Automated real-time distributed tag reader network
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
G06Q-010/00
G08B-005/22
G08B-013/14
H04Q-005/22
출원번호
UP-0496960
(2000-02-03)
등록번호
US-7844505
(2011-01-31)
발명자
/ 주소
Arneson, Michael R.
Bandy, William R.
출원인 / 주소
Symbol Technologies, Inc.
대리인 / 주소
DiVita, Bartholomew
인용정보
피인용 횟수 :
43인용 특허 :
83
초록▼
A method and system for conducting an inventory of items by a network tag reader, wherein a tag is attached to each item and each tag is permanently assigned a tag identification number (Tag ID). A method according to the present invention includes selecting one of a plurality of remote access senso
A method and system for conducting an inventory of items by a network tag reader, wherein a tag is attached to each item and each tag is permanently assigned a tag identification number (Tag ID). A method according to the present invention includes selecting one of a plurality of remote access sensor modules, where the selected remote access sensor module has a coverage pattern that defines a physical area. The method also includes interrogating tags through the selected remote access sensor module. These tags are within the physical area defined by the coverage pattern. As a result of the interrogating step, the network tag reader receives information regarding these tags. This information is stored in a plurality of inventory records.
대표청구항▼
What is claimed is: 1. A method of conducting a wireless inventory of items using a network tag reader and tags, wherein a unique tag is attached to each item and each tag is permanently assigned a tag identification number (Tag ID), the method comprising the steps of: selecting one of a plurality
What is claimed is: 1. A method of conducting a wireless inventory of items using a network tag reader and tags, wherein a unique tag is attached to each item and each tag is permanently assigned a tag identification number (Tag ID), the method comprising the steps of: selecting one of a plurality of remote access sensor modules, which communicate wirelessly with the items, wherein the selected remote access sensor module comprises a coverage pattern that defines a physical area containing a plurality of items with their associated tags; interrogating the tags in a defined physical area through the corresponding selected remote access sensor module, thereby receiving information from the tags in the defined physical area; storing the information received in the interrogating step in an inventory database; repeating the selecting, interrogating, and storing steps for each remote access sensor module; and after the selecting, interrogating, and storing steps are performed for each remote access sensor module, processing the information in the inventory database, wherein the interrogating step comprises the steps of: at the network tag reader, transmitting through the selected remote access sensor module a wake-up signal followed by a first clock signal; at each tag within the physical area defined by the coverage pattern of the selected remote access sensor module, incrementing a first tag count in response to the first clock signal, and transmitting the Tag ID assigned to each tag when the Tag ID of each tag corresponds to the first tag count; at the network tag reader, incrementing a first reader count in response to the first clock signal, storing a given first reader count when more than one tag responds to the first clock signal that corresponds to the given first reader count, and transmitting through the selected remote access sensor module the given first reader count followed by a second clock signal; and at each tag that responds to the transmitted given first reader count, incrementing a second tag count in response to the second clock signal, and transmitting a second number assigned to each tag when the second number of each tag corresponds to the second count. 2. The method of claim 1, wherein the information received in the interrogating step comprises at least one Tag ID, each Tag ID corresponding to a tag within the physical area defined by the coverage pattern. 3. The method of claim 2, further comprising the step of repeating the selecting, interrogating, storing, repeating, and processing steps. 4. The method of claim 3, wherein the storing step comprises the step of: if a particular Tag ID received during an initial performance of the interrogating step has not been received during a subsequent performance of the interrogating step within a predetermined time period, storing information in the inventory database that indicates a tag corresponding to the particular Tag ID is missing. 5. The method of claim 4, wherein the processing step comprises the step of initiating a security action when the particular Tag ID is missing. 6. The method of claim 5, wherein the security action comprises at least one of turning on a surveillance camera or activating a silent alarm. 7. The method of claim 2, wherein the processing step comprises the step of correlating a remote access sensor module identity with each Tag ID received in the interrogating step to maintain data regarding the location of each tag corresponding to a Tag ID. 8. The method of claim 1, wherein the information received in the interrogating step comprises sensor information originated by a sensor associated with a tag within the physical area defined by the coverage pattern. 