| 摘要 |
<p>A GUI device is provided with a function detection circuit which detects whether states of a plurality of functions are effective states or ineffective states, a control unit which changes the display style of an icon corresponding to a function or a function group on the basis of the detection results of the function detection circuit, an OSD creation circuit which creates an icon corresponding to the function or the function group in accordance with instructions from the control unit, and a display unit which displays the icon created by the OSD creation circuit, wherein, when the function is effective, the control unit operates so that an icon having an one-on-one correspondence with each function is displayed, and when the function is ineffective, the control unit operates so that only one icon representing a function group is displayed in the display style representing the ineffective state.</p> |
