US Patent Issued to Rambus on March 3 for "DRAM refresh control with master wordline granularity of refresh intervals" (California Inventors)

ALEXANDRIA, Va., March 3 -- United States Patent no. 12,566,557, issued on March 3, was assigned to Rambus Inc. (San Jose, Calif.).

"DRAM refresh control with master wordline granularity of refresh intervals" was invented by Thomas Vogelsang (Mountain View, Calif.), Torsten Partsch (San Jose, Calif.), Brent Steven Haukness (Sunnyvale, Calif.) and John Eric Linstadt (Palo Alto, Calif.).

According to the abstract* released by the U.S. Patent & Trademark Office: "DRAM cells need to be periodically refreshed to preserve the charge stored in them. The retention time is typically not the same for all DRAM cells but follows a distribution with multiple orders of magnitude difference between the retention time of cells with the highest charge los...