JPS55146090A - Crystal watch with temperature correction - Google Patents

Crystal watch with temperature correction

Info

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
Application number
JP5367979A
Other languages
Japanese (ja)
Inventor
Yoshito Yamaguchi
Hideki Morishima
Hiroshi Miyasaka
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.)
Rhythm Watch Co Ltd
Original Assignee
Rhythm Watch Co Ltd
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 Rhythm Watch Co Ltd filed Critical Rhythm Watch Co Ltd
Priority to JP5367979A priority Critical patent/JPS55146090A/en
Publication of JPS55146090A publication Critical patent/JPS55146090A/en
Pending legal-status Critical Current

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
JP5367979A 1979-05-01 1979-05-01 Crystal watch with temperature correction Pending JPS55146090A (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (1)

* Cited by examiner, † Cited by third party
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

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