COMMUNICATION DEVICE, COMMUNICATION SYSTEM, COMMUNICATION METHOD, AND COMMUNICATION PROGRAM.

摘要

The present invention is provided with: a reception means which receives metadata related to update data used for an update; a determination means which determines, on the basis of a description of the metadata, whether update data serving as a preliminary download for executing an update-data download prior to a time at which the update can begin is present; and an update processing means which, in cases when the determination means has determined that the update data serving as the preliminary download is present, downloads the update data.