Abstract: A handwriting pen used in a tablet type handwriting entry device comprises a pen tip, a pen tip position sensor, and a pressure sensor. The pen tip position recognizer captures a main position coordinates as the pen tip taps on a tablet panel, and generates a main position data. The pressure generator senses a press by the pen tip on the tablet, and generates a pressure value. The handwriting pen connects to a main system by a signal transmission line, and the acquired information is transferred to the main system. The main system has a pen stroke simulation apparatus that manipulates the main position data and the pressure value for simulating different pen strokes.

Abstract: The invention provides a method for switching the size of an image displayed on a touch screen between a full-screen size and a normal size. A user can selectivity display the image on the touch screen in the full-screen size or the normal size by use of the method according to the invention. A user interface is previously defined. The user interface includes a first level, where a plurality of application icons are previously defined, and a second level wherein the image is previously defined. When the image is displayed on the touch screen in the full-screen size, the image covers the application icons which are not closed.

Abstract: A handwriting pen used in a tablet type handwriting entry device comprises a pen tip, a pen tip position sensor, and a pressure sensor. The pen tip position recognizer captures a main position coordinates as the pen tip taps on a tablet panel, and generates a main position data. The pressure generator senses a press by the pen tip on the tablet, and generates a pressure value. The handwriting pen connects to a main system by a signal transmission line, and the acquired information is transferred to the main system. The main system has a pen stroke simulation apparatus that manipulates the main position data and the pressure value for simulating different pen strokes.