Interrogation System Employing Prior Knowledge About an Object to Discern an Identity Thereof

• US 20090160605A1
• Filed: 03/02/2009
• Published: 06/25/2009
• Est. Priority Date: 09/29/2005
• Status: Active Grant

• Current Assignee: John P. Volpi, Logan Scott, Steven D. Roemerman
• Original Assignee: John P. Volpi, Logan Scott, Steven D. Roemerman
• Inventors: Volpi, John P., Roemerman, Steven D., Scott, Logan
• Granted Patent: US 9,135,669 B2
• Time in Patent Office: Days
• US Class Current: 340/5.800
• CPC Class Codes: G06Q 10/08 Logistics, e.g. warehousing, loading or distribution; Inventory or stock management
• CPC Class Codes: G06Q 10/087 Inventory or stock management, e.g. order filling, procurement or balancing against orders
• CPC Class Codes: G06Q 50/40 Business processes related to the transportation industry shipping G06Q10/083

Abstract

An interrogation system employable with an object having a radio frequency identification (RFID) tag and method of operating the same. In one embodiment, the interrogation system includes a database having prior knowledge about the object, and an interrogator that scans the RFID tag and discerns additional information therefrom about the object. The interrogator still further includes a control system that identifies the object based on the prior knowledge and the additional information.

Claims

1. An interrogation system employable with an object having a plurality of radio frequency identification (RFID) tags, comprising:

a database having prior knowledge about said object;

an interrogator configured to scan said plurality of RFID tags and discern additional information from at least one of said plurality of RFID tags about said object; and

a control system configured to identify said object based on said prior knowledge and said additional information.

2. The interrogation system as recited in claim 1 wherein said control system is configured to identify whether said object belongs with one or more accompanying objects having respective RFID tags.

3. The interrogation system as recited in claim 1 wherein said interrogator is configured to increase a sensitivity of said interrogation system.

4. The interrogation system as recited in claim 1 wherein said database is a relational database.

5. The interrogation system as recited in claim 1 wherein said interrogator includes a transmitter, a receiver and an autocorrelator.

6. The interrogation system as recited in claim 1 wherein at least one of said plurality of RFID tags employs at least one pseudorandom noise code or identification codes according to a tree structure.

7. The interrogation system as recited in claim 1 wherein said interrogator is configured to scan said plurality of RFID tags at a plurality of power levels.

8. The interrogation system as recited in claim 1 wherein said database, interrogator and control system are embodied in separate systems.

9. The interrogation system as recited in claim 1 wherein said interrogator is configured to discern said additional information from a portion of at least one of said plurality of RFID tags.

10. The interrogation system as recited in claim 1 wherein said control system is configured to process said additional information to identify another object with an RFID tag.

11. A method of operating an interrogation system employable with an object having a plurality of radio frequency identification (RFID) tags, comprising:

providing prior knowledge about said object;

scanning said plurality of RFID tags and discerning additional information from at least one of said plurality of RFID tags about said object; and

identifying said object based on said prior knowledge and said additional information.

12. The method as recited in claim 11 wherein identifying includes identifying whether said object belongs with one or more accompanying objects having respective RFID tags.

13. The method as recited in claim 11 wherein said scanning and said discerning increases a sensitivity of said interrogation system.

14. The method as recited in claim 11 wherein providing is performed by a relational database.

15. The method as recited in claim 11 further comprising performing an autocorrelation process to discern said additional information.

16. The method as recited in claim 11 wherein said at least one of said plurality of RFID tags employs at least one pseudorandom noise code or identification codes according to a tree structure.

17. The method as recited in claim 11 wherein said scanning said plurality of RFID tags is performed at a plurality of power levels.

18. The method as recited in claim 11 wherein said providing, said scanning and said discerning, and said identifying are performed in separate systems.

19. The method as recited in claim 11 wherein said discerning is discerned from a portion of at least one of said plurality of RFID tags.

20. The method as recited in claim 11 wherein said identifying processes said additional information to identify another object with an RFID tag.