JPS5722582A - Watch incorporating eye strain testing function - Google Patents

Watch incorporating eye strain testing function

Info

Publication number
JPS5722582A
JPS5722582A JP9617780A JP9617780A JPS5722582A JP S5722582 A JPS5722582 A JP S5722582A JP 9617780 A JP9617780 A JP 9617780A JP 9617780 A JP9617780 A JP 9617780A JP S5722582 A JPS5722582 A JP S5722582A
Authority
JP
Japan
Prior art keywords
seconds
interval
eye strain
output
different time
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
JP9617780A
Other languages
Japanese (ja)
Inventor
Tetsuro Tanaka
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.)
Oki Electric Industry Co Ltd
Original Assignee
Oki Electric Industry 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 Oki Electric Industry Co Ltd filed Critical Oki Electric Industry Co Ltd
Priority to JP9617780A priority Critical patent/JPS5722582A/en
Publication of JPS5722582A publication Critical patent/JPS5722582A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04G—ELECTRONIC TIME-PIECES
    • G04G9/00—Visual time or date indication means
    • G04G9/0064—Visual time or date indication means in which functions not related to time can be displayed

Abstract

PURPOSE:To obtain a watch capable of testing eye strain by controlling the lighting and the extinguishing of indication so tht different time is indicated at a specified interval of seconds through a shift register or the like. CONSTITUTION:When a switch 7 is closed, the output of Q1... of a shift register 3 which is driven by a 1/2Hz signal from a division circuit 1 turns to a hign level at an interval of two seconds and is applied to a corresponding OR gates 8...A specified divided output of the division circuit 1 is applied to the gates 8 and the output of an AND gate 16 becomes so high in the level during a different time at an interval of two seconds as to control a decoder 17 receiving the output of the register 3. This permits an indication cirlcuit to perform lighting during the different time at the interval of two seconds through a driving circuit 19. Thus, the lighting and extinguishing time can be changed at the interval of two seconds thereby enabling the inspection of eye strain.
JP9617780A 1980-07-16 1980-07-16 Watch incorporating eye strain testing function Pending JPS5722582A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9617780A JPS5722582A (en) 1980-07-16 1980-07-16 Watch incorporating eye strain testing function

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9617780A JPS5722582A (en) 1980-07-16 1980-07-16 Watch incorporating eye strain testing function

Publications (1)

Publication Number Publication Date
JPS5722582A true JPS5722582A (en) 1982-02-05

Family

ID=14158037

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9617780A Pending JPS5722582A (en) 1980-07-16 1980-07-16 Watch incorporating eye strain testing function

Country Status (1)

Country Link
JP (1) JPS5722582A (en)

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