CH625670GA3 - - Google Patents

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Publication number
CH625670GA3
CH625670GA3 CH15780A CH15780A CH625670GA3 CH 625670G A3 CH625670G A3 CH 625670GA3 CH 15780 A CH15780 A CH 15780A CH 15780 A CH15780 A CH 15780A CH 625670G A3 CH625670G A3 CH 625670GA3
Authority
CH
Switzerland
Prior art keywords
circuit
oscillator
correction
frequency
frequency generator
Prior art date
Application number
CH15780A
Other versions
CH625670B (en
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
Publication of CH625670B publication Critical patent/CH625670B/en
Application filed filed Critical
Priority to CH15780A priority Critical patent/CH625670B/en
Priority to DE8080810398T priority patent/DE3069389D1/en
Priority to EP80810398A priority patent/EP0032358B1/en
Priority to US06/218,405 priority patent/US4415870A/en
Priority to JP200481A priority patent/JPS56104504A/en
Publication of CH625670GA3 publication Critical patent/CH625670GA3/xx

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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
    • G04G3/027—Circuits for deriving low frequency timing pulses from pulses of higher frequency by combining pulse-trains of different frequencies, e.g. obtained from two independent oscillators or from a common oscillator by means of different frequency dividing ratios
    • G—PHYSICS
    • G04—HOROLOGY
    • G04F—TIME-INTERVAL MEASURING
    • G04F5/00—Apparatus for producing preselected time intervals for use as timing standards
    • G04F5/04—Apparatus for producing preselected time intervals for use as timing standards using oscillators with electromechanical resonators producing electric oscillations or timing pulses
    • G04F5/06—Apparatus for producing preselected time intervals for use as timing standards using oscillators with electromechanical resonators producing electric oscillations or timing pulses using piezoelectric resonators
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
    • H03L1/00—Stabilisation of generator output against variations of physical values, e.g. power supply
    • H03L1/02—Stabilisation of generator output against variations of physical values, e.g. power supply against variations of temperature only
    • H03L1/022—Stabilisation of generator output against variations of physical values, e.g. power supply against variations of temperature only by indirect stabilisation, i.e. by generating an electrical correction signal which is a function of the temperature
    • H03L1/026—Stabilisation of generator output against variations of physical values, e.g. power supply against variations of temperature only by indirect stabilisation, i.e. by generating an electrical correction signal which is a function of the temperature by using a memory for digitally storing correction values
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
    • H03L1/00—Stabilisation of generator output against variations of physical values, e.g. power supply
    • H03L1/02—Stabilisation of generator output against variations of physical values, e.g. power supply against variations of temperature only
    • H03L1/022—Stabilisation of generator output against variations of physical values, e.g. power supply against variations of temperature only by indirect stabilisation, i.e. by generating an electrical correction signal which is a function of the temperature
    • H03L1/027—Stabilisation of generator output against variations of physical values, e.g. power supply against variations of temperature only by indirect stabilisation, i.e. by generating an electrical correction signal which is a function of the temperature by using frequency conversion means which is variable with temperature, e.g. mixer, frequency divider, pulse add/subtract logic circuit
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
    • H03L1/00—Stabilisation of generator output against variations of physical values, e.g. power supply
    • H03L1/02—Stabilisation of generator output against variations of physical values, e.g. power supply against variations of temperature only
    • H03L1/028—Stabilisation of generator output against variations of physical values, e.g. power supply against variations of temperature only of generators comprising piezoelectric resonators

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Oscillators With Electromechanical Resonators (AREA)
  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)

Abstract

An oscillator circuit having a digital temperature compensation circuit which contains two low frequency quartz oscillators, a beat frequency generator and a correction circuit and a logic circuit selectively controlling an addition circuit. The beat frequency generator receives the frequencies generated by the low frequency oscillators. The difference between the low frequencies is fed into the correction circuit which in turn cooperates with the logic circuit. The beat frequency generator is controlled by a high frequency oscillator having an integrated RC circuit and the correction circuit has a PROM in which the correction functions are stored. The selectively controlled addition circuit acts on the output signal of the first oscillator and corrects the frequency thereof. An oscillator circuit connected in such a manner requires no pre-selection of the quartz crystals in pairs and the correction may be effected by influencing the high frequency oscillator, whereby a high degree of accuracy may be obtained.
CH15780A 1980-01-10 1980-01-10 OSCILLATOR WITH DIGITAL TEMPERATURE COMPENSATION. CH625670B (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
CH15780A CH625670B (en) 1980-01-10 1980-01-10 OSCILLATOR WITH DIGITAL TEMPERATURE COMPENSATION.
DE8080810398T DE3069389D1 (en) 1980-01-10 1980-12-17 Oscillator with digital temperature compensation
EP80810398A EP0032358B1 (en) 1980-01-10 1980-12-17 Oscillator with digital temperature compensation
US06/218,405 US4415870A (en) 1980-01-10 1980-12-19 Oscillator circuit with digital temperature compensation
JP200481A JPS56104504A (en) 1980-01-10 1981-01-09 Oscillator and method of manufacturing same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH15780A CH625670B (en) 1980-01-10 1980-01-10 OSCILLATOR WITH DIGITAL TEMPERATURE COMPENSATION.

