Wide area and large capacity intelligent object tracking system and method

• US 7,932,812 B2
• Filed: 08/15/2003
• Issued: 04/26/2011
• Est. Priority Date: 08/19/2002
• Status: Active Grant

• Current Assignee: Purelink Technology Inc.
• Original Assignee: Purelink Technology Inc.
• Inventors: Nérat, Emerson
• Primary Examiner(s): Brown; Vernal U
• Application Number:
  US10/525,082
• Publication Number:
  US 20060111123A1
• Time in Patent Office: 2,811 Days
• Field of Search: 340/10.1, 340/10.4, 340/825.69, 340/825.72, 340/539.1, 340/572.3, 235/381, 235/385
• US Class Current: 340/10.1
• CPC Class Codes: G06K 17/0022 arrangements or provisious for transferring data to distant stations, e.g. from a sensing device "transfer between computer elements G06F13/00 "; data-transmission H04L
• CPC Class Codes: G06K 7/0008 General problems related to the reading of electronic memory record carriers, independent of its reading method, e.g. power transfer

Abstract

A wide area object tracking system comprises a primary and two secondary base stations. Each secondary base station is coupled to the primary base station to define a tag detecting cell. Each station receives a signal from a tag attached to a tracked object, yielding three signals indicative of the tag location within the cell. Many overlapping cells in a given space allow tracking objects within that space. The system comprises a central server coupled to the primary base station, and may include at least one tag recording unit and a tag recovery apparatus both coupled to the central server. The primary base station uses three channels to communicate with the tag, the central server, and with at least one other primary base station, the secondary base stations, and a portable control unit.

Claims

1. A wide area object tracking system comprising:

at least one primary base station and a pair of secondary base stations;

each of said pair of secondary base stations being so coupled to said primary base station as to define a tag detecting cell;

each of said primary and two secondary base stations being configured to receive a tag signal broadcast from a tag attached to an object to be tracked, yielding three received signals indicative of the location of said tag within said cell;

whereby a plurality of overlapping said tag detecting cells in a given space would allow tracking objects at any place within said given space;

a central server coupled to said at least one primary base station; and

a tag recovery apparatus coupled to said central server

wherein said tag recovery apparatus includes a device to input a tag unlocking code, a tag depository compartment for receiving tags, and a guarantee ticket distributor to provide a guarantee ticket in exchange for a tag provided in said tag depository compartment.

2. A system as recited in claim 1, wherein said tag recovery apparatus is wirelessly coupled to said central server.

3. A system as recited in claim 1, wherein said tag including a rechargeable power source;

said tag recovery apparatus being configured to recharge the power source.

4. A system as recited in claim 1, wherein said tag recovery apparatus being configured to forward information to said central server about tags received in said tag depository compartment.

5. A system as recited in claim 1, wherein said guarantee ticket being selected from the group consisting of cash and discount coupon.

6. A system as recited in claim 5, wherein said tag is rented and said guarantee ticket is issued in exchange for said rented tag.

7. A system as recited in claim 1, further comprising at least one tag to be attached to an object to be tracked;

said at least one tag including a casing and attaching means releasably secured to said casing;

said attaching means including a loop having two ends and being secured to said casing at one end and releasably mounted in said casing at its other end;

said other end being releasably mounted in said casing via a releasable locking mechanism;

said tag recovery apparatus being configured to receive a list of central server tag unlocking codes from said central server for comparison with inputted tag unlocking code both to be used in assessing if said releasable locking mechanism should be unlocked.

8. A system as recited in claim 1, wherein said tag recovery apparatus includes a display screen and a controller configured so as to display on said display screen a menu offering different form of retribution in exchange for tags.