Patent ID: 8744233

Claim:
An image signal processing apparatus for outputting an image signal to a display apparatus having a predetermined pixel arrangement of n pixels in a horizontal direction and m pixels in a vertical direction (n and m are natural numbers, respectively), comprising: an input unit configured to input an image signal composed of a luminance signal and color difference signals; a memory; a first conversion unit configured to convert the number of pixels in the horizontal direction of the image signal input by the input unit into 2n pixels and store the image signal in which the number of pixels is converted into the memory; a second conversion unit configured to read out the image signal stored in the memory by the first conversion unit and sample the pixels of the read-out image signal in accordance with the predetermined pixel arrangement of the display apparatus, thereby converting the number of pixels in the horizontal direction of the read-out image signal into n pixels and converting the number of pixels in the vertical direction of the read-out image signal into m pixels; a color conversion unit configured to convert the image signal output from the second conversion unit into a plurality of color component signals corresponding to the pixels of the display apparatus; and a correction unit configured to correct a center of gravity of each of the plurality of color component signals output from the color conversion unit in accordance with the predetermined pixel arrangement of the display apparatus and output the color component signals in each of which the center of gravity is corrected, to the display apparatus, wherein the plurality of color component signals are signals of red, green and blue, and wherein the second conversion unit decides positions of the pixels which are to be sampled, such that the positions of the pixels of green in the color component signals output from the color conversion unit correspond to the positions of the pixels of green in the display apparatus.