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Locating system and method using a mobile communications network

IPC분류정보
국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판)
  • H04Q-007/20
출원번호 US-0340755 (1994-11-16)
발명자 / 주소
  • Wortham Larry C.
출원인 / 주소
  • HighwayMaster Communications, Inc.
대리인 / 주소
    Baker & Botts, L.L.P.
인용정보 피인용 횟수 : 213  인용 특허 : 80

초록

A differential positioning system (10) includes components of a satellite-based or land-based positioning system (12) and components of a mobile communications network (14). The differential positioning system (10) provides accurate and immediate position information to a mobile unit (17). A transmi

대표청구항

[ What is claimed is:] [1.] A locating system using a cellular telephone network and a positioning system, comprising:a reference positioning receiver located at a transmitter site of the cellular telephone network, the reference positioning receiver having known position coordinates and operable to

이 특허에 인용된 특허 (80)

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