A gaming system may include a number of gaming units and a host computer operatively coupled to the gaming units, and be configured to allow a gaming tournament to be conducted. Each of the gaming units may comprise a video display unit, a microphone, a camera, a speaker and a gaming unit controller....http://www.google.de/patents/US7753790?utm_source=gb-gplus-sharePatent US7753790 - Apparatus and method for gaming tournament network
