JPS55146090A - Crystal watch with temperature correction - Google Patents
Crystal watch with temperature correctionInfo
- Publication number
- JPS55146090A JPS55146090A JP5367979A JP5367979A JPS55146090A JP S55146090 A JPS55146090 A JP S55146090A JP 5367979 A JP5367979 A JP 5367979A JP 5367979 A JP5367979 A JP 5367979A JP S55146090 A JPS55146090 A JP S55146090A
- Authority
- JP
- Japan
- Prior art keywords
- temperature
- gate
- oscillator
- time
- temperature correction
- 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)
- Oscillators With Electromechanical Resonators (AREA)
Abstract
PURPOSE: To automatically correct the time error produced by temperature, by adding another oscillation source having the primary temperature coefficient.
CONSTITUTION: The oscillator 2 having the primary coefficient of temperature for the oscillation frequency, gate 78 detecting the frequency difference between the crystal oscillator 4 and the oscillator 2, FF68 setting time interval to operate the gate 78, counters 12, 14 counting the frequency difference from the gate 78, and pulse control means 32 correcting and controlling the drive pulse from the clock circuit 8 based on the content of count, are provided, and the time is corrected when the error of time due to temperature change reaches a given number.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5367979A JPS55146090A (en) | 1979-05-01 | 1979-05-01 | Crystal watch with temperature correction |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5367979A JPS55146090A (en) | 1979-05-01 | 1979-05-01 | Crystal watch with temperature correction |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55146090A true JPS55146090A (en) | 1980-11-14 |
Family
ID=12949499
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP5367979A Pending JPS55146090A (en) | 1979-05-01 | 1979-05-01 | Crystal watch with temperature correction |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55146090A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4537515A (en) * | 1981-12-17 | 1985-08-27 | Asulab S.A. | Resonator temperature compensated time base and watch using said time base |
-
1979
- 1979-05-01 JP JP5367979A patent/JPS55146090A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4537515A (en) * | 1981-12-17 | 1985-08-27 | Asulab S.A. | Resonator temperature compensated time base and watch using said time base |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPS5758210A (en) | Error correction range controlling circuit | |
FR2331079B1 (en) | ||
JPS55146090A (en) | Crystal watch with temperature correction | |
JPS5276070A (en) | Electronic timepiece | |
GB2163575B (en) | Improvements in or relating to electronic timepieces | |
JPS5679281A (en) | Time-correcting apparatus of timepiece by time signal tone | |
JPS57166585A (en) | Electronic timepiece | |
JPS54140569A (en) | Electronic watch | |
JPS5590883A (en) | Clock | |
JPS57196180A (en) | Electronic timepiece with mixture of analog and digital | |
JPS5485775A (en) | Electronic watch | |
JPS5320912A (en) | Read circuit of double frequency recording system | |
JPS53163A (en) | Electronic clock | |
JPS55149090A (en) | Temperature compensating system of crystal watch | |
JPS5764192A (en) | Electronic clock | |
GB1449596A (en) | Electronic timepiece | |
JPS5289356A (en) | Method of resetting indication correcting mode of electronic timepiece | |
JPS55107975A (en) | Electronic watch | |
JPS5676624A (en) | Electronic tuning tuner device | |
JPS53145542A (en) | Pll synthesizer control circuit | |
JPS5569080A (en) | Electronic watch with automatic time correcting function | |
JPS594677B2 (en) | electronic clock | |
JPS5338357A (en) | Watch with hour hand correcting mechanism | |
JPS5349934A (en) | Digital control oscillator | |
JPS5287063A (en) | Date correcting device for watches |