Patent ID: 6971753

Claim:
A projecting system for projecting an image onto a screen comprising: a projector comprising: a light source; a beam splitter installed on a side of the light source, for splitting a beam generated by the light source into a visible beam and an invisible beam; a first image-forming device for modulating the invisible beam to form a first image; a second image-forming device for modulating the visible beam to form a second image having at least one cursor; and a prism for projecting the first image and the second image onto the screen; and a movable image-capturing device for capturing a part of the first image, the image-capturing device having an output unit for outputting the first image captured by the image-capturing device, wherein the output unit outputs a first part of the first image at a first time, outputs a second part of the first image at a second time; and a data processor for receiving data from the output unit and changing the position of the cursor according to the first part and the second part of the first image.