CH613356GA3 - Time-keeping unit with an electronically controlled drive system - Google Patents

Time-keeping unit with an electronically controlled drive system Download PDF

Info

Publication number
CH613356GA3
CH613356GA3 CH157474A CH157474A CH613356GA3 CH 613356G A3 CH613356G A3 CH 613356GA3 CH 157474 A CH157474 A CH 157474A CH 157474 A CH157474 A CH 157474A CH 613356G A3 CH613356G A3 CH 613356GA3
Authority
CH
Switzerland
Prior art keywords
frequency
flop
pulse
frequency divider
output
Prior art date
Application number
CH157474A
Other versions
CH613356B (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 CH613356B publication Critical patent/CH613356B/en
Application filed filed Critical
Publication of CH613356GA3 publication Critical patent/CH613356GA3/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
    • G—PHYSICS
    • G04—HOROLOGY
    • G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
    • G04C11/00—Synchronisation of independently-driven clocks
    • G04C11/08—Synchronisation of independently-driven clocks using an electro-magnet or-motor for oscillation correction
    • G04C11/081—Synchronisation of independently-driven clocks using an electro-magnet or-motor for oscillation correction using an electro-magnet
    • G04C11/084—Synchronisation of independently-driven clocks using an electro-magnet or-motor for oscillation correction using an electro-magnet acting on the balance
    • 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
    • G04C3/04—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means wherein movement is regulated by a balance
    • G04C3/06—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means wherein movement is regulated by a balance using electromagnetic coupling between electric power source and balance
    • G04C3/065—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means wherein movement is regulated by a balance using electromagnetic coupling between electric power source and balance the balance controlling gear-train by means of static switches, e.g. transistor circuits
    • G04C3/067—Driving circuits with distinct detecting and driving coils

Abstract

The display system (4) is driven by an electronically controlled drive device (5, 6, 9). The drive device comprises an unbalance system (5) which is controlled by an electronic switching device (9) and, via a gear (6) drives the display system constructed as a pointer mechanism. The unbalance system (5) can oscillate at a first or at a second frequency. Also present are a quartz oscillator (1) and an electric frequency divider (2). The output of the frequency divider is connected to one input of a bistable flip-flop (3). With each zero passage, the unbalance system generates a voltage pulse which is fed via a pulse-shaping stage (5a) to a further frequency divider (8). The output of the further frequency divider is connected to the other input of the bistable flip-flop. The two said frequency dividers are constructed such that the pulse frequency of the pulse trains fed to the two inputs of the bistable flip-flop deviate only slightly from one another. The electronic switching device (9) is controlled by the pulses occurring at the output of the flip-flop, whose width depends on the phase relationship between the said pulse trains, and the unbalance system is influenced to oscillate either at the first or at the second frequency. <IMAGE>
CH157474A 1973-02-06 1974-02-05 Time-keeping unit with an electronically controlled drive system CH613356GA3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2305682A DE2305682C3 (en) 1973-02-06 1973-02-06 Time-keeping device, in particular a quartz wristwatch with an electronically controlled display system

Publications (2)

Publication Number Publication Date
CH613356B CH613356B (en)
CH613356GA3 true CH613356GA3 (en) 1979-09-28

Family

ID=5871059

Family Applications (1)

Application Number Title Priority Date Filing Date
CH157474A CH613356GA3 (en) 1973-02-06 1974-02-05 Time-keeping unit with an electronically controlled drive system

Country Status (4)

Country Link
JP (1) JPS6137584B2 (en)
CH (1) CH613356GA3 (en)
DE (1) DE2305682C3 (en)
FR (1) FR2216613B3 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55501033A (en) * 1978-11-20 1980-11-27
DE2850325C3 (en) * 1978-11-20 1981-07-09 Braun Ag, 6000 Frankfurt Time-keeping device, especially a large quartz clock with an electronically controlled display system
DE2937838C2 (en) * 1979-09-19 1986-08-28 Braun Ag, 6000 Frankfurt Method and arrangement for regulating speed and phase position in synchronous motors
DE3230217A1 (en) * 1982-08-13 1984-02-23 Braun Ag, 6000 Frankfurt Integrated circuit for a clock or a clock radio with analog time display

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5319944A (en) * 1976-08-09 1978-02-23 Mitsubishi Heavy Ind Ltd Holder for bent tubes

Also Published As

Publication number Publication date
CH613356B (en)
FR2216613A1 (en) 1974-08-30
FR2216613B3 (en) 1976-11-26
JPS49113671A (en) 1974-10-30
JPS6137584B2 (en) 1986-08-25
DE2305682C3 (en) 1978-10-05
DE2305682A1 (en) 1974-08-29
DE2305682B2 (en) 1978-02-16

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