JPS58173479A - 電子時計 - Google Patents

電子時計

Info

Publication number
JPS58173479A
JPS58173479A JP5694882A JP5694882A JPS58173479A JP S58173479 A JPS58173479 A JP S58173479A JP 5694882 A JP5694882 A JP 5694882A JP 5694882 A JP5694882 A JP 5694882A JP S58173479 A JPS58173479 A JP S58173479A
Authority
JP
Japan
Prior art keywords
circuit
rotation detection
drive
rotor
step motor
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
JP5694882A
Other languages
English (en)
Japanese (ja)
Other versions
JPH0449673B2 (OSRAM
Inventor
Shuji Otawa
脩二 大多和
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
Daini Seikosha Co Ltd
Seiko Instruments and Electronics Ltd
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 Daini Seikosha Co Ltd, Seiko Instruments and Electronics Ltd filed Critical Daini Seikosha Co Ltd
Priority to JP5694882A priority Critical patent/JPS58173479A/ja
Publication of JPS58173479A publication Critical patent/JPS58173479A/ja
Publication of JPH0449673B2 publication Critical patent/JPH0449673B2/ja
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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromechanical Clocks (AREA)
  • Control Of Stepping Motors (AREA)
JP5694882A 1982-04-06 1982-04-06 電子時計 Granted JPS58173479A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5694882A JPS58173479A (ja) 1982-04-06 1982-04-06 電子時計

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5694882A JPS58173479A (ja) 1982-04-06 1982-04-06 電子時計

Publications (2)

Publication Number Publication Date
JPS58173479A true JPS58173479A (ja) 1983-10-12
JPH0449673B2 JPH0449673B2 (OSRAM) 1992-08-12

Family

ID=13041770

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5694882A Granted JPS58173479A (ja) 1982-04-06 1982-04-06 電子時計

Country Status (1)

Country Link
JP (1) JPS58173479A (OSRAM)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53114467A (en) * 1977-03-16 1978-10-05 Seiko Instr & Electronics Ltd Electronic watch
JPS547745A (en) * 1977-06-20 1979-01-20 Matsushita Electric Works Ltd Door
JPS5587977A (en) * 1978-12-26 1980-07-03 Seiko Instr & Electronics Ltd Device for detecting electronic watch

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53114467A (en) * 1977-03-16 1978-10-05 Seiko Instr & Electronics Ltd Electronic watch
JPS547745A (en) * 1977-06-20 1979-01-20 Matsushita Electric Works Ltd Door
JPS5587977A (en) * 1978-12-26 1980-07-03 Seiko Instr & Electronics Ltd Device for detecting electronic watch

Also Published As

Publication number Publication date
JPH0449673B2 (OSRAM) 1992-08-12

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