9. The method of claim 8, wherein the sensor information indicates at lease one of tag movement, vibration, or temperature. 10. The method of claim 1, wherein the network tag reader is connected to each of the plurality of remote access sensor modules through an electrical power distribution system. 11. The method of claim 1, further including the step of performing multiple reads of the tags by the network tag reader to avoid time slot contention, wherein the tag identification number includes a plurality of bits, wherein a tag responds to the network tag reader with a first plurality of the plurality of bits during a first read and a second plurality of the plurality of bits during a second read. 12. A method of conducting a wireless inventory of items in a distributed tag reader network, wherein a tag is attached to each item, and wherein each tag is assigned a plurality of identification numbers, the method comprising the steps of: selecting at least one remote access sensor module from a plurality of remote access sensor modules in the distributed tag reader network, wherein each remote access sensor module communicates wirelessly with the tags, and each remote access sensor module has a coverage pattern that defines a physical area; transmitting, through the at least one selected remote access sensor module, an interrogation signal to one or more tags, wherein the one or more tags are within the physical area defined by the coverage pattern of the at least one selected remote access sensor, and wherein each tag is configured to receive the interrogation signal, evaluate one or more of its plurality of identification numbers, and reply to the interrogation signal, if appropriate; resolving contention between multiple tags that responded to the interrogation signal, if appropriate; identifying which tags are within the coverage area of the at least one selected remote access module; and maintaining a record of each tag that was identified. 13. The method of claim 12, wherein each reply received comprises at least one of the identification numbers assigned to the tag that responded to the interrogation signal. 14. The method of claim 13, further comprising the step of associating the at least one of the identification numbers assigned to the tag that responded to the interrogation signal with at least one of the selected remote access sensors to maintain data regarding a location of the tag. 15. The method of claim 12 further comprising the step of repeating the steps of selecting, transmitting, resolving, identifying, and maintaining for each remote access sensor module in the distributed tag reader network. 16. The method of claim 15, wherein each reply received comprises at least one of the identification numbers assigned to the tag that responded to the interrogation signal, and further comprising, if a particular identification number received in response to an initial performance of the transmitting step has not been received during a subsequent performance of the transmitting step within a predetermined time period, storing information that indicates a tag corresponding to the particular identification number is missing. 17. The method of claim 16, further comprising initiating a security action when the tag corresponding to the particular identification number is missing. 18. The method of claim 17, wherein the security action comprises turning on a surveillance camera or activating a silent alarm. 19. The method of claim 12, wherein each reply received comprises sensor information originated by a sensor associated with the tag that responded to the interrogation signal. 20. The method of claim 19, wherein the sensor information indicates at least one of the following: tag movement, tag vibration, or tag temperature. 21. The method of claim 19, further comprising analyzing the sensor information for a condition that indicates a security breach. 22. The method of claim 21, wherein the condition that indicates a security breach comprises a temperature fluctuation, a movement or a sudden vibration. 23. The method of claim 12, wherein the coverage patterns of each of the plurality of remote access sensor modules are physically isolated from each other. 24. The method of claim 12, wherein at least two of the coverage patterns of the plurality of remote access sensor modules overlap each other. 25. The method of claim 12, wherein the step of resolving contention comprises performing multiple reads on the multiple tags that responded to the interrogation signal in a same time slot by transmitting at least a second interrogation signal to the multiple tags that responded to the interrogation signal in a same time slot, wherein at least one identification number assigned to a tag includes a plurality of bits, and wherein the multiple tags that responded to the interrogation signal in the same time slot responded to the interrogation signal with a first plurality of the plurality of bits during a first read, and will respond to the second interrogation signal with a second plurality of the plurality of bits during a second read. 26. A distributed tag reader network used to conduct a wireless inventory of items, wherein a tag is attached to each item, and wherein each tag is assigned a plurality of identification numbers, and each tag is configured to receive and transmit signals, the distributed tag reader network comprising: a network reader, comprising a database; and a plurality of remote access