| 摘要 |
PROBLEM TO BE SOLVED: To provide a device for releasing lines of the DAMA satellite communication system, which allows the efficient use of satellite lines even if one of slave stations is powered off. SOLUTION: In slave stations 30-1 and 30-2, a determining means 34 monitors the communication status of the slave stations based on an output of a received data analyzing means 33 and, when the power-off is requested by a switch 39, in communication between the slave stations, directs a procedure for notifying the end of communication to the other slave station for a transmission data generating means 35 the acknowledgement of and notifying the end of communication to a center station 20, and directs a power-off to a power supplying means 38 after the procedure of the end of communication has been finished. |
