CH637520GA3 - - Google Patents

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Publication number
CH637520GA3
CH637520GA3 CH120179A CH120179A CH637520GA3 CH 637520G A3 CH637520G A3 CH 637520GA3 CH 120179 A CH120179 A CH 120179A CH 120179 A CH120179 A CH 120179A CH 637520G A3 CH637520G A3 CH 637520GA3
Authority
CH
Switzerland
Prior art keywords
wristwatch
additional pulses
temperature
hourly
memory
Prior art date
Application number
CH120179A
Other languages
English (en)
Other versions
CH637520B (fr
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
Publication of CH637520B publication Critical patent/CH637520B/fr
Application filed filed Critical
Publication of CH637520GA3 publication Critical patent/CH637520GA3/fr

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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
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
    • H03L1/00—Stabilisation of generator output against variations of physical values, e.g. power supply
    • H03L1/02—Stabilisation of generator output against variations of physical values, e.g. power supply against variations of temperature only
    • H03L1/022—Stabilisation of generator output against variations of physical values, e.g. power supply against variations of temperature only by indirect stabilisation, i.e. by generating an electrical correction signal which is a function of the temperature
    • H03L1/026—Stabilisation of generator output against variations of physical values, e.g. power supply against variations of temperature only by indirect stabilisation, i.e. by generating an electrical correction signal which is a function of the temperature by using a memory for digitally storing correction values
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
    • H03L1/00—Stabilisation of generator output against variations of physical values, e.g. power supply
    • H03L1/02—Stabilisation of generator output against variations of physical values, e.g. power supply against variations of temperature only
    • H03L1/022—Stabilisation of generator output against variations of physical values, e.g. power supply against variations of temperature only by indirect stabilisation, i.e. by generating an electrical correction signal which is a function of the temperature
    • H03L1/027—Stabilisation of generator output against variations of physical values, e.g. power supply against variations of temperature only by indirect stabilisation, i.e. by generating an electrical correction signal which is a function of the temperature by using frequency conversion means which is variable with temperature, e.g. mixer, frequency divider, pulse add/substract logic circuit
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
    • H03L1/00—Stabilisation of generator output against variations of physical values, e.g. power supply
    • H03L1/02—Stabilisation of generator output against variations of physical values, e.g. power supply against variations of temperature only
    • H03L1/028—Stabilisation of generator output against variations of physical values, e.g. power supply against variations of temperature only of generators comprising piezoelectric resonators

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electric Clocks (AREA)
  • Oscillators With Electromechanical Resonators (AREA)
  • Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
  • Glass Compositions (AREA)
  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
CH120179A 1978-02-07 1979-02-07 Montre-bracelet a quartz. CH637520B (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1264778A JPS54105580A (en) 1978-02-07 1978-02-07 Crystal oscillation type wristwatch

Publications (2)

Publication Number Publication Date
CH637520B CH637520B (fr)
CH637520GA3 true CH637520GA3 (fr) 1983-08-15

Family

ID=11811148

Family Applications (1)

Application Number Title Priority Date Filing Date
CH120179A CH637520B (fr) 1978-02-07 1979-02-07 Montre-bracelet a quartz.

Country Status (4)

Country Link
US (1) US4321698A (fr)
JP (1) JPS54105580A (fr)
CH (1) CH637520B (fr)
GB (1) GB2018473B (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3111736A1 (de) * 1981-03-25 1982-11-25 Siemens AG, 1000 Berlin und 8000 München Taktgeneratoranordnung
US4453834A (en) * 1981-07-03 1984-06-12 Citizen Watch Company Limited Electronic timepiece with temperature compensation
US4473303A (en) * 1982-02-19 1984-09-25 Citizen Watch Company Limited Electronic timepiece
GB2162974B (en) * 1984-08-09 1988-04-27 Suwa Seikosha Kk Electronic timepiece
US4903251A (en) * 1989-09-05 1990-02-20 Ford Motor Company Accuracy adjustment for time-of-day clock using a microcontroller
JP3467631B2 (ja) * 1994-06-07 2003-11-17 株式会社ルネサステクノロジ ロジックｌｓｉ
US6086244A (en) * 1997-03-20 2000-07-11 Stmicroelectronics, Inc. Low power, cost effective, temperature compensated, real time clock and method of clocking systems
JP4264494B2 (ja) * 2003-05-15 2009-05-20 Ｏｋｉセミコンダクタ株式会社 標準電波受信時刻装置
US8392001B1 (en) * 2008-05-03 2013-03-05 Integrated Device Technology, Inc. Method and apparatus for externally aided self adjusting real time clock

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH540520A (fr) * 1971-04-22 1973-02-15 Ebauches Sa Mouvement d'horlogerie électronique
CH554015A (fr) * 1971-10-15 1974-09-13
CH616297B (de) * 1974-09-16 Centre Electron Horloger Garde-temps compense en fonction d'au moins un parametre physique d'environnement.

Also Published As

Publication number Publication date
GB2018473A (en) 1979-10-17
GB2018473B (en) 1982-07-21
JPS54105580A (en) 1979-08-18
US4321698A (en) 1982-03-23
CH637520B (fr)

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