Patent attributes
Redundant transmitters send the same sequence numbers without matching the sequence numbers. The transmission system includes a PTP grand master, a first and second transmitters configured to synchronize a time with the PTP grand master according to PTP and receive video signals distributed from one video signal, and a receiver connected to the first and second transmitters over an IP-network, the first transmitter and the second transmitter respectively divide the video signals into a plurality of IP-packets, calculate an initial value for RTP sequence numbers based on PTP timestamps in accordance with the synchronized time according to PTP, set the RTP sequence numbers sequential from the initial value to a RTP sequence fields in the plurality of IP-packets respectively, and send the IP-packets to the receiver via a first and second transmission paths according to RTP.