TIME-GIVING OBSERVATION SYSTEM AND TIME-GIVING OBSERVATION METHOD

PROBLEM TO BE SOLVED: To send time information to a remote place via a communication cable with high accuracy. SOLUTION: An observation system includes a superordinate station storing the time information, in a clock synchronization frame and detecting as delays the time lag between a time indicated...

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Hauptverfasser:	SHIMAMORI TETSUYA, IIDA NAOHISA, SASAKI YASUHIRO, ARAKI EIICHIRO, KAWAGUCHI KATSUYOSHI, YONEZAKI YOSHITAKA
Format:	Patent
Sprache:	eng
Schlagworte:	ELECTROMECHANICAL CLOCKS OR WATCHES ELECTRONIC TIME-PIECES HOROLOGY PHYSICS
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To send time information to a remote place via a communication cable with high accuracy. SOLUTION: An observation system includes a superordinate station storing the time information, in a clock synchronization frame and detecting as delays the time lag between a time indicated by the time information and a time indicated by the time information to be stored in the clock synchronization frame, and a time lag between the clock synchronization frame storing the time information and the clock synchronization frame doubled back via a communication channel; a subordinate station receiving the clock synchronization frame via the communication channel and associating incoming time information with the data obtained by observing an event; and a correction means for correcting the time information associated with the data obtained by observing the event, based on the detected delays. COPYRIGHT: (C)2011,JPO&INPIT