A low-cost implementation of lecture distribution system utilizing FPGA and mobile devices

In recent years, projector and the screen is being used by lecturers in the university. The large classrooms might prepare multiple projectors and screens to display the same image of the main screen. But it is high cost. This paper proposes a low-cost implementation of lecture distribution system for classroom. This system detects the laser pointer spot on the main screen and output the slide images with a pointer cursor along with the pointed spot in a mobile device's Web browser.