JPS5547480A - Electronic watch having temperature measuring unit - Google Patents

Electronic watch having temperature measuring unit

Info

Publication number
JPS5547480A
JPS5547480A JP12069678A JP12069678A JPS5547480A JP S5547480 A JPS5547480 A JP S5547480A JP 12069678 A JP12069678 A JP 12069678A JP 12069678 A JP12069678 A JP 12069678A JP S5547480 A JPS5547480 A JP S5547480A
Authority
JP
Japan
Prior art keywords
converter
temperature
measuring unit
signal
electronic 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.)
Pending
Application number
JP12069678A
Other languages
Japanese (ja)
Inventor
Makoto Yoshida
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 JP12069678A priority Critical patent/JPS5547480A/en
Publication of JPS5547480A publication Critical patent/JPS5547480A/en
Pending legal-status Critical Current

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  • Electric Clocks (AREA)

Abstract

PURPOSE:To eliminate an error of measuring temperature due to power supply voltage variations by a temperature measuring unit of an electronic watch and enhance the accuracy of the watch by desplacing time of applying heavy load for driving a step motor or the like and timing of measuring the temperature. CONSTITUTION:A signal F divided in frequency by a frequency divider 3 operates a step motor M, inverted by a timing generator 11, and conducts a transistor 13 to thereby flow a current through a temperature sensing element 5. Simultaneously, the signal starts operating of a DA converter 10 and applies a stepwise signal C to an inverter 9 together with the output of the element 5. When the inverter 9 reaches a threshold voltage, it stops the converter 10 to thus measure the temperature by the operating time of the converter 10. The output signals 10B-10E of the converter 10 switch the capacitors CA-CD to regulate the oscillating frequency.
JP12069678A 1978-09-30 1978-09-30 Electronic watch having temperature measuring unit Pending JPS5547480A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12069678A JPS5547480A (en) 1978-09-30 1978-09-30 Electronic watch having temperature measuring unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12069678A JPS5547480A (en) 1978-09-30 1978-09-30 Electronic watch having temperature measuring unit

Publications (1)

Publication Number Publication Date
JPS5547480A true JPS5547480A (en) 1980-04-03

Family

ID=14792704

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12069678A Pending JPS5547480A (en) 1978-09-30 1978-09-30 Electronic watch having temperature measuring unit

Country Status (1)

Country Link
JP (1) JPS5547480A (en)

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