| 摘要 |
<p>PURPOSE:To display image information, stored in a storage means, page by page, by providing a device main body with a page-turning rotary operation part and making the direction and quantity of rotation of this operation part correspond to a page turning direction and a page turning quantity. CONSTITUTION:The device main body 21 is equipped with a CD-ROM drive 22 as an external storage device and an LCD(liquid crystal display device) 23 as a display device. Further, the device main body 21 is provided with a track ball 24, which is a page turning operation part and rotated in the right-left and up-down directions to change the display screen of the LCD 23, page by page. In concrete, the rotating direction of the track ball 24 is predetermined. The rotation in the right-left direction is effective for a laterally spread book image and the rotation in the up-down direction is effective for a longitudinally spread book image.</p> |
