A document camera includes a stand and a digital camera attached thereto to be freely detachable, and ensures an electrical connection therebetween at an attaching time. The digital camera is structured to be usable as a single unit. Moreover, a charging circuit is provided in the stand to make it possible...http://www.google.fr/patents/US7751092?utm_source=gb-gplus-shareBrevet US7751092 - Document camera and document camera system
