JPS57116287A - Electronic watch - Google Patents
Electronic watchInfo
- Publication number
- JPS57116287A JPS57116287A JP185981A JP185981A JPS57116287A JP S57116287 A JPS57116287 A JP S57116287A JP 185981 A JP185981 A JP 185981A JP 185981 A JP185981 A JP 185981A JP S57116287 A JPS57116287 A JP S57116287A
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- signal
- highly accurate
- error
- electronic watch
- 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
Classifications
-
- G—PHYSICS
- G04—HOROLOGY
- G04G—ELECTRONIC TIME-PIECES
- G04G3/00—Producing timing pulses
- G04G3/02—Circuits for deriving low frequency timing pulses from pulses of higher frequency
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
- Electric Clocks (AREA)
- Oscillators With Electromechanical Resonators (AREA)
Abstract
PURPOSE:To obtain the electronic watch characterized by a highly accurate error of one second or less per year by limiting the range of the operating temperature of an AT oscillator in a high frequency oscillating circuit through a temperature detecting device and the like, thereby reducing increase in power consumption. CONSTITUTION:The reference frequency signal for counting from a low frequency oscillator 1 and the frequency of the calibrating signal from a high frequency oscillation control circuit 6 are compared in a comparator 8. An aging error signal is applied to a compensating circuit 2, and the aging error of the reference frequency signal from the circuit 1 and the like are compensated. Meanwhile, the compensating operation of the circuit 2 and an oscillation control circuit 7 which controls the circuits 8 and 6 are activated by a specified temperature range detecting signal from a temperature detector 4. Therefore the circuit 6 and the like are operated only when the range of the operating temperature of the AT cut crystal oscillator in the circuit 6 is limited and the highly accurate compensation can be performed. As a result, increase in the power consumption is reduced and the electronic watch having the highly accurate error of one second per year and the like can be obtained.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP185981A JPS57116287A (en) | 1981-01-09 | 1981-01-09 | Electronic watch |
| US06/337,222 US4443116A (en) | 1981-01-09 | 1982-01-06 | Electronic timepiece |
| GB8200652A GB2095005B (en) | 1981-01-09 | 1982-01-11 | Electronic timepiece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP185981A JPS57116287A (en) | 1981-01-09 | 1981-01-09 | Electronic watch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS57116287A true JPS57116287A (en) | 1982-07-20 |
Family
ID=11513265
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP185981A Pending JPS57116287A (en) | 1981-01-09 | 1981-01-09 | Electronic watch |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57116287A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5767747A (en) * | 1995-08-18 | 1998-06-16 | International Business Machines Corporation | Electronic low power clock circuit and method |
| JP2013232545A (en) * | 2012-04-27 | 2013-11-14 | Lapis Semiconductor Co Ltd | Semiconductor device, measurement instrument and correction method |
| JP2018146393A (en) * | 2017-03-06 | 2018-09-20 | セイコーエプソン株式会社 | Electronic apparatus |
-
1981
- 1981-01-09 JP JP185981A patent/JPS57116287A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5767747A (en) * | 1995-08-18 | 1998-06-16 | International Business Machines Corporation | Electronic low power clock circuit and method |
| JP2013232545A (en) * | 2012-04-27 | 2013-11-14 | Lapis Semiconductor Co Ltd | Semiconductor device, measurement instrument and correction method |
| US9197217B2 (en) | 2012-04-27 | 2015-11-24 | Lapis Semiconductor Co., Ltd. | Semiconductor device, measurement device, and correction method |
| US9584134B2 (en) | 2012-04-27 | 2017-02-28 | Lapis Semiconductor Co., Ltd. | Correcting temperature based oscillation frequency errors in semiconductor device |
| US9838022B2 (en) | 2012-04-27 | 2017-12-05 | Lapis Semiconductor Co., Ltd. | Semiconductor device with oscillation frequency error correction |
| US10411715B2 (en) | 2012-04-27 | 2019-09-10 | Lapis Semiconductor Co., Ltd. | Semiconductor device, measurement device, and correction method |
| JP2018146393A (en) * | 2017-03-06 | 2018-09-20 | セイコーエプソン株式会社 | Electronic apparatus |
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