JPS5520467A - Analogue electronic stop watch - Google Patents

Analogue electronic stop watch

Info

Publication number
JPS5520467A
JPS5520467A JP9376978A JP9376978A JPS5520467A JP S5520467 A JPS5520467 A JP S5520467A JP 9376978 A JP9376978 A JP 9376978A JP 9376978 A JP9376978 A JP 9376978A JP S5520467 A JPS5520467 A JP S5520467A
Authority
JP
Japan
Prior art keywords
circuit
time counting
counter
hand
hands
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
JP9376978A
Other languages
Japanese (ja)
Inventor
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 JP9376978A priority Critical patent/JPS5520467A/en
Publication of JPS5520467A publication Critical patent/JPS5520467A/en
Pending legal-status Critical Current

Links

Landscapes

  • Measurement Of Unknown Time Intervals (AREA)

Abstract

PURPOSE: To improve resolution with a small power consumption by stopping the hand of a micro unit below one second during time counting and operating it after time counting on a basis of storage contents of a counter for the micro unit which are counted by the counter.
CONSTITUTION: When time counting is started, hour, minute and second hands 7 are rotated through second motor driving circuit 4 according to elaspe, and simultaneously, hand position storage counter 22 counts the frequency division output of frequency divider circuit 2 in 1/10 second unit, 1/100 second unit, etc., by hand advancing control circuit 21 ahile being reset by the one-second signal generated from 100-notation counter 3 at every one second. simultaneously, application of driving signals from circuit 21 to 1/100 second motor driving circuit 8 is stopped, and 1/100 and 1/10 second hands 11 are stopped during time counting. After time counting, circuit 8 is driven through mechanism 13 and circuit 21 according to the storage counted value, and hands are driven by 1/100 second motor 9, etc. As a result, plural hand driving motors are not driven simultaneously, so that a time watch having a low power consumption and a high resolution corresponding to the oscillation frequency of a crystal oscillator circuit can be obtained.
COPYRIGHT: (C)1980,JPO&Japio
JP9376978A 1978-08-01 1978-08-01 Analogue electronic stop watch Pending JPS5520467A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9376978A JPS5520467A (en) 1978-08-01 1978-08-01 Analogue electronic stop watch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9376978A JPS5520467A (en) 1978-08-01 1978-08-01 Analogue electronic stop watch

Publications (1)

Publication Number Publication Date
JPS5520467A true JPS5520467A (en) 1980-02-13

Family

ID=14091625

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9376978A Pending JPS5520467A (en) 1978-08-01 1978-08-01 Analogue electronic stop watch

Country Status (1)

Country Link
JP (1) JPS5520467A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02161386A (en) * 1989-11-13 1990-06-21 Seiko Epson Corp Pointer display stop watch
JP2009204497A (en) * 2008-02-28 2009-09-10 Seiko Instruments Inc Chronograph timepiece

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02161386A (en) * 1989-11-13 1990-06-21 Seiko Epson Corp Pointer display stop watch
JP2009204497A (en) * 2008-02-28 2009-09-10 Seiko Instruments Inc Chronograph timepiece

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