sensor modules coupled to the network reader, wherein each remote access sensor module has a coverage pattern that defines a physical area, and communicates wirelessly with the tags, wherein the network reader selects at least one remote access sensor module from the plurality of remote access sensor modules in the distributed tag reader network; and transmits, through the at least one selected remote access sensor module, an interrogation signal to one or more tags, wherein the one or more tags are within the physical area defined by the coverage pattern of the at least one selected remote access sensor, and wherein each tag is configured to receive the interrogation signal, evaluate one or more of its plurality of identification numbers, and reply to the interrogation signal, if appropriate; wherein the network reader or the at least one selected remote access sensor module resolves contention between multiple tags that responded to the interrogation signal; and identifies which tags are within the coverage area of the selected remote access module; and wherein the network reader maintains a record of each tag that was identified in its database. 27. The distributed tag reader network of claim 26 further comprising a computer system coupled to the network reader, and wherein the network reader selects at least one remote access sensor module from a plurality of remote access sensor modules in the distributed tag reader network in response to an instruction received from the computer system. 28. The distributed tag reader network of claim 26 further comprising a computer system coupled to the network reader on a permanent basis via a wired connection. 29. The distributed tag reader network of claim 26 further comprising a computer system coupled to the network reader on an intermittent basis via a wireless connection. 30. The distributed tag reader network of claim 26 further comprising a computer system, wherein the network reader is a Personal Computer Memory Card International Association (PCMCIA) card that fits into a PCMCIA card slot on the computer system. 31. The distributed tag reader network of claim 29 wherein the computer system is a portable device. 32. The distributed tag reader network of claim 26 further comprising a computer system, coupled to the network reader, that is capable of controlling the performance of the network reader. 33. The distributed tag reader network of claim 26 further comprising a computer system coupled to the network reader, and wherein the computer system is a desktop computer, a workstation, a personal digital assistant, dedicated hardware, dedicated firmware or dedicated software. 34. The distributed tag reader network of claim 26 further comprising a sensor information module, coupled to the network reader and to the plurality of remote access sensor modules, configured to facilitate an exchange of information between the reader network, the plurality of remote access sensor modules and the plurality of tags. 35. The distributed tag reader network of claim 26, wherein the network tag reader is connected to each of the plurality of remote access sensor modules through an electrical power distribution system. 36. The distributed tag reader network of claim 26, wherein at least one of the remote access sensor modules is a Personal Computer Memory Card International Association (PCMCIA) card. 37. The distributed tag reader network of claim 26, wherein at least one of the remote access sensor modules attaches to an electrical lighting fixture.
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이 특허에 인용된 특허 (83)
Watanabe Atsushi (Toyokawa JPX) Hirata Tatsuya (Ichinomiya JPX), Aircraft baggage managing system utilizing a response circuit provided on a baggage tag.
Marsh Michael J. C. (Johannesburg ZAX) Carson Mark H. (Pretoria ZAX) Gouws Gideon J. (Pretoria ZAX) Marais Mario A. (Pretoria ZAX) Hodson Trevor M. (Randburg ZAX), Attaching an electronic circuit to a substrate.
Reis Robert Steven (Palo Alto CA) Verma Vikram (Palo Alto CA) Mihovilovic Domingo Antonio (Mountain View CA) Bertrand Peter Scott (Palo Alto CA) Stevens Richard Kenneth (Cupertino CA), Communication system for communicating with tags.
Reis Robert Steven (Palo Alto CA) Verma Vikram (Palo Alto CA) Mihovilovic Domingo Antonio (Mountain View CA) Bertrand Peter Scott (Palo Alto CA) Stevens Richard Kenneth (Cupertino CA), Communication system for communicating with tags.
Kobayashi Nakaba (Kariya JPX) Nagura Michinaga (Kariya JPX) Toyama Kazumasa (Nagoya JPX), Communication system which establishes communication sessions based on unit ID codes to avoid transmission conflicts.
Snodgrass Charles K. (Boise ID) Allen David H. (Rochester MN) Tuttle John R. (Boise ID) Rotzoll Robert R. (Boise ID) Pax George E. (Boise ID), Data communication method using identification protocol.
Snodgrass Charles K. (Boise ID) Allen David H. (Rochester MN) Tuttle John R. (Boise ID) Rotzoll Robert R. (Boise ID) Pax George E. (Boise ID), Data communication method using identification protocol.
Snodgrass Charles K. (Boise ID) Allen David H. (Rochester MN) Tuttle John R. (Boise ID) Rotzoll Robert R. (Boise ID) Pax George E. (Boise ID), Data communication system using identification protocol.
Snodgrass Charles K. (Boise ID) Allen David H. (Rochester MN) Tuttle John R. (Boise ID) Rotzoll Robert R. (Boise ID) Pax George E. (Boise ID), Data communication transceiver using identification protocol.
