Varying field electronic tag detection system
First Claim
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1. An electronic tag detection system for detecting multiple electronically detectable tags in a detection zone, comprising:
- first and second field generators, each having a respective antenna for generating an electromagnetic field in a detection zone defined between said antennas; and
, at least one of said field generators being responsive to a presence of at least two electronically detectable tags in said detection zone, for varying an intensity of at least one of said electromagnetic fields so that only one of said electronically detectable tags is detected in said varied electromagnetic field.
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Abstract
The invention concerns a system for detecting multiple tags in a detection zone. The system includes an electronic tag detection system having first and second field generators, each having a respective antenna for generating an electromagnetic field in a detection zone defined between the antennas. Additionally, at least one of the field generators can be responsive to a presence of at least two electronically detectable tags in the detection zone, for varying an intensity of at least one of the electromagnetic fields.
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Citations
20 Claims
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1. An electronic tag detection system for detecting multiple electronically detectable tags in a detection zone, comprising:
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first and second field generators, each having a respective antenna for generating an electromagnetic field in a detection zone defined between said antennas; and
,at least one of said field generators being responsive to a presence of at least two electronically detectable tags in said detection zone, for varying an intensity of at least one of said electromagnetic fields so that only one of said electronically detectable tags is detected in said varied electromagnetic field. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A method for detecting multiple electronically detectable tags in a detection zone, comprising:
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providing first and second field generators, each having a respective antenna for generating an electromagnetic field in a detection zone defined between said antennas, varying an intensity of at least one of said electromagnetic fields by at least one of said field generators being responsive to a presence of at least two electronically detectable tags in said detection zone. - View Dependent Claims (18, 19, 20)
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Specification