The present invention provides, among others, a display-screen-sharing system capable of transmitting data of a display screen appearing on a transmission-side terminal to a reception-side terminal with a high degree of efficiency in accordance with a processing state of the reception-side terminal....http://www.google.co.uk/patents/US20040253991?utm_source=gb-gplus-sharePatent US20040253991 - Display-screen-sharing system, display-screen-sharing method, transmission-side terminal, reception-side terminal, and recording medium