JPS62135260U - - Google Patents
Info
- Publication number
- JPS62135260U JPS62135260U JP2370786U JP2370786U JPS62135260U JP S62135260 U JPS62135260 U JP S62135260U JP 2370786 U JP2370786 U JP 2370786U JP 2370786 U JP2370786 U JP 2370786U JP S62135260 U JPS62135260 U JP S62135260U
- Authority
- JP
- Japan
- Prior art keywords
- signal
- retrace
- circuit
- generates
- screen display
- 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
- 238000001514 detection method Methods 0.000 claims description 5
- 230000005856 abnormality Effects 0.000 claims 2
- 238000010894 electron beam technology Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 description 1
- 238000009499 grossing Methods 0.000 description 1
Landscapes
- Details Of Television Scanning (AREA)
Description
第１図は、本考案の実施例を示すブロツク回路
図である。第２図は、従来例を示すブロツク回路
図である。
主要部分の符号の説明、１……水平出力回路、
２……トランス、３，４……整流平滑回路、１０
……検出回路、２０……信号発生回路、３０……
帰線消去回路。
FIG. 1 is a block circuit diagram showing an embodiment of the present invention. FIG. 2 is a block circuit diagram showing a conventional example. Explanation of symbols of main parts, 1...Horizontal output circuit,
2...Transformer, 3, 4...Rectifier smoothing circuit, 10
...Detection circuit, 20...Signal generation circuit, 30...
Blanking circuit.
Claims (1)
コイル駆動電流の同期信号成分に基づいて帰線期
間を表わす帰線信号を得る信号発生トランスと、
前記帰線信号が所定時間以上存在しないとき異常
検出信号を発生する検出回路と、前記異常検出信
号の不存在時において前記帰線信号に基づいて帰
線消去パルスを発生し、前記異常検出信号の存在
時においてビームキラー信号を発生する信号発生
回路とからなり、前記信号発生回路の出力信号を
前記画面表示用陰極線管の電子ビーム流を抑制す
る手段に供給するようにされていることを特徴と
する画面表示用陰極線管の保護回路。 a signal generating transformer which is a protection circuit for a screen display cathode ray tube and which obtains a retrace signal representing a retrace period based on a synchronization signal component of a deflection coil drive current;
a detection circuit that generates an abnormality detection signal when the retrace signal does not exist for a predetermined time or more; and a detection circuit that generates a blanking pulse based on the retrace signal when the abnormality detection signal is absent, and A signal generating circuit that generates a beam killer signal when the beam killer signal is present, and an output signal of the signal generating circuit is supplied to means for suppressing the electron beam flow of the screen display cathode ray tube. A protection circuit for cathode ray tubes used for screen display.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2370786U JPS62135260U (en) | 1986-02-20 | 1986-02-20 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2370786U JPS62135260U (en) | 1986-02-20 | 1986-02-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62135260U true JPS62135260U (en) | 1987-08-26 |
Family
ID=33446619
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2370786U Pending JPS62135260U (en) | 1986-02-20 | 1986-02-20 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62135260U (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6035323U (en) * | 1983-08-16 | 1985-03-11 | 日本電気ホームエレクトロニクス株式会社 | Optical pick-up device |
| JPS6130176A (en) * | 1984-07-20 | 1986-02-12 | Matsushita Electric Ind Co Ltd | Display device |
| JPS62133868A (en) * | 1985-12-05 | 1987-06-17 | Mitsubishi Electric Corp | Crt driving circuit |
-
1986
- 1986-02-20 JP JP2370786U patent/JPS62135260U/ja active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6035323U (en) * | 1983-08-16 | 1985-03-11 | 日本電気ホームエレクトロニクス株式会社 | Optical pick-up device |
| JPS6130176A (en) * | 1984-07-20 | 1986-02-12 | Matsushita Electric Ind Co Ltd | Display device |
| JPS62133868A (en) * | 1985-12-05 | 1987-06-17 | Mitsubishi Electric Corp | Crt driving circuit |
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