JPS5479680A - Automatic correction system of portable electronic watch - Google Patents

Automatic correction system of portable electronic watch

Info

Publication number
JPS5479680A
JPS5479680A JP14672077A JP14672077A JPS5479680A JP S5479680 A JPS5479680 A JP S5479680A JP 14672077 A JP14672077 A JP 14672077A JP 14672077 A JP14672077 A JP 14672077A JP S5479680 A JPS5479680 A JP S5479680A
Authority
JP
Japan
Prior art keywords
watch
pulses
time
counter
difference
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
JP14672077A
Other languages
Japanese (ja)
Inventor
Junpei Nakamura
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 JP14672077A priority Critical patent/JPS5479680A/en
Publication of JPS5479680A publication Critical patent/JPS5479680A/en
Pending legal-status Critical Current

Links

Landscapes

  • Electric Clocks (AREA)
  • Electromechanical Clocks (AREA)
  • Control Of Stepping Motors (AREA)

Abstract

PURPOSE:To readily and surely correct the time of the portable watch side by transmitting standard time signal to the portable watch side through transmission from the master watch and detecting the difference from the own time. CONSTITUTION:On the portable watch side, the radio waves being sent from the master watch side are received with a receiving antenna 6 and the time signal is drawn out by a receiving part 7 and is then stored in a register part 8. A watch circuit part A is so formed as to generate second pulses by dividing down the output from the transmitting part with a frequency dividing part 11 and send the second pulses to a step motor and second counter 13 with analog type and the second pulses to a second counter 13 with digital type. The difference between the register part 8 and counter 13 is detected in a difference detecting part 9 by an instruction by the start or end signal. In a control part 10, controlling is so made as to stop inputting of the second pulses by closing the gate 12 in case the watch is fast and send the rapid feed pulses to the gate 12 when it is slow, whereby the time correction of the watch circuit part A may be performed.
JP14672077A 1977-12-07 1977-12-07 Automatic correction system of portable electronic watch Pending JPS5479680A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14672077A JPS5479680A (en) 1977-12-07 1977-12-07 Automatic correction system of portable electronic watch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14672077A JPS5479680A (en) 1977-12-07 1977-12-07 Automatic correction system of portable electronic watch

Publications (1)

Publication Number Publication Date
JPS5479680A true JPS5479680A (en) 1979-06-25

Family

ID=15414016

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14672077A Pending JPS5479680A (en) 1977-12-07 1977-12-07 Automatic correction system of portable electronic watch

Country Status (1)

Country Link
JP (1) JPS5479680A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7027363B2 (en) 2002-06-12 2006-04-11 Seiko Epson Corporation Time measurement system and method of controlling the same

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7027363B2 (en) 2002-06-12 2006-04-11 Seiko Epson Corporation Time measurement system and method of controlling the same

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