HK18380A - Timekeepers - Google Patents

Timekeepers

Info

Publication number
HK18380A
HK18380A HK183/80A HK18380A HK18380A HK 18380 A HK18380 A HK 18380A HK 183/80 A HK183/80 A HK 183/80A HK 18380 A HK18380 A HK 18380A HK 18380 A HK18380 A HK 18380A
Authority
HK
Hong Kong
Prior art keywords
memory
logical state
division ratio
divider
ratio
Prior art date
Application number
HK183/80A
Original Assignee
Centre Electron Horloger
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 Centre Electron Horloger filed Critical Centre Electron Horloger
Publication of HK18380A publication Critical patent/HK18380A/en

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
    • 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
    • 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
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F7/00—Methods or arrangements for processing data by operating upon the order or content of the data handled
    • G06F7/60—Methods or arrangements for performing computations using a digital non-denominational number representation, i.e. number representation without radix; Computing devices using combinations of denominational and non-denominational quantity representations, e.g. using difunction pulse trains, STEELE computers, phase computers
    • G06F7/68—Methods or arrangements for performing computations using a digital non-denominational number representation, i.e. number representation without radix; Computing devices using combinations of denominational and non-denominational quantity representations, e.g. using difunction pulse trains, STEELE computers, phase computers using pulse rate multipliers or dividers pulse rate multipliers or dividers per se

Landscapes

  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Mathematical Optimization (AREA)
  • Mathematical Analysis (AREA)
  • Computing Systems (AREA)
  • Mathematical Physics (AREA)
  • Pure & Applied Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • Computational Mathematics (AREA)
  • Electric Clocks (AREA)
  • Electronic Switches (AREA)

Abstract

A timekeeper comprises a quartz crystal resonator having a stable frequency but with a relatively large tolerance, and a frequency divider with an adjustable divison ratio. Said divider has auxiliary electrical inputs the logical state of which determines the division ratio, and a memory, for example an electrically alterable electronic memory, supplies stored data to determine the logical state of the auxiliary inputs and hence the division ratio. The memory may comprise volatile and permanent parts, the permanent part intermittently regenerating data stored in the volatile part.
HK183/80A 1971-10-15 1980-04-10 Timekeepers HK18380A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1511771A CH554015A (en) 1971-10-15 1971-10-15

Publications (1)

Publication Number Publication Date
HK18380A true HK18380A (en) 1980-04-18

Family

ID=4406474

Family Applications (1)

Application Number Title Priority Date Filing Date
HK183/80A HK18380A (en) 1971-10-15 1980-04-10 Timekeepers

Country Status (11)

Country Link
US (1) US3895486A (en)
JP (1) JPS5623116B2 (en)
BE (1) BE780107A (en)
CA (1) CA951913A (en)
CH (1) CH554015A (en)
DE (1) DE2211441A1 (en)
FR (1) FR2156523B1 (en)
GB (1) GB1392524A (en)
HK (1) HK18380A (en)
IT (1) IT950298B (en)
NL (1) NL7204364A (en)

Families Citing this family (61)

