FR2438910A1 - CONVERGENCE ADJUSTMENT ARRANGEMENT USING SMALL MAGNETIC PLATES WITH DIFFERENTIAL MOTION - Google Patents

CONVERGENCE ADJUSTMENT ARRANGEMENT USING SMALL MAGNETIC PLATES WITH DIFFERENTIAL MOTION

Info

Publication number
FR2438910A1
FR2438910A1 FR7925511A FR7925511A FR2438910A1 FR 2438910 A1 FR2438910 A1 FR 2438910A1 FR 7925511 A FR7925511 A FR 7925511A FR 7925511 A FR7925511 A FR 7925511A FR 2438910 A1 FR2438910 A1 FR 2438910A1
Authority
FR
France
Prior art keywords
differential motion
small magnetic
magnetic plates
adjustment arrangement
convergence adjustment
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.)
Granted
Application number
FR7925511A
Other languages
French (fr)
Other versions
FR2438910B1 (en
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.)
RCA Corp
Original Assignee
RCA 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
Priority claimed from US06/012,074 external-priority patent/US4245205A/en
Priority claimed from US06/018,906 external-priority patent/US4218667A/en
Application filed by RCA Corp filed Critical RCA Corp
Publication of FR2438910A1 publication Critical patent/FR2438910A1/en
Application granted granted Critical
Publication of FR2438910B1 publication Critical patent/FR2438910B1/fr
Granted 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
    • H01J29/701—Systems for correcting deviation or convergence of a plurality of beams by means of magnetic fields at least
    • H01J29/702—Convergence correction arrangements therefor
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2229/00—Details of cathode ray tubes or electron beam tubes
    • H01J2229/56—Correction of beam optics
    • H01J2229/568—Correction of beam optics using supplementary correction devices
    • H01J2229/5681—Correction of beam optics using supplementary correction devices magnetic
    • H01J2229/5684—Magnetic materials, e.g. soft iron

Landscapes

  • Video Image Reproduction Devices For Color Tv Systems (AREA)

Abstract

L'INVENTION CONCERNE UN AGENCEMENT DE CORRECTION DE CONVERGENCE POUR UN BOBINAGE DEFLECTEUR POUVANT ETRE DISPOSE AUTOUR ET SENSIBLEMENT COAXIALEMENT A UN TUBE-IMAGE, AYANT UN ENSEMBLE DE CANONS D'ELECTRONS EN LIGNE, CET AGENCEMENT AYANT DES PREMIER ET SECOND MOYENS INFLUENCANT LE CHAMP MAGNETIQUE DISPOSES CONTIGUS AU BOBINAGE. SELON L'INVENTION, LES PREMIER ET SECOND MOYENS INFLUENCANT LE CHAMP MAGNETIQUE 440A, 440B, SONT PLACES SUR DES COTES DIAMETRALEMENT OPPOSES DE L'AXE; DES MOYENS DE MONTAGE SONT PREVUS POUR MAINTENIR UNE SEPARATION FIXE ENTRE LE PREMIER MOYEN 440A ET LE SECOND 440B ET POUR PERMETTRE EN AJUSTEMENT DIFFERENTIEL DES PREMIER ET SECOND MOYENS VERS L'AXE 16. L'INVENTION S'APPLIQUE NOTAMMENT A LA TELEVISION EN COULEURS.THE INVENTION RELATES TO A CONVERGENCE CORRECTION ARRANGEMENT FOR A DEFLECTOR COIL THAT CAN BE ARRANGED AROUND AND SENSITIVELY COAXIALLY WITH AN IMAGE TUBE, HAVING A SET OF ELECTRON BARRELS IN LINE, THIS ARRANGEMENT HAVING FIRST AND SECOND MEANS INFLUENCING THE MAGNET ARRANGEMENTS CONTIGUOUS TO WINDING. ACCORDING TO THE INVENTION, THE FIRST AND SECOND MEANS INFLUENCING THE MAGNETIC FIELD 440A, 440B, ARE PLACED ON SIDES DIAMETRALLY OPPOSED FROM THE AXIS; MOUNTING MEANS ARE PROVIDED TO MAINTAIN A FIXED SEPARATION BETWEEN THE FIRST MEANS 440A AND THE SECOND 440B AND TO ALLOW DIFFERENTIAL ADJUSTMENT OF THE FIRST AND SECOND MEANS TOWARDS AXIS 16. THE INVENTION APPLIES IN PARTICULAR TO COLOR TELEVISION.

FR7925511A 1978-10-13 1979-10-12 CONVERGENCE ADJUSTMENT ARRANGEMENT USING SMALL MAGNETIC PLATES WITH DIFFERENTIAL MOTION Granted FR2438910A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US95100178A 1978-10-13 1978-10-13
US06/012,074 US4245205A (en) 1979-02-14 1979-02-14 Convergence adjustment arrangement using magnetic tabs with differential motion and rotary drive
US06/018,906 US4218667A (en) 1978-10-13 1979-03-09 Convergence adjustment arrangement using magnetic tabs with differential motion

Publications (2)

Publication Number Publication Date
FR2438910A1 true FR2438910A1 (en) 1980-05-09
FR2438910B1 FR2438910B1 (en) 1983-08-19

Family

ID=27359567

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7925511A Granted FR2438910A1 (en) 1978-10-13 1979-10-12 CONVERGENCE ADJUSTMENT ARRANGEMENT USING SMALL MAGNETIC PLATES WITH DIFFERENTIAL MOTION

Country Status (5)

Country Link
DE (1) DE2941431C2 (en)
FR (1) FR2438910A1 (en)
GB (1) GB2034108B (en)
IT (1) IT1193827B (en)
PL (1) PL132263B1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0975003B1 (en) * 1998-07-16 2003-01-29 Matsushita Display Devices (Germany) GmbH Colour television or colour monitor with flat screen

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3605053A (en) * 1969-08-27 1971-09-14 Tracor Convergence- and purity-adjusting device for color television picture tube
FR2141924A1 (en) * 1971-06-18 1973-01-26 Matsushita Electric Ind Co Ltd
US3942146A (en) * 1974-11-21 1976-03-02 General Instrument Corporation Purity adjusting device for slotted mask in-line color picture tubes

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3290533A (en) * 1964-04-23 1966-12-06 Rca Corp Conjointly-movable cam-actuated support means for magnets in color kinescopes
US3639796A (en) * 1968-03-11 1972-02-01 Sony Corp Color convergence system having elongated magnets perpendicular to plane of plural beams
DE2506268C2 (en) * 1975-02-14 1977-01-20 Standard Elektrik Lorenz Ag DEFLECTION SYSTEM FOR COLOR TELEVISION TUBES

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3605053A (en) * 1969-08-27 1971-09-14 Tracor Convergence- and purity-adjusting device for color television picture tube
FR2141924A1 (en) * 1971-06-18 1973-01-26 Matsushita Electric Ind Co Ltd
US3942146A (en) * 1974-11-21 1976-03-02 General Instrument Corporation Purity adjusting device for slotted mask in-line color picture tubes

Also Published As

Publication number Publication date
DE2941431A1 (en) 1980-04-17
IT7926354A0 (en) 1979-10-09
GB2034108A (en) 1980-05-29
DE2941431C2 (en) 1984-02-16
FR2438910B1 (en) 1983-08-19
PL132263B1 (en) 1985-02-28
PL218934A1 (en) 1980-08-11
GB2034108B (en) 1982-11-03
IT1193827B (en) 1988-08-24

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Legal Events

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