SYSTEM AND METHOD FOR ISSUING COMMANDS BASED ON PEN MOTIONS ON A GRAPHICAL KEYBOARD

A command pattern recognition system based on a virtual keyboard layout combines pattern recognition with a virtual, graphical, or on-screen keyboard to provide a command control method with relative ease of use. The system allows the user conveniently issue commands on pen-based computing or communication devices. The system supports a very large set of commands, including practically all commands needed for any application. By utilizing shortcut definitions it can work with any existing software without any modification. In addition, the system utilizes various techniques to achieve reliable recognition of a very large gesture vocabulary. Further, the system provides feedback and display methods to help the user effectively use and learn command gestures for commands.