DE3780495T2 - Elektronische uhr. - Google Patents

Elektronische uhr.

Info

Publication number
DE3780495T2
DE3780495T2 DE8787302982T DE3780495T DE3780495T2 DE 3780495 T2 DE3780495 T2 DE 3780495T2 DE 8787302982 T DE8787302982 T DE 8787302982T DE 3780495 T DE3780495 T DE 3780495T DE 3780495 T2 DE3780495 T2 DE 3780495T2
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
DE8787302982T
Other languages
English (en)
Other versions
DE3780495D1 (de
Inventor
Hiroyuki Odagiri
Yuichi Inoue
Hiroyuki Masaki
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
Application filed by Seiko Instruments Inc filed Critical Seiko Instruments Inc
Publication of DE3780495D1 publication Critical patent/DE3780495D1/de
Application granted granted Critical
Publication of DE3780495T2 publication Critical patent/DE3780495T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • 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
    • 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)
  • Electromechanical Clocks (AREA)
DE8787302982T 1986-04-08 1987-04-06 Elektronische uhr. Expired - Fee Related DE3780495T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP61080722A JPS62237386A (ja) 1986-04-08 1986-04-08 電子時計

Publications (2)

Publication Number Publication Date
DE3780495D1 DE3780495D1 (de) 1992-08-27
DE3780495T2 true DE3780495T2 (de) 1992-12-17

Family

ID=13726254

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8787302982T Expired - Fee Related DE3780495T2 (de) 1986-04-08 1987-04-06 Elektronische uhr.

Country Status (4)

Country Link
US (1) US4779248A (de)
EP (1) EP0241253B1 (de)
JP (1) JPS62237386A (de)
DE (1) DE3780495T2 (de)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE68914273T2 (de) * 1989-01-05 1994-11-10 Ibm Arbeitsverfahren eines Zeitmessers.
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
US6086244A (en) * 1997-03-20 2000-07-11 Stmicroelectronics, Inc. Low power, cost effective, temperature compensated, real time clock and method of clocking systems
JP3062995B2 (ja) * 1997-03-27 2000-07-12 セイコーインスツルメンツ株式会社 電子時計
US20090129208A1 (en) * 2009-01-28 2009-05-21 Weiss Kenneth P Apparatus, system and method for keeping time

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4382692A (en) * 1979-11-26 1983-05-10 Ebauches, S.A. Analog-display electronic timepiece comprising a divider with an adjustable division factor
US4427302A (en) * 1980-06-06 1984-01-24 Citizen Watch Company Limited Timekeeping signal source for an electronic timepiece
CH650122GA3 (de) * 1981-12-17 1985-07-15
JPS59102183A (ja) * 1982-12-03 1984-06-13 Casio Comput Co Ltd 電子時計

Also Published As

Publication number Publication date
EP0241253A2 (de) 1987-10-14
JPS62237386A (ja) 1987-10-17
US4779248A (en) 1988-10-18
DE3780495D1 (de) 1992-08-27
JPH058995B2 (de) 1993-02-03
EP0241253A3 (en) 1989-03-22
EP0241253B1 (de) 1992-07-22

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8320 Willingness to grant licences declared (paragraph 23)
8339 Ceased/non-payment of the annual fee