RFID tagging system for network assets

• US 5,949,335 A
• Filed: 04/14/1998
• Issued: 09/07/1999
• Est. Priority Date: 04/14/1998
• 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: Maynard, William M.
• Primary Examiner(s): Mullen, Thomas
• Assistant Examiner(s): PHAM, TOAN NGOC
• Application Number:
  US09/059,937
• Time in Patent Office: 511 Days
• Field of Search: 340/572, 340/825.34, 340/568, 340/571, 340/825.3
• US Class Current: 340/572.1
• CPC Class Codes: G06F 21/88 Detecting or preventing theft or loss
• CPC Class Codes: G06K 17/0022 arrangements or provisious for transferring data to distant stations, e.g. from a sensing device "transfer between computer elements G06F13/00 "; data-transmission H04L
• CPC Class Codes: G08B 13/1418 Removal detected by failure in electrical connection between the appliance and a control centre, home control panel or a power supply

Abstract

A radio frequency identification (RFID) tagging system for computer network assets comprises: an RFID host; a transponder tag attached to an asset in a computer network, the tag having stored therein tag identifying data, inventory data describing the asset and security data; an electronically erasable and programmable memory (EEPROM) adapted for operation as part of the asset; an RFID reader/writer for reading data from the tag in an interrogation zone; respective communications links between the RFID host and each one of the RFID reader/writer and the asset, enabling the tag identifying data and the inventory or security data to be transferred between each of the RFID host, the EEPROM and the tag, the inventory data also being stored in the EEPROM; and, a control arrangement in the RFID host and in the asset for enabling operation of the asset only in response to a predetermined communications sequence between the RFID host and the asset over the respective communications link, whereby the asset can be identified in the interrogation zone for enabling only an authorized removal of the asset and whereby operation of the asset can be automatically inhibited absent completion of the predetermined communications sequence between the asset and the RFID host.

Claims

1. A radio frequency identification (RFID) tagging system for computer network assets, the system comprising:

an RFID host;

a transponder tag attached to an asset in a computer network, said transponder tag having stored therein tag identifying data and inventory data describing said asset;

an electronically erasable and programmable memory (EEPROM) adapted for operation as part of said asset;

an RFID reader/writer for reading data from said transponder tag in an interrogation zone;

respective communications links between said RFID host and each one of said RFID reader/writer and said asset, enabling said transponder tag identifying data and said inventory data to be transferred between each of said RFID host, said EEPROM and said transponder tag, said inventory data also being stored in said EEPROM; and

,

means in said RFID host and in said asset for enabling operation of said asset only in response to a predetermined communications sequence between said RFID host and said asset over said respective communications link,

whereby said asset can be identified in said interrogation zone for enabling only an authorized removal of said asset and whereby operation of said asset can be automatically inhibited absent completion of said predetermined communications sequence between said asset and said RFID host; and

wherein data changes in said asset can be communicated to said RFID host through whichever one of said RFID reader/writer and said network is available.

2. The system of claim 1, wherein said RFID host comprises:

means for receiving removal authorization data for said asset; and

,

means for modifying said data in said EEPROM for enabling operation of said asset absent said predetermined communications sequence between said asset and said RFID host.

3. The system of claim 1, further comprising means responsive to said transponder tag for initiating an alarm indicator when said asset is moved through said interrogation zone without removal authorization.

4. The system of claim 1, wherein said transponder tag has a first data storage area for data uniquely identifying said transponder tag, a second data storage area for data describing said asset and components within said asset, and a third data storage area for security data.

5. The system of claim 4, wherein said data describing said asset and components within said asset comprises at least one of the following:

model number data;

serial number data; and

,

date of manufacture data.

6. The system of claim 4, wherein said security data comprises at least one of the following:

removal authorization data; and

,

predetermined communications sequence completion data.

7. The system of claim 4, wherein said data uniquely identifying said transponder tag comprises at least one of the following:

manufacturing site code data; and

,

serial number data.

8. The system of claim 4, wherein at least one of said data storage areas provides permanent data storage and at least one other of said data storage areas provides erasable and writeable data storage.

9. The system of claim 1, wherein said asset further comprises means for transferring data directly between said transponder tag and said EEPROM, bypassing said RFID host.

10. The system of claim 1, comprising a plurality of said transponder tags respectively attached to a plurality of computer network assets.

