| 摘要 |
PROBLEM TO BE SOLVED: To facilitate communication among in-vehicle apparatuses, and among the in-vehicle apparatuses and the outside. SOLUTION: The in-vehicle apparatuses are connected by an IEEE1394 serial bus 34, and a radio transmission and reception circuit 14 is connected through an IEEE1394 serial bus 20 and a radio/IEEE1394 conversion circuit 18. A security circuit 16 to manage the authentication of an apparatus ID and a password or the like is connected to the radio transmission and reception circuit 14. |
