US Patent Issued to Sonitor Technologies AS on March 18 for "Ad hoc positioning of mobile devices using near ultrasound signals" (Norwegian Inventors)

ALEXANDRIA, Va., March 19 -- United States Patent no. 12,253,596, issued on March 18, was assigned to Sonitor Technologies AS (Oslo, Norway).

"Ad hoc positioning of mobile devices using near ultrasound signals" was invented by Wilfred Edwin Booij (Oslo, Norway) and Mattheus Franciscus Albertus Ten Veldhuis (Oslo, Norway).

According to the abstract* released by the U.S. Patent & Trademark Office: "An approach for providing a lower cost real time location system in less trafficked areas of a building. This approach uses on-board audio capabilities of a mobile device to receive a room response trace resulting from a self-generated acoustic signal. By comparing the room response trace to a modeled room response trace, the location of the mobi...