JPS60174504A - Oscillation device - Google Patents

Oscillation device

Info

Publication number
JPS60174504A
JPS60174504A JP3052184A JP3052184A JPS60174504A JP S60174504 A JPS60174504 A JP S60174504A JP 3052184 A JP3052184 A JP 3052184A JP 3052184 A JP3052184 A JP 3052184A JP S60174504 A JPS60174504 A JP S60174504A
Authority
JP
Japan
Prior art keywords
oscillator
voltage
oscillation
power supply
horizontal
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
Application number
JP3052184A
Other languages
Japanese (ja)
Other versions
JPH0576803B2 (en
Inventor
Masahiro Watanabe
渡辺　政弘
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP3052184A priority Critical patent/JPS60174504A/en
Publication of JPS60174504A publication Critical patent/JPS60174504A/en
Publication of JPH0576803B2 publication Critical patent/JPH0576803B2/ja
Granted legal-status Critical Current

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  • Details Of Television Scanning (AREA)
  • Inductance-Capacitance Distribution Constants And Capacitance-Resistance Oscillators (AREA)

Abstract

PURPOSE:To reduce the difference in the operation start period of an oscillator and the stabilize the operation of the oscillation device by providing the 2nd oscillator which is supplied with a source voltage through the operation of the 1st oscillator, and setting the oscillation start source voltage of the 1st oscillator higher than the oscillation start source voltage of the 2nd oscillator. CONSTITUTION:A horizontal oscillator 2 as the 1st oscillator of the oscillation device of a TV receiver is driven with the source voltage VCC1 at a power source terminal and a flyback transformer 6 is operated with the output of a horizontal output circuit 4. The voltage from the transoformer 6 is rectified and smoothed to obtain a DC voltage B3 and a vertical oscillator 13 as the 2nd oscillator is driven with the DC voltage B3 to supply its oscillation output to a vertical deflecting coil 17. An operating voltage control circuit 18 is provided between the power source terminal 1 and oscillator 2. This circuit 18 sets the oscillation start voltage V0 of the oscillator 2 higher than the oscillation start voltage VS of the oscillator 13 to reduce the voltage difference between voltages VCC1 and VCC2, and the difference in the operation start period is reduced to stabilize the oscillating operation.

Description

【発明の詳細な説明】 産業上の利用分野 本発明は、第１および第２の発振器を備え、第２の発振
器の動作電源電圧が第１の発振器の動作に基いて作り出
される構成の発振装置に関する。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention provides an oscillation device comprising a first and a second oscillator, and in which the operating power supply voltage of the second oscillator is generated based on the operation of the first oscillator. Regarding.

従来例の構成とその問題点 たとえは、テレビジョン受像器では、水平々らびに表置
偏向コイルの駆動のために水平発振器と垂直発振器が使
用されるが、水平発振器が動作を開始することによシ、
垂直発振器の動作電源電圧が作シ出される構成とされた
発振装置を使用する場合がある。Conventional configurations and their problems For example, in a television receiver, a horizontal oscillator and a vertical oscillator are used to drive horizontal and surface deflection coils. Yosi,
An oscillation device configured to generate an operating power supply voltage for a vertical oscillator may be used.

第１図は、このような発振装置の構成、例示するブロッ
ク図であシ、以下に、第１図を参照して発振装置の構成
ならびにその動作について詳しく説明する。FIG. 1 is a block diagram illustrating the configuration of such an oscillation device. Below, the configuration of the oscillation device and its operation will be described in detail with reference to FIG. 1.

図示する発振装置の電源端子１に電源電圧が加えられる
と、まず水平発振器２が作動し、つづいて水平ドライバ
段３、水平出力回路４が作動する。When a power supply voltage is applied to the power supply terminal 1 of the illustrated oscillation device, the horizontal oscillator 2 is activated first, followed by the horizontal driver stage 3 and the horizontal output circuit 4.

