1. A data presentation apparatus having a function to generate a pointer image pointing a position in a presentation image, the data presentation apparatus comprising: an image transmission section that transmits an image data of the presentation image to a terminal; a receiver that receives a control signal to determine a display position of the pointer image in the presentation image, the control signal being transmitted from the terminal; and an image generation section that generates an image data of a composite image based on the control signal, the composite image comprising the presentation image and the pointer image displayed in the presentation image.