Patent ID: 8040441

Claim:
A display apparatus for displaying color images on a screen by projecting each-color image beams modulated from illumination light of the corresponding color with a display device driven by a predetermined color signal, the display apparatus comprising: a memory configured to store correction data exhibiting a registration deviation amount on the screen; a displacement calculating unit configured to calculate the registration deviation amount every one pixel of at least one of the color signal based on the correction data stored in the memory; a correcting unit configured to correct the signal level of the one-color signal so that the signal level becomes in proportion to a brightness level on the screen; and a registration deviation correcting unit configured to correct the registration deviation of the one-color signal every one pixel by interpolation arithmetic processing of the color signal corrected with the correcting unit based on the registration deviation amount calculated with the displacement calculating unit, wherein the display device of the corresponding color is driven by the color signal corrected with the registration deviation correcting unit.