Wireless transmitter key for EAS tag detacher unit

• US 5,942,978 A
• Filed: 07/15/1998
• Issued: 08/24/1999
• Est. Priority Date: 04/24/1998
• Status: Expired due to Term

• Current Assignee: Tyco Fire & Security GmbH (Johnson Controls International plc)
• Original Assignee: Sensormatic Electronics Corporation (Johnson Controls International plc)
• Inventors: Shafer, Gary Mark
• Primary Examiner(s): Lee, Benjamin C.
• Application Number:
  US09/115,821
• Time in Patent Office: 405 Days
• Field of Search: 340/572, 340/551, 340/568, 340/825.54, 340/572.1, 340/572.8, 340/572.9, 340/568.1, 70/57.1, 70/391, 70/416, 70/453, 70/454, 24/704.1, 24/704.2
• US Class Current: 340/572.9
• CPC Class Codes: E05B 73/0017 Anti-theft devices, e.g. tags or monitors, fixed to articles, e.g. clothes, and to be removed at the check-out of shops
• CPC Class Codes: E05B 73/0064 of the mechanical type
• CPC Class Codes: G07G 1/0054 with control of supplementary check-parameters, e.g. weight or number of articles
• CPC Class Codes: G08B 13/2448 Tag with at least dual detection means, e.g. combined inductive and ferromagnetic tags, dual frequencies within a single technology, tampering detection or signalling means on the tag
• CPC Class Codes: G08B 13/246 Check out systems combined with EAS, e.g. price information stored on EAS tag anti-theft systems in point of sale systems G07G3/003
• CPC Class Codes: Y10T 70/5004 For antitheft signaling device on protected article

Abstract

A device for removing reusable "hard" EAS tags from articles of merchandise is controlled so as to operate in response to identification data generated by an RFID element in the hard tag. A transmitter-key device is provided to selectively condition the detaching unit to operate in the absence of the otherwise required identification data. The transmitter-key device may also be used to turn the detaching unit on and off. Data indicative of the identity of the holder of the transmitter-key device may be stored in the detaching unit or an associated point-of-sale terminal to log detaching transactions authorized by the transmitter-key device.

Claims

1. Detacher apparatus for removing an EAS tag from an article of merchandise, the EAS tag comprising a first element and a second element, the first and second elements adapted for assembly together by snap connection through the article of merchandise, the EAS tag further comprising release means for selectively releasing said snap connection, the detacher apparatus comprising:

a housing;

removal means, in said housing, for selectively actuating said release means of the EAS tag to release said snap connection so that said first and second elements may be separated from each other to detach the EAS tag from the article of merchandise;

control means for selectively actuating said removal means, said control means being switchable between a first mode of operation and a second mode of operation, said control means operating in said first mode to actuate said removal means to actuate the release means of an EAS tag presented at said housing only in response to an identification signal generated by said EAS tag, said control means operating in said second mode to actuate said removal means to actuate the release means of an EAS tag presented at said housing in the absence of an identification signal generated by said EAS tag; and

means for receiving a conditioning signal for switching said control means from said first mode of operation to said second mode of operation.

2. Detacher apparatus according to claim 1, wherein said means for receiving includes an antenna in said housing.

3. Detacher apparatus according to claim 2, wherein said first element of said tag is a rigid label having a recessed hole, and said second element of said tag is a pin having a pointed member adapted to be engaged by said recessed hole, said first element having clamping means, associated with said release means, for releasably engaging said pointed member of said pin, said removal means including probe means for being inserted into an aperture in said rigid label for mechanically actuating said release means to cause said clamping means to release said pin.

4. Detacher apparatus according to claim 3, wherein said housing has a top surface and a nesting area in said top surface for receiving an EAS tag;

the apparatus further comprising a switch at said nesting area for being mechanically actuated by an EAS tag inserted into said nesting area, said switch for indicating to said control means the presence of said EAS tag inserted into said nesting area.

5. A method of operating an EAS tag detacher, the method comprising the steps of:

placing the detacher in a first mode of operation in which the detacher operates to separate snap-connected elements of an EAS tag only in response to an ID signal generated by the tag; and

transmitting a conditioning signal to the detacher to switch the detacher from said first mode of operation to a second mode of operation in which the detacher separates snap-connected elements of an EAS tag presented for separation in the absence of an ID signal generated by the tag.

6. A method according to claim 5, wherein said transmitting step includes transmitting said conditioning signal to the detacher via wireless communication from a transmitter-key device.

7. A method according to claim 6, wherein said transmitting step includes placing the transmitter-key device in a nesting area provided on the detacher.

8. An article identification system, comprising, in combination:

a plurality of reusable ID tags for being removably attached to articles to be identified, each of the ID tags including an identification element for transmitting identifying information via radio communication;

a detacher device for receiving the identifying information transmitted by the identification element of the ID tags and for selectively responding to the received identifying information by removing the ID tags from the articles; and

at least one transmitter-key device for transmitting a conditioning signal to the detacher device to place the detacher device in a mode of operation in which the detacher device removes an ID tag from a respective article in the absence of identifying information transmitted by the ID tag.

9. A system according to claim 8, wherein said ID tags and said at least one transmitter key device all have substantially the same external configuration.

10. A system according to claim 8, further comprising a detection device, positioned at an exit of controlled premises, for detecting unauthorized removal of ID tags from the controlled premises.

11. A system according to claim 10, wherein each of the ID tags includes a marker element separate from the respective identification element of the tag, said marker element for triggering the detection device to generate an alarm signal.

12. A system according to claim 8, wherein said at least one transmitter-key device includes a plurality of transmitter-key devices, each transmitting a respective conditioning signal which includes data for uniquely identifying the respective transmitter-key device;

the system further comprising logging means responsive to said conditioning signals for storing information indicative of each occasion when a respective transmitter-key device transmits its conditioning signal to the detacher device.

13. Detacher apparatus for removing an EAS tag from an article of merchandise, the EAS tag comprising a first element and a second element, the first and second elements adapted for assembly together by snap connection through the article of merchandise, the EAS tag further comprising release means for selectively releasing said snap connection, the detacher apparatus comprising:

a housing;

removal means, in said housing, for selectively actuating said release means of the EAS tag to release said snap connection so that said first and second elements may be separated from each other to detach the EAS tag from the article of merchandise;

control means for selectively actuating said removal means, said control means being switchable between a first mode of operation and a second mode of operation, said control means operating in said first mode to actuate said removal means to actuate the release means of an EAS tag presented at said housing only in response to a trigger signal generated by a device external to said detacher apparatus, said control means operating in said second mode to actuate said removal means to actuate the release means of an EAS tag presented at said housing in the absence of said trigger signal; and

means for receiving a conditioning signal for switching said control means from said first mode of operation to said second mode of operation.

14. Detacher apparatus according to claim 13, wherein said control means operates in said second mode to actuate said release means in response to actuation of a switch mounted on said housing.