| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a portable information device which allows a user to easily conduct various control operations such as scrolling of a display screen, enlargement, shrinkage, and adjustment of sound volume. <P>SOLUTION: In order to solve the above problem, a strain detection element 26 is disposed in a housing 22 so as to mechanically couple to a rear surface 22d of the housing 22. Compression loads are applied to the rear surface 22d of the housing and an area between first and second side surfaces 22b, 22c, thereby controlling each function of a portable information device 21 according to electric signals occurring from the strain detection element 26. <P>COPYRIGHT: (C)2013,JPO&INPIT |
