JPH0353078U - - Google Patents
Info
- Publication number
- JPH0353078U JPH0353078U JP11388489U JP11388489U JPH0353078U JP H0353078 U JPH0353078 U JP H0353078U JP 11388489 U JP11388489 U JP 11388489U JP 11388489 U JP11388489 U JP 11388489U JP H0353078 U JPH0353078 U JP H0353078U
- Authority
- JP
- Japan
- Prior art keywords
- wave
- parabolic
- forming means
- synthesizing
- sine
- 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.)
- Pending
Links
- 230000002194 synthesizing effect Effects 0.000 claims 6
- 238000010586 diagram Methods 0.000 description 4
Landscapes
- Details Of Television Scanning (AREA)
Description
第１図は本考案の一実施例のダイナミツクフオ
ーカス回路を示すブロツク図、第２図は第１図の
回路動作を説明する波形図、第３図は従来のダイ
ナミツクフオーカス回路を示すブロツク図、第４
図は従来のパラボラ波形と理想的な波形を比較す
る波形図である。
１１……水平パラボラ形成部、１３……垂直パ
ラボラ形成部、１５，２１……合成部、１７……
２ｆＨ正弦波形成部、１９……２ｆＶ正弦波形成
部、２４……重畳部。
Fig. 1 is a block diagram showing a dynamic focus circuit according to an embodiment of the present invention, Fig. 2 is a waveform diagram explaining the circuit operation of Fig. 1, and Fig. 3 shows a conventional dynamic focus circuit. Block diagram, 4th
The figure is a waveform diagram comparing a conventional parabolic waveform and an ideal waveform. 11... Horizontal parabola forming part, 13... Vertical parabola forming part, 15, 21... Combining part, 17...
2fH sine wave forming section, 19...2fV sine wave forming section, 24... superimposing section.
Claims (1)
出力する第１のパラボラ波形成手段と、 垂直パルスを積分して垂直周期のパラボラ波を
出力する第２のパラボラ波形成手段と、 前記第１のパラボラ波形成手段からのパラボラ
波と前記第２のパラボラ波形成手段からのパラボ
ラ波とを合成する第１の合成手段と、 水平周波数の２倍の周波数の正弦波を出力する
第１の正弦波形成手段と、 垂直周波数の２倍の周波数の正弦波を出力する
第２の正弦波形成手段と、 前記第１の正弦波形成手段からの正弦波と前記
第２の正弦波形成手段からの正弦波とを合成する
第２の合成手段と、 前記第１の合成手段からのパラボラ合成波と前
記第２の合成手段からの正弦合成波とを重畳し、
その重畳波をブラウン管のフオーカス電極に供給
する回路と、 を具備したことを特徴とするダイナミツクフオー
カス回路。[Claims for Utility Model Registration] A first parabolic wave forming means that integrates a horizontal pulse and outputs a parabolic wave with a horizontal period, and a second parabolic wave that integrates a vertical pulse and outputs a parabolic wave with a vertical period. forming means; a first synthesizing means for synthesizing the parabolic wave from the first parabolic wave forming means and the parabolic wave from the second parabolic wave forming means; and a sine wave having a frequency twice the horizontal frequency. a first sine wave forming means for outputting a sine wave with a frequency twice the vertical frequency; a sine wave forming means for outputting a sine wave having a frequency twice the vertical frequency; a second synthesizing means for synthesizing the sine wave from the sine wave forming means; superimposing the parabolic synthesized wave from the first synthesizing means and the sine synthesized wave from the second synthesizing means;
A dynamic focus circuit comprising: a circuit that supplies the superimposed wave to a focus electrode of a cathode ray tube;
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11388489U JPH0353078U (en) | 1989-09-27 | 1989-09-27 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11388489U JPH0353078U (en) | 1989-09-27 | 1989-09-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0353078U true JPH0353078U (en) | 1991-05-22 |
Family
ID=31662279
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11388489U Pending JPH0353078U (en) | 1989-09-27 | 1989-09-27 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0353078U (en) |
-
1989
- 1989-09-27 JP JP11388489U patent/JPH0353078U/ja active Pending