Information processing apparatus and signal determination method

An information processing apparatus, comprising:

• a signal receiving unit that receives a signal encoded in such a way that a signal containing a first bit and a second bit value that are mutually different, wherein the first bit value is represented by a plurality of first amplitude values, and the second bit value is represented by a second amplitude value that is different from the first amplitude values, a same encoded signal amplitude value does not occur successively, and polarity of the encoded signal amplitude value is reversed in each period;
• a conversion processing unit that performs conversion processing to add a delayed signal that is delayed by delaying the signal received by the signal receiving unit by one period of the received signal;
• an inversion processing unit that performs inverse processing of the conversion processing on the signal output from the conversion processing unit;
• and
• an input data decoding unit that decodes an input data by determining the first and second bit values based on the amplitude value of the signal output from the inversion processing unit.