Patent ID: 11921192
Assignee: INNOVO SURGICAL, INC.
Field: Measurement (Instruments)
Classification: CPC G  H | IPC G  H

Claim 0:
1. A method of locating radio frequency identification (RFID) tags at a location in a room, the method comprising:
transmitting a radio frequency (RF) signal from an RFID reader at a first location;
transmitting an RF signal from said RFID reader at a second location;
transmitting an RF signal from said RFID reader at a third location, wherein the first, second, and third locations are different locations;
wherein the RF signals are transmitted in a plurality of directions to all tags at multiple different locations at the same time and request that only certain tags respond, whereby collisions of back scattered signals are reduced;
receiving a signal backscattered off each of the specific tags from the RF signal transmitted from the RFID reader at each of the first, second, and third locations; and
extracting at least one position parameter from the signal backscattered off the tag and received by the RFID reader at each of the first, second, and third locations;
wherein the user navigates from first location to the second location to the third location using the position parameters extracted from each signal backscattered off the tag at each location.