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Method of detecting relative direction of motion of a radio frequency (RF) tag 원문보기

IPC분류정보
국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판)
  • G08B-013/14
출원번호 US-0268422 (1999-03-13)
발명자 / 주소
  • Brady Michael J.
  • Martinez Rene D.
  • Moskowitz Paul A.
출원인 / 주소
  • Inkrmec IP Corp.
대리인 / 주소
    Hodgson
인용정보 피인용 횟수 : 80  인용 특허 : 14

초록

A method of determining relative motion between a base station and an RF Tag is disclosed, wherein a property of the RF field at the position of the tag is determined at a first time and at a second time and is used to calculate the relative motion.

대표청구항

[We claim:] [1.]a) determining a property of the RF field at the position of the tag at a first time t.sub.1 ;b) determining the property of the RF field at the position of the tag at a second time t.sub.2 ; andc) determining the relative motion between the tag and the base station.

이 특허에 인용된 특허 (14)

  1. Asama Hajime,JPX ; Kaetsu Hayato,JPX ; Kotosaka Shin-ya,JPX ; Endo Isao,JPX ; Miyao Sakae,JPX ; Nakamura Atsusi,JPX, Data carrier system.
    상세보기
  2. 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.
    상세보기
  3. Marsh Michael John Camille,ZAX ; Lenarcik Andrzej,ZAX ; Van Zyl Clinton Aiden,ZAX ; Van Schalkwyk Andries Christoffel,ZAX ; Oosthuizen Marthinus Jacobus Rudolph,ZAX, Detection of multiple articles.
    상세보기
  4. Close Leo R. (Sepulveda CA), Electronic surveillance system employing the doppler effect.
    상세보기
  5. Hendrick Peter L. (Los Alamos NM) Speirs Donald F. (San Juan NM) Wolf Michael A. (Los Alamos NM), High speed system for reading and writing data from and into remote tags.
    상세보기
  6. Heller Alan C. (3918 Forest Creek San Antonio (Bexar County) TX 78230), Location system adapted for use in multipath environments.
    상세보기
  7. Nysen Paul A. (223 Rainbow Street Randwick 2031 NSW AUX) Tobias Raphael (42 Melbourne Road East Lindfield ; 2070 NSW AUX), Passive universal communicator system.
    상세보기
  8. Heinrich Harley Kent ; Cesar Christian Lenz ; Cofino Thomas A. ; Friedman Daniel J. ; Goldman Kenneth Alan ; Greene Sharon Louise ; McAuliffe Kevin G, Radio frequency identification system with write broadcast capability.
    상세보기
  9. Belcher Donald K. ; Boyd Robert W. ; Wohl Michael A., Radio geo-location system with advanced first received wavefront arrival determination.
    상세보기
  10. Belcher Donald K. ; Eisenberg John A. ; Wisherd David S., Radio location system for precisely tracking objects by RF transceiver tags which randomly and repetitively emit wideba.
    상세보기
  11. Meier Herbert (Moosburg DEX) Sellmeir Martin (Neufinsing DEX), Read/write transponder arrangement and method of communication.
    상세보기
  12. Koelle Alfred R. (Santa Fe NM), Single antenna location and direction finding system.
    상세보기
  13. Meier Herbert (Moosburg DEX) Sellmeir Martin (Neufinsing DEX), Transponder arrangement.
    상세보기
  14. Bickley Robert H. (Scottsdale AZ) Keller Theodore W. (Scottsdale AZ) Bjornholt John (Mesa AZ), Transponding tag and method.
    상세보기

이 특허를 인용한 특허 (80)

