JPH03231504A - Piezoelectric oscillation circuit - Google Patents
Piezoelectric oscillation circuitInfo
- Publication number
- JPH03231504A JPH03231504A JP2641990A JP2641990A JPH03231504A JP H03231504 A JPH03231504 A JP H03231504A JP 2641990 A JP2641990 A JP 2641990A JP 2641990 A JP2641990 A JP 2641990A JP H03231504 A JPH03231504 A JP H03231504A
- Authority
- JP
- Japan
- Prior art keywords
- oscillation
- piezoelectric
- circuit
- input
- gate
- 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
- 230000010355 oscillation Effects 0.000 title claims abstract description 58
- 239000013078 crystal Substances 0.000 abstract description 23
- 238000001514 detection method Methods 0.000 abstract description 6
- 239000003990 capacitor Substances 0.000 description 8
- 238000010586 diagram Methods 0.000 description 6
- 239000000919 ceramic Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- WSMQKESQZFQMFW-UHFFFAOYSA-N 5-methyl-pyrazole-3-carboxylic acid Chemical compound CC1=CC(C(O)=O)=NN1 WSMQKESQZFQMFW-UHFFFAOYSA-N 0.000 description 2
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000007689 inspection Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
Landscapes
- Oscillators With Electromechanical Resonators (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明は、圧電発振回路に係り、特に発振起動特性のよ
い圧電発振回路に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a piezoelectric oscillation circuit, and particularly to a piezoelectric oscillation circuit with good oscillation start-up characteristics.
［従来の技術］
第４図は、従来の圧電発振回路であり、９１は０−ＭＯ
ＳインバーターＩＣであり、９２の帰還抵抗、９６のド
レイン抵抗、９４のゲートコンデンサー ９５のドレイ
ンコンデンサー ９６の水晶振動子等の圧電振動子によ
り構成される。[Prior art] Fig. 4 shows a conventional piezoelectric oscillation circuit, and 91 is a 0-MO
It is an S inverter IC, and is composed of a feedback resistor 92, a drain resistor 96, a gate capacitor 94, a drain capacitor 95, and a piezoelectric vibrator such as a crystal oscillator 96.
［発明が解決しようとする課題］
しかし、従来の圧電発振回路で、圧電振動子を発振させ
る時、電源投入時の発振起動特性が悪（電源投入後−発
振を開始するまでに１〜１０秒もの長時間を要し、その
ため電子時計等のように、−旦水晶振動子が発振した後
、発振動作を維持するだけでよ（起動特性を問題としな
い電子機器にしか利用できず、電源投入後直ちに動作し
なければならない電子機器、例えば、赤外線リモートコ
ントローラーのキャリア用発振回路等のように、通常は
、発振を停止させていて、キー操作により発振を開始す
る起動特性が問題となる機器には、利用できないという
問題があった。[Problem to be solved by the invention] However, when the piezoelectric vibrator is caused to oscillate in the conventional piezoelectric oscillator circuit, the oscillation start-up characteristics when the power is turned on are poor (it takes 1 to 10 seconds after the power is turned on to start oscillation). Therefore, in electronic watches, etc., it is only necessary to maintain the oscillation operation once the crystal resonator has oscillated. For electronic devices that must start operating immediately after operation, such as carrier oscillation circuits for infrared remote controllers, which normally stop oscillation and start oscillating when a key is pressed, this is a problem for devices that have a startup characteristic that is problematic. The problem was that it was not available.
また、水晶振動子製造工程において、周波数周調整およ
び検査等の圧電発振回路には、電源を投入させた状態で
、水晶振動子を取り換え、使用する場合等においても、
発振待ち時間を長くもうける必要があり、工程のサイク
ルタイムを長くしてしまった。In addition, in the crystal resonator manufacturing process, when replacing and using a crystal resonator while the power is turned on to the piezoelectric oscillation circuit for frequency adjustment and inspection, etc.
