JPS55163484A - Time synchronizing method - Google Patents
Time synchronizing methodInfo
- Publication number
- JPS55163484A JPS55163484A JP7113679A JP7113679A JPS55163484A JP S55163484 A JPS55163484 A JP S55163484A JP 7113679 A JP7113679 A JP 7113679A JP 7113679 A JP7113679 A JP 7113679A JP S55163484 A JPS55163484 A JP S55163484A
- Authority
- JP
- Japan
- Prior art keywords
- pulse
- clock
- laser
- clocks
- optical fibers
- 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)
Abstract
PURPOSE: To synchronize times on clocks apart each other correctly by connecting a light source of pulse laser beam and a plural clock through optical fiber.
CONSTITUTION: When a laser pulse is incident to optical fibers 4, 5, 6 from a pulse laser oscillator 1 at a station arranged with a standard clock through a light pulse divider 3, the pulse reaches light pulse detectors 7a, 7b, 7c of terminal stations A, B, C at times of t+l1/vg, t+l2/vg and t+l3/vg (vg: group velocity of pulse propagation in optical fibers; l1Wl3: lengths of fibes 4W6). Clock reading devices 8a, 8b, 8c are actuated with the pulse as a trigger, times on synchronized clocks 9a, 9b, 9c are read, the synchronized clocks are calibrated according to a time lag of the laser pulse, thus synchronizing each clock.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7113679A JPS55163484A (en) | 1979-06-08 | 1979-06-08 | Time synchronizing method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7113679A JPS55163484A (en) | 1979-06-08 | 1979-06-08 | Time synchronizing method |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55163484A true JPS55163484A (en) | 1980-12-19 |
Family
ID=13451855
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7113679A Pending JPS55163484A (en) | 1979-06-08 | 1979-06-08 | Time synchronizing method |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55163484A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60160777A (en) * | 1984-01-31 | 1985-08-22 | Toyo Commun Equip Co Ltd | Time synchronism system |
-
1979
- 1979-06-08 JP JP7113679A patent/JPS55163484A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60160777A (en) * | 1984-01-31 | 1985-08-22 | Toyo Commun Equip Co Ltd | Time synchronism system |
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