JP2001235570A - Time correcting method for high accuracy timepiece device - Google Patents
Time correcting method for high accuracy timepiece deviceInfo
- Publication number
- JP2001235570A JP2001235570A JP2000105705A JP2000105705A JP2001235570A JP 2001235570 A JP2001235570 A JP 2001235570A JP 2000105705 A JP2000105705 A JP 2000105705A JP 2000105705 A JP2000105705 A JP 2000105705A JP 2001235570 A JP2001235570 A JP 2001235570A
- Authority
- JP
- Japan
- Prior art keywords
- time
- timepiece device
- correction signal
- error
- high accuracy
- 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
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- Electric Clocks (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は時刻修正時計装置に
おいて、安価な装置でもより高い精度を得るための時刻
修正方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a time adjustment method for a time adjustment clock device for obtaining higher accuracy even with an inexpensive device.
【０００２】[0002]
【従来の技術】電波修正時計や電話回線等のオンライン
による時刻修正の方法は、従来受信した時刻修正用の信
号が絶対正確であるものとして扱われて、時計装置の時
刻修正を行っている。2. Description of the Related Art In a method of time correction on-line such as a radio-controlled timepiece or a telephone line, a conventionally received time correction signal is treated as being absolutely accurate, and the time of a clock device is corrected.
【０００３】しかし、これらの信号をマイクロ秒単位の
時間で観測すると、数マイクロ秒からミリ秒単位のジッ
タ（時間のゆらぎ）が観測されている。However, when these signals are observed in a microsecond time, jitters (time fluctuations) in the range of several microseconds to milliseconds are observed.
【０００４】該出願人が特許登録済みの特許第１９０９
５４２号「源発振周波数を自動補正する水晶時計装置」
においても、正確に時刻修正用の信号を検出する方法が
取られているが、時刻修正をする度に数マイクロ秒から
ミリ秒単位のジッタが観測されている。The applicant has registered a patent No. 1909.
No. 542 “Quartz clock device that automatically corrects source oscillation frequency”
In this method, a method for accurately detecting a signal for time correction is employed, but jitters of several microseconds to millisecond units are observed each time the time is corrected.
【０００５】比較的にジッタが少ないとされている長波
帯標準電波（ＪＪＹ）は、殆ど雑音が無い良好な受信状
態では、数マイクロ秒以下のジッタの信号を受信するこ
とができるが、信号対雑音比が悪い状態で受信した場合
は、数十ミリ秒以上のジッタを含んで受信される。A long-wave band standard radio wave (JJY), which is considered to have relatively little jitter, can receive a signal with a jitter of several microseconds or less in a good reception state with almost no noise. If the signal is received in a state where the noise ratio is poor, the signal is received with jitter of several tens of milliseconds or more.
【０００６】インターネット等のオンラインによる時刻
修正信号は、データ圧縮の影響や回線経路の違いによ
り、数十ミリ秒以上のジッタが観測される。[0006] In a time correction signal on-line such as the Internet, jitter of several tens of milliseconds or more is observed due to the influence of data compression and a difference in a circuit path.
【０００７】これらの時刻修正信号により時刻を修正す
る時計装置は、長時間の単位では正確な時刻を刻むが、
時刻合わせを行う度に数マイクロ秒からミリ秒単位のジ
ッタが発生する問題がある。A clock device that corrects the time using these time correction signals keeps accurate time in a long time unit.
There is a problem that jitter of several microseconds to milliseconds is generated every time the time is adjusted.
【０００８】[0008]
【発明が解決しようとする課題】従来、誤差が数マイク
ロ秒以下の高精度の時計装置はセシウム発振器やルビジ
ウム発振器等の高価な源発振装置が必要であった。Conventionally, a high-precision timepiece device having an error of several microseconds or less requires an expensive source oscillation device such as a cesium oscillator or a rubidium oscillator.
【０００９】安価な水晶発振器を源発振とする時計装置
でも、本発明による時刻修正の方法により、ジッタが殆
どない誤差が数マイクロ秒以下の高精度の時計装置を実
現することができる。Even with a timepiece using an inexpensive crystal oscillator as a source oscillation, the time correction method according to the present invention can realize a highly accurate timepiece with little jitter and an error of several microseconds or less.
【００１０】[0010]
【課題を解決するための手段】標準電波のタイムコード
や日本放送協会が放送している時報音、及び電話回線等
のオンラインによる正確な時刻信号を使用して、更に高
い精度で時計装置の時刻を修正する手段として、受信し
た時刻修正信号により直接時刻修正をするのでなく、時
刻修正信号と該時計装置との時間誤差率を演算し、過去
の誤差率を含めた平均演算を行った誤差率をもって、源
発振器の周波数を徐々に微調整する方法により、ジッタ
が殆ど無い高い精度の時計装置を実現することができ
る。Means for Solving the Problems The time code of the clock device can be further improved by using a time code of a standard radio wave, a time signal sound broadcast by the Japan Broadcasting Corporation, and an accurate time signal online such as a telephone line. As a means for correcting the error rate, instead of directly adjusting the time using the received time adjustment signal, the time error rate between the time adjustment signal and the clock device is calculated, and the error rate obtained by performing an average calculation including the past error rate is calculated. Thus, by a method of gradually fine-tuning the frequency of the source oscillator, it is possible to realize a high-precision timepiece device having almost no jitter.
【００１１】[0011]
【発明の実施の形態】発明の実施の形態を電波修正時計
装置の実施例にもとづき図面を参照して説明する。図１
において、標準電波受信機（１）、マイクロプロセッサ
（２）、記憶装置（３）、表示器（４）、Ｄ／Ａコンバ
ータ（５）、電圧制御水晶発振器（６）、時刻信号出力
部（７）、電源部（８）で構成している電波修正時計装
置である。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described based on embodiments of a radio-controlled timepiece with reference to the drawings. FIG.
, A standard radio receiver (1), a microprocessor (2), a storage device (3), a display (4), a D / A converter (5), a voltage controlled crystal oscillator (6), a time signal output unit (7) ), A radio-controlled timepiece device comprising a power supply section (8).
【００１２】標準電波受信機（１）で受信したタイムコ
ード信号はマイクロプロセッサ（２）により解読して時
計を構成し、表示器（４）により時刻を表示する。The time code signal received by the standard radio receiver (1) is decoded by the microprocessor (2) to form a clock, and the time is displayed by the display (4).
【００１３】次に、再度受信したタイムコード信号は時
刻修正信号とするが、直接該時計装置の時刻を修正しな
いで、時刻修正信号と該時計装置の時刻との誤差を検出
し、誤差率として記憶装置（３）にこのデータを保存す
る。Next, the time code signal received again is used as a time correction signal, but without directly correcting the time of the clock device, an error between the time correction signal and the time of the clock device is detected, and the error rate is determined. This data is stored in the storage device (3).
【００１４】この誤差率のデータがある一定の数になっ
た時、これらの平均値を演算し、その結果に従って、電
圧制御水晶発振器（６）の周波数を徐々に微調整する為
の演算を行い、Ｄ／Ａコンバータ（５）に修正データを
出力する。When the data of the error rate becomes a certain number, the average value is calculated, and according to the result, a calculation for gradually fine-tuning the frequency of the voltage controlled crystal oscillator (6) is performed. , And outputs the correction data to the D / A converter (5).
【００１５】この作業を繰り返し行うことにより、電圧
制御水晶発振器（６）は高い精度で基準周波数に近づ
き、ジッタが殆ど無い正確な時計装置を構成することが
できる。By repeating this operation, the voltage controlled crystal oscillator (6) approaches the reference frequency with high accuracy, and an accurate timepiece with almost no jitter can be constructed.
【００１６】[0016]
【発明の効果】本発明は、上記説明したように構成され
ているので、以下に記載されるような効果を奏する。Since the present invention is configured as described above, it has the following effects.
【００１７】時刻修正信号により直接、該時計装置の時
刻を合わさないので、ジッタが発生しないだけでなく、
受信した時刻修正信号のジッタを平均化するので、検出
誤差が相殺されて、正確な時刻修正が可能である。Since the time of the clock device is not directly adjusted by the time correction signal, not only does jitter not occur, but also
Since the jitter of the received time adjustment signal is averaged, the detection error is cancelled, and accurate time adjustment is possible.
【００１８】時刻修正信号と該時計時刻との誤差率の平
均値で、これに見合った源発振器の周波数を微調整する
ので、源発振器の経時変化も修正する。Since the frequency of the source oscillator corresponding to the average value of the error rate between the time correction signal and the clock time is finely adjusted, the temporal change of the source oscillator is also corrected.
