| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide an information processor for stably communicating with external equipment connected by using a connector exposed to the outside of a main body. <P>SOLUTION: The intermediate layer of a circuit board 10 is a beta-ground layer almost on whose whole face a ground pattern is formed, and signal lines D+ and D- connecting a USB connector 2 and a DSP 3 mounted on the surface layer of the circuit board 10 are formed. The terminal of the USB connector 2 and the terminal of the DSB3 mounted on the surface layer are electrically connected to the signal lines D+ and D- formed in the intermediate layer by a through-hole. Therefore, it is possible to increase the shield effects of the signal lines D+ and D-, and to suppress the frequency of the generation of any communication failure between the information processor and external equipment connected to the USB connector 3 due to the application of static electricity. <P>COPYRIGHT: (C)2008,JPO&INPIT</p> |
