| abstract |
(57) [Problem] To provide a technology of a car audio system for easily exchanging information with an external device. SOLUTION: Information such as various settings is written in a compact flash card 13 or stored by transferring it to a handheld personal computer 8 by infrared communication, so that even if the settings are changed, it can be easily restored to the original. Information can be easily introduced from outside. Also, like a handheld personal computer, software that realizes various functions can be updated or added, and user's personal information such as an address book used with such software can be exchanged with an external personal computer etc. . |