Method and apparatus involving global positioning and long-range wireless link using a tag

• Main Authors: RAJAPAKSE RAVINDRA U, FARRELL STEVEN J, SHANNON DAVID L, ZHU LIPING JULIA
• Format: Patent
• Language: English
• Published: 04.03.2014
• Subjects: ALARM SYSTEMS; ORDER TELEGRAPHS; PHYSICS; SIGNALLING; SIGNALLING OR CALLING SYSTEMS

A tag has a transmitter for transmitting first wireless signals, and a receiver for receiving second wireless signals from which the tag can determine its current physical location. A different embodiment includes a tag having a transmitter for transmitting wireless signals, and a reader having a re...