Communications: directive radio wave systems and devices (e.g. – Determining distance – With remote cooperating station
Reexamination Certificate
2003-04-21
2004-06-01
Pihulic, Daniel T. (Department: 3662)
Communications: directive radio wave systems and devices (e.g.,
Determining distance
With remote cooperating station
Reexamination Certificate
active
06744398
ABSTRACT:
TECHNICAL FIELD
The present invention relates to systems and methods for determining the distance between two objects or relative position of an object and, more specifically, to such systems and methods that determine distance and/or position based on the time a radio signal takes to propagate from a first location to a second location.
SUMMARY OF THE INVENTION
The present invention may be embodied as a distancing system for determining a distance between first and second locations comprising mobile and fixed units. The mobile unit is arranged at the first location and comprises first receive and first transmit portions operating at respective first and second frequencies, first and second baseband processors operating based on first and second clock signals, and a first control portion. The fixed unit is arranged at the second location and comprises second receive and transmit portions operating at the respective second and first frequencies, a third baseband processor operating based on a third clock signal, a second control portion, and a mode switch. The configuration of mode switch circuit allows communication between the fixed and mobile units or a determination of the distance between first and second locations.
The present invention may also be embodied as a method of determining a distance between first and second locations. If a plurality of fixed units are used, the present invention may further be embodied as a system or method for locating the mobile unit relative to the plurality of fixed units. In addition, the present invention may be configured as a system or method for collecting data from a plurality of locations.
These and other objects of the invention will become apparent from the following detailed discussion.
REFERENCES:
patent: 3613095 (1971-10-01), Elwood
patent: 3787846 (1974-01-01), Bishop
patent: 3797015 (1974-03-01), Elwood
patent: 3816832 (1974-06-01), Elwood
patent: 3839719 (1974-10-01), Elwood
patent: 3868692 (1975-02-01), Woodard et al.
patent: 3916410 (1975-10-01), Elwood
patent: 4128835 (1978-12-01), Russell
patent: 4136394 (1979-01-01), Jones et al.
patent: 4278977 (1981-07-01), Nossen
patent: 4297701 (1981-10-01), Henriques
patent: 4513285 (1985-04-01), Pike et al.
patent: 4703444 (1987-10-01), Storms, Jr. et al.
patent: 5044634 (1991-09-01), Dudley
patent: 5046839 (1991-09-01), Krangle
patent: 5056106 (1991-10-01), Wang et al.
patent: 5095430 (1992-03-01), Bonito et al.
patent: 5298904 (1994-03-01), Olich
patent: 5311271 (1994-05-01), Hurt et al.
patent: 5582566 (1996-12-01), Imasaka et al.
patent: 5652534 (1997-07-01), Taylor et al.
patent: 5691922 (1997-11-01), McEwan et al.
patent: 5912644 (1999-06-01), Wang
patent: 6067039 (2000-05-01), Pyner et al.
patent: 31 31 188 (1983-02-01), None
patent: 33 24 693 (1985-01-01), None
patent: 809118 (1997-11-01), None
patent: 2249448 (1992-05-01), None
patent: 403118494 (1991-05-01), None
patent: 08166444 (1996-06-01), None
patent: 0827162 (1996-11-01), None
patent: WO/00/33103 (2000-06-01), None
Ferraro & Boccignone, “Information proties in fine-to-course image transformations”, Image Processing, 1998. ICIP 98. Proceedings. 1998 Int'l Conference on vol. 2, 1998 pp. 757-761 vol. 2.
Miller, Grenander, O'Sullivan & Snyder, “Automatic target recognition organized via jump-diffusion algorithms”, Image Processing, IEEE Transactions on vol. 6 Jan. 1, 1997, pp. 157-174.
Rabideau & Steinhardt, “Fast subspace tracking using course grain and fine grain parallelism”, Acoustics, Speech, and Signal Processing, 1995. ICASSP-95 1995 Int'l Conference on vol. 5 1995 pp. 3211-3214 vol. 5.
Pentland, Darrell, Turk & Huang, “A simple, real-time range camera”, Computer Vision and Pattern Recognition, 1989. Proceedings CVPR '89., IEEE Computer Society Conference on 1989 pp 256-261.
Fretenburg Russell A.
Kazemir Steven S. J.
Pyner Derek J.
Pihulic Daniel T.
Schacht Michael R.
Schacht Law Office Inc.
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