It was necessary to provide a long oscillation waiting time, which increased the cycle time of the process.
本発明は、以上の課題を解決するためになされたもので
あり、その目的とするところは、発振起動特性のよい圧
電発振回路を提供することである［課題を解決するため
の手段］
本発明の圧電発振回路は、発振段のインバーターＩＣを
複数入力とし、その一方の入力と出力間に、圧電振動子
を接続し、発振回路を構成し、もう一方の入力に、発振
開始時に、短時間、圧電振動子と同一もしくは、近似の
周波数を入力するタイミング発生回路のタイミングによ
り、標準信号発生装置より短時間入力する事を特徴とす
る。The present invention has been made to solve the above problems, and its purpose is to provide a piezoelectric oscillation circuit with good oscillation starting characteristics [Means for solving the problems] The present invention The piezoelectric oscillator circuit has multiple inputs from the inverter IC in the oscillation stage, and a piezoelectric vibrator is connected between one input and output to form the oscillation circuit, and the other input is connected to the input for a short time when oscillation starts. , it is characterized in that it is inputted for a shorter time than a standard signal generation device by the timing of a timing generation circuit that inputs the same or approximate frequency as that of the piezoelectric vibrator.
［実施例〕
本発明の第１の実施例として、水晶振動子測定工程用圧
電発振回路と、第１図回路図、第２図タイミングチャー
ト図により説明する。[Embodiment] A first embodiment of the present invention will be described with reference to a piezoelectric oscillation circuit for a crystal resonator measurement process, a circuit diagram in FIG. 1, and a timing chart in FIG. 2.
１は、複数入力をもつインバーターゲートＩＣ（本例で
はＮＯＲゲートＩＣ）で、その入力端子２と出力端子４
との間に並列に接続される帰還抵抗５．１のＮＯＲゲー
トＩＣの入力２と１のＮ。1 is an inverter gate IC (in this example, a NOR gate IC) having multiple inputs, and its input terminal 2 and output terminal 4
N of the inputs 2 and 1 of the NOR gate IC with a feedback resistor 5.1 connected in parallel between.
ＲゲートＩＣの出力４より、ドレイン抵抗６を介して接
続される、水晶振動子接触用可動式接点１０、その両端
をゲートコンデンサー７、ドレインコンデンサー８を介
して接地し、可動式接点により、９の水晶振動子に接続
する発振回路部と、その発振回路の１のＮＯＲゲートＩ
Ｃの入力３に、１０の可動式接点の動作検出回路１１に
より検出波形Ａが発生し、その検出波形Ａを受けた、タ
イミング発生回路１２より、タイミング波形Ｂを発生し
、そのタイミング波形Ｂと、１６標準信号発生装置（本
例では、圧電発振回路）より、常時９の水晶振動子と同
一もしくは、近似周波数を出力波形Ｃを、１４複数入力
のゲートＩＣ（本例ではＮＯＲゲートＩＣ〕により、Ｎ
ＯＨされた波形りを短時間入力する事により、９の水晶
振動子を強制的に振動させ、その後自立発振を開始する
。A movable contact 10 for crystal resonator contact is connected to the output 4 of the R gate IC via a drain resistor 6, both ends of which are grounded via a gate capacitor 7 and a drain capacitor 8. The oscillation circuit section connected to the crystal resonator and the NOR gate I of the oscillation circuit
A detection waveform A is generated at the input 3 of C by the operation detection circuit 11 of 10 movable contacts, and a timing waveform B is generated from the timing generation circuit 12 which receives the detection waveform A. , 16 standard signal generator (piezoelectric oscillation circuit in this example) outputs waveform C that always has the same or approximate frequency as the crystal oscillator 9, and 14 multiple input gate IC (NOR gate IC in this example) , N
By inputting the OH waveform for a short time, the crystal resonator 9 is forced to vibrate, and then independent oscillation is started.
