| 摘要 |
<P>PROBLEM TO BE SOLVED: To allow one receiver in a device body to receive two or more data signals of different communication speeds transmitted at the same frequency from a plurality of peripheral devices. <P>SOLUTION: A receiver 3 of a device body 2 is divided into a first receiving unit 3A1 and a second receiving unit 3A2, and these units are processed at the same signal processing unit 3B. Here, if the pass bandwidth of an IF filter 3b1 is made broader, a data signal for a high-speed mode can be received by the first receiving unit 3A1. Also, if the pass bandwidth of an IF filter 3b2 is made narrower, a data signal for a low-speed mode can be received with a higher S/N ratio by the second receiving unit 3A2. <P>COPYRIGHT: (C)2003,JPO |
