Abstract: A communication module includes: a transmitter and a receiver each disposed at an approximate center of a connection surface, the transmitter transmitting and the receiver receiving data by a data communication scheme with which the transmitter and the receiver are compatible; and a first electrode and a plurality of second electrodes, the first electrode having a polarity that is different from a polarity of the plurality of second electrodes, the first electrode and the plurality of second electrodes being disposed in an arrangement that is N-fold symmetric (where N is a natural number of 3 or more) in an outer periphery of the transmitter and the receiver, the transmitter and the receiver being disposed on the connection surface.

Abstract: A software update system includes: a product running on software; a server for providing update software of the product; and a software update management apparatus for managing software updating of the product by connecting the server and the product, wherein the server manages software update information of the product, stores the update software, and performs data communication with the software update management apparatus; the product stores the software and product information on the product, performs data communication with the software update management apparatus and updates the software; and the software update management apparatus acquires the product information from the product and update information on the software of the product from the server in accordance with the product information, downloads the update software of the product in accordance with the update information, and transmits the downloaded software to the product to update the software.