（波形図Ｅ）
以上により、水晶振動子が、可動式接点に接触後、短時
間に発振が起動し、周波数が安定する。(Waveform diagram E) As described above, after the crystal resonator contacts the movable contact, oscillation starts in a short time and the frequency becomes stable.
したがって、この圧電発振回路を水晶振動子の測定工程
において、発振の起動がはやく、安定も早いので、測定
のサイクルタイムが短（なるという効果がある。Therefore, in the process of measuring a crystal resonator using this piezoelectric oscillation circuit, oscillation starts quickly and stabilizes quickly, which has the effect of shortening the measurement cycle time.
本発明の圧電発振回路の第２の実施例を圧電発振回路と
して水晶発振回路をもちいた例を圧電発振器に応用した
場合を第６図１回路図により説明する。A second embodiment of the piezoelectric oscillation circuit of the present invention in which a crystal oscillation circuit is used as the piezoelectric oscillation circuit is applied to a piezoelectric oscillator will be described with reference to the circuit diagram in FIG. 6.
２１は、複数入力をもつインバーターゲートＩＣ（本例
では、ＮＯＲゲートＩＣ）で、その入力端子２２と出力
端子２４との間に並列に接続される帰還抵抗２５．２２
のＮＯＲゲートＩＣの入力２２と出力２４より、ドレイ
ン抵抗６を介して接続される、水晶振動子２９、その両
端より、ゲートコンデンサー２７．ドレインコンデンサ
ー２８、を介して接地する圧電発振回路と、その圧電発
振回路の２１の入力２３に、３１のタイミング発生回路
により電源投入時に短時間の／ぐルス信号と標準信号発
生回路とし起動特性のよい発振回路６２により、２９水
晶振動子と同一もしくは、近似周波数を発生させ、５３
複数入力をもつ、ゲートＩＣ（本例ではＮＯＲゲートＩ
Ｃ）により、ＮＯＲする事により、短時間、２９の水晶
振動子と同一もしくは、近似の波形を入力し、２９の水
晶振動子を強制的に振動させ、その後自立発振を開始さ
せる。21 is an inverter gate IC (in this example, a NOR gate IC) having multiple inputs, and feedback resistors 25 and 22 are connected in parallel between the input terminal 22 and the output terminal 24.
A crystal oscillator 29 is connected to the input 22 and output 24 of the NOR gate IC via a drain resistor 6, and a gate capacitor 27. A piezoelectric oscillation circuit is connected to the ground via a drain capacitor 28, and a timing generation circuit 31 generates a short-time signal and a standard signal generation circuit to control the startup characteristics. A good oscillation circuit 62 generates the same or approximate frequency as the 29 crystal oscillator, and the 53
A gate IC with multiple inputs (in this example, a NOR gate I
By performing NOR using C), the same or approximate waveform as that of the crystal oscillator 29 is input for a short period of time, the crystal oscillator 29 is forcibly vibrated, and then independent oscillation is started.
以上により、圧電発振回路の電源投入時に、短時間に発
振が起動し、周波数が安定する。As described above, when the piezoelectric oscillation circuit is powered on, oscillation starts in a short time and the frequency becomes stable.
したがって、この圧電発振回路を、リモコン等の起動特
性を問題とし、また、周波数精度を必要とする電子機器
用の発振器として使用した場合、水晶発振器でありなが
ら、セラミック発振器並の起動特性をもち、セラミック
発振器より周波数安定度の良い圧電発振器ができる。Therefore, when this piezoelectric oscillator circuit is used as an oscillator for electronic devices that have problems with the starting characteristics of remote controllers and require frequency accuracy, even though it is a crystal oscillator, it has starting characteristics comparable to that of a ceramic oscillator. A piezoelectric oscillator with better frequency stability than a ceramic oscillator can be created.
