Patent ID: 7310091

Claim:
A pen stroke simulation device installed in a main system, the main system connecting to a handwriting pen by a signal transmission line, the handwriting pen comprising: a pen tip; a pen tip position sensor for capturing a main position coordinates of the pen tip on a handwriting tablet that generates a main position data; a pressure sensor for sensing pressure by the pen tip on the handwriting tablet and generating a pressure value; wherein the handwriting pen transfers the main position data and the pressure value through the signal transmission line to the main system; the pen stroke simulation device comprising: a pressure-radius transformation module for receiving the pressure value and transforming the pressure value to a radius value; a positive vector generation module for receiving the main position data and generating a positive vector data according to the main position data; a density location generation module connecting to the pressure-radius transformation module and the positive vector generation module for generating a plurality of density location data in the direction of the positive vector at the main positions based on the radius and the positive vector data to express a plurality of coordinates of the density locations; and a pen stroke generation module for drawing a main line according to the pen tip sliding across the main positions over time and drawing a plurality of density lines according to the density location data where each main position data corresponding to a plurality of the density location data.