| 摘要 |
A display device ( 10 ) for diagramming a play includes a housing ( 12 ) having a handle ( 14 ) for lifting and carrying the housing. A bottom ( 16 ) and sides of the housing form a recess is filled with a layer ( 18 ) of magnetic particles and a display panel ( 20 ) on which an outline of a field of play, or a portion thereof, is drawn. The panel fits over the layer. A stylus ( 24 ) has a tip end ( 26 ) which, when brought into contact with, or in close proximity to, an outer surface of the panel attracts the magnetic particles to the underside of the form an image ( 28 - 32 ) visible to anyone looking at the panel. The user can create as many images as he needs to diagram a play for his team. When done, the user draws a slide ( 36 ) underneath the length of the panel to erase the display.
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