A system for generating a data object of a recording of a real-time slide presentation is described. The data object includes a plurality of synchronized overlaid replayable bitstreams including at least a bitstream corresponding to an image of each of a plurality of slides of the slide presentation,...http://www.google.fr/patents/US20040205477?utm_source=gb-gplus-shareBrevet US20040205477 - System for recording a presentation
