JPS6221658U - - Google Patents
Info
- Publication number
- JPS6221658U JPS6221658U JP11303285U JP11303285U JPS6221658U JP S6221658 U JPS6221658 U JP S6221658U JP 11303285 U JP11303285 U JP 11303285U JP 11303285 U JP11303285 U JP 11303285U JP S6221658 U JPS6221658 U JP S6221658U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- frequency
- wave
- synchronization signal
- pulse
- 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
- 238000006243 chemical reaction Methods 0.000 claims description 5
- 238000007493 shaping process Methods 0.000 claims description 2
- 230000001360 synchronised effect Effects 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 5
Landscapes
- Synchronizing For Television (AREA)
- Details Of Television Scanning (AREA)
Description
第１図は本考案の垂直画面位置調整回路の実施
例を示すブロツク図、第２図は第１図の回路動作
を説明する波形図、第３図は第１図の周波数―電
圧変換回路の変換特性の一例を示す図、第４図は
垂直周波数を変えた場合の第１図の回路動作を説
明する波形図である。
１……矩形波発生回路、２……積分回路、３…
…周波数―電圧変換回路、４……波形整形回路、
５……パルス幅作成回路、６……パルス作成回路
。
Figure 1 is a block diagram showing an embodiment of the vertical screen position adjustment circuit of the present invention, Figure 2 is a waveform diagram explaining the circuit operation of Figure 1, and Figure 3 is a diagram of the frequency-voltage conversion circuit of Figure 1. FIG. 4, which is a diagram showing an example of conversion characteristics, is a waveform diagram illustrating the circuit operation of FIG. 1 when the vertical frequency is changed. 1... Rectangular wave generation circuit, 2... Integrating circuit, 3...
...Frequency-voltage conversion circuit, 4...Waveform shaping circuit,
5...Pulse width creation circuit, 6...Pulse creation circuit.
Claims (1)
定のデユーテイ比を有した矩形波を発生する矩形
波発生回路と、 この回路からの矩形波を積分して鋸歯状波を作
成する積分回路と、 前記垂直同期信号の周波数を検出しその周波数
に応じた直流電圧に変換する周波数―電圧変換回
路と、 前記積分回路からの鋸歯状波を前記周波数―電
圧変換回路からの直流電圧をスレツシユレベルと
して波形整形する波形整形回路と、 この回路からの整形波信号に同期したパルスを
発生する回路であつて、そのパルス幅を可変調整
し得るパルス幅作成回路と、 この回路からのパルスの立下りに同期して前記
垂直同期信号と同一のパルス幅を有した疑似垂直
同期信号を作成して垂直偏向回路へ出力するため
のパルス作成回路とを具備したことを特徴とする
垂直画面位置調整回路。[Claims for Utility Model Registration] A rectangular wave generation circuit that receives a vertical synchronization signal and generates a rectangular wave that is synchronized with this signal and has a constant duty ratio; an integrating circuit that creates a wave; a frequency-voltage conversion circuit that detects the frequency of the vertical synchronization signal and converts it into a DC voltage according to the frequency; and a sawtooth wave from the integrating circuit that converts the sawtooth wave from the frequency-voltage conversion circuit. a waveform shaping circuit that shapes a waveform using a DC voltage as a threshold level; a pulse width generation circuit that generates a pulse synchronized with a shaped wave signal from this circuit and whose pulse width can be variably adjusted; It is characterized by comprising a pulse creation circuit for creating a pseudo vertical synchronization signal having the same pulse width as the vertical synchronization signal in synchronization with the falling edge of a pulse from the circuit and outputting it to the vertical deflection circuit. Vertical screen position adjustment circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11303285U JPS6221658U (en) | 1985-07-25 | 1985-07-25 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11303285U JPS6221658U (en) | 1985-07-25 | 1985-07-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6221658U true JPS6221658U (en) | 1987-02-09 |
Family
ID=30994450
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11303285U Pending JPS6221658U (en) | 1985-07-25 | 1985-07-25 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6221658U (en) |
-
1985
- 1985-07-25 JP JP11303285U patent/JPS6221658U/ja active Pending
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