| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a track ball device disposed as an input operation part for various kinds of electronic devices, allowing recognition of an operation state without closely observing a display part. <P>SOLUTION: A spherical body 31 that is an operation member is rotatably supported by a support member 32, one end of the support member 32 is rotatably held by a cover member 41, and a vibration generation part 44 is fixed to the other end. By transmitting vibration obtained from the vibration generation part 44 to the spherical body 31, an operator can recognize conditions inside the display part 52 from a finger or the like operating the spherical body 31 without closely observing the display part 52. <P>COPYRIGHT: (C)2004,JPO</p> |