【００１９】セシウム発振器やルビジウム発振器等の高
価な源発振装置を使用しなくても、安価な電圧制御水晶
発振器でルビジウム発振器を使用している高価な時計装
置に匹敵する高精度の時計装置を実現することができ
る。Even if an expensive source oscillation device such as a cesium oscillator or a rubidium oscillator is not used, a high-precision timepiece device comparable to an expensive timepiece device using a rubidium oscillator with an inexpensive voltage-controlled crystal oscillator is realized. can do.
【図１】電波修正時計装置のブロック図FIG. 1 is a block diagram of a radio-controlled timepiece.
１ 標準電波受信機 ２ マイクロプロセッサ ３ 記憶装置 ４ 表示器 ５ Ｄ／Ａコンバータ ６ 電圧制御水晶発振器 ７ 時刻信号出力部 ８ 電源部 DESCRIPTION OF SYMBOLS 1 Standard radio receiver 2 Microprocessor 3 Storage device 4 Display 5 D / A converter 6 Voltage controlled crystal oscillator 7 Time signal output part 8 Power supply part
Claims (2)
インによる時刻修正時計装置において、時刻修正信号に
より一度時刻を合わせた後には、次からの時刻修正信号
では直接時刻合わせをしないで、時計装置の時刻と時刻
修正信号との時間誤差を検出し、該時計装置の源発振周
波数を時間誤差に相当する分の周波数を微調整して時刻
修正する方法。In a radio-controlled timepiece device or an on-line time-correction timepiece device such as a telephone line, once the time is adjusted by a time-correction signal, the time is not directly adjusted by a subsequent time-correction signal. A time error between the time and the time correction signal, and fine-tuning the source oscillation frequency of the timepiece device to a frequency corresponding to the time error to correct the time.
置の時刻と時刻修正信号との時間誤差率を記録し、これ
らの時間誤差率の平均化演算した値を該時計装置の誤差
率として、これに従って源発振周波数に相当する分の周
波数を徐々に微調整して時刻修正する方法。2. Each time a time correction signal is received, a time error rate between the time of the clock device and the time correction signal is recorded, and a value obtained by averaging these time error rates is used as an error rate of the clock device. According to this method, the frequency corresponding to the source oscillation frequency is gradually finely adjusted to correct the time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000105705A JP2001235570A (en) | 2000-02-22 | 2000-02-22 | Time correcting method for high accuracy timepiece device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000105705A JP2001235570A (en) | 2000-02-22 | 2000-02-22 | Time correcting method for high accuracy timepiece device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2001235570A true JP2001235570A (en) | 2001-08-31 |
Family
ID=18618997
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000105705A Pending JP2001235570A (en) | 2000-02-22 | 2000-02-22 | Time correcting method for high accuracy timepiece device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2001235570A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009060315A (en) * | 2007-08-31 | 2009-03-19 | National Institute Of Advanced Industrial & Technology | Method and apparatus for reducing phase error in remote clock |
| CN101995816A (en) * | 2010-10-25 | 2011-03-30 | 珠海精准电子有限公司 | Automatic clock calibration method and automatic clock calibration device |
| JP2021076433A (en) * | 2019-11-07 | 2021-05-20 | セイコーソリューションズ株式会社 | Clock adjustment device, program, and clock adjustment method |
| JP2021076434A (en) * | 2019-11-07 | 2021-05-20 | セイコーソリューションズ株式会社 | Clock adjustment device, method, and program |
-
2000
- 2000-02-22 JP JP2000105705A patent/JP2001235570A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009060315A (en) * | 2007-08-31 | 2009-03-19 | National Institute Of Advanced Industrial & Technology | Method and apparatus for reducing phase error in remote clock |
| CN101995816A (en) * | 2010-10-25 | 2011-03-30 | 珠海精准电子有限公司 | Automatic clock calibration method and automatic clock calibration device |
| JP2021076433A (en) * | 2019-11-07 | 2021-05-20 | セイコーソリューションズ株式会社 | Clock adjustment device, program, and clock adjustment method |
| JP2021076434A (en) * | 2019-11-07 | 2021-05-20 | セイコーソリューションズ株式会社 | Clock adjustment device, method, and program |
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