CH620084B - Piece d'horlogerie electronique a affichage analogique. - Google Patents

Piece d'horlogerie electronique a affichage analogique.

Info

Publication number
CH620084B
CH620084B CH109777A CH109777A CH620084B CH 620084 B CH620084 B CH 620084B CH 109777 A CH109777 A CH 109777A CH 109777 A CH109777 A CH 109777A CH 620084 B CH620084 B CH 620084B
Authority
CH
Switzerland
Prior art keywords
electronic watch
watch part
analogue display
transducer
rotor
Prior art date
Application number
CH109777A
Other languages
English (en)
Other versions
CH620084GA3 (fr
Inventor
Norio Takahashi
Original Assignee
Seiko Instr & Electronics
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 of CH620084B publication Critical patent/CH620084B/fr
Application filed by Seiko Instr & Electronics filed Critical Seiko Instr & Electronics
Publication of CH620084GA3 publication Critical patent/CH620084GA3/xx

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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S388/00—Electricity: motor control systems
    • Y10S388/923—Specific feedback condition or device
    • Y10S388/93—Load or torque

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromechanical Clocks (AREA)
  • Control Of Stepping Motors (AREA)
  • Electric Clocks (AREA)
  • Pulse Circuits (AREA)
CH109777A 1976-01-29 1977-01-28 Piece d'horlogerie electronique a affichage analogique. CH620084B (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP863176A JPS5292560A (en) 1976-01-29 1976-01-29 Switch box drive pulse width control circuit for electronic clocks

Publications (2)

Publication Number Publication Date
CH620084B true CH620084B (fr)
CH620084GA3 CH620084GA3 (fr) 1980-11-14

Family

ID=11698289

Family Applications (1)

Application Number Title Priority Date Filing Date
CH109777A CH620084B (fr) 1976-01-29 1977-01-28 Piece d'horlogerie electronique a affichage analogique.

Country Status (4)

Country Link
US (1) US4114364A (fr)
JP (1) JPS5292560A (fr)
CH (1) CH620084B (fr)
GB (1) GB1545651A (fr)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5345575A (en) * 1976-10-06 1978-04-24 Seiko Epson Corp Electronic wristwatch
JPS53114467A (en) * 1977-03-16 1978-10-05 Seiko Instr & Electronics Ltd Electronic watch
JPS53136870A (en) * 1977-04-23 1978-11-29 Seiko Instr & Electronics Ltd Electronic watch
JPS53132382A (en) * 1977-04-23 1978-11-18 Seiko Instr & Electronics Ltd Electronic watch
JPS53132380A (en) * 1977-04-23 1978-11-18 Seiko Instr & Electronics Ltd Electronic watch
JPS53132384A (en) * 1977-04-23 1978-11-18 Seiko Instr & Electronics Ltd Electronic watch
JPS53132386A (en) * 1977-04-23 1978-11-18 Seiko Instr & Electronics Ltd Electronic watch
GB2064834B (en) * 1977-09-26 1982-12-08 Citizen Watch Co Ltd Drive system for stepping motor in a timepiece
JPS5477169A (en) * 1977-12-02 1979-06-20 Seiko Instr & Electronics Ltd Electronic watch
FR2459579A1 (fr) * 1979-06-21 1981-01-09 Suisse Horlogerie Detecteur d'avance d'un moteur pas a pas
CH640999B (fr) * 1980-08-25 Ebauchesfabrik Eta Ag Procede et dispositif de commande d'une moteur pas a pas de piece d'horlogerie electronique.
CH647383GA3 (fr) * 1981-02-04 1985-01-31
CH644989GA3 (fr) * 1981-03-18 1984-09-14
CH657960GA3 (fr) * 1984-03-23 1986-10-15

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5319944B2 (fr) * 1971-09-25 1978-06-23
JPS5542356B2 (fr) * 1972-12-22 1980-10-30
JPS5740759B2 (fr) * 1973-07-17 1982-08-30
JPS5336402Y2 (fr) * 1974-01-17 1978-09-05
US3892066A (en) * 1974-02-27 1975-07-01 Microna Inc Synchronized watch movement
JPS50120373A (fr) * 1974-03-05 1975-09-20
GB1481024A (en) * 1974-07-15 1977-07-27 Suisse Horlogerie Battery powered electronic timepiece with voltage regulation
JPS5110798A (fr) * 1974-07-17 1976-01-28 Citizen Watch Co Ltd

Also Published As

Publication number Publication date
GB1545651A (en) 1979-05-10
US4114364A (en) 1978-09-19
JPS5292560A (en) 1977-08-04
CH620084GA3 (fr) 1980-11-14

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