Patent ID: 8523366

Claim:
A projector comprising: a plurality of image information input terminals to which image information is inputted, each of the plurality of information input terminals being configured to receive image information from a separate external device; an image projection unit which projects an image corresponding to image information received by a selected one of the plurality of image information input terminals; an image pickup unit which shoots the image projected from the image projection unit; an operation input unit which receives operation input; an image switching unit which switches the image projected from the image projection unit by switching which one of the plural image information input terminals is selected based on the operation input received by the operation input unit; and a projection condition control unit which allows the image projection unit to project a predetermined test image at the time when the image switching unit switches which one of the plural image information input terminals is selected, and allows the image pickup unit to shoot the projected test image to control projection condition of the image based on the picked-up image result.