Abstract: The invention is generally directed to a method and apparatus for efficient rotation of an image. The image is preferably defined by an image matrix in which each datum of the image corresponds to a particular image row and a particular image column of the image matrix. A preferred method includes mapping each of the datum into a memory matrix organized into a plurality of memory rows and a plurality of memory columns. The mapping preferably includes mapping into one of the memory rows: (a) at least two data, both of which correspond to one of the image rows, and (b) at least two image vector portions, a first one of the image vector portions including at least two data each corresponding to one of the image columns, and a second one of the image vector portions including at least two other data each corresponding to another of the image columns.

Abstract: A system and method for conserving memory bandwidth while supporting multiple sprites includes a memory device that stores main display data and the multiple sprites for presentation upon a display device. A display controller populates a fetch table with pixel source identifiers that indicate pixel sources from either the main display data or one of the multiple sprites. The pixel source identifiers correspond to display pixels of the display device. The display controller then utilizes the pixel source identifiers to directly locate the appropriate display pixels from the various pixel sources for providing to the display device.

Abstract: A system and method for effectively storing compressed information in an electronic device includes a memory device coupled to the electronic device for storing the compressed information. A compression module sequentially performs a forward write procedure to store first components of the compressed information. The forward write procedure begins at a top location of the memory device. The compression module concurrently performs a reverse write procedure to store second components and third components of the compressed information sequentially in an interlaced configuration. The reverse write procedure begins at a bottom location of the memory device.