Methods of determining a communications range of an interrogator of a wireless identification system and methods of verifying operation of a wireless identification system
First Claim
1. A method of determining a communications range of an interrogator of a wireless identification system, the method comprising:
- outputting a plurality of forward link wireless signals using a radio frequency identification device interrogator;
moving the radio frequency identification device during the outputting of the forward link wireless signals;
receiving at least some of the forward link wireless signals using a radio frequency identification device;
outputting a plurality of responsive signals after the receiving using the radio frequency identification device; and
identifying positions of the radio frequency identification device during the outputting of the responsive signals to identify a communications range of the interrogator.
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Accused Products
Abstract
This invention provides radio frequency identification devices, wireless communication systems, communication methods, methods of forming a radio frequency identification device, methods of testing wireless communication operations, and methods of determining a communication range. According to a first aspect, a radio frequency identification device includes a substrate; communication circuitry coupled with the substrate and configured to at least one of receive wireless signals and communicate wireless signals; and indication circuitry coupled with the communication circuitry and configured to indicate operation of the radio frequency identification device. A communication method according to another aspect includes providing a radio frequency identification device including indication circuitry; receiving a wireless signal within the radio frequency identification device; and indicating operation of the radio frequency identification device using the indication circuitry after the receiving.
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Citations
18 Claims
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1. A method of determining a communications range of an interrogator of a wireless identification system, the method comprising:
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outputting a plurality of forward link wireless signals using a radio frequency identification device interrogator;
moving the radio frequency identification device during the outputting of the forward link wireless signals;
receiving at least some of the forward link wireless signals using a radio frequency identification device;
outputting a plurality of responsive signals after the receiving using the radio frequency identification device; and
identifying positions of the radio frequency identification device during the outputting of the responsive signals to identify a communications range of the interrogator. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method of determining a communications range of an interrogator of a wireless identification system, the method comprising:
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outputting a plurality of forward link wireless signals using an interrogator;
outputting a continuous wave signal using the interrogator;
receiving at least some of the forward link wireless signals using a remote communications device;
backscatter modulating the continuous wave signal responsive to the receiving of at least some of the forward link wireless signals; and
identifying positions of the remote communications device during the backscatter modulating to identify a communications range of the interrogator. - View Dependent Claims (8, 9, 10, 11)
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12. A method of determining a communications range of a wireless identification system, the method comprising:
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providing a radio frequency identification device;
moving the radio frequency identification device throughout an area;
receiving a plurality of forward link wireless signals within the radio frequency identification device during the moving and during the presence of the radio frequency identification device within the communications range;
outputting a plurality of human perceptible signals using the radio frequency identification device responsive to the receiving; and
identifying a plurality of positions corresponding to the outputting of the human perceptible signals to identify the communications range of the wireless identification system. - View Dependent Claims (13, 14, 15)
receiving a continuous wave signal using the radio frequency identification device; and
backscatter modulating the continuous wave signal using the radio frequency identification device responsive to the receiving.
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16. A method of verifying operation of a wireless identification system, the method comprising:
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providing a radio frequency identification device and an interrogator of the wireless identification system, the radio frequency identification device having indication circuitry;
outputting a forward link wireless signal using the interrogator;
outputting a continuous wave signal;
receiving the forward link wireless signal using the radio frequency identification device;
outputting a human perceptible signal using the indication circuitry responsive to the receiving of the forward link wireless signal to verify operation of the wireless identification system; and
outputting a return link wireless signal responsive to the receiving, wherein the outputting of the return link wireless signal comprises backscatter modulating the continuous wave signal. - View Dependent Claims (17)
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18. A method of determining a communications range of an interrogator of a wireless identification system, the method comprising:
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outputting a plurality of forward link wireless signals using a radio frequency identification device interrogator;
outputting a continuous wave signal;
receiving at least some of the forward link wireless signals using a radio frequency identification device;
outputting a plurality of responsive signals after the receiving using the radio frequency identification device, wherein the outputting of the responsive;
signals comprises backscatter modulating the continuous wave signal; and
identifying positions of the radio frequency identification device during the outputting of the responsive signals to identify a communications range of the interrogator.
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Specification