Communications: directive radio wave systems and devices (e.g. – Determining distance
Reexamination Certificate
2009-10-13
2010-10-05
Black, Thomas G (Department: 3661)
Communications: directive radio wave systems and devices (e.g.,
Determining distance
C342S135000, C342S125000
Reexamination Certificate
active
07808424
ABSTRACT:
A device measures distance using a wireless signal that has two simultaneously transmitted components. Each of the two components includes a respective repeated code, the two codes having different durations. On receipt of the signal, the propagation distance is calculated separately for each code and compared. The calculated distance is considered to be valid only if the two calculations yield the same result. The durations of the two codes may be proportional to numbers having a relative prime relationship. The signal is generated and transmitted by the same device that performs the distance calculation, with the signal being retransmitted back to the device by a remote device, or may be generated and transmitted by the remote device.
REFERENCES:
patent: 3530467 (1970-09-01), Attwood et al.
patent: 3659292 (1972-04-01), Low et al.
patent: 3765017 (1973-10-01), Dentino
patent: 4057800 (1977-11-01), Ganz
patent: 4430655 (1984-02-01), Rittenbach
patent: 4537502 (1985-08-01), Miller et al.
patent: 4847622 (1989-07-01), Maitre et al.
patent: 5661460 (1997-08-01), Sallen et al.
patent: 5796364 (1998-08-01), Fuchter et al.
patent: 5808580 (1998-09-01), Andrews, Jr.
patent: 5874903 (1999-02-01), Shuey et al.
patent: 6295019 (2001-09-01), Richards et al.
patent: 6363323 (2002-03-01), Jones
patent: 6420992 (2002-07-01), Richmond
patent: 6614387 (2003-09-01), Deadman
patent: 6812824 (2004-11-01), Goldinger et al.
patent: 7023356 (2006-04-01), Burkhardt et al.
patent: 2002/0063622 (2002-05-01), Armstrong et al.
patent: 2002/0130807 (2002-09-01), Hall et al.
patent: 2003/0156603 (2003-08-01), Rakib et al.
patent: 2003/0190889 (2003-10-01), Nguyen et al.
patent: 2006/0044181 (2006-03-01), Wilcox
patent: 2006/0049975 (2006-03-01), Knepper et al.
patent: 2006/0071854 (2006-04-01), Wilcox
patent: 2003280139 (2004-06-01), None
patent: 100412566 (2006-01-01), None
patent: 1055940 (2000-11-01), None
patent: 2006510013 (2006-03-01), None
patent: 20050085466 (2005-08-01), None
patent: 200405322 (2004-06-01), None
Foreign Office Action for Application No. EP03722513.2-2220, issued Nov. 12, 2007.
Foreign Office Action for Application No. 200380105646.6, issued Aug. 3, 2007.
Foreign Office Action for Application No. 200380105646.6, issued Dec. 22, 2006.
Foreign Office Action for Application No. 2004-558898 issued Apr. 23, 2009.
J. Werb, “Designining a Positioning System for Finding Things and People Indoors”, IEEE Spectrum, vol. 35, No. 9, Sep. 1998, pp. 71-78.
Ansaf Ibrahem Alrabady et al, “Some Attacks Against Vehicles' Passive Entry Security Systems and Their Solutions” IEEE Transactions on Vehicular Technology, vol. 52, No. 2, Mar. 2003, pp. 431-439.
Black Thomas G
Chen Shelley
Koninklijke Philips Electronics , N.V.
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