There is provided an information processing device, including a preamble detection portion, a sync detection portion, a storage portion, a storage control portion, a delay time imparting portion, a bias computation portion, a half sampling portion, an adaptive equalization portion an equalization performance determination portion that compares equalization errors for each one of the sync portion candidates for which the training equalization has been performed by the adaptive equalization portion, and that sets the candidate position with the least error, and a binary determination portion that decodes the Manchester code into NRZ code by subjecting to binary determination the received signal that has been adaptively equalized by the adaptive equalization portion. The storage control portion reads the received signal from the storage portion based on information about the candidate position with the least error that has been set by the equalization performance determination portion.