ALEXANDRIA, Va., Feb. 19 -- United States Patent no. 12,228,421, issued on Feb. 18, was assigned to DENSO Corp. (Kariya, Japan).
"Map update device and storage medium" was invented by Masashi Tsukadaira (Kariya, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A server includes a feature point position estimation section that estimates positions of feature points of a plurality of respective input maps if a position correction section has failed in position correction for an input map, an accumulated data generation section that accumulates the positions of the feature points of the plurality of respective input maps to generate accumulated data, a convergence determination section that determines whethe...