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특허 상세정보

Wireless time reference system and method

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) G01S-003/02   
미국특허분류(USC) 342/465; 342/463
출원번호 US-0480982 (2006-07-06)
등록번호 US-7492316 (2009-02-17)
발명자 / 주소
출원인 / 주소
대리인 / 주소
    McIntyre Harbin & King
인용정보 피인용 횟수 : 14  인용 특허 : 2
초록

Instead of normalizing time reference of independent spatially-located clocks using a reference tag transmission from known location, the present invention uses an interarrival time interval between a pulse pair of UWB pulses as a timing metric. Thus, a method of synchronizing spatially-located clock or normalizing time indications thereof comprises transmitting a UWB pulse pair, determining at first and second monitoring stations a respective count value indicative of a locally measured time interval between received pulse pairs, determining a ratio bet...

대표
청구항

We claim: 1. A method of providing normalization of time of local clock circuits of two or more spatially-located receivers of respective monitoring stations, said method comprising: transmitting at least two RF pulses to define a time reference interval; detecting said RF pulses at said receivers; at respective monitoring associated with said receivers, measuring durations of said time reference interval according to said detecting step; determining a relationship between durations measured at said monitoring stations; and providing normalization of ti...

이 특허를 인용한 특허 피인용횟수: 14

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  2. Rovinsky, Jacob. Anti-rocket system. USP2018069995559.
  3. Hwang, Jaeho; Kim, JaeMoung. Cognitive UWB system and cognitive UWB data communication method. USP2011017864830.
  4. Brown, Jonathan E.; Burkart, Scott M.. Data separation in high density environments. USP2013028368513.
  5. Kim, Tae Wook; Kang, Man Keun. Distance measuring device and receiving devices thereof. USP2014108872692.
  6. Hall, Stewart E.. Electronic article surveillance deactivator with multiple label detection and method thereof. USP2011077973660.
  7. Ward, Andrew Martin Robert. Location system. USP2015018934579.
  8. Wild, Ben. Long range radio frequency identification system. USP2014048699636.
  9. Hach, Rainer; Rommel, Albrecht. Method and system for multipath reduction for wireless synchronizing and/or locating. USP2018059983292.
  10. Mähönen, Petri H.; Melpignano, Diego. Method and system for optimizing the use of the radio spectrum and computer program product therefor. USP2015049014232.
  11. Wild, Ben; Barton, Rob. Methods for enabling low-power RFID communication. USP2016069367718.
  12. Rovinsky, Jacob; Solomon, Ernest; Hankin, Maxim; Kashani, Israel. Relative time measurement system with nanosecond level accuracy. USP2014118880372.
  13. Halladay, Henry E.; Edewaard, David O.; Swann, Terry M.. Remote programmable reference. USP2012128331888.
  14. Burkart, Scott M.; Brown, Jonathan E.. Synchronization of devices in a RFID communications environment. USP2013068456282.