| 摘要 |
A slave node (104) comprises: N clock replay units (105-107) which carry out a communication in correspondence with each of N master nodes (101-103), compute a propagation delay between each of the master nodes (101-103) and the slave node (104), and carry out a replay of the clocks of each of the master nodes (101-103); a clock comparison unit (108) which carries out isolated comparisons of the clocks of each of the master nodes (101-103) which the N clock replay nodes (105-107) have respectively replayed with a reference clock which the slave node (104) retains; and a reference clock determination unit (109) which carries out, upon the respective comparision results which the clock comparison unit (108) has computed, a weighting on the basis of the propagation delays, computes respective correction values thereof, and executes a statistical process using each of the correction values, thereby determining the reference clock of the slave node (104). It is thus possible to inexpensively improve precision and reliability of clock synchronization of the slave node. |
