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Method and apparatus for determining time for GPS receivers 원문보기

IPC분류정보
국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판)
  • H04B-071/85
  • G01S-005/02
출원번호 US-0845545 (1997-04-24)
발명자 / 주소
  • Krasner Norman F.
출원인 / 주소
  • SnapTrack, Inc.
대리인 / 주소
    Blakely,Sokoloff, Taylor & Zafman
인용정보 피인용 횟수 : 413  인용 특허 : 22

초록 ▼

A method and apparatus of determining the time for a global positioning system receiver is disclosed. Timing signals derived from a communication system, such as cellular phone transmission signals, are received by a GPS receiver and decoded to provide accurate time information. The timing signals m

대표청구항 ▼

[ What is claimed is:] [1.] A method for determining a position of a mobile global positioning system receiver, said mobile global positioning system receiver receiving global positioning system signals from at least one of a plurality of global positioning system (GPS) satellites, said method compr

이 특허에 인용된 특허 (22)

  1. Janky James M. (Los Altos CA) Schipper John F. (Palo Alto CA), Accurate time standard for vehicle operation.
    상세보기
  2. Borkowski Daniel G. (Acton MA) Fung Hingsum F. (Needham MA) Habal Hadi F. (Lexington MA) Chao Kenneth (Lexington MA) Kai Sheng-roan (Chelmsford MA) Packard ; II Robert D. (Acton MA), Cellular network-based location system.
    상세보기
  3. Gildea David R. (Menlo Park CA), Differential GPS smart antenna device.
    상세보기
  4. Eshenbach Ralph F. (Woodside CA), GPS receiver using a radio signal for improving time to first fix.
    상세보기
  5. Brown Alison K. (Monument CO) Sturza Mark A. (Woodland Hills CA), GPS tracking system.
    상세보기
  6. Cantwell Robert H. (Sudbury MA), Global system positioning receiver.
    상세보기
  7. Schuchman Leonard (Potomac MD) Bruno Ronald (Arlington VA) Rennard Robert (San Martin CA) Moses Charles (Catonsville MD), Hybrid GPS/data line unit for rapid, precise, and robust position determination.
    상세보기
  8. Maine Kristine P. (Phoenix AZ) Olds Keith A. (Mesa AZ) Attwood Stanley W. (Sun Lakes AZ), Location system and method with acquisition of accurate location parameters.
    상세보기
  9. Grell Conrad ; Guralnick Jeremy ; Rothmuller Ilan J. ; Bennett Chris ; Theiss-Aird Michael, Method and apparatus for determining location of a subscriber device in a wireless cellular communications system.
    상세보기
  10. Bulgier Lawrence W. (West Suffield CT), Method and apparatus for measuring elapsed time between an initiating event and a dependent event.
    상세보기
  11. Cisneros Joseph S. ; Kelley David C. ; Kiang Michael ; Greenbaum Louis A., Navigation and positioning system and method using uncoordinated beacon signals in conjunction with an absolute position.
    상세보기
  12. Taylor Ralph E. (Silver Spring MD) Sennott James W. (Bloomington IL), Navigation system and method.
    상세보기
  13. Grobert Paul H. (Granada Hills CA), Null processing and beam steering receiver apparatus and method.
    상세보기
  14. Grobert Paul H. (Granada Hills CA), Null processing receiver apparatus and method.
    상세보기
  15. Kennedy Joseph P. (Fairfax VA) Roller Christopher D. (Burke VA) Hooper Robert W. (Arlington VA), Passive high accuracy geolocation system and method.
    상세보기
  16. Attwood Stanley W. (Sun Lakes AZ), Position ambiguity resolution.
    상세보기
  17. Desai Simon (San Jose CA) MacKnight James G. (Morgan Hill CA), Precise universal time for vehicles.
    상세보기
  18. Abraham Charles (Cupertino CA) Janky James M. (Los Altos CA), Provision of SPS timing signals.
    상세보기
  19. Fitzgerald Brendan T. (Indialantic FL) Powshok Andrew T. (Indian Harbour Beach FL) Belcher Donald K. (Rogersville TN) White Jeffrey R. (Melbourne Village FL) Darby ; Jr. Albert D. (Valkaria FL) Nelso, Technique for determining propagating and clear frequency to be used in wide area wireless data communications network.
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  20. Loomis Peter V. W. (Sunnyvale CA), Time transfer system.
    상세보기
  21. Barnard Michael E. (Reigate GB2), Vehicle location system.
    상세보기
  22. Brown Alison K. (Monument CO) Sturza Mark A. (Woodland Hills CA), Vehicle tracking system employing global positioning system (GPS) satellites.
    상세보기

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  161. Haney, Richard D., Location sharing group map management.
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  200. McConnell, Richard Joseph, Method and apparatus for optimally tuning a circularly polarized patch antenna after installation.
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  201. Goldberg, Jason; Abraham, Charles; Tapucu, Emre, Method and apparatus for performing frequency synchronization.
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  210. Abraham, Charles; Fuchs, Donald L., Method and apparatus for processing satellite positioning system signals.
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  211. Jandrell, Louis H. M., Method and apparatus for rapidly estimating the doppler-error and other receiver frequency errors of global positioning system satellite signals weakened by obstructions in the signal path.
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  219. Edge,Stephen William; Rehem,Yaser Abdel, Method and apparatus for wireless network timekeeping and synchronization.
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  221. Hefetz, Guy, Method and system for authenticating internet users.
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  226. Jandrell, Louis Henry Martin, Method and system for determining carrier frequency offsets for positioning signals.
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  227. Abraham, Charles; Podshivalov, Sergi; van Diggelen, Frank, Method and system for determining time in a satellite positioning system.
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  229. Ketchum, John W.; Nagaraj, Srinath; Bhatia, Ashok; Katzfey, Eric J.; Daita, Lalitaprasad V.; Baruah, Sekharjyoti, Method and system for femto cell self-timing and self-locating.
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  230. Heffez, Guy, Method and system for monitoring electronic purchases and cash-withdrawals.
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  232. Bromley, Patrick G.; Jandrell, Louis H. M.; Wise, Michael D., Method and system for processing positioning signals based on predetermined message data segment.
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  234. Bromley, Patrick G.; Jandrell, Louis H. M.; Wise, Michael D., Method and system for processing positioning signals based on predetermined message data segment.
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  241. Biacs, Zoltan, Method and system for storage and fast retrieval of digital terrain model elevations for use in positioning systems.
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  246. Hefetz, Guy, Method for identifying the georgrapic location of a router.
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