| 摘要 |
<p>The invention relates to a position detection system for a detection area, preferably a whiteboard (10), said system copmrising means for detecting at least one position (11, 12) of at least one marker (13) operating within said detection area, said system comprising means for storing a sequence of said detected positions in at least one memory arrangement, said memory arrangement comprising interfacing means (181) for exporting the stored positions or at least some of the positions. According to the invention, the stores sequence may be displayed on a screen reflecting the picture drawn on the board. The stored data may be displayed sequentially, i.e. illustrating the 'file history' in the sense that the displayed picture is established in the same order as when the components of the drawing were made on the board. Evidently, according to a preferred embodiment of the invention, the data may also be presented as slides, each slide representing the complete screenshot of a drawing made on the board.</p> |