Publications (2)

Publication Number Publication Date
CH625670B CH625670B (en)
CH625670GA3 true CH625670GA3 (en) 1981-10-15

Family

ID=4180553

Family Applications (1)

Application Number Title Priority Date Filing Date
CH15780A CH625670B (en) 1980-01-10 1980-01-10 OSCILLATOR WITH DIGITAL TEMPERATURE COMPENSATION.

Country Status (5)

Country Link
US (1) US4415870A (en)
EP (1) EP0032358B1 (en)
JP (1) JPS56104504A (en)
CH (1) CH625670B (en)
DE (1) DE3069389D1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4761771A (en) * 1984-08-09 1988-08-02 Seiko Epson Corporation Electronic timekeeping apparatus with temperature compensation and method for compensating same

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH650122GA3 (en) * 1981-12-17 1985-07-15
GB2132042B (en) * 1982-12-15 1986-09-24 British Broadcasting Corp Frequency and timing sources
US4872765A (en) * 1983-04-20 1989-10-10 The United States Of America As Represented By The Secretary Of The Army Dual mode quartz thermometric sensing device
US4712078A (en) * 1985-03-27 1987-12-08 The United States Of America As Represented By The Secretary Of The Air Force Dielectric resonator oscillators with digital temperature compensation
CA2053254C (en) * 1989-04-27 2001-03-20 Roderick I.L. Guthrie Single-use disposable molten metal inclusion sensor
BR9007333A (en) * 1989-04-27 1992-04-21 Guthrie Res Ass CAST METAL INCLUSION SENSOR
WO1996003799A1 (en) * 1994-07-27 1996-02-08 Citizen Watch Co., Ltd. Temperature compensation type quartz oscillator
US5831485A (en) * 1997-09-04 1998-11-03 Tektronix, Inc. Method and apparatus for producing a temperature stable frequency using two oscillators
US6693443B2 (en) 1999-04-02 2004-02-17 Worcester Polytechnic Institute Systems for detecting and measuring inclusions
JP4679782B2 (en) * 1999-12-10 2011-04-27 富士通株式会社 Temperature sensor
US7019680B2 (en) * 2003-04-25 2006-03-28 Jackson Gregory P Hand-held, continuously variable, remote controller
US7443258B2 (en) 2006-04-06 2008-10-28 Sitime Corporation Oscillator system having a plurality of microelectromechanical resonators and method of designing, controlling or operating same
US7446619B2 (en) * 2006-06-14 2008-11-04 Sitime Corporation Temperature measurement system having a plurality of microelectromechanical resonators and method of operating same
US20080290494A1 (en) * 2007-05-21 2008-11-27 Markus Lutz Backside release and/or encapsulation of microelectromechanical structures and method of manufacturing same

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1481336A (en) * 1973-10-24 1977-07-27 Citizen Watch Co Ltd Electronic timepiece
JPS5071362A (en) * 1973-10-24 1975-06-13
GB1570660A (en) * 1976-06-30 1980-07-02 Suwa Seikosha Kk Electronic timepiece
JPS5312255A (en) * 1976-07-21 1978-02-03 Seiko Epson Corp Electronic clock
JPS5325341A (en) * 1976-08-23 1978-03-09 Seiko Epson Corp Electronic watch
JPS5441773A (en) 1977-09-09 1979-04-03 Seiko Instr & Electronics Ltd Electronic watch
JPS5476261A (en) * 1977-11-30 1979-06-18 Seiko Instr & Electronics Ltd Electronic wristwatch
JPS5479672A (en) * 1977-12-07 1979-06-25 Seiko Instr & Electronics Ltd Temperature compensating electronic watch
JPS5485766A (en) * 1977-12-21 1979-07-07 Seiko Epson Corp High accuracy standard signal circuit for watches
JPS54118871A (en) * 1978-03-07 1979-09-14 Seiko Epson Corp Crystal oscillation type wristwatch

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4761771A (en) * 1984-08-09 1988-08-02 Seiko Epson Corporation Electronic timekeeping apparatus with temperature compensation and method for compensating same

Also Published As

Publication number Publication date
EP0032358A2 (en) 1981-07-22
CH625670B (en)
JPS56104504A (en) 1981-08-20
EP0032358A3 (en) 1981-12-02
US4415870A (en) 1983-11-15
EP0032358B1 (en) 1984-10-03
DE3069389D1 (en) 1984-11-08

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