Flexible Screen Sharing System between PC and Tablet for Collaborative Activities

We have developed a screen sharing system to share contents between two persons, and applicable to one-to-one remote teaching. The screen of a PC at one side is shared with the screen of a tablet at the other side through the network to convey instructions from an operator to a collaborator. This system makes it possible to arbitrarily select a part of the screen of the PC at the operator side. The selected screen is presented in the tablet at the collaborator side. The collaborator can adjust the scale of contents, and capture the screen. By analyzing such operations, the system can understand and record which parts of the contents the collaborator paid attention to. In addition, the camera of the tablet can be used as a simple scanner to digitize paper documents easily. Further, characters and symbols drawn with a finger or a pen on the tablet screen can be presented on the PC at the other side.