Patent ID: 7841722

Claim:
A projection system comprising: an image processing apparatus for processing image data; a projector having a light source device, an optical modulation element for modulating light beams irradiated from the light source device based on the image data to form an optical image and a projection optical apparatus for projecting light modulated by the optical modulation element; and a digital communication unit which connects the image processing apparatus and the projector for enabling the image processing apparatus and the projector to perform digital communication therebetween, wherein the image processing apparatus includes: a first processing apparatus correction unit that performs a projector correction process, which can be performed in the projector, on the image data to generate first correction processed image data; a second processing apparatus correction unit that performs an original display correction process for displaying an image desired to be displayed in the projector on the image data to generate a second correction processed image data; a difference data generation unit that generates difference data for a difference between the first correction processed image data and the second correction processed image data; and a difference data transmission unit that transmits the difference data to the projector through the digital communication unit, and wherein the projector includes: a projector correction unit that performs the projector correction process on the image data to generate the first correction processed image data; a difference correction unit that acquires the difference data transmitted from the image processing apparatus and performs a correction process based on the difference data on the first correction processed image data to generate the second correction processed image data; and a display controller which controls the optical modulation element to display an image based on the second correction processed image data.