 1984-05-11 1985-12-05 Sri International Flat panel display utilizing linear array of field emission cathodes
EP0271926A2 (en) * 1986-12-19 1988-06-22 Matsushita Electric Industrial Co., Ltd. Display device comprising a flat cathode ray tube

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH504821A (en) * 1967-11-20 1971-03-15 Eidophor Ag Device for stabilizing the grid position and size of images written line by line on separate control layers by means of cathode rays
DE3018453C2 (en) * 1980-05-14 1982-05-06 Standard Elektrik Lorenz Ag, 7000 Stuttgart Method for color television picture display and color picture tube for this purpose
GB2101396B (en) * 1981-07-08 1985-05-22 Philips Electronic Associated Flat display tube
EP0135642A1 (en) * 1983-08-05 1985-04-03 Deutsche ITT Industries GmbH Detector system for a television picture tube
EP0150903A3 (en) * 1984-01-04 1988-08-03 Carroll Touch Technology, Inc. Method and apparatus for dynamic alignment

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2630548A (en) * 1937-12-04 1953-03-03 Muller Egon Nicolas Cathode-ray system
DE1802680A1 (en) * 1967-10-11 1969-07-17 Matsushita Electric Ind Co Ltd Cathode ray tube
GB2139860A (en) * 1983-05-09 1984-11-14 Gen Electric Co Plc Vibration compensated cathode ray tube display device
WO1985005491A1 (en) * 1984-05-11 1985-12-05 Sri International Flat panel display utilizing linear array of field emission cathodes
EP0271926A2 (en) * 1986-12-19 1988-06-22 Matsushita Electric Industrial Co., Ltd. Display device comprising a flat cathode ray tube

Also Published As

Publication number Publication date
GB8727565D0 (en) 1987-12-31
JPH01167939A (en) 1989-07-03
EP0318113A2 (en) 1989-05-31
GB2213029A (en) 1989-08-02

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