JPS59180530U

JPS59180530U - Sawtooth wave generation circuit

Info

Publication number: JPS59180530U
Application number: JP7455883U
Authority: JP
Inventors: 純雄前之園
Original assignee: 日本電気株式会社
Priority date: 1983-05-20
Filing date: 1983-05-20
Publication date: 1984-12-03

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ＣＲＴ表示装置の偏向系を示すブロック
図、第２図ａ、　　ｂは上記従来の偏向系に゛よる掃引
波形による歪を示す波形図、第３図ａ。ｂは、従来及び本考案の掃引波形を比較する波形図、第
４図は本考案鋸歯状波発生回路の一実施例を示すブロッ
ク図、第５図ａ、　　ｂは本考案発生回路の出力波形と
これを入力した偏向場幅部出力波形を示す波形図、第６
図はビデオを等間隔に入力した場合における従来回路と
本実施例適用例とのビデオ表示歪の比較図である。１・・・掃引発生器、２・・・偏向増幅器、３・・・偏
向コイル、４・・・データ発生部、５・・・加算部、６
・・・Ｄ／Ａ変換部。FIG. 1 is a block diagram showing a deflection system of a conventional CRT display device, FIGS. 2a and 2b are waveform diagrams showing distortion due to a sweep waveform caused by the conventional deflection system, and FIG. 3a. Fig. 4 is a block diagram showing an embodiment of the sawtooth wave generating circuit of the present invention, and Fig. 5 a and b are output waveforms of the generating circuit of the present invention. A waveform diagram showing the output waveform of the deflection field width section that inputs this, No. 6
The figure is a comparison diagram of video display distortion between the conventional circuit and the application example of this embodiment when video is input at regular intervals. DESCRIPTION OF SYMBOLS 1... Sweep generator, 2... Deflection amplifier, 3... Deflection coil, 4... Data generator, 5... Adder, 6
...D/A conversion section.

Claims

[Claim for Utility Model Registration] In a sawtooth wave generation circuit that is installed in a deflection system that drives a deflection coil of a CRT display device and generates a sweep input wave, based on data stored in advance corresponding to a distance selection switch. a data generator that generates and outputs sawtooth wave data;
It is equipped with an addition section that adds offset position correction data to the data from the data generation section, and a D/A conversion section that converts the corrected data from digital to analog. A sawtooth wave generation circuit characterized in that it has a configuration that corrects response delay by lowering the response delay.