11. The system of claim 10, wherein at least one of said assets comprises a computer work station on said network.

12. The system of claim 10, wherein said RFID host comprises a work station on said network.

13. The system of claim 1, wherein said respective communications links between said RFID host and each one of said RFID reader/writer and said asset are bidirectional communications links.

14. A secured computer network asset, comprising:

a computer network asset;

a radio frequency identification (RFID) transponder tag attached to said asset, said transponder tag having stored therein a first set of data uniquely identifying said transponder tag, a second set of data describing said asset and components within said asset and a third set of data representing security status of said asset;

an electronically erasable and programmable memory (EEPROM) adapted for operation as part of said asset; and

,

means for transferring said second and third sets of data between said transponder tag and said EEPROM.

15. The secured asset of claim 14, comprising means for communicating with an RFID host.

16. The secured asset of claim 15, wherein said means for transferring said second and third sets of data between said transponder tag and said EEPROM comprises a computer network.

17. The secured asset of claim 16, wherein said computer network comprises:

said secured asset;

said RFID host;

an RFID reader/writer for selectively writing data of said second and third sets to said transponder tag and for selectively reading data of said second and third sets from said transponder tag when said computer asset is in range of said RFID reader/writer; and

,

means for transferring data of said second and third sets between said RFID host and each of said EEPROM and said RFID reader/writer,

whereby said secured asset can be identified within said range of said RFID reader/writer for enabling only an authorized removal of said secured asset.

18. The secured asset of claim 17, further comprising means for enabling operation of said secured asset only in response to a predetermined communications sequence between said RFID host and said secured asset, whereby operation of said secured asset outside of said computer network can be automatically inhibited absent completion of said predetermined communications sequence.

19. A method for tagging computer network assets with radio frequency identification (RFID) transponders, the method comprising the steps of:

(A.) writing a first set of data onto a first storage area of a transponder tag with a first RFID reader/writer, said first set of data uniquely identifying said transponder tag and including at least one of the following;

manufacturing site code data; and

,

serial number data;

(B.) writing a second set of data onto a second storage area of said transponder tag with said first RFID reader/writer, said second set of data describing an asset and components within said asset and including at least one of the following;

model number data;

serial number data; and

,

date of manufacture data;

(C.) providing said transponder tag with a third storage area for a third set of data;

(D.) attaching said transponder tag to said asset; and

,

(E.) providing said asset with an electronically erasable and programmable memory (EEPROM) adapted for operation as part of said asset and capable of storing at least said second and third sets of data.

20. The method of claim 19, further comprising the steps of:

(F.) connecting said asset to a computer network;

(G.) connecting an RFID host to said computer network;

(H.) establishing an interrogation zone with a second RFID reader/writer;

(I.) connecting said second RFID reader/writer to said computer network;

(J.) establishing respective communications links between said RFID host and each one of said second RFID reader/writer and said asset;

(K.) transferring said second set of data from said transponder tag to said EEPROM; and

,

(L.) transferring data between said EEPROM and said transponder tag as said second set of data is updated to correspond to authorized modification of said asset.

21. The method of claim 20, further comprising the steps of:

(M.) enabling operation of said asset only in response to a predetermined communications sequence between said RFID host and said asset over said respective communications link;

(N.) identifying said asset when said asset is in said interrogation zone; and

,

(O.) writing removal authorization data into said third storage area of said transponder tag,

whereby said asset can be identified in said interrogation zone for enabling only an authorized removal of said asset, whereby operation of said asset can be automatically inhibited absent completion of said predetermined communications sequence between said asset and said RFID host, and whereby unauthorized modification of said asset can be detected.

22. A method for tagging computer network assets with radio frequency identification (RFID) transponders, the method comprising the steps of:

(A.) providing an asset in a computer network with an RFID transponder tag and an electronically erasable and programmable memory (EEPROM);

(B.) establishing a first data base in said transponder tag, said first data base including an inventory of said network asset and components within said asset and including removal authorization data;

(C.) establishing a second data base in said EEPROM, said second data base including said inventory of said network asset and components within said asset and including said removal authorization data; and

,

(D.) transferring data updates from each one of said transponder tag and said EEPROM to the other one of said transponder tag and said EEPROM,

whereby the integrity of said inventory data and said removal authorization can be interrogated, revised or otherwise acted upon by an RFID reader/writer.

23. The method of claim 22, further comprising the steps of:

(E.) connecting said RFID reader/writer to said computer network;

(F.) connecting an RFID host to said computer network;

(G.) establishing respective communications links between said RFID host and each one of said RFID reader/writer and said asset; and

,

(H.) implementing said transferring data step through said RFID host.

