GB1370564A - Electronic timepieces - Google Patents

Electronic timepieces

Info

Publication number
GB1370564A
GB1370564A GB1701372A GB1701372A GB1370564A GB 1370564 A GB1370564 A GB 1370564A GB 1701372 A GB1701372 A GB 1701372A GB 1701372 A GB1701372 A GB 1701372A GB 1370564 A GB1370564 A GB 1370564A
Authority
GB
United Kingdom
Prior art keywords
comparator
division
stages
ffc
output
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
GB1701372A
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.)
Ebauches SA
Original Assignee
Ebauches SA
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 Ebauches SA filed Critical Ebauches SA
Publication of GB1370564A publication Critical patent/GB1370564A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K23/00—Pulse counters comprising counting chains; Frequency dividers comprising counting chains
    • H03K23/64—Pulse counters comprising counting chains; Frequency dividers comprising counting chains with a base or radix other than a power of two
    • H03K23/66—Pulse counters comprising counting chains; Frequency dividers comprising counting chains with a base or radix other than a power of two with a variable counting base, e.g. by presetting or by adding or suppressing pulses
    • 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
    • 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)
  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
  • Oscillators With Electromechanical Resonators (AREA)
  • Electric Clocks (AREA)
GB1701372A 1971-04-22 1972-04-13 Electronic timepieces Expired GB1370564A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH585271A CH540520A (fr) 1971-04-22 1971-04-22 Mouvement d'horlogerie électronique

Publications (1)

Publication Number Publication Date
GB1370564A true GB1370564A (en) 1974-10-16

Family

ID=4300378

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1701372A Expired GB1370564A (en) 1971-04-22 1972-04-13 Electronic timepieces

Country Status (7)

Country Link
US (1) US3812669A (forum.php)
JP (1) JPS5625636B1 (forum.php)
CH (2) CH540520A (forum.php)
DE (1) DE2219493C3 (forum.php)
FR (1) FR2133872B1 (forum.php)
GB (1) GB1370564A (forum.php)
IT (1) IT952693B (forum.php)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4396909A (en) 1980-06-03 1983-08-02 Casio Computer Co., Ltd. Frequency generating circuit

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3967442A (en) * 1973-02-01 1976-07-06 Berney Jean Claude Electric watch having an electromechanical movement including a correction mechanism for small errors
CH585426B5 (forum.php) * 1973-02-27 1977-02-28 Ebauches Sa
US4062178A (en) * 1973-04-19 1977-12-13 Kabushiki Kaisha Suwa Seikosha Electronic timepiece
JPS5751079B2 (forum.php) * 1973-04-25 1982-10-30
JPS5031864A (forum.php) * 1973-07-20 1975-03-28
GB1488914A (en) * 1973-12-19 1977-10-19 Citizen Watch Co Ltd Electronic timepiece
JPS50145269A (forum.php) * 1974-05-14 1975-11-21
US4162608A (en) * 1974-06-05 1979-07-31 Kabushiki Kaisha Suwa Seikosha Electronic timepiece frequency regulating circuit
JPS5113279A (forum.php) * 1974-07-11 1976-02-02 Suwa Seikosha Kk
JPS5614007B2 (forum.php) * 1974-08-19 1981-04-01
JPH0310916B2 (forum.php) * 1974-10-31 1991-02-14 Citizen Watch Co Ltd
JPS5170676A (forum.php) * 1974-12-17 1976-06-18 Casio Computer Co Ltd
JPS6024433B2 (ja) * 1975-08-01 1985-06-12 シチズン時計株式会社 時計用回路
GB1572369A (en) * 1976-06-24 1980-07-30 Casio Computer Co Ltd Electronic timepiece
CH621036B (fr) * 1977-02-28 Berney Sa Jean Claude Circuit integre pour piece d'horlogerie.
JPS6039193B2 (ja) * 1977-10-18 1985-09-04 セイコーエプソン株式会社 電子時計
JPS54105580A (en) * 1978-02-07 1979-08-18 Seiko Epson Corp Crystal oscillation type wristwatch
JPS554556A (en) * 1978-06-27 1980-01-14 Seiko Instr & Electronics Ltd Switch structure of electronic watche
DE3021863C2 (de) * 1980-06-11 1985-03-21 Vdo Adolf Schindling Ag, 6000 Frankfurt Elektronische Uhr mit einer Zeitbasis und einer Temperaturkompensationsschaltungsanordnung
US4608706A (en) * 1983-07-11 1986-08-26 International Business Machines Corporation High-speed programmable timing generator
FR2669791B1 (fr) * 1990-11-27 1994-12-09 Met Procede de correction de la derive systematique des horloges pilotees par un oscillateur et son dispositif de mise en óoeuvre.

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3230383A (en) * 1962-03-12 1966-01-18 Bunker Ramo Clock pulse counter
NL150631B (nl) * 1965-02-16 1976-08-16 Philips Nv Instelbare frequentiedeler.
JPS4123747Y1 (forum.php) * 1966-05-26 1966-12-02
US3581066A (en) * 1968-03-06 1971-05-25 Lear Siegler Inc Programmable counting circuit
US3541779A (en) * 1968-03-19 1970-11-24 Corning Glass Works Electronic timepiece
CH501959A (fr) * 1968-12-20 1970-08-31 Ebauches Sa Convertisseur de fréquence électronique

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4396909A (en) 1980-06-03 1983-08-02 Casio Computer Co., Ltd. Frequency generating circuit

Also Published As

Publication number Publication date
CH585271A4 (forum.php) 1973-02-15
DE2219493A1 (de) 1972-11-02
US3812669A (en) 1974-05-28
IT952693B (it) 1973-07-30
FR2133872A1 (forum.php) 1972-12-01
FR2133872B1 (forum.php) 1976-10-29
DE2219493B2 (de) 1974-01-24
CH540520A (fr) 1973-02-15
JPS5625636B1 (forum.php) 1981-06-13
DE2219493C3 (de) 1974-08-15

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee