GB709382A - Improvements relating to means for deflecting the ray of a cathode-ray tube - Google Patents

Improvements relating to means for deflecting the ray of a cathode-ray tube

Info

Publication number
GB709382A
GB709382A GB10638/52A GB1063852A GB709382A GB 709382 A GB709382 A GB 709382A GB 10638/52 A GB10638/52 A GB 10638/52A GB 1063852 A GB1063852 A GB 1063852A GB 709382 A GB709382 A GB 709382A
Authority
GB
United Kingdom
Prior art keywords
cathode
ray
conductors
raster
april
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
Application number
GB10638/52A
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.)
Telefunken AG
Original Assignee
Telefunken AG
Telefunken Gesellschaft fuer Drahtlose Telegraphie mbH
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 Telefunken AG, Telefunken Gesellschaft fuer Drahtlose Telegraphie mbH filed Critical Telefunken AG
Publication of GB709382A publication Critical patent/GB709382A/en
Expired 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
    • H01J29/70—Arrangements for deflecting ray or beam
    • H01J29/72—Arrangements for deflecting ray or beam along one straight line or along two perpendicular straight lines
    • H01J29/76—Deflecting by magnetic fields only
    • H01J29/762—Deflecting by magnetic fields only using saddle coils or printed windings

Landscapes

  • Details Of Television Scanning (AREA)
  • Video Image Reproduction Devices For Color Tv Systems (AREA)

Abstract

709,382. Cathode-ray tubes. TELEFUNKEN GES. FUR DRAHTLOSE TELEGRAPHIE. April 28, 1952 [April 28, 1951], No. 10638/52. Class 39(1) A magnetic deflection system for a cathode-ray tube comprises two pairs of coils having active conductors disposed parallel to the axis of the system and joined by conductors lying transverse to the axis, discrete members of magnetic material being disposed adjacent the transverse conductors to reduce astigmatism and/or pin-cushion distortion. Fig. 1 shows a side view and Fig. 2 a cross-section of one arrangement. The ferromagnetic bodies may be iron plates 18 or may be of laminated iron, wires placed alongside each other, powdered iron, or material of low conductivity such as a ferrite. The ferromagnetic bodies may complete the magnetic circuit between the end turns of the coils and thus reduce distortion of the raster when a wide angle of scanning is used, for instance 35 degrees each side of the centre; they are preferably adjutable in position and are preferably disposed in positions corresponding to the corners of the raster.
GB10638/52A 1951-04-28 1952-04-28 Improvements relating to means for deflecting the ray of a cathode-ray tube Expired GB709382A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE709382X 1951-04-28

Publications (1)

Publication Number Publication Date
GB709382A true GB709382A (en) 1954-05-19

Family

ID=6617849

Family Applications (1)

Application Number Title Priority Date Filing Date
GB10638/52A Expired GB709382A (en) 1951-04-28 1952-04-28 Improvements relating to means for deflecting the ray of a cathode-ray tube

Country Status (1)

Country Link
GB (1) GB709382A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2830213A (en) * 1955-09-08 1958-04-08 Gen Electric Deflection coil
EP0952604A1 (en) * 1998-04-24 1999-10-27 THOMSON TUBES & DISPLAYS S.A. Deflection unit for a coloured cathode-ray tube having asymmetrical coils
EP1158561A1 (en) * 2000-05-24 2001-11-28 Thomson Licensing, Inc. Asymmetric shunt for deflection yoke for reducing diagonal symmetric defects
US6958573B1 (en) 1999-12-03 2005-10-25 Thomson Licensing S.A. Asymmetric shunt for deflection yoke for reducing diagonal symmetric defects

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2830213A (en) * 1955-09-08 1958-04-08 Gen Electric Deflection coil
EP0952604A1 (en) * 1998-04-24 1999-10-27 THOMSON TUBES & DISPLAYS S.A. Deflection unit for a coloured cathode-ray tube having asymmetrical coils
FR2778016A1 (en) * 1998-04-24 1999-10-29 Thomson Tubes & Displays DEFLECTION UNIT FOR COLOR CATHODE RAY TUBES COMPRISING ASYMMETRIC COILS
US6107904A (en) * 1998-04-24 2000-08-22 Thomson Tubes & Displays Asymmetry forming arrangement in a deflection winding
US6958573B1 (en) 1999-12-03 2005-10-25 Thomson Licensing S.A. Asymmetric shunt for deflection yoke for reducing diagonal symmetric defects
EP1158561A1 (en) * 2000-05-24 2001-11-28 Thomson Licensing, Inc. Asymmetric shunt for deflection yoke for reducing diagonal symmetric defects

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