ALEXANDRIA, Va., May 26 -- United States Patent no. 12,638,312, issued on May 26, was assigned to U-SHIN LTD. (Nagano, Japan).
"Rotation determination device" was invented by Makiko Masuda (Hiroshima, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention provides a rotation determination device capable of determining a rotational operation of a rotating body even if started from an intermediate position, comprising: an encoder section that generates two pulse signals out of phase with each other by the rotating body's rotation; an acquisitor that acquires the levels of two pulse signals; a detector that detects signal changes in two pulse signals; an edge pattern determiner that determin...