JPS60145766U

JPS60145766U - Deflection distortion correction circuit

Info

Publication number: JPS60145766U
Application number: JP3354284U
Authority: JP
Inventors: 亀本　一廣
Original assignee: 株式会社東芝
Priority date: 1984-03-08
Filing date: 1984-03-08
Publication date: 1985-09-27

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図は従来の水平出力、偏向回路の回路図、第２図は
第１図の水平出力、偏向回路の高圧発生回路部分の等価
回路図、第３図は第１゛図あるいは第２図で示した高圧
発生回路の負荷レギュレーション特性の例を示す特性図
、第４図は第１図ないし第３図に示した回路あるいは特
性で示される受像管における高圧負荷電流の変化に対す
る高圧変動の例を示す図、第５図ａは受像管上番′二自
と黒の絵柄が出た場合の例を示す図、第５［ｆｆ１ｂは
第５図ａの白い部分で水平偏向歪を生じた場合の例を示
す図、第６図ａないし第６図Ｃから第８図ａないし第８
図Ｃはそれぞれ絵柄に対する高圧変動量と水平偏向歪の
例を示す図、第９図はこの考案の水平偏向歪補正回路の
一実施例を示す図、第１０図はこの考案の偏向歪補正回
路の各部動作波形を示す図である。１・・・・・・水平発振水平ドライブ回路、２・・・・
・・水平出力トランジスタ、３・・・・・・ダングダイ
オード、４・・・・・・共振コンデンサ、５・・・・・
・水平偏向コイル、６・・・・・・８字補正コンデンサ
、７・・・・・・フライバックトランス、９・・・・・
・高圧整流ダイオード、１０・・・・・・平滑コンデン
サ、１１・・・・・・受像管電流制限回路、１２・・・
・・・受像管、１３・・・・・・映像処理回路＞　１４
〜１６・・・・・・受像管カソードドライブ回路、２０
・・・・・・カッニド電流検出回路、２１・・・・・・
積分器、２２・・・・・・レベル調整回路、２４・・・
・・・パラボラ増発生回路、２５・・・・・・バッファ
段、２６・・・・・・パラボラ増幅器、２８・・・・・
・グイオニドモジュレーション回路。春　　　　　　　　　　　− 第２図０　　　　　１ＨFigure 1 is a circuit diagram of a conventional horizontal output and deflection circuit, Figure 2 is an equivalent circuit diagram of the high voltage generation circuit portion of the horizontal output and deflection circuit in Figure 1, and Figure 3 is a diagram of Figure 1 or 2. 4 is a characteristic diagram showing an example of the load regulation characteristics of the high voltage generation circuit shown in FIG. Figure 5a is a diagram showing an example when a picture tube upper number '2' and a black pattern appear; Figure 5 [ff1b is a diagram showing a case where horizontal deflection distortion occurs in the white part of Figure 5a. Figures 6a to 6c to 8a to 8c show examples of
Figure C is a diagram showing an example of the amount of high voltage fluctuation and horizontal deflection distortion for each picture, Figure 9 is a diagram showing an embodiment of the horizontal deflection distortion correction circuit of this invention, and Figure 10 is a diagram of the deflection distortion correction circuit of this invention. It is a figure which shows the operation waveform of each part. 1...Horizontal oscillation horizontal drive circuit, 2...
...Horizontal output transistor, 3...Dang diode, 4...Resonance capacitor, 5...
・Horizontal deflection coil, 6... Figure 8 correction capacitor, 7... Flyback transformer, 9...
・High voltage rectifier diode, 10... Smoothing capacitor, 11... Picture tube current limiting circuit, 12...
. . . picture tube, 13 . . . video processing circuit > 14
~16... Picture tube cathode drive circuit, 20
...... Cannidic current detection circuit, 21...
Integrator, 22...Level adjustment circuit, 24...
... Parabola increase generation circuit, 25 ... Buffer stage, 26 ... Parabola amplifier, 28 ...
・Guionide modulation circuit. Spring - Figure 2 0 1H

Claims

[Scope of utility model registration request]

a picture tube cathode drive circuit, a current detection circuit for detecting the cathode current of the picture tube, a first means for integrating and level-adjusting the output voltage of the current detection circuit, and a horizontal deflection coil connected in series with the a horizontal deflection circuit including a correction capacitor; a means for generating a parabola signal with a vertical period; and a signal obtained by superimposing the output of the first means on the parabola signal to parabola modulate the horizontal deflection current flowing through the horizontal deflection coil. A deflection distortion correction circuit consisting of a left and right pink john distortion correction circuit that corrects left and right pink john distortion.