Patent ID: 8607103

Claim:
A transmission and reception device comprising: a transmission device configured to transmit data; a reception device configured to receive the data; and a system bus including a plurality of connection lines connecting the transmission device to the reception device, wherein the transmission device includes: a test pattern generation unit that generates a test pattern including a plurality of bits; and a transmission switching selection unit that divides the plurality of connection lines into a plurality of groups, and determines corresponding connection lines among the plurality of groups, and that allocates a plurality of bits included in the test pattern to the corresponding connection lines among the plurality of groups, and outputs the test pattern to the plurality of connection lines based on the correspondence between the test pattern and the connection line; and the reception device includes: a reception switching selection unit that receives a plurality of test patterns each of which is transmitted through one of the plurality of connection lines based on the correspondence between the test pattern and the connection line; and an error detection unit that receives the plurality of the test patterns from the reception switching selection unit, and compares each received test patterns with one another to determine whether or not each bits included in the received test patterns match each other, and that generates erroneous connection line information indicating an erroneous connection line as a connection line in which an error has occurred in the plurality of connection lines based on a result of the comparison.