JPS5548681A - Measuring device for electronic watch - Google Patents

Measuring device for electronic watch

Info

Publication number
JPS5548681A
JPS5548681A JP12294678A JP12294678A JPS5548681A JP S5548681 A JPS5548681 A JP S5548681A JP 12294678 A JP12294678 A JP 12294678A JP 12294678 A JP12294678 A JP 12294678A JP S5548681 A JPS5548681 A JP S5548681A
Authority
JP
Japan
Prior art keywords
rotation
motor
circuit
driving
watch
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
JP12294678A
Other languages
Japanese (ja)
Other versions
JPS6128112B2 (en
Inventor
Jun Ueda
Akira Torisawa
Masaharu Shida
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 JP12294678A priority Critical patent/JPS5548681A/en
Publication of JPS5548681A publication Critical patent/JPS5548681A/en
Publication of JPS6128112B2 publication Critical patent/JPS6128112B2/ja
Granted legal-status Critical Current

Links

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  • Electromechanical Clocks (AREA)

Abstract

PURPOSE: To secure a steady and easy detection for the rotation and non-rotation of the step motor at the measuring time of the watch rough torque by setting both the highter and lower limits of the driving pulse duration for the step motor.
CONSTITUTION: When measuring the ordinary driving torque of the watch, the driving pulse which is generated once every second and limited its duration to the lowest level by time reference oscillator circuit 304 and control circuit 300, drives step motor 302 via motor driving circuit 301. With rotation of motor 302, the specified induced voltage is obtained at the driving coil of motor 302 due to vibrations of the rotor caused by damping to be detected through rotation detection circuit 303. Thus the rotation and non-rotation are displayed for the motor at display unit 306. And in the case of non-rotation of the motor, the driving pulse duration to be applied to circuit 301 via operation circuit 305 is switched to the set upper limit level. Thus the rotation and non-rotation of the motor can be detected in a steady and easy way. As a result, an easy and assured measurement is possible for the watch rough torque due to the driving pulse duration.
COPYRIGHT: (C)1980,JPO&Japio
JP12294678A 1978-10-04 1978-10-04 Measuring device for electronic watch Granted JPS5548681A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12294678A JPS5548681A (en) 1978-10-04 1978-10-04 Measuring device for electronic watch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12294678A JPS5548681A (en) 1978-10-04 1978-10-04 Measuring device for electronic watch

Publications (2)

Publication Number Publication Date
JPS5548681A true JPS5548681A (en) 1980-04-07
JPS6128112B2 JPS6128112B2 (en) 1986-06-28

Family

ID=14848521

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12294678A Granted JPS5548681A (en) 1978-10-04 1978-10-04 Measuring device for electronic watch

Country Status (1)

Country Link
JP (1) JPS5548681A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS518597A (en) * 1974-07-10 1976-01-23 Taisei Denshi Kk TAINETSUSEIKINZOKUHAKUMAKUTEIKOTAITANSHINO SEIZOHOHO
JPS62172701A (en) * 1986-01-27 1987-07-29 スタツクス工業株式会社 Resistor for audio equipment
USRE38197E1 (en) 1988-06-17 2003-07-22 Seiko Epson Corporation Multifunction electronic analog timepiece

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62219335A (en) * 1986-03-20 1987-09-26 Ricoh Co Ltd Tracking signal detecting method

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS518597A (en) * 1974-07-10 1976-01-23 Taisei Denshi Kk TAINETSUSEIKINZOKUHAKUMAKUTEIKOTAITANSHINO SEIZOHOHO
JPS5746202B2 (en) * 1974-07-10 1982-10-01
JPS62172701A (en) * 1986-01-27 1987-07-29 スタツクス工業株式会社 Resistor for audio equipment
USRE38197E1 (en) 1988-06-17 2003-07-22 Seiko Epson Corporation Multifunction electronic analog timepiece

Also Published As

Publication number Publication date
JPS6128112B2 (en) 1986-06-28

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