Detection device and detection method

A detection device comprising:

• a signal output circuit configured to output a first digital signal consisting of one bit representing a waveform of a predetermined pattern or a signal based on the first digital signal to a transmission line as a measurement signal;
• a signal reception circuit configured to receive a response signal including a signal reflecting the measurement signal from the transmission line and convert the response signal into a second digital signal consisting of one bit;
• an operation circuit configured to perform a logical operation of the second digital signal converted by the signal reception circuit and a third digital signal consisting of one bit based on the predetermined pattern;
• and
• a detection circuit configured to detect an abnormality of the transmission line, based on an operation result obtained by the operation circuit.