JPS55106389A - Crystal watch - Google Patents
Crystal watchInfo
- 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
Links
Landscapes
- Electric Clocks (AREA)
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
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)
| 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 |
-
1979
- 1979-02-09 JP JP1399179A patent/JPS55106389A/en active Pending
Cited By (2)
| 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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