DE3766143D1 - Elektronische uhr. - Google Patents

Elektronische uhr.

Info

Publication number
DE3766143D1
DE3766143D1 DE8787303014T DE3766143T DE3766143D1 DE 3766143 D1 DE3766143 D1 DE 3766143D1 DE 8787303014 T DE8787303014 T DE 8787303014T DE 3766143 T DE3766143 T DE 3766143T DE 3766143 D1 DE3766143 D1 DE 3766143D1
Authority
DE
Germany
Prior art keywords
electronic clock
clock
electronic
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.)
Expired - Fee Related
Application number
DE8787303014T
Other languages
English (en)
Inventor
Hiroyuki Odagiri
Yuichi Inoue
Hiroyuki Masaki Hiroyuk Masaki
Shuji Otawa
Masao Kasuga
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 Instruments Inc
Original Assignee
Seiko Instruments Inc
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
Priority claimed from JP61080720A external-priority patent/JP2510415B2/ja
Priority claimed from JP8302786A external-priority patent/JPS62238486A/ja
Application filed by Seiko Instruments Inc filed Critical Seiko Instruments Inc
Application granted granted Critical
Publication of DE3766143D1 publication Critical patent/DE3766143D1/de
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • G04G3/022—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
    • G—PHYSICS
    • G04—HOROLOGY
    • G04F—TIME-INTERVAL MEASURING
    • G04F5/00—Apparatus for producing preselected time intervals for use as timing standards
    • G04F5/04—Apparatus for producing preselected time intervals for use as timing standards using oscillators with electromechanical resonators producing electric oscillations or timing pulses
    • G04F5/06—Apparatus for producing preselected time intervals for use as timing standards using oscillators with electromechanical resonators producing electric oscillations or timing pulses using piezoelectric resonators
DE8787303014T 1986-04-08 1987-04-07 Elektronische uhr. Expired - Fee Related DE3766143D1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP61080720A JP2510415B2 (ja) 1986-04-08 1986-04-08 電子時計
JP8302786A JPS62238486A (ja) 1986-04-10 1986-04-10 電子時計における定電圧の調整方法

Publications (1)

Publication Number Publication Date
DE3766143D1 true DE3766143D1 (de) 1990-12-20

Family

ID=26421693

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8787303014T Expired - Fee Related DE3766143D1 (de) 1986-04-08 1987-04-07 Elektronische uhr.

Country Status (3)

Country Link
US (1) US4737944A (de)
EP (1) EP0241266B1 (de)
DE (1) DE3766143D1 (de)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07244540A (ja) * 1994-03-03 1995-09-19 Fujitsu Ltd 高精度時計装置
US6086244A (en) * 1997-03-20 2000-07-11 Stmicroelectronics, Inc. Low power, cost effective, temperature compensated, real time clock and method of clocking systems
US20090129208A1 (en) * 2009-01-28 2009-05-21 Weiss Kenneth P Apparatus, system and method for keeping time
JP6686329B2 (ja) 2015-08-28 2020-04-22 セイコーエプソン株式会社 発振回路、電子機器及び移動体
JP6728598B2 (ja) 2015-08-28 2020-07-22 セイコーエプソン株式会社 発振回路、電子機器及び移動体

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5633587A (en) * 1979-08-24 1981-04-04 Casio Comput Co Ltd Electronic watch
CH643106B (fr) * 1980-11-26 Suisse Horlogerie Garde-temps comprenant une chaine de diviseurs au rapport de division ajustable.
US4453834A (en) * 1981-07-03 1984-06-12 Citizen Watch Company Limited Electronic timepiece with temperature compensation
DE3135228C2 (de) * 1981-09-05 1984-12-13 Vdo Adolf Schindling Ag, 6000 Frankfurt Schaltungsanordnung zum Abgleich einer Pulsfrequenz einer quarzgesteuerten Uhr
US4473303A (en) * 1982-02-19 1984-09-25 Citizen Watch Company Limited Electronic timepiece
JPS59162478A (ja) * 1983-03-08 1984-09-13 Citizen Watch Co Ltd 温度補償付電子時計

Also Published As

Publication number Publication date
EP0241266B1 (de) 1990-11-14
EP0241266A3 (en) 1988-03-30
EP0241266A2 (de) 1987-10-14
US4737944A (en) 1988-04-12

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee