Patent ID: 7995110

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 (N≧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, wherein said pixel packing unit selects every N pixel signals from pixels on the read-out line at a predetermined interval and groups them into pixel signal packs for output; said scan output unit sub-scans scan outputs of the pixel signal packs in one direction of the read-out line, the pixel signal packs being aligned in the second main scanning direction; and through the operations of said pixel packing unit and said scan output unit, the scan conversion device achieves a scan pattern in which N divided regions in a screen are scanned for output in parallel.