Patent ID: 9224321
Filing Date: 2015-12-29
Classification: G09G,H04N

Abstract:
1. A projector comprising: an OSD deformation ratio calculating unit that calculates an OSD deformation ratio on a reference point which is set in an OSD image superimposed on a main image, when performing a correction of a trapezoidal distortion with respect to OSD data for the OSD image; an OSD enlargement ratio determination unit that determines an OSD enlargement ratio of the OSD image for changing a size of the OSD image based on the calculated OSD deformation ratio; an image synthesis unit that generates synthesis image data for a synthesis image which is generated by synthesizing the main image and the OSD image superimposed on the main image with a size of the OSD image determined based on the OSD enlargement ratio; a trapezoidal distortion correction unit that corrects the trapezoidal distortion with respect to the synthesis image data; and a projection optical system that projects the synthesis image based on the synthesis image data which is subjected to the correction of the trapezoidal distortion, wherein when the calculated OSD deformation ratio indicates the OSD image is contracted by the correction of the trapezoidal distortion, the OSD enlargement ratio determination unit determines the OSD enlargement ratio so as to enlarge the OSD image.