Abstract: Apparatus comprises data compression circuitry to process a set of data values, the data compression circuitry comprising: detector circuitry to detect, for each of n complementary groups of m data values of the set of data values, a first subset of the groups for which the data values in the group have a predetermined pattern of data values, where m and n are integers and m×n is the number of data values in the set of data values; generator circuitry to generate a compressed data packet comprising at least: a representation of a second subset of the groups, the second subset being each of then complementary groups other than groups in the first subset; and an indication of a group position, with respect to the set of data values, of each group in the second subset of groups. Complementary decompression apparatus is also described.

Abstract: Apparatus comprises data compression circuitry to process a set of data values, the data compression circuitry comprising: detector circuitry to detect, for each of n complementary groups of m data values of the set of data values, a first subset of the groups for which the data values in the group have a predetermined pattern of data values, where m and n are integers and m×n is the number of data values in the set of data values; generator circuitry to generate a compressed data packet comprising at least: a representation of a second subset of the groups, the second subset being each of then complementary groups other than groups in the first subset; and an indication of a group position, with respect to the set of data values, of each group in the second subset of groups. Complementary decompression apparatus is also described.

Abstract: A display list with slot instructions is provided to interface between platform software and a display engine. A display list interface is created for each frame of image data that is to be updated and displayed on a display. In some circumstances, the display list may be reused for subsequent frames, for example, when generating a stream of video images for a video mode display showing a static image. A display list may be part of the interface between a software driver and a scalable display engine architecture that has multiple repetitive processing blocks enabling the same or multiple frames to be processed in parallel to produce update frames for one or more display devices.