| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a DSRC on-vehicle device that can minimize the possibility of deviation from a communication area before an application is completed. <P>SOLUTION: The DSRC on-vehicle device sends and receives information to and from a roadside device 20 by radio and uses a CPU 4 to set for a security module 5 a security system that corresponds to the application executed. The module 5 has a plurality of security systems that correspond to a plurality of applications. When the device receives a predetermined application ID from the roadside device 20 as it enters the communication area, the CPU 4 switches the current security system set for the module 5 to another predetermined security system that corresponds to a predetermined application, if the current security system is different from the predetermined security system. When the execution of the predetermined application ends, the current security system is switched to the security system that meet preconditions. <P>COPYRIGHT: (C)2006,JPO&NCIPI</p> |
