EP1004949A3 - Pièce d'horlogerie à haute précision - Google Patents

Pièce d'horlogerie à haute précision Download PDF

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Publication number
EP1004949A3
EP1004949A3 EP99308470A EP99308470A EP1004949A3 EP 1004949 A3 EP1004949 A3 EP 1004949A3 EP 99308470 A EP99308470 A EP 99308470A EP 99308470 A EP99308470 A EP 99308470A EP 1004949 A3 EP1004949 A3 EP 1004949A3
Authority
EP
European Patent Office
Prior art keywords
section
crown
rate fast
slow data
high accuracy
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.)
Withdrawn
Application number
EP99308470A
Other languages
German (de)
English (en)
Other versions
EP1004949A2 (fr
Inventor
Hiroyuki c/o Seiko Instruments Inc. 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 EP1004949A2 publication Critical patent/EP1004949A2/fr
Publication of EP1004949A3 publication Critical patent/EP1004949A3/fr
Withdrawn legal-status Critical Current

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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)
  • Electromechanical Clocks (AREA)
  • Electric Clocks (AREA)
EP99308470A 1998-10-30 1999-10-26 Pièce d'horlogerie à haute précision Withdrawn EP1004949A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP31048998A JP3439671B2 (ja) 1998-10-30 1998-10-30 高精度時計
JP31048998 1998-10-30

Publications (2)

Publication Number Publication Date
EP1004949A2 EP1004949A2 (fr) 2000-05-31
EP1004949A3 true EP1004949A3 (fr) 2002-10-02

Family

ID=18005859

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99308470A Withdrawn EP1004949A3 (fr) 1998-10-30 1999-10-26 Pièce d'horlogerie à haute précision

Country Status (2)

Country Link
EP (1) EP1004949A3 (fr)
JP (1) JP3439671B2 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4141208A (en) * 1976-01-19 1979-02-27 Hughes Aircraft Company Digitally tuned timepiece
JPS5611384A (en) * 1979-07-10 1981-02-04 Usac Electronics Ind Co Ltd Computer with watch
FR2484103A1 (fr) * 1980-06-04 1981-12-11 Suisse Horlogerie Procede pour ajuster le rapport de division d'un diviseur de frequence et garde-temps adapte a ce procede
US4320476A (en) * 1978-07-10 1982-03-16 Jean-Claude Berney Sa Electronic watch with a device for controlling and driving the day of the month

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4141208A (en) * 1976-01-19 1979-02-27 Hughes Aircraft Company Digitally tuned timepiece
US4320476A (en) * 1978-07-10 1982-03-16 Jean-Claude Berney Sa Electronic watch with a device for controlling and driving the day of the month
JPS5611384A (en) * 1979-07-10 1981-02-04 Usac Electronics Ind Co Ltd Computer with watch
FR2484103A1 (fr) * 1980-06-04 1981-12-11 Suisse Horlogerie Procede pour ajuster le rapport de division d'un diviseur de frequence et garde-temps adapte a ce procede

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 005, no. 056 (P - 057) 17 April 1981 (1981-04-17) *

Also Published As

Publication number Publication date
JP2000137085A (ja) 2000-05-16
JP3439671B2 (ja) 2003-08-25
EP1004949A2 (fr) 2000-05-31

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