JPS6030479B2 - Color television receiver switching device - Google Patents
Color television receiver switching deviceInfo
- Publication number
- JPS6030479B2 JPS6030479B2 JP14743877A JP14743877A JPS6030479B2 JP S6030479 B2 JPS6030479 B2 JP S6030479B2 JP 14743877 A JP14743877 A JP 14743877A JP 14743877 A JP14743877 A JP 14743877A JP S6030479 B2 JPS6030479 B2 JP S6030479B2
- Authority
- JP
- Japan
- Prior art keywords
- television receiver
- switching device
- circuit
- connect
- color television
- 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.)
- Expired
Links
- 238000010586 diagram Methods 0.000 description 3
- 239000003990 capacitor Substances 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Landscapes
- Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)
- Processing Of Color Television Signals (AREA)
Description
【発明の詳細な説明】
本発明はカラーテレビジョン受像機の陰極線管のカット
オフレベル設定時にビデオ信号、及び垂直偏向の動作を
一時停止させる切替装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a switching device for temporarily stopping the operation of a video signal and vertical deflection when setting the cutoff level of a cathode ray tube of a color television receiver.
従来より、陰極線管のカットオフ調整時は、陰極線管の
ビー−ム電流を殆んど流さない状態で調整するが、その
ため、垂直偏向動作を停止して、画面上では、穣一本の
ラスターを出して、陰極線管の３本のガンのカットオフ
点を調整する。Conventionally, when adjusting the cutoff of a cathode ray tube, the adjustment is done with almost no beam current flowing through the cathode ray tube, but for this purpose, the vertical deflection operation is stopped and only a single raster is displayed on the screen. and adjust the cutoff points of the three guns of the cathode ray tube.
その時、同時にビデオ信号も供給しないで、等価的に同
じレベルの信号が加わった状態にする。このようにする
ための従来例を第１図に示し、まずこの回路を説明する
。第１図において、１はテレビジョン受像機のビデオ検
波回路で、その出力は、結合コンデンサ２を通ってビデ
オ増幅回路３に加わり、陰極線管８を動作させるに必要
な信号レベルまで増幅する。At this time, a video signal is not supplied at the same time, but a signal of equivalently the same level is added. A conventional example for doing this is shown in FIG. 1, and this circuit will be explained first. In FIG. 1, reference numeral 1 denotes a video detection circuit of a television receiver, the output of which passes through a coupling capacitor 2 and is applied to a video amplifier circuit 3, where it is amplified to a signal level necessary to operate a cathode ray tube 8.
この出力をサービススイッチ９を通して、陰極線管８の
カソード、または、グリッドに加える。また、ビデオ検
波回路１の出力は、結合コンデンサ４を介して、垂直同
期回路５へ加わり、垂直同期信号と同期した垂直パルス
、または、垂直のこぎり波が、サービススイッチ９を経
て、垂直出力回路６へ加わり、垂直偏向に必要な電力増
幅を行ない、垂直偏向コイル７に加えられる。通常、サ
ービススイッチはＮ側に倒れているが、陰極線管８のカ
ットオフレベルを調整する場合にはＳ側に倒して、ビデ
オ信号、垂直偏向の出力を停止させている。ところが、
第１図で明らかなように、従来の装置は、ビデオ信号ラ
インとサービススイッチ９とを、リード１０，１１の２
本の線で、また、垂直信号ラインを、リード１２，１３
の２本の線でサービススイッチ９に接続してあり、合計
４本の線で接続していた。しかもサービススイッチ９は
サービスマン等に容易に操作できるようにするために、
受像機の裏板をはずしたら、すぐわかるような場所に置
かなければならず、かなり長いリード線を必要とする。
そのため、リード線へ不要な信号の誘導を受け易く、妨
害を受け易い。また、製造工程においてはリード線の取
付工数費用が高くつき、コスト高となる。また最近のよ
うにプリント基板で配線をするようになってきて、リー
ド線が不要になりつつあるが、プリントパターン設計が
難しく、プリント上に取付けられる部品数の制限を受け
ることになる。本発明は従来のかかる欠点をなくし、リ
ード線数が少なく、簡単で安価な手段によりサービスス
イッチの操作ができる功替装置を提供することを目的と
するものであり、以下本発明の実施例について説明する
。This output is applied to the cathode or grid of the cathode ray tube 8 through the service switch 9. Further, the output of the video detection circuit 1 is applied to a vertical synchronization circuit 5 via a coupling capacitor 4, and a vertical pulse or a vertical sawtooth wave synchronized with the vertical synchronization signal is transmitted via a service switch 9 to a vertical output circuit 5. is applied to the vertical deflection coil 7 to perform the power amplification necessary for vertical deflection. Normally, the service switch is turned to the N side, but when adjusting the cutoff level of the cathode ray tube 8, it is turned to the S side to stop the output of the video signal and vertical deflection. However,
As seen in FIG. 1, the conventional device connects the video signal line and the service switch 9 to two
Also connect the vertical signal lines to leads 12 and 13.
It was connected to the service switch 9 with two wires, and was connected with a total of four wires. Moreover, the service switch 9 is designed so that it can be easily operated by service personnel, etc.
Once the back plate of the receiver is removed, it must be placed in a place where it can be easily seen, which requires quite a long lead wire.
Therefore, unnecessary signals are easily guided to the lead wires, and they are easily subject to interference. Further, in the manufacturing process, the man-hour cost for attaching the lead wires is high, resulting in high costs. In recent years, printed circuit boards have been used for wiring, making lead wires unnecessary; however, it is difficult to design printed patterns, and the number of components that can be mounted on a printed circuit board is limited. It is an object of the present invention to eliminate such drawbacks of the conventional art and to provide a replacement device that has a small number of lead wires and can operate a service switch by simple and inexpensive means.Examples of the present invention will be described below. explain.
第２図に本発明の実施例を示す。FIG. 2 shows an embodiment of the present invention.
第１図と同一のものは同一ブロックであるので同一番号
を付しておき、これらの説明は省略する。先ず、ビデオ
増幅回路３のビデオ信号ラインにダイオード１４の陽極
を、垂直同期回路５の垂直信号ラインにダイオード１５
の陽極を接続し、両ダイオード１４，１５の陰極は共通
に接続して、その交点から抵抗１６を通して直流電源に
接続すると共に、両ダイオード１４，１５の接続点とア
ース間にサービススイッチ１９を挿入し、このスイッチ
１９によって、ダイオード１４，１５の接続点とアース
間を開閉できるようにする。先ず、ビデオ増幅回路３の
ビデオ信号レベルは第３図で示すように、ｅ，〜ｅ２、
また、垂直同期回路５の垂直パルスレベルはｅ３〜ｅ４
であるとする。Components that are the same as those in FIG. 1 are the same blocks, so the same numbers are given to them, and a description thereof will be omitted. First, the anode of the diode 14 is connected to the video signal line of the video amplifier circuit 3, and the diode 15 is connected to the vertical signal line of the vertical synchronization circuit 5.
Connect the anodes of both diodes 14 and 15, connect the cathodes of both diodes 14 and 15 in common, and connect the intersection point to a DC power source through a resistor 16, and insert a service switch 19 between the connection point of both diodes 14 and 15 and the ground. However, this switch 19 allows opening and closing between the connection point of the diodes 14 and 15 and the ground. First, the video signal level of the video amplifier circuit 3 is e, to e2, as shown in FIG.
Also, the vertical pulse level of the vertical synchronization circuit 5 is e3 to e4.
