US Patent Issued to DENSO International America, DENSO on Oct. 20 for "Passive entry/passive start access systems including round trip time sniffing" (American, Japanese Inventors)

ALEXANDRIA, Va., Oct. 21 -- United States Patent no. 12,770,447, issued on Oct. 20, was assigned to DENSO International America Inc. (Southfield, Mich.) and DENSO Corp. (Kariya-city, Japan).

"Passive entry/passive start access systems including round trip time sniffing" was invented by Raymond Michael Stitt (Ada, Mich.) and Yuki Tokunaga (Kariya-city, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A system for includes master and sniffer devices. The master device includes: first antennas with different polarized axes; a transmitter transmitting a challenge signal via the first antennas from the vehicle to a slave device, where the slave device is a portable access device; and a receiver receiving a re...