JPH0197671U - - Google Patents
Info
- Publication number
- JPH0197671U JPH0197671U JP19231487U JP19231487U JPH0197671U JP H0197671 U JPH0197671 U JP H0197671U JP 19231487 U JP19231487 U JP 19231487U JP 19231487 U JP19231487 U JP 19231487U JP H0197671 U JPH0197671 U JP H0197671U
- Authority
- JP
- Japan
- Prior art keywords
- focus
- ray tube
- video signal
- cathode ray
- superimposing
- 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
- 238000010586 diagram Methods 0.000 description 5
Landscapes
- Details Of Television Scanning (AREA)
Description
第１図は本考案を実施したフオーカス回路の回
路図であり、第２図はその要部の信号波形図であ
る。第３図は従来例の回路図である。第４図は他
の従来例の回路図であり、第５図はその信号波形
図である。
１…フライバツクトランス、２…陰極線管、３
…フオーカス電極、Ｒ１，Ｒ２，Ｒ３…抵抗、Ｑ
…トランジスタ、ＷＰ…映像信号の白ピーク。
FIG. 1 is a circuit diagram of a focus circuit embodying the present invention, and FIG. 2 is a signal waveform diagram of the main part thereof. FIG. 3 is a circuit diagram of a conventional example. FIG. 4 is a circuit diagram of another conventional example, and FIG. 5 is a signal waveform diagram thereof. 1...Flyback transformer, 2...Cathode ray tube, 3
... Focus electrode, R 1 , R 2 , R 3 ... Resistance, Q
...Transistor, WP...White peak of video signal.
Claims (1)
カス電圧に、白ピーク時のブルーミングを防止す
るように映像信号を重畳する手段を設けたことを
特徴とするテレビジヨン受像機のフオーカス回路
。 A focus circuit for a television receiver, comprising means for superimposing a video signal on a focus voltage applied to a focus electrode of a cathode ray tube so as to prevent blooming at a white peak.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19231487U JPH0197671U (en) | 1987-12-18 | 1987-12-18 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19231487U JPH0197671U (en) | 1987-12-18 | 1987-12-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0197671U true JPH0197671U (en) | 1989-06-29 |
Family
ID=31483179
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19231487U Pending JPH0197671U (en) | 1987-12-18 | 1987-12-18 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0197671U (en) |
-
1987
- 1987-12-18 JP JP19231487U patent/JPH0197671U/ja active Pending
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