Service providing system, service providing method via the communication means, and service mediation device, and program providing medium

摘要

PROBLEM TO BE SOLVED: To realize a service providing system by which maintenance and control via an external network concerning an electronic unit without having a communication part and a cipher processing part are performed by keeping a communication secret.;SOLUTION: A controlled unit (low-order unit) being the object of maintenance or control, etc., is constituted to transfer data to a high-order unit via a local network or via an information recording medium such as a memory stick. The high-order unit is provided with a communication means to transfer data received from a service center to the controlled unit (low-order unit) via the local network or the information recording medium. In the high-order unit, the safety of communication data is guaranteed since a communication processing is performed with the service center after enciphering data so that important information such as control information or individual information required for providing control information is prevented from being leaked.;COPYRIGHT: (C)2001,JPO