24. The method of claim 23, further comprising the steps of:

(I.) enabling operation of said asset only in response to a predetermined communications sequence between said RFID host and said asset over said respective communications link;

(J.) identifying said asset when said asset is in said interrogation zone; and

,

(K.) writing removal authorization data into said third storage area of said transponder tag,

whereby said asset can be identified in said interrogation zone for enabling only an authorized removal of said asset, whereby operation of said asset can be automatically inhibited absent completion of said predetermined communications sequence between said asset and said RFID host, and whereby unauthorized modification of said asset can be detected.

25. The method of claim 22, further comprising the steps of:

(E.) establishing a direct communications link in said asset between said transponder tag and said EEPROM; and

,

(F.) implementing said data transferring step over said direct communications link.

26. The method of claim 25, further comprising the steps of:

(G.) connecting said RFID reader/writer to said computer network; and

,

(H.) identifying said asset when said asset is in said interrogation zone,

whereby removal authorization status can be determined and said asset can be disabled by data written onto said transponder tag and transferred to said EEPROM over said direct communications link.

27. A radio frequency identification (RFID) tagging system for computer network assets, the system comprising:

an RFID host;

a transponder tag attached to an asset in a computer network, said transponder tag having stored therein tag identifying data and inventory data describing said asset;

an electronically erasable and programmable memory (EEPROM) adapted for operation as part of said asset;

an RFID reader/writer for reading data from said transponder tag in an interrogation zone;

respective communications links between said RFID host and each one of said RFID reader/writer and said asset, enabling said transponder tag identifying data and said inventory data to be transferred between each of said RFID host, said EEPROM and said transponder tag, said inventory data also being stored in said EEPROM;

means in said RFID host and in said asset for enabling operation of said asset only in response to a predetermined communications sequence between said RFID host and said asset over said respective communications link;

means for comparing said inventory data in said transponder tag and said inventory data in said EEPROM with one another; and

,

means for generating an output signal when said inventory data in said transponder tag and said inventory data in said EEPROM do not correspond to one another;

whereby said asset can be identified in said interrogation zone for enabling only an authorized removal of said asset and whereby operation of said asset can be automatically inhibited absent completion of said predetermined communications sequence between said asset and said RFID host.

28. A radio frequency identification (RFID) tagging system for computer network assets, the system comprising:

an RFID host;

a transponder tag attached to an asset in a computer network, said transponder tag having stored therein tag identifying data and inventory data describing said asset;

an electronically erasable and programmable memory (EEPROM) adapted for operation as part of said asset;

an RFID reader/writer for reading data from said transponder tag in an interrogation zone;

respective communications links between said RFID host and each one of said RFID reader/writer and said asset, enabling said transponder tag identifying data and said inventory data to be transferred between each of said RFID host, said EEPROM and said transponder tag, said inventory data also being stored in said EEPROM;

means in said RFID host and in said asset for enabling operation of said asset only in response to a predetermined communications sequence between said RFID host and said asset over said respective communications link; and

,

means for transferring data directly between said transponder tag and said EEPROM, bypassing said RFID host,

whereby said asset can be identified in said interrogation zone for enabling only an authorized removal of said asset and whereby operation of said asset can be automatically inhibited absent completion of said predetermined communications sequence between said asset and said RFID host.

29. A radio frequency identification (RFID) tagging system for computer network assets, the system comprising:

an RFID host;

a transponder tag attached to an asset in a computer network, said transponder tag having stored therein tag identifying data and inventory data describing said asset;

an electronically erasable and programmable memory (EEPROM) adapted for operation as part of said asset;

an RFID reader/writer for reading data from said transponder tag in an interrogation zone;

respective communications links between said RFID host and each one of said RFID reader/writer and said asset, enabling said transponder tag identifying data and said inventory data to be transferred between each of said RFID host, said EEPROM and said transponder tag, said inventory data also being stored in said EEPROM, wherein data changes in said asset can be communicated to said RFID host through whichever one of said RFID reader/writer and said network is available; and

,

means in said RFID host and in said asset for enabling operation of said asset only in response to a predetermined communications sequence between said RFID host and said asset over said respective communications link,

whereby said asset can be identified in said interrogation zone for enabling only an authorized removal of said asset and whereby operation of said asset can be automatically inhibited absent completion of said predetermined communications sequence between said asset and said RFID host.