METHOD AND SYSTEM FOR LOCATING A HAND-HELD TERMINAL
First Claim
1. A system for determining a location of an RFID reader, the system comprising:
- a plurality of transmitters having known reference points, each transmitter comprising a simulation circuit for transmitting a sequence of unique RFID pseudo tag signals, each unique RFID pseudo tag signal in the sequence having a unique range of transmission, each unique RFID pseudo tag signal in the sequence comprising a tag identification indicating the range of transmission of the pseudo tag signal and a transmitter identification value indicating the transmitter transmitting the pseudo tag signal;
an RFID reader for receiving a plurality of sequences of the unique RFID pseudo tag signals from the plurality of transmitters, and distinguishing between each unique RFID pseudo tag signal received; and
a location calculator for calculating the location of the RFID reader based on the plurality of the received tag identifications and the plurality of the received transmitter identification values.
2 Assignments
0 Petitions
Accused Products
Abstract
Disclosed herein is a system for and method of determining the location of an RFID reader, the system comprising: a plurality of transmitters having a known reference point. Each transmitter includes a circuit for transmitting a sequence of unique RFID pseudo tag signals. Each unique RFID pseudo signal in the sequence has a unique range of transmission. Each unique RFID pseudo tag in the sequence has a tag identification indicating the range of transmission of the pseudo tag signal and a transmitter identification value indicating the transmitter from which the pseudo tag signal was transmitted. An RFID reader receives the unique RFID pseudo tag signals and distinguishes between each received unique RFID pseudo tag signal. A location calculator calculates the location of the RFID reader based on the range of transmission indicated in the tag identification and the location obtainable from the transmitter identification value of the unique RFID pseudo tags received by the RFID reader.
-
Citations
18 Claims
-
1. A system for determining a location of an RFID reader, the system comprising:
-
a plurality of transmitters having known reference points, each transmitter comprising a simulation circuit for transmitting a sequence of unique RFID pseudo tag signals, each unique RFID pseudo tag signal in the sequence having a unique range of transmission, each unique RFID pseudo tag signal in the sequence comprising a tag identification indicating the range of transmission of the pseudo tag signal and a transmitter identification value indicating the transmitter transmitting the pseudo tag signal; an RFID reader for receiving a plurality of sequences of the unique RFID pseudo tag signals from the plurality of transmitters, and distinguishing between each unique RFID pseudo tag signal received; and a location calculator for calculating the location of the RFID reader based on the plurality of the received tag identifications and the plurality of the received transmitter identification values. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
-
-
10. A method of determining the location of an RFID reader, the method comprising:
-
transmitting a sequence of unique RFID pseudo tag signals from a plurality of sources to the RFID reader, each source having a known reference point, each unique RFID pseudo tag signal in the sequence comprising a tag identification indicating the range of transmission of the unique RFID pseudo tag signal and a transmitter identification value indicating the source from which the RFID pseudo tag signal is transmitted; receiving a plurality of sequences of the unique RFID pseudo tag signals from the plurality of sources, distinguishing between each unique RFID pseudo tag received by the RFID reader; and calculating the location of the RFID reader based on the plurality of the received tag identifications and plurality of the received transmitter identification values. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
-
Specification