CA972823A - Presettable frequency divider for electronic timepiece - Google Patents

Presettable frequency divider for electronic timepiece

Info

Publication number
CA972823A
CA972823A CA149,884A CA149884A CA972823A CA 972823 A CA972823 A CA 972823A CA 149884 A CA149884 A CA 149884A CA 972823 A CA972823 A CA 972823A
Authority
CA
Canada
Prior art keywords
frequency divider
electronic timepiece
presettable frequency
presettable
timepiece
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
CA149,884A
Other languages
English (en)
Other versions
CA149884S (en
Inventor
Dale R. Koehler
Jan W.L. Prak
Jerrald A. Zupfer
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.)
Bulova Watch Co Inc
Original Assignee
Bulova Watch Co 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 Bulova Watch Co Inc filed Critical Bulova Watch Co Inc
Application granted granted Critical
Publication of CA972823A publication Critical patent/CA972823A/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
    • 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
    • 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
    • H03K23/662—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 by adding or suppressing pulses

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electric Clocks (AREA)
CA149,884A 1971-08-27 1972-08-21 Presettable frequency divider for electronic timepiece Expired CA972823A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US17566271A 1971-08-27 1971-08-27

Publications (1)

Publication Number Publication Date
CA972823A true CA972823A (en) 1975-08-12

Family

ID=22641133

Family Applications (1)

Application Number Title Priority Date Filing Date
CA149,884A Expired CA972823A (en) 1971-08-27 1972-08-21 Presettable frequency divider for electronic timepiece

Country Status (8)

Country Link
US (1) US3777471A (instruction)
JP (1) JPS5236429B2 (instruction)
CA (1) CA972823A (instruction)
CH (2) CH558559A (instruction)
FR (1) FR2150838B1 (instruction)
GB (1) GB1398537A (instruction)
HK (1) HK23976A (instruction)
IT (1) IT962549B (instruction)

Families Citing this family (39)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE29423E (en) * 1970-12-17 1977-10-04 Kabushiki Kaisha Suwa Seikosha Time correction device for digital watches
CH554015A (instruction) * 1971-10-15 1974-09-13
GB1450071A (en) * 1972-10-02 1976-09-22 Citizen Watch Co Lgd Electronic timepiece
US4015419A (en) * 1972-10-02 1977-04-05 Citizen Watch Co., Ltd. Electronic timepiece
JPS4991276A (instruction) * 1972-12-29 1974-08-31
JPS4994365A (instruction) * 1973-01-09 1974-09-07
JPS4994255A (instruction) * 1973-01-11 1974-09-06
JPS4996769A (instruction) * 1973-01-18 1974-09-12
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 (instruction) * 1973-02-27 1977-02-28 Ebauches Sa
US4062178A (en) * 1973-04-19 1977-12-13 Kabushiki Kaisha Suwa Seikosha Electronic timepiece
JPS49130774A (instruction) * 1973-04-19 1974-12-14
JPS5751079B2 (instruction) * 1973-04-25 1982-10-30
JPS5031864A (instruction) * 1973-07-20 1975-03-28
JPS5039977A (instruction) * 1973-08-13 1975-04-12
JPS5756034B2 (instruction) * 1973-09-10 1982-11-27
US3910030A (en) * 1973-09-12 1975-10-07 Ise Electronics Corp Digital clocks
JPS587190B2 (ja) * 1973-12-05 1983-02-08 セイコーエプソン株式会社 スイシヨウドケイ
US3945194A (en) * 1973-12-15 1976-03-23 Itt Industries, Inc. Electronic quartz clock with integrated circuits
JPS6120817B2 (instruction) * 1973-12-24 1986-05-23 Citizen Watch Co Ltd
JPS50145269A (instruction) * 1974-05-14 1975-11-21
US4162608A (en) * 1974-06-05 1979-07-31 Kabushiki Kaisha Suwa Seikosha Electronic timepiece frequency regulating circuit
JPS5113279A (instruction) * 1974-07-11 1976-02-02 Suwa Seikosha Kk
IT1039870B (it) * 1974-07-26 1979-12-10 Eurosil Gmbh Disposizione di connessioni per puntare rispettivamente per regolare un dispositivo per la misurazione del tempo
JPS5125441A (instruction) * 1974-08-27 1976-03-02 Kobe Steel Ltd
CH616297B (de) * 1974-09-16 Centre Electron Horloger Garde-temps compense en fonction d'au moins un parametre physique d'environnement.
US3962701A (en) * 1974-12-23 1976-06-08 Rockwell International Corporation Coded counting sequence and logic implementation thereof to drive a display pattern
JPS5181165A (instruction) * 1975-01-13 1976-07-15 Suwa Seikosha Kk
JPS51146268A (en) * 1975-06-10 1976-12-15 Seiko Instr & Electronics Ltd Frequency divider for clock
JPS5191762A (instruction) * 1975-10-15 1976-08-11
US4055945A (en) * 1975-12-15 1977-11-01 Timex Corporation Frequency adjustment means for an electronic timepiece
JPS5280870A (en) * 1975-12-27 1977-07-06 Canon Inc Electronic watch
CH512076A4 (instruction) * 1976-04-23 1977-06-30
JPS52146273A (en) * 1976-05-29 1977-12-05 Casio Comput Co Ltd Electronic watch device
US4093873A (en) * 1976-10-28 1978-06-06 Intel Corporation Compensating digital counter for quartz crystal oscillator
JPS5422865A (en) * 1977-07-21 1979-02-21 Seiko Epson Corp Miniature electronic watch
CH624536B (fr) * 1978-11-24 Ebauches Sa Piece d'horlogerie electronique a affichage analogique comportant un diviseur a taux de division ajustable.
US4400093A (en) * 1981-07-06 1983-08-23 Omega Louis Brandt & Frere S.A. Method for inspecting the running of a timepiece and timepiece adapted for such method
ES2242410T3 (es) * 1998-08-28 2005-11-01 Swatch Ag Pieza de relojeria electrica que incluye una indicacion horaria fundada en ub sistema decimal.

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH496277A (fr) * 1967-09-01 1970-05-29 Patek Philippe Sa Dispositif de remise à l'heure automatique permanente d'une horloge
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
JPS4842189B1 (instruction) * 1969-08-20 1973-12-11
US3646751A (en) * 1969-12-05 1972-03-07 Detection Sciences Digital timing system
US3672155A (en) * 1970-05-06 1972-06-27 Hamilton Watch Co Solid state watch

Also Published As

Publication number Publication date
DE2241514A1 (de) 1973-03-01
CH558559A (instruction) 1975-01-31
JPS5236429B2 (instruction) 1977-09-16
FR2150838B1 (instruction) 1977-03-18
CH1210672A4 (instruction) 1974-08-15
GB1398537A (en) 1975-06-25
US3777471A (en) 1973-12-11
IT962549B (it) 1973-12-31
JPS4833859A (instruction) 1973-05-14
FR2150838A1 (instruction) 1973-04-13
DE2241514B2 (de) 1976-02-19
HK23976A (en) 1976-04-30

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