水平出力口・路４は水平偏向コイ／Ｌ１５およびフライ
バックトランス６を駆動する。この水平偏向コイ／１１
５に流れる偏向電流によって水平画像が形成されること
はよく知られている。また、フライバックトランス６で
昇、降圧されたフライバックパルスは、ダイオード７．
８および９で整流されるとともに、コンデンサ１０，１
１および１２で平滑され、たとえば、直流電圧Ｂ、　、
　Ｂ２およびＢ３として生成される。これらの直流電圧
の中で電圧の高い直流電圧Ｂ１ｓ　Ｂ２は、たとえば、
ブラウン管に印加するための電圧として用いられる。ま
た、比較的電圧の低い直流電圧Ｂ６（１２〜２５Ｖ程度
）は、テレビジョン受像機内の回路装置に用いる電源電
圧として、たとえば垂直発振器１３の電源端子１４に与
えられる。Horizontal output port/path 4 drives horizontal deflection coil/L15 and flyback transformer 6. This horizontal deflection carp/11
It is well known that a horizontal image is formed by the deflection current flowing through the image sensor 5. Further, the flyback pulse stepped up and down by the flyback transformer 6 is passed through the diode 7.
8 and 9, and capacitors 10, 1
1 and 12, for example, the DC voltage B, ,
Produced as B2 and B3. The DC voltages B1s and B2, which are higher among these DC voltages, are, for example,
It is used as a voltage to be applied to a cathode ray tube. Further, a relatively low DC voltage B6 (approximately 12 to 25 V) is applied to, for example, the power terminal 14 of the vertical oscillator 13 as a power supply voltage used for a circuit device within the television receiver.

第１図に示すような電源回路構成をとるならば水平発振
器２の作動が開始されることによって、電源端子１４に
接続される垂直発振器などの回路装置が作動することに
なる。このようにして垂直発振器１３が作動すると、こ
の垂直発振器からのこき′シ波電圧が発生し、垂直ドラ
イバ段１５、さらに垂直出力回路１６が駆動され、垂直
偏向コイ）ｖ１７に垂直偏向電流が流れる。そして、垂
直偏向コイ／ｖ１７に流れる垂直偏向電流によって垂直
画像が形成される。If the power supply circuit configuration is as shown in FIG. 1, when the horizontal oscillator 2 starts operating, a circuit device such as a vertical oscillator connected to the power supply terminal 14 will start operating. When the vertical oscillator 13 operates in this way, a wave voltage is generated from the vertical oscillator, which drives the vertical driver stage 15 and further the vertical output circuit 16, causing a vertical deflection current to flow through the vertical deflection coil (v17). . A vertical image is formed by the vertical deflection current flowing through the vertical deflection coil/v17.

ところで、上記の電源構成を用いるテレビジョン受像機
では、最初に水平偏向電流が流れ１次に垂直偏向電流が
流れるために、テレビジョン受像機の電源スィッチを投
入した直後の画像は、第２図で示すように、水平振幅ａ
が垂直振幅すよりも大きな歪んだ画像となる。この振幅
の差は、水平発振開始電源電圧と垂直発振開始電源電圧
との差−に比例する。このような、歪んだ画像が電源ス
ィッチを投入した直後に生じることは、テレビジョン受
像機として好ましいことではなく、また、視聴者に不快
感を与えるととにもなる。By the way, in a television receiver using the above power supply configuration, the horizontal deflection current flows first and then the vertical deflection current flows, so the image immediately after the power switch of the television receiver is turned on is as shown in Figure 2. As shown in , the horizontal amplitude a
This results in a distorted image that is larger than the vertical amplitude. This difference in amplitude is proportional to the difference between the horizontal oscillation start power supply voltage and the vertical oscillation start power supply voltage. It is not desirable for a television receiver to have such a distorted image immediately after turning on the power switch, and it also causes discomfort to the viewer.

発明の目的 本発明の目的は、発振器の動作開始時期の差を小さくし
、この差に起因する不都合を排除することができる発振
装置を提供することにある。OBJECTS OF THE INVENTION An object of the present invention is to provide an oscillation device that can reduce the difference in the operation start timing of oscillators and eliminate the inconvenience caused by this difference.

発明の構成 本発明の発振装置は、第１の発振器、この発振器が動作
を開始することによシミ源電圧が供給さ。Structure of the Invention The oscillation device of the present invention includes a first oscillator, and when this oscillator starts operating, a stain source voltage is supplied.

れる第２の発振器とを備えるとともに、第１の発振器の
発振開始電圧が第２の発振器の発振開始電圧よシも高く
選定されたものである。このように構成された本発明の
発振装置では、第１と第２の発振器がほぼ同時期に発振
動作を開始する。The oscillation start voltage of the first oscillator is selected to be higher than the oscillation start voltage of the second oscillator. In the oscillation device of the present invention configured as described above, the first and second oscillators start their oscillation operations at approximately the same time.

