System for presenting audiovisual information to an audience

An audiovisual information presentation system, which is used together with an optical image projection apparatus for sequentially optically projecting illustrations drawn on paper sheets in advance onto a projection screen when a presentation is made to an audience at a meeting place, and whch stores and administrates the illustrations on the paper sheets, said system comprising:

• image input means for sensing images projected on said projection screen of said optical image projection apparatus to produce corresponding video image signals;
• speech input means for receiving an input speech relating to the images projected on said projection screen and producing audio signals corresponding to each video image signal in a real time manner;
• data storage means electrically connected to said image input means and said speech input means and having a memory capacity sufficient to store a plurality of pairs of image and audio data together with index code data, each of said pairs including image data to be displayed and corresponding audio data;
• control means, connected to said data storage means, for, in a recording mode, storing in said data storage means the image data input by said image input means together with the corresponding audio data input by said speech input means, and for, in a search mode, retrieving a desired pair of image and audio data from said data storage means when an image already projected on said projection screen is requested again during the presentation;
• and
• reproduction means, connected to said data storage means, for receiving the received pair of image and audio data and electrically reproducing it independent of an optical image displayed on said projection screen.