Telecommunications – Radiotelephone system – Zoned or cellular telephone system
Reexamination Certificate
2005-09-27
2005-09-27
Appiah, Charles (Department: 2686)
Telecommunications
Radiotelephone system
Zoned or cellular telephone system
C342S126000, C342S450000
Reexamination Certificate
active
06950661
ABSTRACT:
A location calculation method for calculating, by using propagation delay time of signals received from wireless transmitters, a location of a reception point of the signals to thereby reduce errors in the distance measurement due to an erroneous detection of a path of a received signal includes first step of measuring reception timing of signals received from the wireless transmitters, second step of estimating, according to results of measurement of the reception timing obtained by the first step, an erroneous result of measurement, and third step of removing the results of measurement estimated as the erroneous results by the second step from the results of measurement of the reception timing obtained by the first step, and thereby calculating the location of the reception point.
REFERENCES:
patent: 5614914 (1997-03-01), Bolgiano et al.
patent: 5899957 (1999-05-01), Loomis
patent: 6061018 (2000-05-01), Sheynblat
patent: 6075987 (2000-06-01), Camp et al.
patent: 6108558 (2000-08-01), Vanderspool, II
patent: 6212392 (2001-04-01), Fitch et al.
patent: 6369756 (2002-04-01), Wang et al.
patent: 6405213 (2002-06-01), Layson et al.
patent: 6683568 (2004-01-01), James et al.
patent: 02220365 (1997-11-01), None
patent: 0 930 513 (1998-12-01), None
patent: 62-272172 (1986-05-01), None
patent: 63-006478 (1986-06-01), None
patent: 63-177016 (1986-12-01), None
patent: 05-040162 (1991-08-01), None
patent: 7-181242 (1993-12-01), None
patent: 11-083978 (1997-09-01), None
patent: 2001-021636 (1999-07-01), None
patent: WO 00/16436 (1999-09-01), None
patent: WO 00/69198 (2000-05-01), None
patent: WO 01/05184 (2000-06-01), None
U.S. Appl. No. 09/940,548, filed Aug. 29, 2001, Tsunehara et al.
Fujishima Kenzaburo
Kuwahara Mikio
Tsunehara Katsuhiko
Watanabe Koji
A. Marquez, Esq. Juan Carlos
Appiah Charles
Fisher Esq. Stanley P.
Hitachi , Ltd.
Ly Nghi H.
LandOfFree
Location detection method, location detection apparatus and... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Location detection method, location detection apparatus and..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Location detection method, location detection apparatus and... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3432979