JPS5911563U - Service switch circuit - Google Patents
Service switch circuitInfo
- Publication number
- JPS5911563U JPS5911563U JP10682382U JP10682382U JPS5911563U JP S5911563 U JPS5911563 U JP S5911563U JP 10682382 U JP10682382 U JP 10682382U JP 10682382 U JP10682382 U JP 10682382U JP S5911563 U JPS5911563 U JP S5911563U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- terminal
- service switch
- vertical drive
- color signal
- 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
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
図面はいずれも本考案に関するものであって、第１図は
使用ＩＣの要部をブロックで示す図面であり、第２図は
サービススイッチ回路図である。
１・・・ＩＣ１２・・・映像増幅回路、３・・・バンド
パス増幅器、８，９．１０・・・色信号出力端子、１１
・・・垂直ドライブ回路、１２・・・サービススイッチ
、１４・・・ブラウン管駆動トランジスタ、Ｄ□、Ｄ２
・・・第１、第２スイツチングダイオード、イ・・・第
１接点、口・・・第２接点、玩・・・第１外付は端子、
■・・・第２外付端子、＠・・・映像出力端子。The drawings are all related to the present invention; FIG. 1 is a block diagram showing the main parts of the IC used, and FIG. 2 is a service switch circuit diagram. 1...IC12...Video amplification circuit, 3...Band pass amplifier, 8,9.10...Color signal output terminal, 11
... Vertical drive circuit, 12 ... Service switch, 14 ... Braun tube drive transistor, D□, D2
...first and second switching diodes, a...first contact, opening...second contact, connection...first external terminal,
■...Second external terminal, @...Video output terminal.
Claims (1)
止して画面上に横一線の輝線を映出するようにするサー
ビススイッチ回路において、映像増幅回路、垂直ドライ
ブ回路及び色信号処理回路を有するＩＣの映像出力端子
とブラウン管駆動トランジスタとの間にサービススイッ
チを挿入すると共に前記駆動トランジスタを前記ＩＣの
色信号出力端子にも接続して色信号と映像信号の合成を
なし、一方前記ＩＣの垂直ドライブ回路用の第１外付は
端子とＡＣＣ検出回路用の第２外付は端子の双方にスイ
ッチングダイオードを介して前記サービススイッチの第
２接点を接続し、サービススイッチを第２接点に閉成し
たサービス時に前記映像出力端子の電圧をスイッチング
ダイオードの順方向路を通して前記第１外付は端子に与
えることにより前記垂直ドライブ回路を不作動になし同
時に第２外付は端子に与えることによって前記ＡＣＣ検
出回路に接続されたバンドパス増幅器を “不作
動になすようにし゛たことを特徴とするサーとスイッチ
ング。In the service switch circuit that stops the vertical deflection operation and displays a horizontal bright line on the screen when performing white balance adjustment, etc., an IC that includes a video amplification circuit, a vertical drive circuit, and a color signal processing circuit is used. A service switch is inserted between the video output terminal and the cathode ray tube drive transistor, and the drive transistor is also connected to the color signal output terminal of the IC to synthesize the color signal and the video signal, while the vertical drive circuit of the IC The first external terminal for the ACC detection circuit is a terminal, and the second external terminal for the ACC detection circuit is connected to the second contact of the service switch via a switching diode, and the service switch is closed to the second contact. At the same time, the first external device disables the vertical drive circuit by applying the voltage of the video output terminal to the terminal through the forward path of the switching diode, and at the same time, the second external device deactivates the vertical drive circuit by applying the voltage to the terminal. A circuit and switching device characterized in that a bandpass amplifier connected to the circuit is rendered inactive.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10682382U JPS5911563U (en) | 1982-07-13 | 1982-07-13 | Service switch circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10682382U JPS5911563U (en) | 1982-07-13 | 1982-07-13 | Service switch circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5911563U true JPS5911563U (en) | 1984-01-24 |
| JPS6311802Y2 JPS6311802Y2 (en) | 1988-04-06 |
Family
ID=30249825
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10682382U Granted JPS5911563U (en) | 1982-07-13 | 1982-07-13 | Service switch circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5911563U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6362475A (en) * | 1986-08-29 | 1988-03-18 | アールシーエー トムソン ライセンシング コーポレーシヨン | Deflection circuit with service operation mode |
-
1982
- 1982-07-13 JP JP10682382U patent/JPS5911563U/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6362475A (en) * | 1986-08-29 | 1988-03-18 | アールシーエー トムソン ライセンシング コーポレーシヨン | Deflection circuit with service operation mode |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6311802Y2 (en) | 1988-04-06 |
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