Communications: directive radio wave systems and devices (e.g. – Directive – Including a satellite
Patent
1996-05-20
1998-05-12
Tarcza, Thomas H.
Communications: directive radio wave systems and devices (e.g.,
Directive
Including a satellite
3644497, 34082549, H04B 7185, G01S 502
Patent
active
057512469
ABSTRACT:
A system is provided which includes a GPS receiver which determines its location as defined by three spatial coordinates and an associated time reference. The system includes a control logic unit which determines whether the location of GPS receiver is outside the permitted boundaries configured into an internal database in the system. The control logic unit is configured to transmit information related to the location of the GPS receiver to a remotely located interrogator apparatus which communicates back to the control logic unit, instructions regarding determination and reporting of the location of the GPS receiver. An interrogator, if included with a database, can be used as a shopping assistant to aid a shopper in locating desired items by polling a number of the GPS receiver, each associated with a different item, and informing the shopper of the floor, store, aisle or shelf where the item is located.
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patent: 4973910 (1990-11-01), Reeser
patent: 5280295 (1994-01-01), Kelly et al.
patent: 5365447 (1994-11-01), Dennis
patent: 5400254 (1995-03-01), Fujita
patent: 5418537 (1995-05-01), Bird
patent: 5461390 (1995-10-01), Hoshen
IT&T Industries, Inc.
Phan Dao L.
Tarcza Thomas H.
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