また、この圧電発振回路を、発振開始時に０１値が大き
く、−度発振が安定するとＣＩ値が、小さくなる特性を
もつ水晶振動子等の圧電発振器に使用すると、ＣＸ値が
太き（ても発振を起動できる圧電発振回路が得られる。Furthermore, if this piezoelectric oscillator circuit is used in a piezoelectric oscillator such as a crystal resonator, which has a large 01 value at the start of oscillation and a small CI value when -degree oscillation stabilizes, the CX value will be large (even A piezoelectric oscillation circuit capable of starting oscillation is obtained.
本発明の第１．第２の実施例において、１と２１の複数
入力のインバーターゲートＩＣは、ＮＯＲゲートで説明
したがＮＡＮＤゲート等でもかまわない。The first aspect of the present invention. In the second embodiment, the inverter gate IC having multiple inputs 1 and 21 is described as a NOR gate, but it may be a NAND gate or the like.
また、１４と３３の複数入力のゲートエＯは、ＯＲゲー
ト、ＡＮＤゲート、ＮＡＮＤゲート等でもよい。Further, the multiple input gates 14 and 33 may be an OR gate, an AND gate, a NAND gate, or the like.
また、１６の標準信号発生装置は、圧電発振回路（圧電
振動子は、水晶振動子、セラミック振動子、タンタル酸
リチウム振動子等）、ｃＲ発振回路、ＬＯ発振回路、等
である。The 16 standard signal generating devices include a piezoelectric oscillation circuit (the piezoelectric oscillator is a crystal oscillator, a ceramic oscillator, a lithium tantalate oscillator, etc.), a cR oscillation circuit, an LO oscillation circuit, and the like.
また、３２の起動特性のよい発振回路は、ＯＲ発振回路
、ＬＯ発振回路、セラミック振動子、タンタル酸リチウ
ム振動子を用いた圧電発振回路等である。The 32 oscillation circuits with good starting characteristics include an OR oscillation circuit, an LO oscillation circuit, a ceramic resonator, a piezoelectric oscillation circuit using a lithium tantalate resonator, and the like.
［発明の効果］
以上に示す本発明によれば、発振開始時における、発振
の起動が早く、また周波数安定の早い圧電発振回路が得
られる。[Effects of the Invention] According to the present invention described above, it is possible to obtain a piezoelectric oscillation circuit that starts oscillation quickly at the time of starting oscillation and quickly stabilizes the frequency.
第１図は、本発明の圧電発振回路の第１の実施例の回路
図、第２図はそのタイミングチャート図、第６図は、本
発明の圧電発振回路の第２の実施例の回路図、第４図は
従来の圧電発振回路の回路図である。
１２１・・・・・−・・・複数入力のＮＯＲゲートＩＣ
２，２２・・・・・−・・・ＮＯＲゲートの一方の入力
６．２３・・・・・−・・・ＩＪＯＲゲートの一方の入
力４．２４・・・・・・・・・ＮＯＲゲートの出力５．
２５．９２・・・・・・帰還抵抗
６．２６．９５・−・・・・ドレイン抵抗７．２７．９
４・・・・・・ゲートコンデンサー８．２８．９５・・
・・・・ドレインコンデンサー９．２９，９６・・・・
・・水晶振動子１０・・−・・・・・・可動式接点
１１・・・・−・・・・可動式接点動作検出回路１２
ｅ ３１・・・・・・タイミング発生回路１３・・・・
・・・・・標準信号発生装置１４、 、３３・・・・・
・複数入力のゲートＩＣ３２・・・・・・・・・起動特
性のよい発振回路９１・−・・・・・・・インバーター
ＩＣ第１図
＄２図
１８８図
第４図FIG. 1 is a circuit diagram of a first embodiment of the piezoelectric oscillation circuit of the present invention, FIG. 2 is a timing chart thereof, and FIG. 6 is a circuit diagram of a second embodiment of the piezoelectric oscillation circuit of the present invention. , FIG. 4 is a circuit diagram of a conventional piezoelectric oscillation circuit. 121・・・・・・Multiple input NOR gate IC
2, 22...One input of the NOR gate 6.23...One input of the IJOR gate 4.24...NOR gate Output of 5.
