FR2216613A1 - - Google Patents

Info

Publication number
FR2216613A1
FR2216613A1 FR7403844A FR7403844A FR2216613A1 FR 2216613 A1 FR2216613 A1 FR 2216613A1 FR 7403844 A FR7403844 A FR 7403844A FR 7403844 A FR7403844 A FR 7403844A FR 2216613 A1 FR2216613 A1 FR 2216613A1
Authority
FR
France
Prior art keywords
frequency
flop
pulse
frequency divider
output
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.)
Granted
Application number
FR7403844A
Other languages
French (fr)
Other versions
FR2216613B3 (en
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of FR2216613A1 publication Critical patent/FR2216613A1/fr
Application granted granted Critical
Publication of FR2216613B3 publication Critical patent/FR2216613B3/fr
Expired legal-status Critical Current

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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Electromagnetism (AREA)
  • Power Engineering (AREA)
  • Electromechanical Clocks (AREA)
  • Electric Clocks (AREA)
  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Automatic Disk Changers (AREA)

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.
FR7403844A 1973-02-06 1974-02-05 Expired FR2216613B3 (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
FR2216613A1 true FR2216613A1 (en) 1974-08-30
FR2216613B3 FR2216613B3 (en) 1976-11-26

Family

ID=5871059

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7403844A Expired FR2216613B3 (en) 1973-02-06 1974-02-05

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
WO1980001113A1 (en) * 1978-11-20 1980-05-29 Braun Ag Time-keeper in particular quartz controlled clock
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
DE2305682A1 (en) 1974-08-29
JPS49113671A (en) 1974-10-30
JPS6137584B2 (en) 1986-08-25
DE2305682B2 (en) 1978-02-16
DE2305682C3 (en) 1978-10-05
FR2216613B3 (en) 1976-11-26
CH613356B (en)
CH613356GA3 (en) 1979-09-28

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Legal Events

Date Code Title Description
TP Transmission of property