公开(公告)号：SG178821A1

公开(公告)日：2012-05-30

申请号：SG2011043387

申请日：2010-09-21

Applicant: SKY PERFECT JSAT CORP

Inventor： TOYOGUCHI SATOSHI ,  YAGIHASHI HIROYUKI

IPC: G04G5/00 ,  G04R20/00

Abstract: SATELLITE TIME DISTRIBUTION SYSTEM I_A satellite time distribution system for distributing time information to receiving apparatuses via a geostationary satellite, includes: a reference clock which generates time to be a reference; transmitting means for generating time information by adding an ID to a time obtained from the reference clock, encrypting the time information and transmitting the encrypted time information via the geostationary satellite; receiving means for receiving the time information returned from the geostationary satellite; delay calculating means for measuring a reception time of the time information based on a time of the reference clock, and determining a difference between the time included in the time information and the measured reception time as delay time; and delay time information transmitting means for generating delay time information by adding, to the delay time, a same ID as the ID included in the time information, and transmitting the delay time information to the receiving apparatuses.FIGURE 1.