CH642221B - Piece d'horlogerie electronique, notamment montre-bracelet electronique. - Google Patents

Piece d'horlogerie electronique, notamment montre-bracelet electronique.

Info

Publication number
CH642221B
CH642221B CH1078778A CH1078778A CH642221B CH 642221 B CH642221 B CH 642221B CH 1078778 A CH1078778 A CH 1078778A CH 1078778 A CH1078778 A CH 1078778A CH 642221 B CH642221 B CH 642221B
Authority
CH
Switzerland
Prior art keywords
watch
electronic
divider
oscillator
stages
Prior art date
Application number
CH1078778A
Other languages
English (en)
French (fr)
Other versions
CH642221GA3 (cg-RX-API-DMAC7.html
Inventor
Nakazaki Yasunori
Asakawa Tatsushi
Original Assignee
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 of CH642221B publication Critical patent/CH642221B/fr
Application filed by Suwa Seikosha Kk filed Critical Suwa Seikosha Kk
Publication of CH642221GA3 publication Critical patent/CH642221GA3/fr

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
    • G04G3/022—Circuits for deriving low frequency timing pulses from pulses of higher frequency the desired number of pulses per unit of time being obtained by adding to or substracting from a pulse train one or more pulses

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electric Clocks (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Adornments (AREA)
CH1078778A 1977-10-18 1978-10-18 Piece d'horlogerie electronique, notamment montre-bracelet electronique. CH642221B (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP52124846A JPS6039193B2 (ja) 1977-10-18 1977-10-18 電子時計

Publications (2)

Publication Number Publication Date
CH642221B true CH642221B (fr)
CH642221GA3 CH642221GA3 (cg-RX-API-DMAC7.html) 1984-04-13

Family

ID=14895536

Family Applications (1)

Application Number Title Priority Date Filing Date
CH1078778A CH642221B (fr) 1977-10-18 1978-10-18 Piece d'horlogerie electronique, notamment montre-bracelet electronique.

Country Status (6)

Country Link
US (1) US4300224A (cg-RX-API-DMAC7.html)
JP (1) JPS6039193B2 (cg-RX-API-DMAC7.html)
CH (1) CH642221B (cg-RX-API-DMAC7.html)
DE (1) DE2845154C2 (cg-RX-API-DMAC7.html)
GB (1) GB2006996B (cg-RX-API-DMAC7.html)
HK (1) HK52484A (cg-RX-API-DMAC7.html)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55129789A (en) * 1979-03-29 1980-10-07 Seiko Epson Corp Electronic watch
US4290130A (en) 1979-12-21 1981-09-15 Timex Corporation Digital frequency trimmed electronic timepiece
US4282595A (en) 1979-12-21 1981-08-04 Timex Corporation Method for digital frequency trimming an oscillator in an electronic timepiece
JPS57117184A (en) * 1981-01-13 1982-07-21 Citizen Watch Co Ltd Non-volatile memory circuit for portable electronic device
US4565454A (en) * 1982-10-07 1986-01-21 Walters Richard J Time display system
GB2162974B (en) * 1984-08-09 1988-04-27 Suwa Seikosha Kk Electronic timepiece
CH661833GA3 (cg-RX-API-DMAC7.html) * 1985-12-18 1987-08-31
US5327404A (en) * 1990-11-27 1994-07-05 Vlsi Technology, Inc. On-chip frequency trimming method for real-time clock
JP3066724B2 (ja) * 1995-10-30 2000-07-17 セイコーインスツルメンツ株式会社 論理緩急回路及び論理緩急回路付き電子機器
US8392001B1 (en) * 2008-05-03 2013-03-05 Integrated Device Technology, Inc. Method and apparatus for externally aided self adjusting real time clock
US9597003B2 (en) 2013-03-27 2017-03-21 Medxcel, LLC Medical test signal generator and interface
US9215988B2 (en) 2013-03-27 2015-12-22 Medxcel, LLC Low power test signal generator for medical equipment

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3646371A (en) * 1969-07-25 1972-02-29 Us Army Integrated timer with nonvolatile memory
CH585271A4 (cg-RX-API-DMAC7.html) * 1971-04-22 1973-02-15
CH554015A (cg-RX-API-DMAC7.html) * 1971-10-15 1974-09-13
NL7316593A (nl) * 1973-07-16 1975-01-20 Intersil Inc Oscillator.
JPS50145269A (cg-RX-API-DMAC7.html) * 1974-05-14 1975-11-21
JPS5128775U (cg-RX-API-DMAC7.html) * 1974-08-23 1976-03-02

Also Published As

Publication number Publication date
US4300224A (en) 1981-11-10
JPS5458467A (en) 1979-05-11
DE2845154A1 (de) 1979-04-19
GB2006996B (en) 1982-08-11
CH642221GA3 (cg-RX-API-DMAC7.html) 1984-04-13
JPS6039193B2 (ja) 1985-09-04
HK52484A (en) 1984-07-13
GB2006996A (en) 1979-05-10
DE2845154C2 (de) 1984-12-20

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