Communications: electrical – Vehicle detectors
Patent
1992-06-19
1995-04-11
Swarthout, Brent
Communications: electrical
Vehicle detectors
235384, 340928, 342 44, 455 561, G08G 101
Patent
active
054062756
ABSTRACT:
Methods and apparatus for the determination of the location of a mobile vehicle relative to a radio transceiver. The apparatus incorporates a mobile transceiver that calculates its location relative to at least a first stationary transceiver, and communicates this location back to the stationary transceiver. As a mobile vehicle enters the radio field radiated from at least a first stationary transceiver unit, the mobile vehicle transceiver begins measuring the energy of one or more radiated signals as an analog value, converts the analog value to digital form, from which a microprocessor and software algorithm calculates the specific distance from the stationary transceiver, and then returns a data string that informs the stationary transceiver of its location. This system thus allows both the mobile transceiver and the stationary transceiver unit to gain specific information with regard to the relative distance between mobile and base station units.
REFERENCES:
patent: 3602881 (1971-08-01), Bayne
patent: 3662328 (1972-05-01), Spivak
patent: 3697941 (1972-10-01), Christ
patent: 4031513 (1977-06-01), Simciak
patent: 4104630 (1978-08-01), Chasek
patent: 4303904 (1981-12-01), Chasek
patent: 4338587 (1982-07-01), Chiappetti
patent: 4481428 (1984-11-01), Charlot, Jr.
patent: 4494119 (1985-01-01), Wimbush
patent: 4501958 (1985-02-01), Glize et al.
patent: 4532511 (1985-07-01), Lemelson
patent: 4593273 (1986-06-01), Narcisse
patent: 4619002 (1986-10-01), Thro
patent: 4786903 (1988-11-01), Grindahl et al.
patent: 4884208 (1989-11-01), Marinelli et al.
patent: 4896161 (1990-01-01), Shibano
patent: 4937581 (1990-06-01), Baldwin et al.
patent: 5003317 (1991-03-01), Gray et al.
patent: 5086389 (1992-02-01), Hassett et al.
patent: 5128669 (1992-07-01), Dadds et al.
patent: 5144553 (1992-09-01), Hassett et al.
patent: 5163004 (1992-11-01), Rentz
patent: 5208756 (1993-05-01), Song
patent: 5289183 (1994-02-01), Hassett et al.
Desmond, "Toll Booth Net Automates Fare Collection Saves Cash", Network World, vol. 46, Issue N23, Jun. 12, 1989.
Encyclopedia of Computer Science and Engineering, Van Nostrand Reinhold Company, Inc., 1983, pp. 563-565.
Hartman Warran A.
Hassett John J.
Kowal Keith E.
AT/COMM Incorporated
Swarthout Brent
LandOfFree
Object location process and apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Object location process and apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Object location process and apparatus will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1541671