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Method for processing transmitted and reflected signals for removing unwanted signals and noise from wanted signals

IPC분류정보
국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판)
  • G01S-013/82
출원번호 US-0690498 (1991-04-24)
발명자 / 주소
  • Kirknes Steffen (Innbygda N-7580 Selbu NOX)
인용정보 피인용 횟수 : 51  인용 특허 : 0

초록

In an identification system based on reflection of radar signals from a bit-coded transponder, the received signals are processed to remove unwanted signals and noise from the required, reflected and received signals that have a recurrent cycle. The reflected signals are extremely weak in relation t

대표청구항

A method in an identification system, wherein a radar signal is transmitted from a transmitter, said signal is arranged to be received by a mobile, bit-coded identification transponder which returns a coded signal that is received by a receiver; the received coded signals are processed in order to r

이 특허를 인용한 특허 (51)

  1. Jay Werb, Article tracking system.
  2. Werb Jay ; Lanzl Colin ; McKinney Kenelm, Article tracking system.
  3. Nysen, Paul A.; Skeie, Halvor, Backscatter transponder interrogation device.
  4. Wood, Jr.,Clifton W., Communication methods using slotted replies.
  5. Wood, Jr., Clifton W., Communications systems for radio frequency identification (RFID).
  6. 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.
  7. Nysen, Paul A., Dual mode transmitter-receiver and decoder for RF transponder tags.
  8. Nysen, Paul A., Dual mode transmitter-receiver and decoder for RF transponder tags.
  9. Nysen Paul A., Dual mode transmitter/receiver and decoder for RF transponder tags.
  10. Nysen, Paul A., Dual mode transmitter/receiver and decoder for RF transponder units.
  11. Tuttle, Mark E., Electronic communication devices, methods of forming electrical communication devices, and communications methods.
  12. Nysen Paul A., Frequency hopping spread spectrum passive acoustic wave identification device.
  13. Nysen Paul A., Frequency mixing passive transponder.
  14. Kanner, Abe; Seitz, Pat, Location of a transponder center point.
  15. Goldinger, James; Lanzl, Colin; Werb, Jay, Method and apparatus combining a tracking system and a wireless communication system.
  16. Wood, Jr., Clifton W., Method and apparatus for an arbitration scheme for radio frequency identification devices.
  17. Wood, Jr., Clifton W.; Hush, Don, Method and apparatus to manage RFID tags.
  18. Wood, Jr., Clifton W., Method and apparatus to select radio frequency identification devices in accordance with an arbitration scheme.
  19. Wood, Jr., Clifton W., Method of Addressing Messages and Communications System.
  20. Wood, Jr., Clifton W., Method of addressing messages and communications.
  21. Wood, Jr., Clifton W., Method of addressing messages and communications system.
  22. Wood, Jr., Clifton W., Method of addressing messages and communications system.
  23. Wood, Jr., Clifton W., Method of addressing messages and communications system.
  24. Wood, Jr.,Clifton W., Method of addressing messages and communications system.
  25. Wood, Jr., Clifton W., Method of addressing messages and communications systems.
  26. Wood, Jr., Clifton W., Method of addressing messages and communications systems.
  27. Wood, Jr., Clifton W.; Hush, Don, Method of addressing messages, method of establishing wireless communications and communications system.
  28. Wood, Jr., Clifton W.; Hush, Don, Method of addressing messages, method of establishing wireless communications, and communications system.
  29. Wood, Jr., Clifton W., Methods and apparatus for conducting financial transactions.
  30. Wood, Jr., Clifton W., Methods and apparatus for conducting financial transactions.
  31. Wood, Jr., Clifton W., Methods and apparatus for conducting financial transactions.
  32. Wood, Jr., Clifton W., Methods and apparatus for conducting financial transactions.
  33. Tuttle, John R, Methods and systems of receiving data payload of RFID tags.
  34. Wang, Jianqi; Jing, Xijing; Zhang, Yang; Lu, Hao; Li, Yanfeng; Li, Zhao; Jiao, Teng; Yu, Xiao, Multichannel UWB-based radar life detector and positioning method thereof.
  35. Moore, Scott E., RFID material tracking method and apparatus.
  36. Moore, Scott E., RFID material tracking method and apparatus.
  37. Moore, Scott E., RFID material tracking method and apparatus.
  38. Moore, Scott E., RFID material tracking method and apparatus.
  39. Kuzma, Peter J.; Eldering, Charles A., RFID tag filtering and monitoring.
  40. Kuzma,Peter J.; Eldering,Charles A., RFID tag filtering and monitoring.
  41. Kuzma,Peter J.; Eldering,Charles A., RFID tag filtering and monitoring.
  42. Tuttle, John R., Radio frequency identification device and method.
  43. Tuttle, John R., Radio frequency identification device and method.
  44. Kuzma,Peter J.; Eldering,Charles A.; Mauriel,Michael, Secondary card reader.
  45. Nysen,Paul A.; Skeie,Halvor, Surface acoustic wave modulator.
  46. Nysen Paul A., Surface acoustic wave transponder configuration.
  47. Nysen Paul A. ; Skeie Halvor, Surface acoustic wave transponder configuration.
  48. Tuttle, John R., System and method to track articles at a point of origin and at a point of destination using RFID.
  49. Tuttle, John R., Systems and methods for RFID tag arbitration where RFID tags generate multiple random numbers for different arbitration sessions.
  50. Tuttle, John R., Systems and methods for RFID tag arbitration where RFID tags generate multiple random numbers for different arbitration sessions.
  51. Epstein,Michael A., Using real random number generator as proof of time.
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