US Patent Issued to SiFive on Dec. 9 for "Cache coherency state request vector encoding and use thereof" (American, French Inventors)

ALEXANDRIA, Va., Dec. 9 -- United States Patent no. 12,493,551, issued on Dec. 9, was assigned to SiFive Inc. (Santa Clara, Calif.).

"Cache coherency state request vector encoding and use thereof" was invented by Wesley Waylon Terpstra (San Mateo, Calif.), Eric Andrew Gouldey (Fort Collins, Colo.), Michael Klinglesmith (Chambery, France) and Henry Cook (Berkeley, Calif.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method and apparatus for a cache coherency state request vector is described. A method includes selecting, by a first agent, one or more bits in a cache coherency state request vector, where a selected bit in the cache coherency state request vector indicates an acceptable cache coherency state...