| 摘要 |
PROBLEM TO BE SOLVED: To solve the problem, wherein the high-frequency noise radiated from an opening part after the reflection by the inner wall of a metal case, as well as the high-frequency noise radiated from a high-frequency signal generation part and directly radiated to the outside of the electronic apparatus through the opening part, cannot be sufficiently reduced by a conventional simple method, in the box-like metal case for the electronic apparatus having the opening part for inserting/ejecting a disk medium and the high-frequency signal generation part to be the generation source of the high-frequency noise. SOLUTION: By providing at the opening part a conductive member which is moved along a surface parallel to that of the opening part together with the insertion/ejection operation of a medium tray and which electrically divides the opening part into at least two or more regions during the period of time other than that for inserting/ejecting the medium tray, the high-frequency noise in the frequency band where the problem in the emission efficiency of an antenna formed by the opening part is reduced. COPYRIGHT: (C)2006,JPO&NCIPI
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