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JPS4919854A (en) * 1972-06-12 1974-02-21
JPS549912B2 (en) * 1972-09-22 1979-04-28
US4015419A (en) * 1972-10-02 1977-04-05 Citizen Watch Co., Ltd. Electronic timepiece
JPS4994255A (en) * 1973-01-11 1974-09-06
US3967442A (en) * 1973-02-01 1976-07-06 Berney Jean Claude Electric watch having an electromechanical movement including a correction mechanism for small errors
JPS49130774A (en) * 1973-04-19 1974-12-14
US4062178A (en) * 1973-04-19 1977-12-13 Kabushiki Kaisha Suwa Seikosha Electronic timepiece
JPS5756034B2 (en) * 1973-09-10 1982-11-27
JPS5759508B2 (en) * 1973-09-21 1982-12-15 Suwa Seikosha Kk
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
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
US4133169A (en) * 1974-08-30 1979-01-09 Ebauches S.A. Electronic circuit for a quartz crystal watch
CH1377974A4 (en) * 1974-10-14 1976-10-29
JPH0310916B2 (en) * 1974-10-31 1991-02-14 Citizen Watch Co Ltd
JPS5156677A (en) * 1974-11-14 1976-05-18 Seiko Instr & Electronics
JPS5156680A (en) * 1974-11-14 1976-05-18 Seiko Instr & Electronics Denshidokeino byoshuseisochi
JPS5170676A (en) * 1974-12-17 1976-06-18 Casio Computer Co Ltd
JPS5179371A (en) * 1974-12-18 1976-07-10 Suwa Seikosha Kk
JPS5181165A (en) * 1975-01-13 1976-07-15 Suwa Seikosha Kk
JPS5188257A (en) * 1975-01-31 1976-08-02 Denshidokeino kankyuchoseisochi
JPS5547717B2 (en) * 1975-03-08 1980-12-02
JPS6015905B2 (en) * 1975-06-18 1985-04-22 セイコーエプソン株式会社 electronic clock
JPS6024433B2 (en) * 1975-08-01 1985-06-12 シチズン時計株式会社 clock circuit
JPS5227247A (en) * 1975-08-26 1977-03-01 Seikosha Co Ltd Signal generator with gt-cut quatz vibrator
JPS6046389B2 (en) * 1975-09-18 1985-10-15 シャープ株式会社 electronic clock
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
US4141208A (en) * 1976-01-19 1979-02-27 Hughes Aircraft Company Digitally tuned timepiece
US4150536A (en) * 1976-01-28 1979-04-24 Citizen Watch Company Limited Electronic timepiece
DE2616398C2 (en) * 1976-04-14 1978-06-01 Siemens Ag, 1000 Berlin Und 8000 Muenchen Circuit arrangement for regulating the pulse repetition frequency of a signal
CH512076A4 (en) * 1976-04-23 1977-06-30
US4068462A (en) * 1976-05-17 1978-01-17 Fairchild Camera And Instrument Corporation Frequency adjustment circuit
JPS52146273A (en) * 1976-05-29 1977-12-05 Casio Comput Co Ltd Electronic watch device
CH608333GA3 (en) 1976-11-29 1979-01-15 Electronic time-measuring device
CH621036B (en) * 1977-02-28 Berney Sa Jean Claude INTEGRATED CIRCUIT FOR WATCHMAKING PART.
CH620565B (en) * 1977-02-28 Ebauches Sa ELECTRONIC WATCH PART.
CH617058B (en) * 1977-07-18 Berney Sa Jean Claude ELECTRONIC WATCH PART.
JPS5422865A (en) * 1977-07-21 1979-02-21 Seiko Epson Corp Miniature electronic watch
US4199726A (en) * 1977-09-23 1980-04-22 Bukosky Allen A Digitally tunable integrated circuit pulse generator and tuning system
JPS6039193B2 (en) * 1977-10-18 1985-09-04 セイコーエプソン株式会社 electronic clock
JPS54105580A (en) * 1978-02-07 1979-08-18 Seiko Epson Corp Crystal oscillation type wristwatch
JPS54134669A (en) * 1978-04-11 1979-10-19 Citizen Watch Co Ltd Electronic watch
JPS55129789A (en) * 1979-03-29 1980-10-07 Seiko Epson Corp Electronic watch
US4282595A (en) * 1979-12-21 1981-08-04 Timex Corporation Method for digital frequency trimming an oscillator in an electronic timepiece
US4290130A (en) * 1979-12-21 1981-09-15 Timex Corporation Digital frequency trimmed electronic timepiece
US4349890A (en) * 1979-12-28 1982-09-14 International Business Machines Corp. Time of day clock control
JPS6124957Y2 (en) * 1979-12-28 1986-07-26
JPS56140281A (en) * 1980-04-01 1981-11-02 Citizen Watch Co Ltd Electronic timepiece
CH643106B (en) * 1980-11-26 Suisse Horlogerie TIME-GUARD INCLUDING A CHAIN OF DIVIDERS WITH ADJUSTABLE DIVISION RATIO.
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
US4724366A (en) * 1982-05-17 1988-02-09 International Business Machines Corporation Randomized motor drive
JPS6121116U (en) * 1985-02-28 1986-02-07 セイコーエプソン株式会社 time standard
CH664868GA3 (en) * 1986-07-10 1988-04-15
US4897860A (en) * 1988-03-02 1990-01-30 Dallas Semiconductor Corporation Programmable time base circuit with protected internal calibration
DE4031532C1 (en) * 1990-10-05 1992-03-26 D.I.E.N.E.S Apparatebau Gmbh, 6052 Muehlheim, De Variable frequency generator e.g. for motor control converter - has gate circuit between pulse generating oscillator and frequency divider
EP1253488B1 (en) 2001-04-27 2007-04-11 CSEM Centre Suisse d'Electronique et de Microtechnique S.A. - Recherche et Développement Time keeping device with automatic time correction and method for correcting such a time keeper
EP1748561A1 (en) 2005-07-25 2007-01-31 Jaquet Ingénieur Conseils Sàrl Temperature compensation process for a crystal time base
EP2854293B1 (en) 2013-09-30 2016-03-30 Micro Crystal AG Temperature compensated timing signal generator
EP2854294B1 (en) 2013-09-30 2016-03-30 Micro Crystal AG Temperature compensated timing signal generator

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH907762A4 (en) * 1962-07-28 1964-03-31
FR1448920A (en) * 1965-06-28 1966-08-12 Csf Pulse counters
US3464018A (en) * 1966-08-26 1969-08-26 Nasa Digitally controlled frequency synthesizer
US3364439A (en) * 1966-10-07 1968-01-16 Tele Signal Corp Frequency corrected digital clock with memory in phase control loop
US3581066A (en) * 1968-03-06 1971-05-25 Lear Siegler Inc Programmable counting circuit
CH507620A (en) * 1968-08-21 1971-05-15 Fujitsu Ltd Converter for converting pulses that occur at irregular intervals into a pulse train with a balanced repetition frequency of the individual pulses
US3540207A (en) * 1968-09-20 1970-11-17 Timex Corp Electronic watch counting circuit
US3621403A (en) * 1969-03-28 1971-11-16 Magnovox Co The Digital frequency modulated sweep generator
US3629582A (en) * 1969-04-24 1971-12-21 Dale R Koehler Timepiece with radioactive timekeeping standard
US3719838A (en) * 1971-08-02 1973-03-06 Bulova Watch Co Inc Temperature compensating digital system for electromechanical resonators
US3777471A (en) * 1971-08-27 1973-12-11 Bulova Watch Co Inc Presettable frequency divider for electronic timepiece

Also Published As

Publication number Publication date
US3895486A (en) 1975-07-22
FR2156523A1 (en) 1973-06-01
JPS5623116B2 (en) 1981-05-29
IT950298B (en) 1973-06-20
NL7204364A (en) 1973-04-17
GB1392524A (en) 1975-04-30
CH1511771A4 (en) 1973-12-28
BE780107A (en) 1972-07-03
JPS4848163A (en) 1973-07-07
DE2211441A1 (en) 1973-04-19
CA951913A (en) 1974-07-30
CH554015A (en) 1974-09-13
FR2156523B1 (en) 1977-01-14

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