Electronic pointing device e.g. laser pointer, for e.g. presentations, has necessary electronics integrated in wrist-watch, and enables user to show presentation with his bare hand and/or with his index finger on screen

摘要

The device has necessary electronics is integrated in a wrist-watch, and enables a user to show a presentation with his bare hand and/or with his index finger on a screen. A pointer symbol, which follows movement of the hand, is shown on the screen. A wireless connection is provided with a device e.g. laptop, for playing a presentation. Two electrical or electromechanical gyroscopes are used for measuring orientation of the hand. Orientation is determined with respect to a starting point, and absolute coordinates are determined based on the orientation.