Method and system with functionality for finding range between an electronic tag reader and tag
First Claim
1. An electronic tag comprising an encoded bit data pattern in a portion of a data field from said tag resulting in a backscatter signal from said tag when said tag responds to a read command from an interrogator.
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Accused Products
Abstract
In an embodiment there is an electronic tag having an encoded bit data pattern in a portion of a data field from the tag resulting in a modulated backscatter signal from the tag when the tag responds to a read command from an interrogator. In an embodiment there is a method for determining the range between an antenna of an interrogator and an electronic tag comprising the steps of: 1) singulating an electronic tag of interest; 2) sending a range command to the electronic tag of interest; 3) detecting a modulated backscatter response from the electronic tag of interest; 4) measuring a time delay between a transmitted modulated carrier signal from the interrogator and the modulated backscatter response; 5) calculating a distance between the antenna and the electronic tag using the time delay; and 6) reporting the distance.
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Citations
37 Claims
- 1. An electronic tag comprising an encoded bit data pattern in a portion of a data field from said tag resulting in a backscatter signal from said tag when said tag responds to a read command from an interrogator.
- 4. An electronic tag comprising an encoded bit data pattern in a portion of a data field from said tag resulting in a modulated backscatter signal from said tag when said tag responds to a read command from an interrogator.
- 7. An electronic tag comprising an encoded bit data pattern in a portion of a data field from said tag resulting in a modulated backscatter signal from said tag, wherein said modulated backscatter signal is interrogated for an interval of time when said tag responds to a read command from an interrogator.
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11. An electronic tag comprising:
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a) an encoded bit data pattern in a portion of a data field from said tag resulting in a backscatter signal from said tag when said tag responds to a first read command from an interrogator;
b) an encoded bit data pattern in a portion of a data field from said tag resulting in a modulated backscatter signal from said tag when said tag responds to a second read command from an interrogator; and
c) an encoded bit data pattern in a portion of a data field from said tag resulting in a modulated backscatter signal from said tag, wherein said modulated backscatter signal is interrogated for an interval of time when said tag responds to a third read command from an interrogator. - View Dependent Claims (12, 13, 14)
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15. A method for finding range between an antenna of an interrogator and an electronic tag comprising the steps of:
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singulating a population of electronic tags using said interrogator for locating a tag of interest having a predicted response;
transmitting a modulated carrier signal;
detecting said predicted response;
measuring a time delay between said modulated carrier signal and said predicted response; and
calculating a distance between said antenna and said tag of interest using said time delay. - View Dependent Claims (16, 17)
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18. A method for finding range between an antenna of an interrogator and an electronic tag comprising the steps of:
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singulating a population of electronic tags using said interrogator for locating a tag of interest having a predicted response;
transmitting a modulated carrier signal;
detecting said predicted response;
measuring a phase shift between said modulated carrier signal and said predicted response; and
calculating a distance between said antenna and said tag of interest using said phase shift. - View Dependent Claims (19, 20)
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21. A method for determining the range between an antenna of an interrogator and an electronic tag comprising the steps of:
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singulating an electronic tag of interest;
identifying a range bit pattern in said electronic tag of interest;
initiating a query to said electronic tag of interest resulting in a modulated backscatter response;
measuring a time delay between a transmitted modulated carrier signal from said interrogator and said modulated backscatter response;
calculating a distance between said antenna and said electronic tag using said time delay; and
reporting said distance. - View Dependent Claims (22, 23)
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24. A method for determining the range between an antenna of an interrogator and an electronic tag comprising the steps of:
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singulating an electronic tag of interest;
identifying a range bit pattern in said electronic tag of interest;
initiating a query to said electronic tag of interest resulting in a modulated backscatter response;
measuring a phase shift between a transmitted modulated carrier signal from said interrogator and said modulated backscatter response;
calculating a distance between said antenna and said electronic tag using said phase shift; and
reporting said distance. - View Dependent Claims (25, 26)
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27. A method for determining the range between an antenna of an interrogator and an electronic tag comprising the steps of:
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singulating an electronic tag of interest;
sending a range command to said electronic tag of interest;
detecting a modulated backscatter response from said electronic tag of interest;
measuring a phase shift between a transmitted modulated carrier signal from said interrogator and said modulated backscatter response;
calculating a distance between said antenna and said electronic tag using said phase shift; and
reporting said distance. - View Dependent Claims (28, 29)
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30. A method for determining the range between an antenna of an interrogator and an electronic tag comprising the steps of:
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singulating an electronic tag of interest;
sending a range command to said electronic tag of interest;
detecting a modulated backscatter response from said electronic tag of interest;
measuring a time delay between a transmitted modulated carrier signal from said interrogator and said modulated backscatter response;
calculating a distance between said antenna and said electronic tag using said time delay; and
reporting said distance. - View Dependent Claims (31, 32)
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33. A method for determining the range between an antenna of an interrogator and an electronic tag comprising the steps of:
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singulating an electronic tag of interest;
sending a range command to said electronic tag of interest;
detecting a modulated backscatter response from said electronic tag of interest;
measuring a time delay between a transmitted modulated carrier signal from said interrogator and said modulated backscatter response;
calculating a distance between said antenna and said electronic tag using said time delay;
validating data integrity; and
reporting said distance. - View Dependent Claims (34)
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- 35. The method according to claim 33, wherein said distance is used as input to a feedback mechanism.
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35-1. A method for determining the range between an antenna of an interrogator and an electronic tag comprising the steps of:
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singulating an electronic tag of interest;
sending a range command to said electronic tag of interest;
detecting a modulated backscatter response from said electronic tag of interest;
measuring a phase shift between a transmitted modulated carrier signal from said interrogator and said modulated backscatter response;
calculating a distance between said antenna and said electronic tag using said phase shift;
validating data integrity; and
reporting said distance.
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Specification