ALEXANDRIA, Va., June 10 -- United States Patent no. 12,292,839, issued on May 6, was assigned to Texas Instruments Inc. (Dallas).

"Write merging on stores with different privilege levels" was invented by Naveen Bhoria (Plano, Texas), Timothy David Anderson (University Park, Texas) and Pete Hippleheuser (Murphy, Texas).

According to the abstract* released by the U.S. Patent & Trademark Office: "A caching system including a first sub-cache, a second sub-cache, coupled in parallel with the first sub-cache, for storing write-memory commands that are not cached in the first sub-cache, the second sub-cache including privilege bits configured to store an indication that a corresponding cache line of the second sub-cache is associated with a lev...