GB1480493A - Method for making a timepiece and a frequency divider circuit therefor - Google Patents

Method for making a timepiece and a frequency divider circuit therefor

Info

Publication number
GB1480493A
GB1480493A GB31681/74A GB3168174A GB1480493A GB 1480493 A GB1480493 A GB 1480493A GB 31681/74 A GB31681/74 A GB 31681/74A GB 3168174 A GB3168174 A GB 3168174A GB 1480493 A GB1480493 A GB 1480493A
Authority
GB
United Kingdom
Prior art keywords
frequency
divider
crystal
division
frequency divider
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
Application number
GB31681/74A
Other languages
English (en)
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.)
Suwa Seikosha KK
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 date
Application filed by Suwa Seikosha KK filed Critical Suwa Seikosha KK
Publication of GB1480493A publication Critical patent/GB1480493A/en
Expired 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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electric Clocks (AREA)
  • Oscillators With Electromechanical Resonators (AREA)
GB31681/74A 1973-07-20 1974-07-17 Method for making a timepiece and a frequency divider circuit therefor Expired GB1480493A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP48080583A JPS5031864A (enExample) 1973-07-20 1973-07-20

Publications (1)

Publication Number Publication Date
GB1480493A true GB1480493A (en) 1977-07-20

Family

ID=13722356

Family Applications (1)

Application Number Title Priority Date Filing Date
GB31681/74A Expired GB1480493A (en) 1973-07-20 1974-07-17 Method for making a timepiece and a frequency divider circuit therefor

Country Status (3)

Country Link
US (1) US3978649A (enExample)
JP (1) JPS5031864A (enExample)
GB (1) GB1480493A (enExample)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106959603A (zh) * 2017-04-20 2017-07-18 中国电子科技集团公司第四十三研究所 一种宽温度范围低温漂定时系统及其定时方法

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5146170A (enExample) * 1974-10-18 1976-04-20 Hitachi Ltd
JPS5181165A (enExample) * 1975-01-13 1976-07-15 Suwa Seikosha Kk
JPS6035637B2 (ja) * 1975-06-05 1985-08-15 シチズン時計株式会社 電子時計
JPS5291471A (en) * 1976-01-28 1977-08-01 Toshiba Corp Clock pulse generator
US4188775A (en) * 1976-11-16 1980-02-19 Citizen Watch Company Limited Frequency adjustment means for electric timepiece
US4407589A (en) * 1981-02-13 1983-10-04 Davidson John R Error correction method and apparatus for electronic timepieces
JPH0183071U (enExample) * 1987-11-17 1989-06-02
JPH0345969U (enExample) * 1989-09-11 1991-04-26
US6253612B1 (en) 1998-06-05 2001-07-03 Integrated Micro Instruments, Inc. Generation of mechanical oscillation applicable to vibratory rate gyroscopes

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH1229067A4 (enExample) * 1967-09-01 1970-05-29
US3541779A (en) * 1968-03-19 1970-11-24 Corning Glass Works Electronic timepiece
US3540207A (en) * 1968-09-20 1970-11-17 Timex Corp Electronic watch counting circuit
US3629582A (en) * 1969-04-24 1971-12-21 Dale R Koehler Timepiece with radioactive timekeeping standard
CH540520A (fr) * 1971-04-22 1973-02-15 Ebauches Sa Mouvement d'horlogerie électronique
US3777471A (en) * 1971-08-27 1973-12-11 Bulova Watch Co Inc Presettable frequency divider for electronic timepiece
JPS5319944B2 (enExample) * 1971-09-25 1978-06-23

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106959603A (zh) * 2017-04-20 2017-07-18 中国电子科技集团公司第四十三研究所 一种宽温度范围低温漂定时系统及其定时方法
CN106959603B (zh) * 2017-04-20 2022-06-21 中国电子科技集团公司第四十三研究所 一种宽温度范围低温漂定时系统及其定时方法

Also Published As

Publication number Publication date
US3978649A (en) 1976-09-07
JPS5031864A (enExample) 1975-03-28

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19930717