JPS562581A - Electronic watch - Google Patents

Electronic watch

Info

Publication number
JPS562581A
JPS562581A JP7839179A JP7839179A JPS562581A JP S562581 A JPS562581 A JP S562581A JP 7839179 A JP7839179 A JP 7839179A JP 7839179 A JP7839179 A JP 7839179A JP S562581 A JPS562581 A JP S562581A
Authority
JP
Japan
Prior art keywords
output
magnetic field
watch
200msec
seconds
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.)
Pending
Application number
JP7839179A
Other languages
Japanese (ja)
Inventor
Shuji Otawa
Jun Ueda
Masaharu Shida
Akira Torisawa
Masaaki Bandai
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 JP7839179A priority Critical patent/JPS562581A/en
Publication of JPS562581A publication Critical patent/JPS562581A/en
Pending 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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromechanical Clocks (AREA)
  • Control Of Stepping Motors (AREA)

Abstract

PURPOSE:To give an alarm to a user in terms of an in-use place by detecting a watch being placed in an AC magnetic field of a constant level or more and then by providing different display from normal one. CONSTITUTION:Once the watch is placed in an AC magnetic field, an AC magnetic-field detection signal is output to terminal 141 of a control part to set RS-FF150, and consequently outputs Q and are held at ''H'' and ''L'' to output the most tolerant pulse PD3 against magnetism in the AC magnetic field to AND.OR155, so that rotation detection PD1 and PD2 will be inhibited from operating. At the same time, the output is masked by terminal 220PM2 to output the output of AND.OR228 200msec later just one second, and this repetition is carried out at intervals of just two seconds. This output pulse turns the rotor of a step motor twice within about 200msec and then this operation is repeated at intervals of just two seconds. Through the operation, the advance of the hands differing from normal one-second advance is made, so that it will be made possible to let an user know that his or her watch is placed in an AC magnetic field.
JP7839179A 1979-06-21 1979-06-21 Electronic watch Pending JPS562581A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7839179A JPS562581A (en) 1979-06-21 1979-06-21 Electronic watch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7839179A JPS562581A (en) 1979-06-21 1979-06-21 Electronic watch

Publications (1)

Publication Number Publication Date
JPS562581A true JPS562581A (en) 1981-01-12

Family

ID=13660707

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7839179A Pending JPS562581A (en) 1979-06-21 1979-06-21 Electronic watch

Country Status (1)

Country Link
JP (1) JPS562581A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57163946U (en) * 1981-04-08 1982-10-15
JPS57163947U (en) * 1981-04-08 1982-10-15

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57163946U (en) * 1981-04-08 1982-10-15
JPS57163947U (en) * 1981-04-08 1982-10-15
JPS63933Y2 (en) * 1981-04-08 1988-01-11
JPS63934Y2 (en) * 1981-04-08 1988-01-11

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