Real-time Screen Sharing Using Web Socket for Presenting Without Projector

The presentation is generally done using a laptop device or Personal Computer (PC) connected to a projector. Participants see a presentation slide show on a particular screen or white painted the wall. However, sometimes, problems occur when the projectors' equipment is not available to the presentation process does not run optimally. Other problems such as projector damage or dead pixel conditions and rainbow effects on the projector often interfere with the display permanently. A presentation without using a projector is one solution to overcome problems that have been proposed in previous research. However, there is still a particular server that is used by presenters and PCs to access those used by clients. The solution to overcome this problem, in this study, will be developed a system that can carry out the activity of sharing presentation between presenter and audience without using a projector. The presenter only requires an ordinary laptop or PC connected to a wireless network. Participants as clients can access the presentation display via a smartphone that is connected to the same wireless network as the server. The system built consists of two main applications: Screen Sharing Server and Screen Sharing Client, which allows sharing of views by implementing a socket web on its data communication model. Test results with 20 smartphone audiences can see the presentation results from the presenter's laptop. The presentation was successfully carried out with the concept of screen sharing in real-time without using additional projectors and computers, no need for cables and without the need for an internet connection.