Theimer Marvin M. (Mountain View CA) Want Roy (Mountain View CA), Decentralized tracking and routing system wherein packages are associated with active tags.
Marsh Michael J. C. (Johannesburg ZAX) Lenarcik Andrzej (Johannesburg ZAX) Van Zyl Clinton A. (Pretoria ZAX) Van Schalkwyk Andries C. (Pretoria ZAX) Oosthuizen Marthinus J. R. (Pretoria ZAX), Detection of multiple articles.
Tervoert Marius L. (Borculo NLX) Venema Willem H. J. (Enschede NLX) Scholten Arjan H. (Enschede NLX) Stekelenburg Jan C. (Varsseveld NLX), Electromagnetic identification system for identifying a plurality of coded responders simultaneously present in an inter.
Caswell Robert L. (207 Laurelwood Ave. Placentia CA 92670) Bass C. David (17806 Joshua Cir. Fountain Valley CA 92708), Inventory management system using transponders associated with specific products.
Ekchian Jack A. (Watertown MA) Hoffman Robert W. (Arlington MA) Ekchian Leon (Woodland Hills CA) Gabriel Kaigham J. (Belmont MA), Item identification tag for rapid inventory data acquisition system.
Sims Nathaniel M. (Wellesley Hills MA) Turner John M. (Lake Forest IL) Zeisloft Jane M. (Barrington IL) Kusswurm Daniel C. (Geneva IL) LaBedz Ralph H. (McHenry IL), Managing an inventory of devices.
Strietzel Rainer (Heidelberg DEX), Method and apparatus for generating an equipment reply signal for the automatic identification of objects and/or living.
Verma Vikram (Palo Alto CA) Reis Robert S. (Palo Alto CA) Mihovilovic Domingo A. (Mountain View CA) Keleshian Philip J. (San Jose CA), Method and apparatus for locating items.
Tuttle John R. (Corrales NM) Hoyt Eugene P. (Colorado Springs CO) Springett James C. (La Crescenta CA), Modulated spread spectrum in RF identification systems method.
Chan Shun S. (Flushing NY) Heinrich Harley K. (Brewster NY) Kandlur Dilip D. (Briarcliff Manor NY) Krishna Arvind (Briarcliff Manor NY), Multiple item radio frequency tag identification protocol.
Tompkins Eugene (1016 E. Warren Detroit MI 48224) Hayes William (24150 Inkster Rd. Southfield MI 48034), Nationwide airport luggage tracking system and method.
Hook Christopher (Reading GB2) Juson Keith (Malmesburg GB2) Hall Chris (London GB2) Ferguson Donald Harold (Maple CAX) Paun Dimitrie Octavian (Mississauga CAX) Oprea Alexandru (Willowdale CAX), Passive transponder.
Simon William F. (235 W. Fairbault Duluth MN 55803) Torrey William C. (801 Seventh Ave. ; E. Superior WI 54880) Hull Chris W. (1096 85th Ave. ; W. Duluth MN 55808), Personnel locator.
Carney Scott N. (Palatine IL) Lauro George L. (San Jose CA) Krenz Eric L. (Crystal Lake IL) Ghaem Sanjar (Palatine IL), RF tagging system including RF tags with variable frequency resonant circuits.
Bowers John H. ; Clare Thomas J., RFID tags which are virtually activated and/or deactivated and apparatus and methods of using same in an electronic security system.
Moskowitz Paul A. (Yorktown Heights NY) Brady Michael J. (Brewster NY) Coteus Paul W. (Yorktown Heights NY), Radio frequency circuit and memory in thin flexible package.
O'Toole James E. ; Tuttle John R. ; Tuttle Mark E. ; Lowrey Tyler ; Devereaux Kevin M. ; Pax George E. ; Higgins Brian P. ; Ovard David K. ; Yu Shu-Sun ; Rotzoll Robert R., Radio frequency data communications device.
O'Toole James E. ; Tuttle John R. ; Tuttle Mark E. ; Lowrey Tyler ; Devereaux Kevin M. ; Pax George E. ; Higgins Brian P. ; Ovard David K. ; Yu Shu-Sun ; Rotzoll Robert R., Radio frequency data communications device.
