Patent ID: 7870591

Claim:
A data transmission system comprising: at least one first communication apparatus, and at least one second communication apparatus, wherein the first communication apparatus and the second communication apparatus are connected via a plurality of transmission paths, wherein the first communication apparatus includes a data transmission unit that sequentially transmits each data, forming a data stream, along any of the plurality of transmission paths together with accompanying additional information indicating a transmission sequence of the each data, with the additional information and the each data forming a packet of information, and the additional information at least including both a sequence number of the packet of information and a prospect sequence number formed by adding a byte-size of a data area in the each data, to which the additional information is to be added, to the sequence number, and wherein the second communication apparatus includes a sequence specification unit that specifies the transmission sequence of the each data based on the additional information included in the packet of information sequentially received from the first communication apparatus, via the plurality of transmission paths.