JPS55128186A - Electronic watch - Google Patents

Electronic watch

Info

Publication number
JPS55128186A
JPS55128186A JP3549979A JP3549979A JPS55128186A JP S55128186 A JPS55128186 A JP S55128186A JP 3549979 A JP3549979 A JP 3549979A JP 3549979 A JP3549979 A JP 3549979A JP S55128186 A JPS55128186 A JP S55128186A
Authority
JP
Japan
Prior art keywords
trimming
frequency
oscillator
shifted
peak temperature
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
JP3549979A
Other languages
Japanese (ja)
Inventor
Junichi Yoshida
Kazuhiro Horiuchi
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.)
Ricoh Elemex Corp
Ricoh Co Ltd
Original Assignee
Ricoh Elemex Corp
Ricoh 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 Ricoh Elemex Corp, Ricoh Co Ltd filed Critical Ricoh Elemex Corp
Priority to JP3549979A priority Critical patent/JPS55128186A/en
Publication of JPS55128186A publication Critical patent/JPS55128186A/en
Pending legal-status Critical Current

Links

Landscapes

  • Oscillators With Electromechanical Resonators (AREA)
  • Electric Clocks (AREA)

Abstract

PURPOSE: To facilitate the highly accurate trimming by allowing any one of oscillators to actuate automatic trimming of the other corresponding to the frequency shifted by a certain value from that generated from the first one following the trimming thereof.
CONSTITUTION: This electronic watch is equipped with oscillators having a peak temperature difference ΔT and parabolic temperature characteristics A and B. The output of the oscillator 1 higher in the oscillation frequency is shaped 3 in the waveform to make the watch drive signal. The oscillator 2 performs a digital trimming with a digital trimming circuit 5 corresponding to the frequency shifted by a certain value determined by the peak temperature ΔT and the coefficient of parabolic temperature shifted from the frequency generated at the trimming of the oscillator 1. Accordingly, the trimming of the oscillator 2 is possible corresponding to the frequency at the peak temperature without changing the frequency thereof.
COPYRIGHT: (C)1980,JPO&Japio
JP3549979A 1979-03-28 1979-03-28 Electronic watch Pending JPS55128186A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3549979A JPS55128186A (en) 1979-03-28 1979-03-28 Electronic watch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3549979A JPS55128186A (en) 1979-03-28 1979-03-28 Electronic watch

Publications (1)

Publication Number Publication Date
JPS55128186A true JPS55128186A (en) 1980-10-03

Family

ID=12443437

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3549979A Pending JPS55128186A (en) 1979-03-28 1979-03-28 Electronic watch

Country Status (1)

Country Link
JP (1) JPS55128186A (en)

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