| 摘要 |
<p>Provided in the present invention is a system for human-computer interaction wherein a touch control device is separate from a graphical interface display screen, said system having projection point coordinate indication of detected proximity. The touch control device detects projection point coordinates when an object approaches a touch panel of said device, and detects touch point coordinates when an object comes into contact with said touch panel; the device also transmits said two types of coordinate data, by means of wired or wireless means, to a graphical interface control module. The graphical interface control module draws a graphical interface, and on the basis of the projection point coordinate data received, draws indication points at corresponding locations on the graphical interface, thereby, by direct visual means, indicating and continuing to track the projection point coordinates of an object close to the touch panel. When an object makes contact with the touch panel, the graphical interface control module, on the basis of the coordinates of and the movement of the touch points, executes corresponding touch graphical interface interactive operations; said control module also simultaneously draws, on the graphical interface, the indication points of the touch points.</p> |