Suppose that
抵抗１６を通して加わる直流電源電圧はｅ，，ｅ２，ｅ
３，ｅ４よりも高い電圧Ｅとなっている。さて、通常動
作時はサービススイッチ１９は開いており、ダイオード
１４，１５の陰極に抵抗１６を通して、陽極より高い電
圧Ｅが加わっているため、ダイオードはカットオフ状態
になっているので、ビデオ回路３と、垂直同期回路５は
、何等干渉されることなく、通常の動作をしている。陰
極線管８のカットオフレベル調整時は、サービススイッ
チ１９を閉じる。すると、ダイオード１４，１５が導適
状態となり、ビデオ増幅回路３のビデオ信号、及び、垂
直同期回路５の垂直パルスはダイオード１４，１５を通
してアースされ、陰極線管８にはビデオ信号が加わらず
、垂直偏向も動作停止することになる。この状態で陰極
線管８のカットオフレベルの調整を行なうことができる
。以上のように本発明によれば、サービススイッチ１９
までは、リード線１８一本のみで配線でき、従来の４本
に比べて、線数が減り、これに伴って作業時間の短縮が
でき、コストも安くなる、またプリント配線の場合、こ
のパターンの占める面積が少なてすみ、パターン設計も
容易となる。The DC power supply voltage applied through the resistor 16 is e,,e2,e
3, the voltage E is higher than e4. Now, during normal operation, the service switch 19 is open, and a voltage E higher than the anode is applied to the cathode of the diodes 14 and 15 through the resistor 16, so the diode is in a cut-off state, so the video circuit 3 The vertical synchronization circuit 5 is operating normally without any interference. When adjusting the cutoff level of the cathode ray tube 8, the service switch 19 is closed. Then, the diodes 14 and 15 become conductive, and the video signal from the video amplifier circuit 3 and the vertical pulse from the vertical synchronization circuit 5 are grounded through the diodes 14 and 15, and no video signal is applied to the cathode ray tube 8; Deflection will also stop working. In this state, the cutoff level of the cathode ray tube 8 can be adjusted. As described above, according to the present invention, the service switch 19
Up to now, wiring can be done with only one lead wire (18), which reduces the number of wires compared to the conventional four lead wires, which reduces work time and costs. The area occupied by the pattern is reduced, and pattern design becomes easier.
またさらに、サービススイッチ１９も、従来の２回路ス
イッチから、１回路オンオフスイッチでよく、安価なも
のとなるといった効果がある。さらにサービススイッチ
１９まで直流動作なので、妨害、干渉を受けることが少
なくなるなど工業的価値は大なるものである。Furthermore, the service switch 19 can be replaced with a single circuit on/off switch instead of the conventional two-circuit switch, which has the advantage of being inexpensive. Furthermore, since even the service switch 19 operates with direct current, interference and interference are reduced, which is of great industrial value.
第１図は従釆のカラーテレビジョン受像機の切替装置の
回路図、第２図は本発明の−実施例におけるカラーテレ
ビジョン受像機の切替装置の回路図、第３図は同装置説
明のための信号波形図である。
３…・・・ビデオ増幅回路、５…・・・垂直同期回路、
６・・・・・・垂直出力回路、８・・・・・・陰極線管
、１４，１５・・・・・・ダイオード、１６・・・・・
・抵抗、１７・・・・・・直流電源、１９・・・・・・
サービススイッチ。
第１図第２図
第３図Fig. 1 is a circuit diagram of a switching device for a color television receiver according to the present invention, Fig. 2 is a circuit diagram of a switching device for a color television receiver according to an embodiment of the present invention, and Fig. 3 is a circuit diagram for explaining the same device. FIG. 3... Video amplifier circuit, 5... Vertical synchronization circuit,
6... Vertical output circuit, 8... Cathode ray tube, 14, 15... Diode, 16...
・Resistance, 17...DC power supply, 19...
service switch. Figure 1 Figure 2 Figure 3
Claims (1)
直信号ラインに上記ダイオードと別のダイオードの陽極
を接続し、上記両ダイオードの陰極を結合し、この結合
点をサービススイツチを介して接地するとともに抵抗を
介して上記両信号ラインの信号レベルの最大値よりも大
きい直流電圧を抵抗を介して印加したことを特徴とする
カラーテレビジヨン受像機の切替装置。1 Connect the anode of a diode to the video signal line, connect the anode of the above diode and another diode to the vertical signal line, connect the cathodes of both diodes, and ground this connection point via a service switch and connect it to a resistor. A switching device for a color television receiver, characterized in that a DC voltage greater than the maximum value of the signal level of both signal lines is applied via a resistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14743877A JPS6030479B2 (en) | 1977-12-07 | 1977-12-07 | Color television receiver switching device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14743877A JPS6030479B2 (en) | 1977-12-07 | 1977-12-07 | Color television receiver switching device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5479520A JPS5479520A (en) | 1979-06-25 |
| JPS6030479B2 true JPS6030479B2 (en) | 1985-07-16 |
Family
ID=15430327
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14743877A Expired JPS6030479B2 (en) | 1977-12-07 | 1977-12-07 | Color television receiver switching device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6030479B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102057194B (en) | 2008-06-09 | 2014-06-04 | 西门子公司 | Multi-way valve of a fuel system of a gas turbine |
-
1977
- 1977-12-07 JP JP14743877A patent/JPS6030479B2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5479520A (en) | 1979-06-25 |
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