Electronic article surveillance system with transition zone tag monitoring
First Claim
1. An EAS system for sensing the presence of EAS tags in a zone including a protection zone and a transition zone outward of said protection zone, said EAS system comprising:
- means for transmitting a signal into said zone so as to reach at least said protection zone,means for receiving and processing signals received from said zone, said receiving and processing means processing said received signals in accordance with first and second different criteria, said first criteria, if satisfied, resulting in the generation of a first signal which can be used to indicate the presence of a tag in said protection zone, and said second criteria, if satisfied, resulting in the generation of a second signal which can be used to indicate the presence of a tag in said transition zone.
3 Assignments
0 Petitions
Accused Products
Abstract
An EAS system having a protection zone in which tags are to be detected and a transition zone outward of the protection zone beyond which tagged articles for sale and/or monitoring can be displayed. The EAS system includes a receiving and processing unit which processes received signals in accordance with first and second different criteria to develop a first signal which can, be used to indicate the presence of a tag in the protection zone and a second signal which can be used to indicate the presence of a tag in the transition zone. Visual indication of the tags in the transition zone is also selectively provided.
28 Citations
38 Claims
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1. An EAS system for sensing the presence of EAS tags in a zone including a protection zone and a transition zone outward of said protection zone, said EAS system comprising:
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means for transmitting a signal into said zone so as to reach at least said protection zone, means for receiving and processing signals received from said zone, said receiving and processing means processing said received signals in accordance with first and second different criteria, said first criteria, if satisfied, resulting in the generation of a first signal which can be used to indicate the presence of a tag in said protection zone, and said second criteria, if satisfied, resulting in the generation of a second signal which can be used to indicate the presence of a tag in said transition zone. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A method for sensing the presence of EAS tags in a zone including a protection zone and a transition zone outward of said protection zone, said method comprising:
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transmitting a signal into said zone so as to reach at least said protection zone, receiving and processing signals received from said zone, said receiving and processing including processing said received signals in accordance with first and second different criteria, said first criteria, if satisfied, resulting in the generation of a first signal which can be used to indicate the presence of a tag in said protection zone, and said second criteria, if satisfied, resulting in the generation of a second signal which can be used to indicate the presence of a tag in said transition zone. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35)
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36. A detector for use with an EAS system, said EAS system sensing the presence of EAS tags in a zone including a protection zone and a transition zone outward of said protection zone and comprising:
- means for transmitting a signal into said zone so as to reach at least said protection zone; and
means for receiving and processing signals received from said zone, said receiving and processing means processing said received signals in accordance with a first criteria, said first criteria, if satisfied, resulting in the generation of a first signal which can be used to indicate the presence of a tag in said protection zone; and
said detector comprising;first means responsive to said signals received by said receiving and processing means of said EAS system; and processing means responsive to said first means for processing said received signals in accordance with a second criteria different from said first criteria, said second criteria, if satisfied, resulting in the generation of a second signal which can be used to indicate the presence of a tag in said transition zone. - View Dependent Claims (37, 38)
- means for transmitting a signal into said zone so as to reach at least said protection zone; and
Specification