JPS58129784U - Degaussing device for video projection equipment - Google Patents
Degaussing device for video projection equipmentInfo
- Publication number
- JPS58129784U JPS58129784U JP10100782U JP10100782U JPS58129784U JP S58129784 U JPS58129784 U JP S58129784U JP 10100782 U JP10100782 U JP 10100782U JP 10100782 U JP10100782 U JP 10100782U JP S58129784 U JPS58129784 U JP S58129784U
- Authority
- JP
- Japan
- Prior art keywords
- convergence
- video projection
- ray tube
- cathode ray
- current
- 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.)
- Granted
Links
Landscapes
- Video Image Reproduction Devices For Color Tv Systems (AREA)
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
第１図は本考案の１実施例のブロック線図、第２図は同
実施例の動作説明のための電流波形図である。
１・・・コンバーゼンス補正回路、２・・・コンバーゼ
ンスヨーク、３・・・ブラウン管、４・・・減衰振動発
生回路。FIG. 1 is a block diagram of an embodiment of the present invention, and FIG. 2 is a current waveform diagram for explaining the operation of the embodiment. 1... Convergence correction circuit, 2... Convergence yoke, 3... Braun tube, 4... Damped vibration generation circuit.
Claims (1)
に装着されたコンバーゼンスヨークにコンバーゼンス電
流を流して投射スクリーン面上でのコンバーゼンスずれ
を補正するものにおいて、電源オン時、手動スイッチオ
ン時、或いはブラウン管の管内放電検出時等の等特定時
に駆動されて減衰振動電流を発生する減衰振動発生回路
と、該発生回路より発生された減衰振動電流を上記コン
バーゼンス電流に重畳する手段とを備え、上記特定時に
ブラウン管及びその周辺装置の消磁を行なうことを特徴
とするビデオプロジェクション装置の消磁装置。In a device that corrects convergence deviation on the projection screen surface by flowing a convergence current to the convergence yoke attached to the neck of each cathode ray tube of a video projection device, it is possible to detect discharge inside the cathode ray tube when the power is turned on, when a manual switch is turned on, or when a discharge is detected inside the cathode ray tube. a damped oscillation generating circuit that is driven to generate a damped oscillating current at a specific time such as time, and a means for superimposing the damped oscillating current generated by the generating circuit on the convergence current; A degaussing device for a video projection device, which degausses the device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10100782U JPS58129784U (en) | 1982-07-02 | 1982-07-02 | Degaussing device for video projection equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10100782U JPS58129784U (en) | 1982-07-02 | 1982-07-02 | Degaussing device for video projection equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58129784U true JPS58129784U (en) | 1983-09-02 |
| JPS6311801Y2 JPS6311801Y2 (en) | 1988-04-06 |
Family
ID=30101076
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10100782U Granted JPS58129784U (en) | 1982-07-02 | 1982-07-02 | Degaussing device for video projection equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58129784U (en) |
-
1982
- 1982-07-02 JP JP10100782U patent/JPS58129784U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6311801Y2 (en) | 1988-04-06 |
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