ALEXANDRIA, Va., Dec. 2 -- United States Patent no. 12,488,506, issued on Dec. 2, was assigned to Imagination Technologies Ltd. (Kings Langley, Great Britain).

"Compression and decompression of sub-primitive presence indications for use in a rendering system" was invented by Simon Fenney (St. Albans, Great Britain).

According to the abstract* released by the U.S. Patent & Trademark Office: "Compressed data is decompressed to determine sub-primitive presence indications for intersection testing in a rendering system. Entropy encoded data is read from a block of compressed sub-primitive presence indications data and entropy decoding determines a block of entropy decoded data values. Spatial recorrelation on the block of entropy decoded valu...