GB1398537A - Timing systems for electronic timepieces - Google Patents

Timing systems for electronic timepieces

Info

Publication number
GB1398537A
GB1398537A GB3914372A GB3914372A GB1398537A GB 1398537 A GB1398537 A GB 1398537A GB 3914372 A GB3914372 A GB 3914372A GB 3914372 A GB3914372 A GB 3914372A GB 1398537 A GB1398537 A GB 1398537A
Authority
GB
United Kingdom
Prior art keywords
divider
frequency
set time
stages
supplies
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
GB3914372A
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
Publication of GB1398537A publication Critical patent/GB1398537A/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)

Abstract

1398537 Electronic watches BULOVA WATCH CO Inc 22 Aug 1972 [27 Aug 1971] 39143/72 Headings G4D D7X D6Y D6C1 and D6C2 The high frequency standard for a timepiece operates at a frequency less than an ideal frequency and additional pulses are injected into a frequency divider arrangement to provide a number of useable pulses in a set time that equals the number obtainable from the ideal frequency source. The frequency source 10, which conveniently is a crystal controlled oscillator, supplies a main divider section 11 consisting of n stages of binary division connected in series which supplies a display 12 which may be a liquid crystal, electroluminescent or mechanical time indicator. The output is also supplied to a supplementary divider 13 which has m stages and supplies a pre-set section 14 which is connected to the inputs of L stages of the main divider. Thus over a set time the number of deficient pulses is added in either as an initial setting to the divider for each set time or by distributing them evenly during the set time. The number to be added can be pre-set in the divider by making specific connections or alternatively by providing a memory circuit, including bi-stable elements, which can be externally set to regulate the timing. It is stated that a radio-active source emitting α-particles may be used as the frequency source.
GB3914372A 1971-08-27 1972-08-22 Timing systems for electronic timepieces Expired GB1398537A (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
GB1398537A true GB1398537A (en) 1975-06-25

Family

ID=22641133

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3914372A Expired GB1398537A (en) 1971-08-27 1972-08-22 Timing systems for electronic timepieces

Country Status (8)

Country Link
US (1) US3777471A (en)
JP (1) JPS5236429B2 (en)
CA (1) CA972823A (en)
CH (2) CH1210672A4 (en)
FR (1) FR2150838B1 (en)
GB (1) GB1398537A (en)
HK (1) HK23976A (en)
IT (1) IT962549B (en)

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 (en) * 1971-10-15 1974-09-13
US4015419A (en) * 1972-10-02 1977-04-05 Citizen Watch Co., Ltd. Electronic timepiece
GB1450072A (en) * 1972-10-02 1976-09-22 Citizen Watch Co Ltd Electronic timepiece
JPS4991276A (en) * 1972-12-29 1974-08-31
JPS4994365A (en) * 1973-01-09 1974-09-07
JPS4994255A (en) * 1973-01-11 1974-09-06
JPS4996769A (en) * 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 (en) * 1973-02-27 1977-02-28 Ebauches Sa
US4062178A (en) * 1973-04-19 1977-12-13 Kabushiki Kaisha Suwa Seikosha Electronic timepiece
JPS49130774A (en) * 1973-04-19 1974-12-14
JPS5751079B2 (en) * 1973-04-25 1982-10-30
JPS5031864A (en) * 1973-07-20 1975-03-28
JPS5039977A (en) * 1973-08-13 1975-04-12
JPS5756034B2 (en) * 1973-09-10 1982-11-27
US3910030A (en) * 1973-09-12 1975-10-07 Ise Electronics Corp Digital clocks
JPS587190B2 (en) * 1973-12-05 1983-02-08 セイコーエプソン株式会社 Suishiodokei
US3945194A (en) * 1973-12-15 1976-03-23 Itt Industries, Inc. Electronic quartz clock with integrated circuits
JPS6120817B2 (en) * 1973-12-24 1986-05-23 Citizen Watch Co Ltd
JPS50145269A (en) * 1974-05-14 1975-11-21
US4162608A (en) * 1974-06-05 1979-07-31 Kabushiki Kaisha Suwa Seikosha Electronic timepiece frequency regulating circuit
JPS5113279A (en) * 1974-07-11 1976-02-02 Suwa Seikosha Kk
IT1039870B (en) * 1974-07-26 1979-12-10 Eurosil Gmbh ARRANGEMENT OF CONNECTIONS FOR AIMING RESPECTIVELY TO ADJUST A DEVICE FOR MEASURING TIME
JPS5125441A (en) * 1974-08-27 1976-03-02 Kobe Steel Ltd
CH616297B (en) * 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 (en) * 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 (en) * 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
CH599609B5 (en) * 1976-04-23 1978-05-31 Ebauches Sa
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 (en) * 1978-11-24 Ebauches Sa ELECTRONIC CLOCK PART WITH ANALOGUE DISPLAY INCLUDING AN ADJUSTABLE DIVISION RATE DIVIDER.
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
ATE294968T1 (en) * 1998-08-28 2005-05-15 Swatch Ag ELECTRONIC TIME MEASUREMENT DEVICE WITH TIME STATEMENT BASED ON A DECIMAL SYSTEM

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH1229067A4 (en) * 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
JPS4842189B1 (en) * 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
FR2150838B1 (en) 1977-03-18
JPS4833859A (en) 1973-05-14
IT962549B (en) 1973-12-31
US3777471A (en) 1973-12-11
CH1210672A4 (en) 1974-08-15
CA972823A (en) 1975-08-12
DE2241514A1 (en) 1973-03-01
CH558559A (en) 1975-01-31
HK23976A (en) 1976-04-30
DE2241514B2 (en) 1976-02-19
JPS5236429B2 (en) 1977-09-16
FR2150838A1 (en) 1973-04-13

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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