JP2003232876A5 - - Google Patents
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- JP2003232876A5 JP2003232876A5 JP2002031065A JP2002031065A JP2003232876A5 JP 2003232876 A5 JP2003232876 A5 JP 2003232876A5 JP 2002031065 A JP2002031065 A JP 2002031065A JP 2002031065 A JP2002031065 A JP 2002031065A JP 2003232876 A5 JP2003232876 A5 JP 2003232876A5
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- JP
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- Prior art keywords
- count
- oscillator
- correction
- clock
- count value
- Prior art date
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Description
【0007】
【課題を解決するための手段】
本発明は上記目的を達成するためになされたものである。本発明のシステム制御用発振子及び時計カウント用発振子を備えるシステムにおける時計補正装置は、電源のオン/オフに関係なく、所定時間間隔で前記システム制御用発振子から信号を出力させ、前記時計カウント用発振子のカウント値と前記システム制御用発振子のカウント値とを用いて、前記時計カウント用発振子の出力周波数の誤差を測定し、測定した誤差に基づいて、前記時計カウント用発振子のカウント値を補正する。
[0007]
[Means for Solving the Problems]
The present invention has been made to achieve the above object. A clock correction device in a system including the system control oscillator and the clock count oscillator according to the present invention causes the system control oscillator to output a signal at predetermined time intervals regardless of power on / off, and the clock The error of the output frequency of the timepiece count oscillator is measured using the count value of the counting oscillator and the count value of the system control oscillator, and the timepiece count oscillator is measured based on the measured error. Correct the count value of.
Claims (3)
電源のオン/オフに関係なく、所定時間間隔で前記システム制御用発振子から信号を出力させ、前記時計カウント用発振子のカウント値と前記システム制御用発振子のカウント値とを用いて、前記時計カウント用発振子の出力周波数の誤差を測定する手段と、
測定した誤差に基づいて、前記時計カウント用発振子のカウント値を補正する手段と、
を具備することを特徴とする時計補正装置。A clock correction device in a system including a system control oscillator and a watch count oscillator,
The signal is output from the system control oscillator at predetermined time intervals regardless of power on / off, and the count value of the clock count oscillator and the count value of the system control oscillator are used to Means for measuring the error of the output frequency of the clock count oscillator;
A means for correcting the count value of the clock count oscillator based on the measured error;
A clock correction device comprising:
前記補正手段は、測定した誤差を、前記所定時間間隔の間の補正値に換算し、この換算値により前記補正を行う請求項1に記載の時計補正装置。The measuring means measures the count value of the system control oscillator based on the count value of the clock count oscillator, and compares the measured count value with the theoretical count value of the system control oscillator. Measure the error by
The timepiece correction device according to claim 1, wherein the correction unit converts the measured error into a correction value during the predetermined time interval, and performs the correction using the conversion value.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2002031065A JP2003232876A (en) | 2002-02-07 | 2002-02-07 | Time correction device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2002031065A JP2003232876A (en) | 2002-02-07 | 2002-02-07 | Time correction device |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2003232876A JP2003232876A (en) | 2003-08-22 |
JP2003232876A5 true JP2003232876A5 (en) | 2005-06-09 |
Family
ID=27774578
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2002031065A Pending JP2003232876A (en) | 2002-02-07 | 2002-02-07 | Time correction device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2003232876A (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5238144B2 (en) * | 2006-05-12 | 2013-07-17 | 矢崎総業株式会社 | Clock error correction method |
JP5306512B1 (en) | 2012-04-27 | 2013-10-02 | ラピスセミコンダクタ株式会社 | Semiconductor device, measuring instrument, and correction method |
KR101795199B1 (en) * | 2013-03-29 | 2017-11-07 | 미쓰비시덴키 가부시키가이샤 | Signal processing device |
JP6135539B2 (en) * | 2014-02-13 | 2017-05-31 | 株式会社デンソー | Electronic control unit |
EP2916193B1 (en) * | 2014-03-06 | 2016-07-27 | EM Microelectronic-Marin SA | Time base including an oscillator, a frequency-divider circuit and a timing pulse inhibition circuit |
-
2002
- 2002-02-07 JP JP2002031065A patent/JP2003232876A/en active Pending
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