JPS57578A - Electronic timepiece - Google Patents

Electronic timepiece

Info

Publication number
JPS57578A
JPS57578A JP7446480A JP7446480A JPS57578A JP S57578 A JPS57578 A JP S57578A JP 7446480 A JP7446480 A JP 7446480A JP 7446480 A JP7446480 A JP 7446480A JP S57578 A JPS57578 A JP S57578A
Authority
JP
Japan
Prior art keywords
divider
oscillators
frequency
frequencies
frequency divider
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
JP7446480A
Other languages
Japanese (ja)
Inventor
Masao Mizuno
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.)
Seiko Epson Corp
Suwa Seikosha KK
Original Assignee
Seiko Epson Corp
Suwa Seikosha KK
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 Seiko Epson Corp, Suwa Seikosha KK filed Critical Seiko Epson Corp
Priority to JP7446480A priority Critical patent/JPS57578A/en
Priority to GB8113235A priority patent/GB2077963B/en
Priority to CH364081A priority patent/CH647124GA3/fr
Publication of JPS57578A publication Critical patent/JPS57578A/en
Pending legal-status Critical Current

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
    • G04G3/027—Circuits for deriving low frequency timing pulses from pulses of higher frequency by combining pulse-trains of different frequencies, e.g. obtained from two independent oscillators or from a common oscillator by means of different frequency dividing ratios

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electric Clocks (AREA)
  • Oscillators With Electromechanical Resonators (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)

Abstract

PURPOSE: To remove an effect due to mutual coupling of two piezoelectric oscillators having different frequencies by dividing respective outputs of two oscillating circuits using said oscillators and fetching the frequency difference from the divided frequencies.
CONSTITUTION: The frequencies of oscillators (c) and (d), for instance, assume 32768Hz and 43690.666Hz, respectively. A one third divider is inserted to a frequency divider 18, and a one fourth divider to a frequency divider 19, a detection of the frequency difference is detected 20 and it is sent to a storage circuit 14, a pulse interruption-erasing circuit 15, a frequency divider 16 and an indicator 17.
COPYRIGHT: (C)1982,JPO&Japio
JP7446480A 1980-06-03 1980-06-03 Electronic timepiece Pending JPS57578A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP7446480A JPS57578A (en) 1980-06-03 1980-06-03 Electronic timepiece
GB8113235A GB2077963B (en) 1980-06-03 1981-04-29 Electronic timepiece
CH364081A CH647124GA3 (en) 1980-06-03 1981-06-03

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7446480A JPS57578A (en) 1980-06-03 1980-06-03 Electronic timepiece

Publications (1)

Publication Number Publication Date
JPS57578A true JPS57578A (en) 1982-01-05

Family

ID=13547996

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7446480A Pending JPS57578A (en) 1980-06-03 1980-06-03 Electronic timepiece

Country Status (3)

Country Link
JP (1) JPS57578A (en)
CH (1) CH647124GA3 (en)
GB (1) GB2077963B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58159651U (en) * 1982-04-16 1983-10-24 尾畑　武志 Automatic power on/off of video cassette recorder
JPS58159653U (en) * 1982-04-15 1983-10-24 尾畑　武志 Automatic playback of video cassette recorder
AU761356B2 (en) * 1998-10-28 2003-06-05 Enraf Fluid Technology Usa Inc. Apparatus, system and method for additizing a liquid product

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3826931A (en) * 1967-10-26 1974-07-30 Hewlett Packard Co Dual crystal resonator apparatus
JPS5071362A (en) * 1973-10-24 1975-06-13
JPS5441773A (en) * 1977-09-09 1979-04-03 Seiko Instr & Electronics Ltd Electronic watch

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58159653U (en) * 1982-04-15 1983-10-24 尾畑　武志 Automatic playback of video cassette recorder
JPS58159651U (en) * 1982-04-16 1983-10-24 尾畑　武志 Automatic power on/off of video cassette recorder
AU761356B2 (en) * 1998-10-28 2003-06-05 Enraf Fluid Technology Usa Inc. Apparatus, system and method for additizing a liquid product

Also Published As

Publication number Publication date
GB2077963A (en) 1981-12-23
CH647124GA3 (en) 1985-01-15
GB2077963B (en) 1983-11-16

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