25.92...Feedback resistance 6.26.95...Drain resistance 7.27.9
4...Gate capacitor 8.28.95...
...Drain capacitor 9.29,96...
...Crystal oscillator 10...Movable contact 11...Movable contact operation detection circuit 12
e 31... Timing generation circuit 13...
...Standard signal generator 14, , 33...
・Multi-input gate IC 32...Oscillator circuit 91 with good starting characteristics---Inverter IC Fig. 1 $2 Fig. 188 Fig. 4
Claims (3)
Ｃを複数入力のインバーターＩＣにし、その一方の入力
と出力間に、圧電振動子を接続し、発振回路を構成し、
もう一方の入力に、発振開始時に、短時間、圧電振動子
と同一もしくは、近似の周波数を標準信号発生装置によ
り入力する事を特徴とする圧電発振回路。(1) In a piezoelectric oscillation circuit, the inverter I of the oscillation stage
Make C an inverter IC with multiple inputs, connect a piezoelectric vibrator between one input and output, and configure an oscillation circuit.
A piezoelectric oscillator circuit characterized in that, at the start of oscillation, the same or similar frequency as that of the piezoelectric vibrator is inputted to the other input for a short time using a standard signal generator.
もしくは近似の周波数を入力するためのタイミング発生
回路追加し、電源投入時に一定時間入力する、事を特徴
とする請求項１記載の圧電発振回路。(2) A timing generation circuit is added to one input of the piezoelectric oscillator circuit for inputting the same or approximate frequency as that of the piezoelectric vibrator, and the input is input for a certain period of time when the power is turned on. Piezoelectric oscillation circuit.
もしくは近似の周波数を入力する為のタイミング発生回
路追加し圧電振動子の装着時に一定時間入力する、事を
特徴とする請求項１記載の圧電発振回路。(3) A timing generation circuit is added to one input of the piezoelectric oscillator circuit for inputting the same or approximate frequency as that of the piezoelectric vibrator, and the input is input for a certain period of time when the piezoelectric vibrator is attached. The piezoelectric oscillator circuit described.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2641990A JPH03231504A (en) | 1990-02-06 | 1990-02-06 | Piezoelectric oscillation circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2641990A JPH03231504A (en) | 1990-02-06 | 1990-02-06 | Piezoelectric oscillation circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03231504A true JPH03231504A (en) | 1991-10-15 |
Family
ID=12193016
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2641990A Pending JPH03231504A (en) | 1990-02-06 | 1990-02-06 | Piezoelectric oscillation circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03231504A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008102019A (en) * | 2006-10-19 | 2008-05-01 | Daishinku Corp | Oscillation device and oscillation method for tuning fork type piezoelectric transducing device |
| JP2009188738A (en) * | 2008-02-06 | 2009-08-20 | Nippon Telegr & Teleph Corp <Ntt> | Crystal oscillator with start control circuit and phase synchronization circuit |
| US7888984B2 (en) | 2005-08-23 | 2011-02-15 | Panasonic Corporation | Intermittent operation circuit and modulation device |
-
1990
- 1990-02-06 JP JP2641990A patent/JPH03231504A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7888984B2 (en) | 2005-08-23 | 2011-02-15 | Panasonic Corporation | Intermittent operation circuit and modulation device |
| JP2008102019A (en) * | 2006-10-19 | 2008-05-01 | Daishinku Corp | Oscillation device and oscillation method for tuning fork type piezoelectric transducing device |
| JP2009188738A (en) * | 2008-02-06 | 2009-08-20 | Nippon Telegr & Teleph Corp <Ntt> | Crystal oscillator with start control circuit and phase synchronization circuit |
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