FR2389168B1 - - Google Patents

Info

Publication number
FR2389168B1
FR2389168B1 FR7812043A FR7812043A FR2389168B1 FR 2389168 B1 FR2389168 B1 FR 2389168B1 FR 7812043 A FR7812043 A FR 7812043A FR 7812043 A FR7812043 A FR 7812043A FR 2389168 B1 FR2389168 B1 FR 2389168B1
Authority
FR
France
Prior art keywords
pulses
rotor
detect
providing
circuit
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
Application number
FR7812043A
Other languages
English (en)
French (fr)
Other versions
FR2389168A1 (fr
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.)
Seiko Instruments Inc
Original Assignee
Seiko Instruments Inc
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 Seiko Instruments Inc filed Critical Seiko Instruments Inc
Publication of FR2389168A1 publication Critical patent/FR2389168A1/fr
Application granted granted Critical
Publication of FR2389168B1 publication Critical patent/FR2389168B1/fr
Granted 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
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Control Of Stepping Motors (AREA)
  • Electromechanical Clocks (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)
FR7812043A 1977-04-25 1978-04-24 Mouvement d'horlogerie electronique Granted FR2389168A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4766777A JPS53133066A (en) 1977-04-25 1977-04-25 Electronic watch

Publications (2)

Publication Number Publication Date
FR2389168A1 FR2389168A1 (fr) 1978-11-24
FR2389168B1 true FR2389168B1 (en:Method) 1983-10-21

Family

ID=12781603

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7812043A Granted FR2389168A1 (fr) 1977-04-25 1978-04-24 Mouvement d'horlogerie electronique

Country Status (4)

Country Link
JP (1) JPS53133066A (en:Method)
CH (1) CH630224GA3 (en:Method)
DE (1) DE2817565A1 (en:Method)
FR (1) FR2389168A1 (en:Method)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5740759B2 (en:Method) * 1973-07-17 1982-08-30
JPS51101577A (ja) * 1975-03-04 1976-09-08 Seiko Instr & Electronics Denshidokeisochinoshuseisochi
JPS51126880A (en) * 1975-04-26 1976-11-05 Seiko Instr & Electronics Ltd Automatic control circuit of pulse width
JPS5312669A (en) * 1976-07-21 1978-02-04 Seiko Instr & Electronics Ltd Hands reversing device of electronic watch

Also Published As

Publication number Publication date
FR2389168A1 (fr) 1978-11-24
CH630224GA3 (en) 1982-06-15
JPS53133066A (en) 1978-11-20
DE2817565A1 (de) 1978-11-02
CH630224B (fr)

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Legal Events

Date Code Title Description
ST Notification of lapse