Abstract: A method and apparatus for decompressing compressed data, which includes video data that has been compressed in accordance with the MPEG 2 standard, wherein the processing begins by retrieving components from a non-local memory at a rate that is independent of the rate in which the components were written into the non-local memory. The components include motion vectors and run/level data. As the components are retrieved from memory, the run/level data is used to produce representations of the uncompressed data. As the representations of the uncompressed data are generated, they are processed based on the motion vector data to recapture the uncompressed data. The uncompressed data is then stored in a frame buffer for subsequent display.

Abstract: The video decoding apparatus and method includes providing a storage pointer command over a bus for a video decoder, wherein the storage pointer command contains index data associated with compressed video data. The index data represents, for example, a buffer storage location in a buffer that stores both decoded video being displayed and simultaneously uses another portion of the same buffer for decoding, such that the index data represents the storage location where corresponding decoded data is finally stored before display. The index data is compared with a current index or pointer associated with a current display line of a display engine. The apparatus and method includes stalling storage of compressed or uncompressed video data based on the comparison.

Abstract: One embodiment of a de-interlacing device has a decoder that extracts decoding motion vector data for use in de-interlacing of decompressed picture data, from an MPEG-2 type compressed data stream containing interlaced decompressed picture data made up of macroblock of data. The de-interlacing device also has a video rendering device for receiving the extracted decoding motion vector data from the decoder. The decoder has a determinator for determining whether the macroblock of data contains motion based on the decoding motion vector data and at least a subset of the block of data. The decoder generates motion vector based de-interlacing information containing information indicating whether each macroblock contains motion or no motion and if desired, a level of confidence that the referenced data is suitable for a particular method of de-interlacing.