実施例の説明 第３図は本発明にかかるテレビジョン受像機用の発振装
置の一実施例を示す図であシ、第１図で示した従来の発
振装置とは、電源端子１側にたとえば定電圧ダイオード
等を含み、電源電圧ｖｃ’ｃ＋が所定値ｖ０に達したと
ころで動作電圧を発生する制御回路１８を挿入した点で
相違している。DESCRIPTION OF EMBODIMENTS FIG. 3 is a diagram showing an embodiment of an oscillation device for a television receiver according to the present invention.The conventional oscillation device shown in FIG. The difference is that a control circuit 18 that includes a constant voltage diode and the like and generates an operating voltage when the power supply voltage vc'c+ reaches a predetermined value v0 is inserted.

このように構成すれば、水平発振器２には、電源端子１
に供給される電源電圧Ｖ。。、が電圧ｖ０に達したとこ
ろで動作電圧が印加され、この時点から水平発振器２が
動作する。その後に垂直発振器１３が作動する。With this configuration, the horizontal oscillator 2 has the power terminal 1
The power supply voltage V supplied to . When , reaches the voltage v0, an operating voltage is applied, and the horizontal oscillator 2 starts operating from this point on. After that, the vertical oscillator 13 is activated.

第４図はこの動作をよシ詳しく説明するだめ、電源電圧
Ｖ。（１＋　ｖＯ（ｔ２の過渡的な関係を示した図であ
る。第４図において、横軸はテレビジョン受像機の電源
スィッチを投入した後の経過時間を示し、縦軸は電源端
子１および電源端子１４に加わる電源電圧ｖ０゜４．ｖ
ｏ。２を示す。In order to explain this operation in more detail, FIG. 4 shows the power supply voltage V. (1+vO(t2). In FIG. 4, the horizontal axis shows the elapsed time after turning on the power switch of the television receiver, and the vertical axis shows the power supply terminal Power supply voltage applied to terminal 14 v0°4.v
o. 2 is shown.

電源スィッチ（図示せず）を投入すると、先ず、電源端
子１にｖｏ。、で示す電源電圧が加わる・しかしながら
、水平発振器２への動作電圧の供給は、電源電圧Ｖ。。When the power switch (not shown) is turned on, VO is first applied to the power terminal 1. However, the operating voltage is supplied to the horizontal oscillator 2 at the power supply voltage V. .

１の値が前記の電圧ｖｏに達しなければなされない。こ
のため、水平発振器２は電源スィッチの投入時点では動
作せず、電源電圧ｖ０゜、が零から前記ｖ０に達するま
での時間ｔ０が経過したところで動作する。一方、電源
電圧ｖＯＣ２は図示するよう時刻　ｔｏで発生し、これ
が電源端子１４にあられれ、垂直発振器１３に印加され
る。垂直発振器１３の発振開始電源電圧をｖ８とし、電
源電圧ｖ０゜２がこの電圧ｖ８に到達するまでの時間を
ｔ８とすると、水平発振器２と垂直発振器１３が動作を
開始する時間差ｔｄは、ｔｄ＝ｔｓ−１０となる。この
時間差ｔｄは垂直発振器１３の発振開始電源電圧ｖｓが
低くなるにつれて小さくなる。したがって、垂直発振器
の発振開始電源電圧ｖｓを低くするならば垂直発振器１
３の発振開始時刻ｔ８を水平発振器２の発振開始時刻ｔ
０に近づけることができ、両発振器がほぼ同時に発振を
開始するという理想状態に近づく。This is done only when the value of 1 reaches the voltage vo. Therefore, the horizontal oscillator 2 does not operate when the power switch is turned on, but operates after the time t0 from when the power supply voltage v0° reaches v0 from zero has elapsed. On the other hand, the power supply voltage vOC2 is generated at time to as shown in the figure, and is applied to the power supply terminal 14 and applied to the vertical oscillator 13. Assuming that the oscillation starting power supply voltage of the vertical oscillator 13 is v8, and the time required for the power supply voltage v0°2 to reach this voltage v8 is t8, the time difference td between the horizontal oscillator 2 and the vertical oscillator 13 starting operation is td= It becomes ts-10. This time difference td becomes smaller as the oscillation start power supply voltage vs of the vertical oscillator 13 becomes lower. Therefore, if the oscillation start power supply voltage vs of the vertical oscillator is to be lowered, the vertical oscillator 1
The oscillation start time t8 of horizontal oscillator 2 is the oscillation start time t of horizontal oscillator 2.
0, which approaches the ideal state in which both oscillators start oscillating almost simultaneously.

