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Method and apparatus for determining time for GPS receivers 원문보기

IPC분류정보
국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판)
  • G01S-005/02
  • H04B-007/185
출원번호 US-0702960 (2000-10-30)
발명자 / 주소
  • Norman F. Krasner
출원인 / 주소
  • SnapTrack, Inc.
대리인 / 주소
    Blakely, Sokoloff, Taylor & Zafman LLP
인용정보 피인용 횟수 : 188  인용 특허 : 25

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 ▼

1. A method for aiding the determination of a position of a mobile global positioning system (GPS) receiver which is coupled to a cellular communication receiver, said method comprising:monitoring transmissions of a cellular communications signal from a cellular communication cell site by an entity

이 특허에 인용된 특허 (25)

  1. Janky James M. (Los Altos CA) Schipper John F. (Palo Alto CA), Accurate time standard for vehicle operation.
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  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
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  7. Cantwell Robert H. (Sudbury MA), Global system positioning receiver.
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  9. 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.
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  15. Grobert Paul H. (Granada Hills CA), Null processing and beam steering receiver apparatus and method.
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  16. Grobert Paul H. (Granada Hills CA), Null processing receiver apparatus and method.
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  17. Kennedy Joseph P. (Fairfax VA) Roller Christopher D. (Burke VA) Hooper Robert W. (Arlington VA), Passive high accuracy geolocation system and method.
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  18. Attwood Stanley W. (Sun Lakes AZ), Position ambiguity resolution.
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  22. 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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  25. Brown Alison K. (Monument CO) Sturza Mark A. (Woodland Hills CA), Vehicle tracking system employing global positioning system (GPS) satellites.
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