Communication control unit and information terminal unit equipped with the same

摘要

Communication control sections prepared in accordance with plural existing protocols and the same number of virtual communication control sections are provided in advance. A port driver is interposed between the communication control section and the virtual communication control section in order to correlate a specific communication control section with a specific virtual communication control section in a one-to-one manner. An application uses the virtual communication control section that corresponds to the specified protocol. The virtual communication control section and the communication control section send/receive data to/from each other via the port driver. The port driver establishes a state of connection between the virtual communication control section that issues a connection request with the communication control section and the corresponding communication control section among plural existing virtual communication control sections and plural existing communication control sections based on the relationship of correspondence determined in advance.