JPH0449673B2 - - Google Patents

Info

Publication number
JPH0449673B2
JPH0449673B2 JP57056948A JP5694882A JPH0449673B2 JP H0449673 B2 JPH0449673 B2 JP H0449673B2 JP 57056948 A JP57056948 A JP 57056948A JP 5694882 A JP5694882 A JP 5694882A JP H0449673 B2 JPH0449673 B2 JP H0449673B2
Authority
JP
Japan
Prior art keywords
rotation detection
circuit
detection circuit
drive pulse
rotor
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 - Lifetime
Application number
JP57056948A
Other languages
English (en)
Japanese (ja)
Other versions
JPS58173479A (ja
Inventor
Shuji Ootawa
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
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 JPS58173479A (ja) 1983-10-12
JPH0449673B2 true JPH0449673B2 (en:Method) 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 (en:Method)

Family Cites Families (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
JPS58173479A (ja) 1983-10-12

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