JPS5479680A - Automatic correction system of portable electronic watch - Google Patents
Automatic correction system of portable electronic watchInfo
- 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
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.
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)
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 |
-
1977
- 1977-12-07 JP JP14672077A patent/JPS5479680A/en active Pending
Cited By (1)
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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