Patent ID: 8564815

Claim:
A transmission device comprising: a detection unit that detects, in a transmission element group in which a plurality of transmission elements are consecutive and in which the transmission elements contain signals that are to be transmitted and the transmission elements are provided as required with non-signal intermission periods, whether there is a plurality of consecutive transmission elements in which an absolute value of a difference in length between the transmission elements is not more than a pre-specified value; a processing unit that, if the plurality of consecutive transmission elements is detected by the detection unit and the intermission periods are not provided in the detected transmission elements, performs processing that inserts at least one of an irregular signal and an intermission period into at least one transmission element of the detected transmission elements such that the absolute value of the difference in length between the detected transmission elements is larger than the pre-specified value, and, if the plurality of consecutive transmission elements is detected by the detection unit and the intermission periods are provided in the detected transmission elements, performs at least one of processing that changes a length of the intermission period provided in at least one transmission element of the detected transmission elements and processing that inserts an irregular signal into at least one transmission element of the detected transmission elements such that the absolute value of the difference in length between the detected transmission elements is larger than the pre-specified value; and a transmission unit that transmits the transmission elements processed by the processing unit in accordance with an order of the transmission element group.