Dieska David E. ; Friedman Daniel Joseph ; Goldman Kenneth Alan ; Heinrich Harley Kent, Single chip RF tag oscillator circuit synchronized by base station modulation frequency.
Smith Gregory M. (Colorado Springs CO), System and method for initiating communications between a controller and a selected subset of multiple transponders in a.
Cesar Christian Lenz (Shrub Oak NY) Chan Shun Shing (Flushing NY) Cofino Thomas Anthony (Rye NY) Goldman Kenneth Alan (Norwalk CT) Greene Sharon L. (Mt. Kisco NY) Heinrich Harley Kent (Brewster NY) M, System and method for radio frequency tag group select.
Cresap Michael S. (1294 Dorothy Rd. Crownsville MD 21032) Plant ; Jr. Edward G. (7892 Americana Cir. Apt. 201 Glen Burnie MD 21060), Tag tansponder system and method to identify items for purposes such as locating, identifying, counting, inventorying, o.
Welles ; II Kenneth Brakeley (Scotia NY) Hershey John Erik (Ballston Lake NY), Use of mutter mode in asset tracking for gathering data from cargo sensors.
Griesmann, Daniel S; Ekl, Randy L; Jain, Binit, Arrangement for and method of optimally adjusting the scan rate of scan beams generated bya radio frequency identification (RFID) tag reader having an array of antennas.
Dixon, Steven Alan; Huster, Keith A.; Hood, Michael S.; Allen, James Maurice; Christie, John D.; Sing, Jack Barney; Tallent, Dan R.; Owsley, Clay Gerome; Rajani, Umesh Jairamdas; Heil, Thomas F.; Schuman, Sr., Richard Joseph; Wildman, Timothy D., Bed/room/patient association systems and methods.
Steinbrunner, Cole; Mallak, Thomas L.; Meiring, Donald T.; Walton, Daniel D.; Sherman, Nicholas J.; Grannan, James Michael, Diagnostic tag for an industrial vehicle tag reader.
Hyde, Roderick A.; Jung, Edward K. Y.; Kare, Jordin T.; Levien, Royce A.; Lord, Robert W.; Malamud, Mark A.; Rinaldo, Jr., John D.; Sweeney, Elizabeth A.; Wood, Jr., Lowell L., Distillation of status data relating to regimen compliance responsive to the presence and absence of wireless signals relating to one or more threshold frequencies.
Ling, Curtis; Gallagher, Timothy, Method and system for broadband near-field communication (BNC) utilizing full spectrum capture (FSC) supporting concurrent charging and communication.
Ling, Curtis; Gallagher, Timothy, Method and system for broadband near-field communication (BNC) utilizing full spectrum capture (FSC) supporting concurrent charging and communication.
Kovacic, Kosta; Kunc, Vinko; Pletersek, Anton, Method for an acquisition of data from external digital sensors with an RFID smart tag and a tag integrated circuit for carrying out said method.
Hyde, Roderick A.; Jung, Edward K. Y.; Kare, Jordin T.; Levien, Royce A.; Lord, Robert W.; Malamud, Mark A.; Rinaldo, Jr., John D.; Sweeney, Elizabeth A.; Wood, Jr., Lowell L., Systematic distillation of status data relating to regimen compliance.
Hyde, Roderick A.; Jung, Edward K. Y.; Kare, Jordin T.; Levien, Royce A.; Lord, Robert W.; Malamud, Mark A.; Rinaldo, Jr., John D.; Sweeney, Elizabeth A.; Wood, Jr., Lowell L., Systematic distillation of status data relating to regimen compliance.
Hyde, Roderick A.; Jung, Edward K. Y.; Kare, Jordin T.; Levien, Royce A.; Lord, Robert W.; Malamud, Mark A.; Rinaldo, Jr., John D.; Sweeney, Elizabeth A.; Wood, Jr., Lowell L., Systematic distillation of status data relating to regimen compliance.
Hyde, Roderick A.; Jung, Edward K. Y.; Kare, Jordin T.; Levien, Royce A.; Lord, Robert W.; Malamud, Mark A.; Rinaldo, Jr., John D.; Sweeney, Elizabeth A.; Wood, Jr., Lowell L., Systematic distillation of status data responsive to whether or not a wireless signal has been received and relating to regimen compliance.
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