Patent ID: 8321736

Claim:
A transmission system comprising: a transmission device that transmits information; and a reception device that receives information sent from the transmission device; wherein the transmission device comprises: a re-transmitting unit that re-transmits information associated with a re-transmission request sent from the reception device as re-transmission information to the reception device when the re-transmission request is detected; a test pattern registering unit that stores the re-transmission information as a test pattern; and a test pattern transmitting unit that transmits the test pattern stored in the test pattern registering unit to the reception device in accordance with a retraining signal, and the reception device comprises: an error determining unit that determines whether an error is detected in the information received from the transmission device or not; a re-transmission requesting unit that requests the transmission device to re-transmit information in which an error is detected; a collation pattern registering unit that stores the re-transmission information received from the transmission device as a collation pattern; a pattern collating unit that reads out the collation pattern corresponding to the test pattern received from the test pattern transmitting unit from the collation pattern registering unit when the reception device received the test pattern, and collates the test pattern and the collation pattern; and a parameter adjusting and setting unit that adjusts and sets a parameter of the reception device on the basis of a collation result of the pattern collating unit.