| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide vehicle-mounted communications equipment which is put to a practical use by utilizing a battery drive. <P>SOLUTION: ETC vehicle-mounted communications equipment 11 is composed in such a manner that when a detection switch 22 detects the insertion of an IC card 20 into a card I/F 19, power supply VDD is initiated by a battery 12 to operate a minimum electrical component necessary for starting communication processing. <P>COPYRIGHT: (C)2004,JPO |
