ALEXANDRIA, Va., Aug. 12 -- United States Patent no. 12,704,564, issued on Aug. 11, was assigned to Niantic Spatial Inc. (San Francisco).
"Magnetometer heading error estimation" was invented by Ben Benfold (Oxford, Great Britain).
According to the abstract* released by the U.S. Patent & Trademark Office: "A client device estimates an error in a heading component of a magnetometer measurement based on an error in a vertical component of the magnetometer measurement. The client device receives a three-dimensional measurement from a magnetometer including a heading and a vertical component. The client device identifies an expected vertical component based on a position of the client device and a magnetic map. The client device generates an e...