JPS573073A - Circuit for electronic watch - Google Patents

Circuit for electronic watch

Info

Publication number
JPS573073A
JPS573073A JP7739980A JP7739980A JPS573073A JP S573073 A JPS573073 A JP S573073A JP 7739980 A JP7739980 A JP 7739980A JP 7739980 A JP7739980 A JP 7739980A JP S573073 A JPS573073 A JP S573073A
Authority
JP
Japan
Prior art keywords
signals
signal
circuit
integers
bcd
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
JP7739980A
Other languages
Japanese (ja)
Other versions
JPS647350B2 (en
Inventor
Yoichi Wakai
Masuo Kitano
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 Epson Corp
Suwa Seikosha KK
Original Assignee
Seiko Epson Corp
Suwa Seikosha KK
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 Epson Corp, Suwa Seikosha KK filed Critical Seiko Epson Corp
Priority to JP7739980A priority Critical patent/JPS573073A/en
Publication of JPS573073A publication Critical patent/JPS573073A/en
Publication of JPS647350B2 publication Critical patent/JPS647350B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04G—ELECTRONIC TIME-PIECES
    • G04G3/00—Producing timing pulses
    • G04G3/02—Circuits for deriving low frequency timing pulses from pulses of higher frequency
    • G04G3/022—Circuits for deriving low frequency timing pulses from pulses of higher frequency the desired number of pulses per unit of time being obtained by adding to or substracting from a pulse train one or more pulses

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electric Clocks (AREA)

Abstract

PURPOSE:To approximately form the signal having the frequency value that cannot be obtained by the division of AC signals by integers by alternately counting the AC signals with two integers to obtain a 1-second signal and counting the AC signals by the above-described two integers. CONSTITUTION:A signal of 256Hz is inputted to 1/2 frequency dividing circuits 1-10, by which the BCD code signals S14-S17 resembling to 100Hz and the BCD code signals C18-S21 of 10Hz are formed. At this time, the 6 states of the BCD codes of 10Hz and the timings of the BCD codes of 100Hz are detected by an AND circuit 30, and the 256Hz signal is added by each one period so that the 10Hz signals S18-S21 are made to have accurate periods. If a 1-second signal is formed from these 10Hz signals, the 1-second signal is accurate.
JP7739980A 1980-06-09 1980-06-09 Circuit for electronic watch Granted JPS573073A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7739980A JPS573073A (en) 1980-06-09 1980-06-09 Circuit for electronic watch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7739980A JPS573073A (en) 1980-06-09 1980-06-09 Circuit for electronic watch

Publications (2)

Publication Number Publication Date
JPS573073A true JPS573073A (en) 1982-01-08
JPS647350B2 JPS647350B2 (en) 1989-02-08

Family

ID=13632810

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7739980A Granted JPS573073A (en) 1980-06-09 1980-06-09 Circuit for electronic watch

Country Status (1)

Country Link
JP (1) JPS573073A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007152998A (en) * 2005-12-01 2007-06-21 Mazda Motor Corp Lower vehicle body structure for vehicle

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007152998A (en) * 2005-12-01 2007-06-21 Mazda Motor Corp Lower vehicle body structure for vehicle

Also Published As

Publication number Publication date
JPS647350B2 (en) 1989-02-08

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