A system and method that transmits and displays graphical images among wireless devices in a push-to-talk system. A predefined set of graphical images is stored in a wireless device, and when a user presses a push-to-talk button on the wireless device, the wireless device displays a list of predefined...http://www.google.de/patents/US7725119?utm_source=gb-gplus-sharePatent US7725119 - System and method for transmitting graphics data in a push-to-talk system
