| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a receiving device, used mainly to lock and unlock doors of an automobile, which is free of missetting, easy to manufacture, and inexpensive. <P>SOLUTION: The receiving device includes a receiving sensitivity switching means including a switch 11 connected to a demodulating means 2, and a plurality of fixed resistors 13A and 13B, where a control means 12 controls the switch 11 to store a radio wave signal from a transmission device 7 in a storage means 4. Consequently, the receiving sensitivity switching means lowers receiving sensitivity and a radio wave signal from another transmission device 8 at a distant place is not input to the control means 12, so that a wrong identification code is not stored in the storage means 4, so the receiving device 14 can be obtained which is free of missetting, easy to manufacture, and inexpensive. <P>COPYRIGHT: (C)2009,JPO&INPIT |
