ALEXANDRIA, Va., June 4 -- United States Patent no. 12,320,896, issued on June 3, was assigned to Apple Inc. (Cupertino, Calif.).
"Transmitter and receiver localization" was invented by Jack Erdozain Jr. (San Francisco) and Travis J. McQueen (Lee, N.H.).
According to the abstract* released by the U.S. Patent & Trademark Office: "Methods and apparatus for transmitter and receiver localization within an environment. A transmitter transmits a signal that includes information (e.g., wavelength, polarization, and/or modulation) that varies based on observation angle. Receiver(s) may estimate direction of the transmitter in the environment based on the received signal. Intensity of the signal may be used to determine distance of the transmitter...