| prov:value
| - For example, if the communication system according to the present invention 1 is applied to a vehicle, various functional devices such as a mobile telephone, a facsimile (FAX), a digital TV, a radio receiver, a navigation unit (NV), a DVD (Digital Video Disc or Digital Versatile Disc)-ROM drive, a CD (Compact Disc)-ROM drive, a DAT (Digital Audio Taperecorder), a MD (Mini Disc) drive, an audio amp
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