ところで、第３図で示した動作電圧制御回路は、例示し
た定電圧ダイオードのみならず、通常のダイオードなど
定電圧素子としての機能を有する素子を用いて構成する
ことができる。By the way, the operating voltage control circuit shown in FIG. 3 can be constructed using not only the illustrated constant voltage diode but also an element having a function as a constant voltage element such as a normal diode.

第５図および第６図は、動作電圧制御回路が付加された
発振器の要部の構成を示す図であシ、トランジスタ３０
，３１．３２はシュミットトリガ段の構成要素、３３は
ダイオード接続したトランジスタ、３４は抵抗、３６は
定電圧ダイオード、３６は直列接続されたダイオード群
である。すなわち、第６図の発振器は、電源電圧ｖ０゜
が定電圧ダイオード３６のブレークダウン電圧とトラン
ジスタ３３のベースエミッタ間順電圧（ｖＢｘ）との和
に達したところで発振器は動作状態になる。また、第６
図の発振器は電源電圧ｖ０゜がダイオード群３６の順電
圧降下の総和とトランジスタ３３のベースエミッタ間順
電圧（ｖＢＲ）との和に達したところで動作状態となる
。これらの発振器は、第３図の水平発振器２として好適
である。5 and 6 are diagrams showing the configuration of the main parts of an oscillator to which an operating voltage control circuit is added, and the transistor 30
, 31 and 32 are components of the Schmitt trigger stage, 33 is a diode-connected transistor, 34 is a resistor, 36 is a constant voltage diode, and 36 is a group of series-connected diodes. That is, the oscillator of FIG. 6 enters the operating state when the power supply voltage v0° reaches the sum of the breakdown voltage of the constant voltage diode 36 and the base-emitter forward voltage (vBx) of the transistor 33. Also, the 6th
The oscillator shown in the figure enters the operating state when the power supply voltage v0° reaches the sum of the sum of the forward voltage drops of the diode group 36 and the base-emitter forward voltage (vBR) of the transistor 33. These oscillators are suitable as the horizontal oscillator 2 of FIG.

第７図は、第６図および第６図で用いた定電圧素子を除
いた発振器でおシ、電源電圧ｖ０゜がトランジスタ３３
のベースエミッタ間順電圧（ｖＢｘ）ニ達したところか
ら動作状態になる。この発振器は、第３図の垂直発振器
として好適である。FIG. 7 shows an oscillator excluding the constant voltage element used in FIGS.
The device enters the operating state when the base-emitter forward voltage (vBx) of . This oscillator is suitable as the vertical oscillator of FIG.

以−り説明したところから明らか１よりに、本発明の発
振装置では、第１の発振器の発振開始用電源電圧を第２
の発振器のそれよシも高く定めるとともに、第２の発振
器の発振開始用電源電圧を極力小さく設定することが大
切なことである。It is clear from the above explanation that in the oscillation device of the present invention, the power supply voltage for starting oscillation of the first oscillator is changed to the second power supply voltage.
It is important to set the voltage of the second oscillator higher than that of the second oscillator, and to set the power supply voltage for starting oscillation of the second oscillator as low as possible.

このような配慮の下で形成された第３図の発振装置によ
れば、電源スィッチの投入直後から、第８図で示すよう
に水平振幅ａ′と垂直振幅ｂ′とがほぼ等しい良好な画
像がブラウン管上に映出される。According to the oscillation device shown in FIG. 3, which was formed with such considerations in mind, immediately after the power switch is turned on, a good image in which the horizontal amplitude a' and the vertical amplitude b' are approximately equal, as shown in FIG. is projected on a cathode ray tube.

発明の効果 本発明の発振装置は、複数個の発振器が同一の電源ライ
ンには接続されることのない状態の下で発振器の発振開
始時期をほぼ揃えて作動させることができるもので１、
特にテレビジョン受像機に適用して大きな効果を奏する
。Effects of the Invention The oscillation device of the present invention is capable of operating a plurality of oscillators with almost the same oscillation start timing under the condition that the oscillators are not connected to the same power supply line.
It is particularly effective when applied to television receivers.

