Patent ID: 8289414

Claim:
A scan conversion device converting a scan pattern of an input image, comprising: a first buffer unit temporarily storing therein a pixel signal of the input image on each read-out line in a main scanning direction of the input image; a pixel packing unit selecting every N (Nâ‰§2) pixel signals from pixel signals on the read-out line and grouping them, for output, into pixel signal packs in accordance with a predetermined pixel combination rule; a second buffer unit temporarily storing therein the pixel signal packs and aligning them in a second main scanning direction that is different from the main scanning direction; and a scan output unit sequentially scanning, for output, the pixel signal packs aligned in the second main scanning direction in said second buffer unit, wherein a scan pattern of the input image is changed into a scan pattern in which every N output lines in the second main scanning direction are output; said pixel packing unit sequentially selects pixel signals located at symmetric positions with respect to a midpoint of the read-out line and groups them into the pixel signal packs for output; said scan output unit starts scan output at pixel signals located near the midpoint of the read-out line, grouped as the pixel signal packs and aligned in the second main scanning direction, and continues the scan output of the pixel signal packs sequentially in outward directions of the read-out line; and through the operations of said pixel packing unit and said scan output unit, the scan conversion device achieves a scan pattern in which scanning of the output lines starts from a middle of a screen and then continues to move toward both ends of the screen symmetrically.