Projector for producing image of computer, has projection control unit which receives and projects image on projection screen whereby picture receiving unit receives complete projection picture through projection control unit

摘要

The projector has projection control unit (111) arranged in hollow housing, at fixed position which receives image of computer and projects image on projection screen for producing projection image. Receiving unit receives a picture on projection screen including an area which is covered by the complete projection picture. Picture receiving unit (112), which is arranged at fixed position, receives complete projection picture through projection control unit : Projector has a computer electrically connected to the projector to project and produce a projection picture. An independent claim is also included for teaching and lecture system.