JPS55106389A - Crystal watch - Google Patents

Crystal watch

Info

Publication number
JPS55106389A
JPS55106389A JP1399179A JP1399179A JPS55106389A JP S55106389 A JPS55106389 A JP S55106389A JP 1399179 A JP1399179 A JP 1399179A JP 1399179 A JP1399179 A JP 1399179A JP S55106389 A JPS55106389 A JP S55106389A
Authority
JP
Japan
Prior art keywords
compensation
crystal
crystal oscillator
coefficient
circuit
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
JP1399179A
Other languages
Japanese (ja)
Inventor
Michiaki Takagi
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 Epson Corp
Suwa Seikosha KK
Original Assignee
Seiko Epson Corp
Suwa Seikosha KK
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 Epson Corp, Suwa Seikosha KK filed Critical Seiko Epson Corp
Priority to JP1399179A priority Critical patent/JPS55106389A/en
Publication of JPS55106389A publication Critical patent/JPS55106389A/en
Pending legal-status Critical Current

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Abstract

PURPOSE: To obtain a high-accuracy time standard source for the crystal watch in which the temperature compensation is given in the logic system and via two units of crystal oscillators, by giving the compensation to the secondary and the third temperature coefficients of the crystal oscillator.
CONSTITUTION: Beat freqency output 22 of main and secondary crystal oscillators 01 and 02 form the pulse which gives compensation to the secondary temperature coefficient of the crystal oscillator along with divider circuit 41, preset timer circuit 42 and secondary coefficient compensating interruption control circuit 31 each. Then the addition is given to the divided 13 frequency to give compensation to the frequency variation due to the secondary temperature coefficient of the crystal oscillator. At the same time, beat frequency 22 forms the signal to erase the third temperature coefficient of the crystal oscillator via divider circuits 61 and 62, preset timer circuits 63 and 64 plus third coefficient compensating interruption circuit 32. Thus the interruption equivalent to the number of the compensation pulses or the erasion is carried out.
COPYRIGHT: (C)1980,JPO&Japio
JP1399179A 1979-02-09 1979-02-09 Crystal watch Pending JPS55106389A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1399179A JPS55106389A (en) 1979-02-09 1979-02-09 Crystal watch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1399179A JPS55106389A (en) 1979-02-09 1979-02-09 Crystal watch

Publications (1)

Publication Number Publication Date
JPS55106389A true JPS55106389A (en) 1980-08-15

Family

ID=11848690

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1399179A Pending JPS55106389A (en) 1979-02-09 1979-02-09 Crystal watch

Country Status (1)

Country Link
JP (1) JPS55106389A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010203422A (en) * 2009-03-06 2010-09-16 Anlet Co Ltd Roots type vacuum pump
CN106802843A (en) * 2015-12-22 2017-06-06 中国电子科技集团公司第二十研究所 A kind of CPCI interrupts the compensation method lost

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010203422A (en) * 2009-03-06 2010-09-16 Anlet Co Ltd Roots type vacuum pump
CN106802843A (en) * 2015-12-22 2017-06-06 中国电子科技集团公司第二十研究所 A kind of CPCI interrupts the compensation method lost

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