ERASING MARKINGS IN DIGITAL PEN AND PAPER SYSTEMS

摘要

A digital pen (400) is adapted to acquire information from a positiondetermining pattern (108) printed on digital paper (100) to enable the position of the pen (400) to be determined. The pen (400) has a writing stylus (402) adapted to write handwritten markings onto the paper (100) and being adapted to capture those handwritten markings digitally. The pen (400) also has an eraser (404) adapted to apply an erasing material on an area of the paper (100) in order to erase markings on said area of the paper (100) and adapted to capture the position of the erased area digitally.