CA951913A - Timekeeper - Google Patents
TimekeeperInfo
- Publication number
- CA951913A CA951913A CA136,535A CA136535A CA951913A CA 951913 A CA951913 A CA 951913A CA 136535 A CA136535 A CA 136535A CA 951913 A CA951913 A CA 951913A
- Authority
- CA
- Canada
- Prior art keywords
- timekeeper
- 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
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
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (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)
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 |
---|---|
CA951913A true CA951913A (en) | 1974-07-30 |
Family
ID=4406474
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA136,535A Expired CA951913A (en) | 1971-10-15 | 1972-03-08 | Timekeeper |
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)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 |
CH589886B5 (en) * | 1974-10-14 | 1977-07-29 | Centre Electron Horloger | |
JPH0310916B2 (en) * | 1974-10-31 | 1991-02-14 | Citizen Watch Co Ltd | |
JPS5156680A (en) * | 1974-11-14 | 1976-05-18 | Seiko Instr & Electronics | Denshidokeino byoshuseisochi |
JPS5156677A (en) * | 1974-11-14 | 1976-05-18 | Seiko Instr & Electronics | |
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 |
CH599609B5 (en) * | 1976-04-23 | 1978-05-31 | Ebauches Sa | |
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 | |
CH620565B (en) * | 1977-02-28 | Ebauches Sa | ELECTRONIC WATCH PART. | |
CH621036B (en) * | 1977-02-28 | Berney Sa Jean Claude | INTEGRATED CIRCUIT FOR WATCHMAKING 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 |
JPS6124957Y2 (en) * | 1979-12-28 | 1986-07-26 | ||
US4349890A (en) * | 1979-12-28 | 1982-09-14 | International Business Machines Corp. | Time of day clock control |
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 |
EP2854294B1 (en) | 2013-09-30 | 2016-03-30 | Micro Crystal AG | Temperature compensated timing signal generator |
EP2854293B1 (en) | 2013-09-30 | 2016-03-30 | Micro Crystal AG | Temperature compensated timing signal generator |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH382073A (en) * | 1962-07-28 | 1964-03-31 | Suisse Horlogerie Rech Lab | High precision time group |
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 |
-
1971
- 1971-10-15 CH CH1511771A patent/CH554015A/xx unknown
-
1972
- 1972-03-02 BE BE780107A patent/BE780107A/en unknown
- 1972-03-07 FR FR7207840A patent/FR2156523B1/fr not_active Expired
- 1972-03-08 GB GB1070372A patent/GB1392524A/en not_active Expired
- 1972-03-08 CA CA136,535A patent/CA951913A/en not_active Expired
- 1972-03-09 DE DE2211441A patent/DE2211441A1/en active Pending
- 1972-03-10 JP JP2407072A patent/JPS5623116B2/ja not_active Expired
- 1972-03-16 IT IT21980/72A patent/IT950298B/en active
- 1972-03-21 US US236774A patent/US3895486A/en not_active Expired - Lifetime
- 1972-03-30 NL NL7204364A patent/NL7204364A/xx not_active Application Discontinuation
-
1980
- 1980-04-10 HK HK183/80A patent/HK18380A/en unknown
Also Published As
Publication number | Publication date |
---|---|
DE2211441A1 (en) | 1973-04-19 |
GB1392524A (en) | 1975-04-30 |
CH554015A (en) | 1974-09-13 |
HK18380A (en) | 1980-04-18 |
US3895486A (en) | 1975-07-22 |
NL7204364A (en) | 1973-04-17 |
CH1511771A4 (en) | 1973-12-28 |
BE780107A (en) | 1972-07-03 |
JPS5623116B2 (en) | 1981-05-29 |
FR2156523B1 (en) | 1977-01-14 |
IT950298B (en) | 1973-06-20 |
JPS4848163A (en) | 1973-07-07 |
FR2156523A1 (en) | 1973-06-01 |
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