Continuation of application No. 09/588,833, filed on Jun. 7, 2000, now Pat. No. 7,005,968. A
locating and tracking system is provided in which the assets are desired to be located and …

These and other objects of the invention are accomplished in accordance with the principles
of the present invention by providing methods and apparatus for locating and tracking …

4,688,026 A 8/1987 S cribner et al.... 340/572 determines the identities of the objects and
locations from 4,773,807 A 9/1988 Kroll et al.................. 414/282 the detected Signals and …

(58) Field of Search........................... 340/568.1, 572.1, Systems, devices, methods, and
programs disclosed herein 340/3.1, 539.1, 5.92, 5.2, 5.8, 825.36, 825.49; provide a Solution …

BACKGROUND This invention relates to a radio frequency (“RF”) object location method
and apparatus. More speci? cally, this inven tion relates to system architecture, as Well as …

US7855643B2 - Tracking systems, passive RFIDs, methods of locating and identifying RFIDs,
and methods of tracking items - Google Patents US7855643B2 - Tracking systems, passive …

BACKGROUND 0002. A feature of many modem wireless telecommuni cations Systems,
Such as digital cellular telecommunications Systems, is a location reporting Service wherein …

BACKGROUND 0003. The management and tracking of personnel, assets, and other
objects is required in a wide variety of environ ments and is often cumbersome, labor …

The invention relates to a method and apparatus for tracing a path traversed by an entity or
object, for example an article, eg a container shipment, asset or person, such as a person …

(57) ABSTRACT A location tracking system for tracking the location of items within a
controlled area comprises a plurality of RFID tags located according to the required …