CH625666GA3 - Integrated circuit for an electronic timepiece - Google Patents

Integrated circuit for an electronic timepiece Download PDF

Info

Publication number
CH625666GA3
CH625666GA3 CH614978A CH614978A CH625666GA3 CH 625666G A3 CH625666G A3 CH 625666GA3 CH 614978 A CH614978 A CH 614978A CH 614978 A CH614978 A CH 614978A CH 625666G A3 CH625666G A3 CH 625666GA3
Authority
CH
Switzerland
Prior art keywords
integrated circuit
electronic timepiece
stepping motor
circuit
integrated
Prior art date
Application number
CH614978A
Other versions
CH625666B (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 CH625666B publication Critical patent/CH625666B/en
Application filed filed Critical
Publication of CH625666GA3 publication Critical patent/CH625666GA3/en

Links

Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
    • G04C3/00—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means
    • G04C3/14—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means incorporating a stepping motor
    • G04C3/143—Means to reduce power consumption by reducing pulse width or amplitude and related problems, e.g. detection of unwanted or missing step

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromechanical Clocks (AREA)
  • Control Of Stepping Motors (AREA)
  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)

Abstract

The integrated circuit (22) is provided with a waveform converter (24) and a state scanning circuit (26, 28), as a result of which the drive pulse width for the stepping motor (20) can be extended when the temperature or battery voltage falls below a predetermined value. A terminal (29) is provided at which an external control signal can optionally be applied so that different stepping motor designs can be driven by an integrated standard circuit. <IMAGE>
CH614978A 1977-06-06 1978-06-05 Integrated circuit for an electronic timepiece CH625666GA3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6584577A JPS541665A (en) 1977-06-06 1977-06-06 Ic for watches

Publications (2)

Publication Number Publication Date
CH625666B CH625666B (en)
CH625666GA3 true CH625666GA3 (en) 1981-10-15

Family

ID=13298744

Family Applications (1)

Application Number Title Priority Date Filing Date
CH614978A CH625666GA3 (en) 1977-06-06 1978-06-05 Integrated circuit for an electronic timepiece

Country Status (3)

Country Link
JP (1) JPS541665A (en)
CH (1) CH625666GA3 (en)
GB (1) GB1581917A (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4573317A (en) * 1985-03-11 1986-03-04 General Motors Corporation Diesel exhaust cleaner and regeneration burner system with indexing particulate trap
JPH0343517U (en) * 1989-09-07 1991-04-24
ATE532113T1 (en) * 2006-08-16 2011-11-15 Eta Sa Mft Horlogere Suisse ELECTRONIC CLOCK MOVEMENT WITH A RESONATOR
CN104854519B (en) * 2012-12-21 2017-08-04 Eta瑞士钟表制造股份有限公司 Thermal Compensation Precision Timepiece Circuit
EP2784605A1 (en) * 2013-03-27 2014-10-01 ETA SA Manufacture Horlogère Suisse Thermocompensated chronometer circuit

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE380588B (en) * 1973-12-21 1975-11-10 Foerenade Fabriksverken WORKING CYLINDER INCLUDED IN OPTIONAL DRAWABLE PISTON
JPS5199077A (en) * 1975-02-26 1976-09-01 Seiko Instr & Electronics DENSHIDOKEINIOKERUKUDOSOCHI

Also Published As

Publication number Publication date
CH625666B (en)
JPS541665A (en) 1979-01-08
GB1581917A (en) 1980-12-31

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