Patent ID: 8582029

Claim:
A picture signal processing unit comprising: a first double rate conversion section performing double frame rate conversion on an input picture signal configured of original frames through additionally inserting a first interpolation frame between a couple of successive original frames, the first interpolation frame being generated by interpolation with motion compensation from the couple of successive original frames, and then the first double rate conversion section outputting a picture signal configured of the original frames and the first interpolation frames; a second double rate conversion section performing double frame rate conversion on the input picture signal through generating a second and a third interpolation frames followed by allocating the second and the third interpolation frames at predetermined time positions between the couple of successive original frames in place of the couple of successive original frames, the second and the third interpolation frames being generated by interpolation with motion compensation from the couple of successive original frames, and then the second double rate conversion section outputting a picture signal configured of the second and the third interpolation frames; a storage section storing the original frame and the first to the third interpolation frames; and a quadruple rate conversion section performing quadruple frame rate conversion on the input picture signal through sequentially reading out the original frame and the first to the third interpolation frames from the storage sections in a quadruple rate, and then the quadruple rate conversion section outputting an output picture signal configured of the original frame and the first to the third interpolation frames.