Systems and methods for optical reading and EAS tag sensing and deactivating at retail checkout

• US 7,170,414 B2
• Filed: 05/11/2005
• Issued: 01/30/2007
• Est. Priority Date: 02/01/2002
• Status: Active Grant

• Current Assignee: Sensormatic Electronics LLC (Johnson Controls International plc)
• Original Assignee: PSC Scanning, Inc. (Datalogic ADC Incorporated), Sensormatic Electronics Corporation (Johnson Controls International plc)
• Inventors: Tabet, Nicolas N., Guess, Alan Jackson, Clifford, Harold C., Drew, Douglas Allen, Paris, Bruce E., Kortt, Robert F.
• Primary Examiner(s): PHAM, TOAN NGOC
• Application Number:
  US11/127,497
• Publication Number:
  US 20050219053A1
• Time in Patent Office: 629 Days
• Field of Search: 340/572.3, 340/572.1, 340/572.4, 340/572.8, 340/568.1, 340/571, 235/462.01, 235/462.32, 235/462.25, 235/462.43, 235/462.45, 235/462.49, 235/436
• US Class Current: 340/572.3
• CPC Class Codes: G07G 1/0045 with a code reader for reading of an identifying code of the article to be registered, e.g. barcode reader or radio-frequency identity [RFID] reader
• CPC Class Codes: G07G 1/0054 with control of supplementary check-parameters, e.g. weight or number of articles
• CPC Class Codes: G08B 13/2417 having a radio frequency identification chip
• CPC Class Codes: G08B 13/242 Tag deactivation
• 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

Abstract

Methods of operation of a data reader and security tag deactivation system whereby a data reader such as a barcode scanner is equipped with EAS deactivation coils or modules disposed in the vicinity of the read volume or generally proximate thereto and the system is operable to permit reading of the ID tag (such as the barcode label) on an item, and upon a successful read, the deactivation unit is operable to (1) sense the presence of an EAS tag; (2) if presence of an EAS tag is sensed, energize the deactivation coil/module to deactivate the EAS tag; and (3) sense if the EAS tag is deactivated. If the EAS tag is sensed to have been deactivated, the system signals as such and a next item may be scanned. If the EAS tag is sensed to have not been deactivated, the system proceeds to alternate operational steps to handle the exception. In another function, the system is operable to urge the operator to return the item to the read volume to enhance EAS tag deactivation, one method being by delaying a good read acknowledgment until the system determines that the EAS tag which may have been previously detected has subsequently been deactivated.

Claims

1. A method of operating a system comprised of a security tag deactivation unit and a data reader, the method comprising the steps of

passing an item through a read zone;

simultaneously attempting to read an encoded tag on the item and attempting to sense an electronic security tag on the item whether or not an encoded tag has first been read;

obtaining a valid read of item identification data from the encoded tag with the data reader;

attempting to deactivate the electronic security tag that has been sensed;

preventing reporting of a subsequent reading of an encoded tag of the same item identification data while attempting to deactivate the electronic security tag.

2. A method according to claim 1 wherein the step further comprising

starting a timer upon obtaining a valid read of item identification data;

preventing reporting of a subsequent reading of an encoded tag of the same item identification data unless the timer has expired;

if prior to expiration of the timer an electronic security tag is sensed, restarting the timer;

if prior to expiration of the timer an encoded tag of the same item identification data is read, restarting the timer.

3. A method according to claim 1 wherein the encoded tag is selected from the group consisting of:

an optical code label, an RFID tag.

4. A method of operating a system comprised of a security tag deactivation unit and a data reader, the method comprising the steps of

passing an item through a read zone;

simultaneously attempting to read an encoded tag on the item and attempting to sense an electronic security tag on the item whether or not an encoded tag has first been read;

obtaining a valid read of item identification data from the encoded tag with the data reader;

after a valid read has been obtained, arming the security tag deactivation unit and attempting to deactivate the electronic security tag that was previously sensed;

confirming deactivation by attempting to re-sense the electronic security tag that was previously sensed.

5. A method according to claim 4 further comprising

acknowledging a valid read if the electronic security tag is not re-sensed within a given period.

6. A method according to claim 4 wherein the electronic security tag is selected from the group consisting of:

magnetoacoustic, magnetomechanical, magnetostrictive, RF-based tags, microwave, and harmonic type tags.

7. A method for verifying successful deactivation of an EAS tag at a checkout station comprising:

(a) attempting to read an encoded tag on an article in a read volume;

(b) attempting to sense an EAS tag on an article in a detection volume;

(c) upon a valid read of the encoded tag, arming an EAS deactivator;

(d) upon being armed and upon having sensed an EAS tag, the EAS deactivator attempting to deactivate the EAS tag;

(e) upon attempting to deactivate the EAS tag at step (d), determining whether the EAS tag has been deactivated by attempting to re-sense the EAS tag;

(f) if at step (e) the EAS tag is re-sensed, preventing or delaying the indication of a valid read at step (c).

8. A method according to Claim 7 further comprising

(g) if at step (e) the EAS tag is re-sensed, notifying a store operator that the EAS tag has not been deactivated.

9. A method according to claim 8 further comprising

(h) allowing the store operator to override at step (f) and allow indication of valid read.

10. A method according to claim 8 wherein the step of notifying comprises an audible alert.

11. A method according to claim 8 wherein the step of notifying comprises an visible indicator.

12. A method according to claim 7 wherein the steps of (a) attempting to read an encoded tag and (b) attempting to sense an EAS tag occur simultaneously.

13. A method according to claim 7 wherein the step of (b) attempting to sense an EAS tag occurs only after an encoded tag has been read.

14. A method according to claim 7 wherein EAS tag may be sensed prior to the step of attempting to read an encoded tag.

15. A method according to claim 7 wherein the encoded tag is selected from the group consisting of:

an optical code label, an RFID tag.

16. A method according to claim 7 wherein the detection volume is at least partially coextensive with the read volume.

17. A method according to claim 7 wherein the desired action comprises returning the article to a deactivation field.

18. A method according to claim 7 further comprising

(f) if an EAS tag has been sensed but not deactivated, repeating step (e) a given number of attempts.

19. A method for verifying successful deactivation of an EAS tag at a checkout station comprising:

(a) attempting to read, with a data reader, an encoded tag on an article;

(b) attempting to sense an EAS tag on an article in a detection field;

(c) upon a valid read of the encoded tag, arming an EAS deactivator;

(d) upon being armed and upon having sensed an EAS tag, the EAS deactivator attempting to deactivate the EAS tag;

(e) upon attempting to deactivate the EAS tag, determining whether the EAS tag has been deactivated, and if an EAS tag has been sensed but not deactivated, notifying the operator to take a desired action.