JPS55101075A - Electronic watch with reset-to-zero unit - Google Patents

Electronic watch with reset-to-zero unit

Info

Publication number
JPS55101075A
JPS55101075A JP903679A JP903679A JPS55101075A JP S55101075 A JPS55101075 A JP S55101075A JP 903679 A JP903679 A JP 903679A JP 903679 A JP903679 A JP 903679A JP S55101075 A JPS55101075 A JP S55101075A
Authority
JP
Japan
Prior art keywords
time
reset
seconds
zero
minute counter
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
JP903679A
Other languages
Japanese (ja)
Inventor
Hideji Suzuki
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.)
Citizen Watch Co Ltd
Original Assignee
Citizen Watch Co Ltd
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 Citizen Watch Co Ltd filed Critical Citizen Watch Co Ltd
Priority to JP903679A priority Critical patent/JPS55101075A/en
Publication of JPS55101075A publication Critical patent/JPS55101075A/en
Pending legal-status Critical Current

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Abstract

PURPOSE: To make accurate time corrections of an electronic watch with a 30-second distributing reset-to-zero unit, by making it possible to correct a minute counter by unit time only during a constant period of time even when reset-to-zero operation would be done in a state of an error of more than 30 seconds.
CONSTITUTION: In case of a difference of -30W+29 seconds from a correct time, closing reset-to-zero switch SW resets divider circuit 2 and second counter 3 and when the time is late, carry pulse PC is applied to minute counter 3. At the time of an advance within a range of 30W59 seconds, operating the reset-to-zero twice disallows carry pulse PC after one minute to pass through AND1 by output Q3 of shift register 8 and minute counter 3 continues its current state for two minutes and is initialized by reset pulse pr after the operation time of timer 11. At the time of delay of 31W59 seconds, operating switch SW three times differentiate output Q4 of shift register 8 to apply it to minute counter 5 as a carry signal.
COPYRIGHT: (C)1980,JPO&Japio
JP903679A 1979-01-29 1979-01-29 Electronic watch with reset-to-zero unit Pending JPS55101075A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP903679A JPS55101075A (en) 1979-01-29 1979-01-29 Electronic watch with reset-to-zero unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP903679A JPS55101075A (en) 1979-01-29 1979-01-29 Electronic watch with reset-to-zero unit

Publications (1)

Publication Number Publication Date
JPS55101075A true JPS55101075A (en) 1980-08-01

Family

ID=11709416

Family Applications (1)

Application Number Title Priority Date Filing Date
JP903679A Pending JPS55101075A (en) 1979-01-29 1979-01-29 Electronic watch with reset-to-zero unit

Country Status (1)

Country Link
JP (1) JPS55101075A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01107993U (en) * 1988-01-13 1989-07-20

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01107993U (en) * 1988-01-13 1989-07-20

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