Abstract: In a data processing system that comprises a memory 8 comprising N memory banks 11, a memory controller is configured to store one or more N data unit×N data unit arrays of data in the memory 8 such that each data unit in each row of each N×N data unit array is stored in a different memory bank of the N memory banks 11, and such that each data unit in each column of each N×N data unit array is stored in a different memory bank of the N memory banks 11.

Abstract: A system for encoding and decoding a sequence of frames of video data. The system includes encoding processing circuitry configured to encode a sequence of source video frames using other source frames as reference frames. The encoding processing circuitry is also configured, when encoding a new source frame that has a different resolution to the resolution of a reference frame, to generate a scaled copy of the reference frame for the new source frame. The encoding processing circuitry is also configured to encode the new source frame using the scaled copy of the reference frame to provide output encoded video image data. The system also includes a video decoder configured to decode the encoded scaled copy of the reference frame and decode the encoded source frame using the decoded scaled copy of the reference frame to provide output video image data for the source frame.