| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To connect electronic equipment to a projector and to easily project it together with an operation screen corresponding to key operation without explaining a procedure of equipment key operation verbally or the main body by pointing. <P>SOLUTION: Scientific electronic calculator is connected to the projector. A key information/key location table for associating a color image (17e) of a keyboard of the scientific electronic calculator and key information (key code) of each key included in the keyboard with a key location (coordinate) on the keyboard image (17e) and showing them is transmitted to the projector, and the keyboard image (17e) is projected and displayed on a screen (37). Whenever key input operation is performed in the scientific electronic calculator, the input key information (34e) and renewal display screen data (17d) are transmitted to the projector, the input key location on the keyboard image (17e) is identified and displayed by a boxed mark Mk, key names (key characters) corresponding to the input key information (34e) are sequentially projected and displayed, and an updated calculator display screen (17d) is also projected and displayed. <P>COPYRIGHT: (C)2008,JPO&INPIT</p> |
