ALEXANDRIA, Va., April 15 -- United States Patent no. 12,603,641, issued on April 14, was assigned to METACUBE Co. LTD. (Tokyo).

"Digital filter circuit, digital filtering method, and storage medium storing digital filtering program" was invented by Masaharu Obayashi (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "A digital filter circuit includes retrieve stream data as a digital signal, and cyclically operate a first phase and a second phase. The circuit includes a short-term storage unit configured to store a local state variable, a long-term storage unit configured to store a global state variable, a first phase synthesizing unit that outputs the digital signal in the first phase under an influence...