ALEXANDRIA, Va., Nov. 25 -- United States Patent no. 12,483,287, issued on Nov. 25, was assigned to Amazon Technologies Inc. (Seattle).

"Low-rate wireless personal area network (LR-WPAN) preamble detection in the presence of concurrently transmitted wireless signals" was invented by Srihari Shankar (Newark, Calif.), Ravi Ichapurapu (Morgan Hill, Calif.) and Justin Christopher Kenny (Duvall, Wash.).

According to the abstract* released by the U.S. Patent & Trademark Office: "Technologies directed to preamble detection in co-existence environments of WLAN and LR-WPAN signals are described. One wireless device has a first radio that sends a first RF signal to a second wireless device and a second radio that operates according to the IEEE 802....