JPS58121464U

JPS58121464U - Raster distortion correction device for flat cathode ray tubes

Info

Publication number: JPS58121464U
Application number: JP1887282U
Authority: JP
Inventors: 馬場　恭治; 原　和文
Original assignee: ソニー株式会社
Priority date: 1982-02-12
Filing date: 1982-02-12
Publication date: 1983-08-18
Also published as: JPH0145171Y2

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

第１図は扁平型陰極線管の一例の横断面図、第２図はそ
の縦断面図、第３図はそのビームの飛跡を説明するため
の断面図、第４図は電子ビームの水平走査軌跡の輪郭を
示す図、第５図は従来の扁　　　−平型陰極線管のラス
ク歪補正装置の一例を示す回路図、第６図は波形図、第
７図及び第８図は第５図の説明に供する水平走査軌跡の
輪郭を示す図、第９図及び第１０図は本考案の各実施例
を示す回路図である。゛　３は扁平管体、４はネック管、５は電子銃、６はタ
ーゲット電極、７は螢光面、８は背面電極、９は主偏向
系、１０は垂直偏向手段、１１は水平偏向手段、２０は
水平出力回路、２４は水平偏向コイル、２６及び４０は
振幅変調器、２９は垂直周期の鋸歯状波信号形成回路、
３３は第１の可変手段、３８及び３８′は第２の可変手
段である。第３図ｅ４ン２り −′　　　Ｘト− ｆｌａａ３　　幻　？ｇ　　　−ａｍ補正昭５７．５．１１− 実用新案登録請求の範囲を次のよ−うに補正する。 ■実用新案登録請求の範回Figure 1 is a cross-sectional view of an example of a flat cathode ray tube, Figure 2 is a longitudinal cross-sectional view thereof, Figure 3 is a cross-sectional view to explain the trajectory of the beam, and Figure 4 is the horizontal scanning trajectory of the electron beam. 5 is a circuit diagram showing an example of a conventional rask distortion correction device for a flat cathode ray tube, FIG. 6 is a waveform diagram, and FIGS. 7 and 8 are explanations of FIG. 5. 9 and 10 are circuit diagrams showing each embodiment of the present invention.゛ 3 is a flat tube body, 4 is a neck tube, 5 is an electron gun, 6 is a target electrode, 7 is a fluorescent surface, 8 is a back electrode, 9 is a main deflection system, 10 is a vertical deflection means, 11 is a horizontal deflection means , 20 is a horizontal output circuit, 24 is a horizontal deflection coil, 26 and 40 are amplitude modulators, 29 is a vertical period sawtooth wave signal forming circuit,
33 is a first variable means, and 38 and 38' are second variable means. Figure 3 e4-2-'X-t-fla a3 phantom? g-am Amendment May 11, 1982- The scope of the claims for utility model registration is amended as follows. ■ Time limit for requesting utility model registration

Claims

[Scope of utility model registration request]

An electron gun is arranged at a position extending in the plane direction of the fluorescent surface, and a back electrode is provided opposite to the fluorescent surface, and a main deflection system for the electron beam from the electron gun is formed between the two. and a vertical deflection system that deflects the electron beam in a direction perpendicular to the fluorescent surface and a vertical deflection system that deflects the electron beam in a direction parallel to the fluorescent surface at a position between the electron gun and the main deflection system. A flat cathode ray tube comprising a horizontal deflection system, a modulator that modulates the amplitude of the horizontal deflection current with a sawtooth wave signal with a vertical period superimposed on a direct current, and an alternating current of the sawtooth wave signal with a vertical period. a first variable means for varying the level; and a second variable means for varying the DC level of the vertically periodic sawtooth wave signal superimposed on the DC; A rask distortion correction device for a flat cathode ray tube, which corrects trapezoidal distortion of the horizontal scanning locus of the electron beam by interlocking and varying the values.