Methods and apparatuses for reducing false positive alarms

Patent metadata

Field	Value
Publication number	US-11756398-B2
Application number	US-202117205914-A
Country	US
Kind code	B2
Filing date	Mar 18, 2021
Priority date	Mar 18, 2021
Publication date	Sep 12, 2023
Grant date	Sep 12, 2023

Abstract

Aspects of the present disclosure include methods, systems, and non-transitory computer readable media for identifying a first sector proximal to a reader and a second sector proximal to the reader, receiving one or more parameters associated with at least one of a minimum sector count setting, an opposite sector threshold setting, or a suppression threshold setting, applying, to the reader, the one or more parameters associated with the at least one of the minimum sector count setting, the opposite sector threshold setting, or the suppression threshold setting, and detecting a tag based on the one or more parameters.

First claim

What is claimed is:

1. A method of reducing false positive alarms, comprising:
identifying a first sector proximal to a reader and a second sector proximal to the reader;
receiving one or more parameters associated with a minimum sector count setting as a minimum consecutive tag read parameter;
applying, to the reader, the one or more parameters associated with the minimum sector count setting;
determining whether a tag has moved from the first sector to the second sector based on the one or more parameters; and
transmitting an alarm signal in response to the tag moving from the first sector to the second sector or refraining from transmitting a false alarm signal in response to the tag not moving.

2. The method of claim 1 , wherein: receiving the one or more parameters comprises:
receiving a first value of a first minimum sector count associated with the first sector, and
receiving a second value of a second minimum sector count associated with the second sector;
applying the one or more parameters comprises:
setting the first minimum sector count to the first value, and
setting the second minimum sector count to the second value; and

determining whether the tag has moved comprises:
detecting the tag in the first sector based on acquiring a first plurality of tag reads indicating the tag is in the first sector, wherein a first number of the first plurality of tag reads is greater than or equal to the first minimum sector count, or
detecting the tag in the second sector based on acquiring a second plurality of tag reads indicating the tag is in the second sector, wherein a second number of the second plurality of tag reads is greater than or equal to the second minimum sector count.

3. The method of claim 1 , wherein the reader is an electro-magnetic (EM) reader, an acousto-magnetic (AM) reader, a radio frequency identification (RFID) reader, a microwave reader, or a quadrature resonance reader.

4. A non-transitory computer readable medium having instructions stored therein that, when executed by a processor, cause the processor to:
identify a first sector proximal to a reader and a second sector proximal to the reader;
receive one or more parameters associated with a minimum sector count setting as a minimum consecutive tag read parameter;
apply, to the reader, the one or more parameters associated with the minimum sector count setting;
determine whether a tag has moved from the first sector to the second sector based on the one or more parameters; and
transmit an alarm signal in response to the tag moving from the first sector to the second sector or refraining from transmitting a false alarm signal in response to the tag not moving.

5. The medium of claim 4 , wherein the instructions for receiving the one or more parameters comprises instructions for:
receiving a first value of a first minimum sector count associated with the first sector, and
receiving a second value of a second minimum sector count associated with the second sector;
the instructions for applying the one or more parameters comprises instructions for:
setting the first minimum sector count to the first value, and
setting the second minimum sector count to the second value; and

the instructions for determining whether a tag has moved comprises instructions for:
detecting the tag in the first sector based on acquiring a first plurality of tag reads indicating the tag is in the first sector, wherein a first number of the first plurality of tag reads is greater than or equal to the first minimum sector count, or
detecting the tag in the second sector based on acquiring a second plurality of tag reads indicating the tag is in the second sector, wherein a second number of the second plurality of tag reads is greater than or equal to the second minimum sector count.

6. The medium of claim 5 , wherein the first value is greater than or equal to 2 and the second value is greater than or equal to 2.

7. The medium of claim 4 , wherein the reader is an electro-magnetic (EM) reader, an acousto-magnetic (AM) reader, a radio frequency identification (RFID) reader, a microwave reader, or a quadrature resonance reader.

8. A reader for a tag, comprising:
a memory storing instructions; and
a processor communicatively coupled to the memory and configured to execute the instructions to:
identify a first sector proximal to the reader and a second sector proximal to the reader;
receive one or more parameters associated with a minimum sector count setting as a minimum consecutive tag read parameter;
apply, to the reader, the one or more parameters associated with the minimum sector count setting;
determine whether a tag has moved from the first sector to the second sector based on the one or more parameters; and
transmit an alarm signal in response to the tag moving from the first sector to the second sector or refraining from transmitting a false alarm signal in response to the tag not moving.

9. The reader of claim 8 , wherein: receiving the one or more parameters comprises:
receiving a first value of a first minimum sector count associated with the first sector, and
receiving a second value of a second minimum sector count associated with the second sector;
applying the one or more parameters comprises:
setting the first minimum sector count to the first value, and
setting the second minimum sector count to the second value; and

determining whether the tag has moved comprises:
detecting the tag in the first sector based on acquiring a first plurality of tag reads indicating the tag is in the first sector, wherein a first number of the first plurality of tag reads is greater than or equal to the first minimum sector count, or
detecting the tag in the second sector based on acquiring a second plurality of tag reads indicating the tag is in the second sector, wherein a second number of the second plurality of tag reads is greater than or equal to the second minimum sector count.

Assignees

• Sensormatic Electronics Llc

Inventors

• Colaluca Gregory
• Reich Eric
• Bola Lagarto Luis Tiago
• Costa Ribeiro Hugo Manuel
• Teixeira De Sousa João Carlos Veríssimo Costa
• Moura Bruno Miguel Rodrigues Costa
• Pinto De Oliveira Wilson Fernandes Carvalho
• Gundlach Chad M
• Saenz Yosbi Antonio Alves
• Soares Leandro André Azevedo

Classifications

• G08B13/2482 Primary

  EAS methods, e.g. description of flow chart of the detection procedure · CPC title

• G08B29/185

  Signal analysis techniques for reducing or preventing false alarms or for enhancing the reliability of the system · CPC title

• G08B13/2485

  Simultaneous detection of multiple EAS tags · CPC title

• G08B13/2462

  Asset location systems combined with EAS (inventory, tracking, logistic G06Q10/00; entrance control systems G07C9/00) · CPC title