  1. Wildman,Timothy D.; Collins, Jr.,Williams F.; Fleck,Thomas M.; Riley,Carl W.; Schuman,Richard J., Article locating and tracking apparatus and method.
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  3. Wildman,Timothy D., Article locating and tracking system.
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  4. 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.
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  5. Wahl, James; Nightingale, Chris, Body-worn mobile device.
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  6. Wahl, James; Nightingale, Chris, Body-worn mobile device.
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  7. Wahl, James; Nightingale, Chris, Body-worn mobile device.
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  8. Borders,Richard L.; Heimbrock,Richard H., Communication and data entry device.
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  9. Moshfeghi, Mehran, Determining the position of a mobile device using the characteristics of received signals and a reference database.
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  11. Moshfeghi, Mehran, Determining the position of a mobile device using the characteristics of received signals and a reference database.
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  12. Zampini Michael A. ; Taylor John W., Electronic article surveillance transmitter control using target range.
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  13. Tucker,Randall L.; Carroll,Gary T., Long range RFID transponder.
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  14. Tucker, Randall L.; Carroll, Gary T., Magnetostrictive / piezo remote power generation, battery and method.
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  15. Tucker, Randall L.; Carroll, Gary T., Magnetostrictive / piezo remote power generation, battery and method.
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  16. Tucker, Randall L.; Carroll, Gary T., Magnetostrictive / piezo remote power generation, battery and method.
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  17. Boldyrev, Sergey; Kaaja, Jari-Jukka Harald; Arponen, Jarmo Tapani; Oliver, Ian Justin; Mannermaa, Mika Juhani; Wilbur, Alex; Wegrzyn, Charles; Haikonen, Mikko Sakari; Guadagno, Antonio, Method and apparatus for performing a multi-role communication using a memory tag.
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  18. Wilkinson, Bruce W., Method and apparatus pertaining to installation of an RFID-tag reader system.
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  19. Wilkinson, Bruce W., Method and apparatus pertaining to use of multiple sessions with RFID tags.
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  20. Vargo, Rob; Zoschg, Ryan; Borgoyn, Edward Charles; Naughton, Mike, Method and system for correctly identifying specific RFID tags.
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  21. Vargo, Rob; Zoschg, Ryan; Borgoyn, Edward Charles; Naughton, Mike, Method and system for correctly identifying specific RFID tags.
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  22. Vargo, Rob; Zoschg, Ryan; Borgoyn, Edward Charles; Naughton, Mike, Method and system for correctly identifying specific RFID tags.
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  23. Vargo, Rob; Zoschg, Ryan; Borgoyn, Edward Charles; Naughton, Mike, Method and system for correctly identifying specific RFID tags.
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  24. Moshfeghi, Mehran, Method and system for determining the location of an electronic device using multi-tone frequency signals.
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  25. Moshfeghi, Mehran, Method and system for determining the location of an electronic device using multi-tone frequency signals.
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  26. Medve, Ildiko; Sai-Halasz, George, Method and system for locating a dependent.
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  27. Medve,Ildiko; Sai Halasz,George, Method and system for locating a dependent.
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  28. Medve,Ildiko; Sai Halasz,George, Method and system for locating a dependent.
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  29. Medve,Ildiko; Sai Halasz,George, Method and system for locating a dependent.
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  30. Harley Kent Heinrich ; Daniel J. Friedman, Method and system for storage and recovery of vital information on radio frequency transponders.
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  31. Heinrich,Harley Kent; Friedman,Daniel J., Method and system for storage and recovery of vital information on radio frequency transponders.
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  32. Nikitin, Pavel; Martinez, Rene; Ramamurthy, Shashi; Rao, Kvs, Method and system to determine the position, orientation, size, and movement of RFID tagged objects.
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  33. Carrender, Curt; Price, John M.; Nylander, Frederick A.; Rolin, John H.; Stewart, Roger G., Methods and apparatus for anti-collision for radio frequency communication.
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  34. Smith, John Stephen, Methods and apparatuses to identify devices.
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  36. Smith, John Stephen; Carrender, Curtis L., Methods and apparatuses to identify devices.
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  38. Smith, John Stephen; Carrender, Curtis L., Methods and apparatuses to identify devices.
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  39. Stewart, Roger G.; Smith, John Stephen, Methods and apparatuses to identify devices.
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  40. Stewart,Roger G.; Smith,John Stephen, Methods and apparatuses to identify devices.
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  41. Moshfeghi, Mehran, Methods and systems for determining the location of an electronic device using multi-tone frequency signals.
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  42. Ulrich, Richard, Multi-directional RFID reader for controlling inventory and shelf stock.
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  43. Uchiyama,Takuya; Sakurai,Satoshi; Yatsu,Nobuo; Endo,Norio, Non-contact IC card reader/writer device, non-contact IC card, input device, and method of calculating location of non-contact IC card.
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  44. Friedman, Mark B.; Casciola, Randall W., Patient positioning monitoring apparatus and method of use thereof.
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  45. Smith, John Stephen; Carrender, Curtis L., RFID Huffman encoded commands.
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  46. Smith, John Stephen; Carrender, Curtis L., RFID handshaking.
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  47. Shoarinejad, Kambiz; Soltan, Maryam; Moshfeghi, Mehran, RFID location systems and methods.
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  49. Mullins,Philip Kendal, RFID reader having antenna with directional attenuation panels for determining RFID tag location.
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  50. Foster, Robert F., RFID tags for locating products.
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  51. Tucker,Randall L., RFID transmitter for tires and method of manufacture.
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  52. Ghaffari, Touraj, Real time total asset visibility system.
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  60. Gravelle, Kelly; Landt, Jeremy; Lunsford, Patrick W., System and method for microwave ranging to a target in presence of clutter and multi-path effects.
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  61. Babbitt, Victor; Oliver, Andrew G.; Fine, Jeffrey W.; Ives, Daniel; Brand, Alexander D., Systems and methods for avian mitigation for wind farms.
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