Patent ID: 8896606

Claim:
A display method of a touch screen device, comprising: sampling coordinates at touch points when a touch unit moves on a touch screen; determining whether a moving trajectory of the touch unit is a curved line according to inclination between the sampled coordinates; and creating type-A control points, each of which is created by calculating a middle position between two contact points on a tangent line, wherein the two contact points are contact points by the tangent line of neighboring sampled coordinates upon determining that the moving trajectory of the touch unit is the curved line, and the neighboring sampled coordinates are circles corresponding to pressure; creating type-B control points, each of which is created by intersecting two neighboring tangent lines of the sampled coordinates; creating a simultaneously smoothed piece to create a closed path configured by straight and curved lines using the type-A control points and the type-B control points, wherein the curve lines pass through the type-A control points and the curve lines are influenced by but do not pass through the type-B control points; and displaying the simultaneously smoothed piece connected to the old simultaneously smoothed piece.