Patent ID: 8564603
Filing Date: 2013-10-22
Classification: G09G

Abstract:
1. A method for controlling a memory device, comprising: categorizing a plurality of sub-memory units of the memory device into a first group of sub-memory units and a second group of sub-memory units, wherein the first group of sub-memory units is different from the second group of sub-memory units; starting from a first selected sub-memory unit in the first group of sub-memory units, sequentially storing pixel data of a plurality of pixels being displayed on a first line of a display screen into the sub-memory units of the first group of sub-memory units until all the pixel data of the plurality of pixels being displayed on the first line are stored into the sub-memory units of the first group of sub-memory units; starting from a second selected sub-memory unit in the second group of sub-memory units, sequentially storing the pixel data of a plurality of pixels being displayed on a second line next to the first line of the display screen into the sub-memory units of the second group of sub-memory units until all the pixel data of the plurality of pixels being displayed on the second line are stored into the sub-memory units of the second group of sub-memory units; starting from a next but one sub-memory unit to the first selected sub-memory unit in the first group of sub-memory units, sequentially storing the pixel data of a plurality of pixels being displayed on a third line next to the second line of the display screen into the sub-memory units of the first group of sub-memory units until all the pixel data of the plurality of pixels being displayed on the third line are stored into the sub-memory units of the first group of sub-memory units; setting an active window for the display screen, wherein the active window includes a plurality of selected pixels; and after pixel data of a last pixel in the active window is stored into one of the plurality of sub-memory units, storing pixel data of a plurality of leading pixels in the active window into a specific storage device other than the plurality of sub-memory units.