【図面の簡単な説明】[Brief explanation of drawings]

′第１図は従来の発振装置を示す図、第２図は第１図の
発振装置を用いたテレビジョン受像機の電源ヌイソチ投
入直後の画像状態を示す図、第３図は本発明にかかる発
振装置の一実施例を示す図、第４図は電源電圧の過渡特
性を示す図、第６図〜第７図は発振器の構成例を示す図
、第８図は本発明の発振装置を用いたテレビジョン受象
機のｔ！スイッチ投入直後の画像状態を示す図である。 １．１４・・・・・・電源端子、２・・・・・水平発振
器、３・・・・・・水平ドライバ段、４・・・・・水平
出力回路、５・・・・・水平偏向コイ・ル、６・・・・
・・フライバックトランス、７．８．９・・・・・・ダ
イオード、１０，１１　．１２・・・・・・コンデンサ
、１３・旧・・垂直発振器、１５　・・・・垂直ドライ
バ段、１６・・・・・・垂直出力回路、１７・・・・・
垂直偏向コイル、１８・・・・・動作電圧制御回路、３
０．３１．３２，２３・旧　トランジスタ、３４・・・
・・・抵抗、３５・・・・・・定電圧ダイオード、３６
・・・・・ダイオード群。 代理人の氏名　弁理士　中　尾　敏　男　ほか１名第１
図 第３図 １Ｂ 第４図 ｔ、−シ ー　時間 第５図 第６図 第７図1 is a diagram showing a conventional oscillation device, FIG. 2 is a diagram showing an image state of a television receiver using the oscillation device of FIG. 1 immediately after the power is turned on, and FIG. 3 is a diagram according to the present invention. FIG. 4 is a diagram showing the transient characteristics of the power supply voltage, FIGS. 6 to 7 are diagrams showing an example of the configuration of an oscillator, and FIG. 8 is a diagram showing an example of the oscillation device of the present invention. T! of the television receiver that was there! FIG. 6 is a diagram showing an image state immediately after the switch is turned on. 1.14...Power supply terminal, 2...Horizontal oscillator, 3...Horizontal driver stage, 4...Horizontal output circuit, 5...Horizontal deflection Koi Lu, 6...
...Flyback transformer, 7.8.9...Diode, 10,11. 12... Capacitor, 13... Vertical oscillator, 15... Vertical driver stage, 16... Vertical output circuit, 17...
Vertical deflection coil, 18...Operating voltage control circuit, 3
0.31.32,23・old transistor, 34...
... Resistor, 35 ... Constant voltage diode, 36
...Diode group. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
Figure 3 Figure 1B Figure 4 t, -see Time Figure 5 Figure 6 Figure 7

Claims (2)

【特許請求の範囲】[Claims] （１）第１の発振器、同第１の発振器の動作によシミ源
電圧が供給される第２の発振器を具備するとともに、前
記第１の発振器の発振開始電源電圧が前記第２の発振器
の発振開始電源電圧よりも高く選定されて′いることを
特徴とする発振装置。(1) A first oscillator, and a second oscillator to which a stain source voltage is supplied by the operation of the first oscillator, and the oscillation start power supply voltage of the first oscillator is the same as that of the second oscillator. An oscillation device characterized in that the oscillation start power supply voltage is selected to be higher than the oscillation start power supply voltage. （２）第１の発振器および第２の発振器がテレビジョン
受像機の水平発振器および表置発振器であることを特徴
とする特許請求の範囲第１項に記載の発振装置。(2) The oscillation device according to claim 1, wherein the first oscillator and the second oscillator are a horizontal oscillator and a surface oscillator of a television receiver.
JP3052184A 1984-02-20 1984-02-20 Oscillation device Granted JPS60174504A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3052184A JPS60174504A (en) 1984-02-20 1984-02-20 Oscillation device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3052184A JPS60174504A (en) 1984-02-20 1984-02-20 Oscillation device

Publications (2)

Publication Number Publication Date
JPS60174504A true JPS60174504A (en) 1985-09-07
JPH0576803B2 JPH0576803B2 (en) 1993-10-25

Family

ID=12306111

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3052184A Granted JPS60174504A (en) 1984-02-20 1984-02-20 Oscillation device

Country Status (1)

Country Link
JP (1) JPS60174504A (en)

Also Published As

Publication number Publication date
JPH0576803B2 (en) 1993-10-25

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