Patent ID: 8397095
Filing Date: 2013-03-12
Classification: G04R,H04J,H04L

Abstract:
1. A method of synchronizing a time of day (TOD) of a terminal in a convergent network, the method comprising: registering and storing identification information and TOD information of a terminal; obtaining a first path delay time caused by a TOD synchronization message transmission path between the terminal and a TOD synchronization adjusting and storage unit that adjusts TOD synchronization of the terminal, and registers and stores the identification information and the TOD information; obtaining a second path delay time caused by a TOD synchronization message transmission path between the TOD synchronization adjusting and storage unit and a time server providing a standard time; obtaining delay compensated TOD information by applying the first path delay time and the second path delay time to the standard time; converting the delay compensated TOD information to a form of TOD information of the terminal; and transmitting the converted delay compensated TOD information to the terminal, wherein when a plurality of terminals are connected to the TOD synchronization adjusting and storage unit, selecting one of the plurality of terminals, and multicasting and transmitting the delay compensated TOD information to the plurality of terminals.