GB1436925A - Colour picture tubes containing an in-line type electron gun assembly - Google Patents

Colour picture tubes containing an in-line type electron gun assembly

Info

Publication number
GB1436925A
GB1436925A GB809574A GB809574A GB1436925A GB 1436925 A GB1436925 A GB 1436925A GB 809574 A GB809574 A GB 809574A GB 809574 A GB809574 A GB 809574A GB 1436925 A GB1436925 A GB 1436925A
Authority
GB
United Kingdom
Prior art keywords
pair
tubes
arrangement
dynamic convergence
electron gun
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
GB809574A
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.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
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 Hitachi Ltd filed Critical Hitachi Ltd
Publication of GB1436925A publication Critical patent/GB1436925A/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
    • H01J29/701—Systems for correcting deviation or convergence of a plurality of beams by means of magnetic fields at least
    • H01J29/707—Arrangements intimately associated with parts of the gun and co-operating with external magnetic excitation devices

Abstract

1436925 Colour television tubes HITACHI Ltd 22 Feb 1974 [4 May 1973] 8095/74 Heading H1D The static and dynamic convergence arrangement of a colour television tube having three in-line guns comprises a polepiece assembly having first and second pairs of magnetic segments 3 and 6 arranged at right angles in a common plane, with the segiments of pair 6 spaced apart in the vertical deflection direction. As shown in Fig. 5, the assembly is mounted in a non-magnetic cylindrical cage 5 which, together with the supporting members 4 may be of stainless steel, pair 3 being convex towards the tube axis, and pair 6 having vertically aligned control webs 6b. The use of the arrangement permits vertical dynamic convergence to be dispensed with, and horizontal dynamic convergence to be effected by using a magnetizing current (Fig. 8, not shown) of symmetrical waveform, e.g. parabolic. Reference is made to the use of the arrangement in wide-angle deflection tubes, and in tubes utilizing deflection coils of saddle form.
GB809574A 1973-05-04 1974-02-22 Colour picture tubes containing an in-line type electron gun assembly Expired GB1436925A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4911273A JPS5522907B2 (en) 1973-05-04 1973-05-04

Publications (1)

Publication Number Publication Date
GB1436925A true GB1436925A (en) 1976-05-26

Family

ID=12821973

Family Applications (1)

Application Number Title Priority Date Filing Date
GB809574A Expired GB1436925A (en) 1973-05-04 1974-02-22 Colour picture tubes containing an in-line type electron gun assembly

Country Status (6)

Country Link
US (1) US3899761A (en)
JP (1) JPS5522907B2 (en)
DE (1) DE2408994C3 (en)
FR (1) FR2228293B1 (en)
GB (1) GB1436925A (en)
IT (1) IT1009332B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2202082A (en) * 1986-12-27 1988-09-14 Sony Corp Cathode ray tubes

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5615102B2 (en) * 1974-10-14 1981-04-08
JPS5475215A (en) * 1977-11-29 1979-06-15 Toshiba Corp Deflecting unit
NL188484C (en) * 1978-02-06 1992-07-01 Philips Nv DEFLECTOR FOR COLOR TELEVISION IMAGE TUBES.
US4232283A (en) * 1979-03-27 1980-11-04 Rca Corporation Electron beam moving apparatus for a color cathode ray tube
JPS573352A (en) * 1980-06-06 1982-01-08 Denki Onkyo Co Ltd Deflection yoke
US4305055A (en) * 1980-06-24 1981-12-08 Rca Corporation Television display system incorporating a coma corrected deflection yoke
EP0090107B1 (en) * 1982-03-31 1986-06-18 International Business Machines Corporation Convergence unit for in-line colour cathode ray tube
JPS59196538A (en) * 1983-04-20 1984-11-07 Matsushita Electric Ind Co Ltd Deflection yoke
NL8401444A (en) * 1984-05-07 1985-12-02 Philips Nv PICTURE TUBE.
DE3665111D1 (en) * 1985-09-27 1989-09-21 Hitachi Ltd Convergence correcting device capable of coma correction for use in a cathode ray tube having in-line electron guns
TR200400947T4 (en) 2000-09-12 2004-07-21 Thomson Licensing, S.A. Apparatus for rectifying static electron beam descent

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1046672B (en) * 1956-02-04 1958-12-18 Telefunken Gmbh Arrangement for centering the electron beams in a picture tube for displaying color television programs
US3325675A (en) * 1964-08-05 1967-06-13 Paramount Pictures Corp Three in-line gun magnetic convergence system
US3840765A (en) * 1972-09-26 1974-10-08 Tokyo Shibaura Electric Co Shielding member between only the control and side beams in a color cathode ray tube

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2202082A (en) * 1986-12-27 1988-09-14 Sony Corp Cathode ray tubes
US4857796A (en) * 1986-12-27 1989-08-15 Sony Corporation Cathode-ray tube with electrostatic convergence means and magnetic misconvergence correcting mechanism
GB2202082B (en) * 1986-12-27 1990-09-19 Sony Corp Cathode ray tubes

Also Published As

Publication number Publication date
JPS5522907B2 (en) 1980-06-19
DE2408994C3 (en) 1980-05-14
US3899761A (en) 1975-08-12
DE2408994B2 (en) 1979-08-16
DE2408994A1 (en) 1974-11-14
JPS50712A (en) 1975-01-07
FR2228293A1 (en) 1974-11-29
FR2228293B1 (en) 1977-09-23
IT1009332B (en) 1976-12-10

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
435 Patent endorsed 'licences of right' on the date specified (sect. 35/1949)
PCNP Patent ceased through non-payment of renewal fee