ALEXANDRIA, Va., March 24 -- United States Patent no. 12,585,005, issued on March 24, was assigned to ZaiNar Inc. (Redwood City, Calif.).
"Hybrid method for time-of-arrival-based ranging" was invented by Mainak Chowdhury (Redwood City, Calif.), Philip A. Kratz (Redwood City, Calif.), Jonathan Shiao-En Lu (Redwood City, Calif.), Srdjan Miocinovic (Redwood City, Calif.) and Siamak Yousefi (Redwood City, Calif.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A method includes: receiving a ranging signal from the transmitter comprising a set of multiplexed sub-signals, each multiplexed sub-signal characterized by a frequency in a set of frequencies; calculating a time-based time-of-arrival estimate based on the s...