JPS55163482A - Time standard generator - Google Patents

Time standard generator

Info

Publication number
JPS55163482A
JPS55163482A JP7158279A JP7158279A JPS55163482A JP S55163482 A JPS55163482 A JP S55163482A JP 7158279 A JP7158279 A JP 7158279A JP 7158279 A JP7158279 A JP 7158279A JP S55163482 A JPS55163482 A JP S55163482A
Authority
JP
Japan
Prior art keywords
oscillator
frequency
harmonic
secondary higher
higher harmonic
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
Application number
JP7158279A
Other languages
Japanese (ja)
Inventor
Hideo Hoshi
Hirochika Sato
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.)
Seiko Instruments Inc
Original Assignee
Seiko Instruments Inc
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 Seiko Instruments Inc filed Critical Seiko Instruments Inc
Priority to JP7158279A priority Critical patent/JPS55163482A/en
Publication of JPS55163482A publication Critical patent/JPS55163482A/en
Pending legal-status Critical Current

Links

Landscapes

  • Oscillators With Electromechanical Resonators (AREA)
  • Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
  • Electric Clocks (AREA)

Abstract

PURPOSE: To carry out a temperature correction on a miniature device by extracting two kinds of frequency signals from one piezo-oscillator for which a free end of an oscillating arm is wide narrower than the base side.
CONSTITUTION: A width w0 of a free end of an oscillating arm of one tuning fork crystal oscillator is shaped narrow as compared with a width w of its base side, and two kinds of frequency signals of fundamental harmonic and secondary higher harmonic are extracted to correct temperature characteristic. Namely, by selecting w/w0 so as to have f2/f1 at an integral number, f1 and f2 being frequencies of fundamental harmonic and secondary higher harmonic respectively which are obtained through oscillation circuits 3a, 3b by the oscillator, a frequency f2' of secondary higher harmonic after frequency division 4 and the fundamental harmonic frequency f1 can easily be made coincident, and a difference Δf between f1 and f2 obtained through a beat circuit 5 may represent a value corresponding to a temperature. Therefore, from obtaining a correction factor fc through Δf and subjecting it to pulse control 7 to divide 8 f1+fc, a stable time standard signal is obtainable extensively on a miniature device available by single oscillator.
COPYRIGHT: (C)1980,JPO&Japio
JP7158279A 1979-06-07 1979-06-07 Time standard generator Pending JPS55163482A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7158279A JPS55163482A (en) 1979-06-07 1979-06-07 Time standard generator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7158279A JPS55163482A (en) 1979-06-07 1979-06-07 Time standard generator

Publications (1)

Publication Number Publication Date
JPS55163482A true JPS55163482A (en) 1980-12-19

Family

ID=13464824

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7158279A Pending JPS55163482A (en) 1979-06-07 1979-06-07 Time standard generator

Country Status (1)

Country Link
JP (1) JPS55163482A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005076471A1 (en) * 2004-02-10 2005-08-18 Citizen Watch Co., Ltd. Crystal piece and oscillator
JP2012070451A (en) * 2011-12-26 2012-04-05 Seiko Epson Corp Vibration piece and device
JP2013066211A (en) * 2012-11-15 2013-04-11 Seiko Epson Corp Vibration piece, vibrator, oscillator, sensor and device
JP2013066210A (en) * 2012-11-15 2013-04-11 Seiko Epson Corp Vibration piece, vibrator, oscillator, sensor and device

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005076471A1 (en) * 2004-02-10 2005-08-18 Citizen Watch Co., Ltd. Crystal piece and oscillator
US7986077B2 (en) 2004-02-10 2011-07-26 Citizen Holdings Co., Ltd. Tuning fork type quartz piece and oscillator comprising such tuning fork type quartz piece
JP2012070451A (en) * 2011-12-26 2012-04-05 Seiko Epson Corp Vibration piece and device
JP2013066211A (en) * 2012-11-15 2013-04-11 Seiko Epson Corp Vibration piece, vibrator, oscillator, sensor and device
JP2013066210A (en) * 2012-11-15 2013-04-11 Seiko Epson Corp Vibration piece, vibrator, oscillator, sensor and device

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