| 摘要 |
The invention relates to a graphic user interface comprising an interaction area for interacting with a user, said graphic user interface being arranged to position a cursor within the interaction area, wherein a precision interaction point is assigned to the cursor in order to enable said positioning, said precision interaction point being defined as a preset fraction of a distance between a user definable stationary interaction point 11 and a user definable movable interaction point 13 . Preferably, both points 11, 13 are indicated to the user during the procedure of setting the precision interaction point 17 , as well as the actual position of the precision interaction point 17 for a visual feed back. In case the user is not satisfied with the current position of the precision interaction point 17 , he further moves the movable interaction point 13 thus repositioning the precision interaction point until his satisfaction. Usually, for user's convenience, the value of the fraction is set to 0.5 yielding the precision interaction point at the middle between the points 11, 13 . Alternatively, the fraction can be set to a value less than 0.5 to position the precision interaction point 17 closer to the stationary interaction point 11 . Still alternatively, the fraction can be set at a value greater than 0.5, but less than 1.0 to position the precision interaction point closer to the movable interaction point 13 . Still alternatively, the value of the fraction is set to a value greater than two, yielding a substantial magnification of the distance b. Preferably, the precision interaction point is positioned on the line 15 connecting points 11, 13 . Alternatively, the position of the precision interaction point can be defined at an intersection of a perpendicular set at the fraction distance with a reference object. The invention further relates to a system comprising a customizable device and a graphic user interface. The invention still further relates to a method of defining the precision interaction point.
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