Tracking system using miniaturized concealable communications module

• US 6,121,922 A
• Filed: 10/12/1994
• Issued: 09/19/2000
• Est. Priority Date: 10/12/1994
• Status: Expired due to Term

• Current Assignee: General Dynamics Mission Systems Inc. (General Dynamics Corporation)
• Original Assignee: Veridian Erim International Inc.
• Inventors: Mohan, Paul L.
• Primary Examiner(s): Blum, Theodore M.
• Application Number:
  US08/321,941
• Time in Patent Office: 2,169 Days
• Field of Search: 342/357, 342/419, 342/357.1, 342/357.09, 455/12.1
• US Class Current: 342/357.75
• CPC Class Codes: G01S 1/024 of beacon transmitters
• CPC Class Codes: G01S 1/68 Marker, boundary, call-sign, or like beacons transmitting signals not carrying directional information
• CPC Class Codes: G01S 19/16 Anti-theft; Abduction
• CPC Class Codes: G01S 19/35 Constructional details or hardware or software details of the signal processing chain
• CPC Class Codes: G01S 5/0036 of measured values, i.e. measurement on mobile and position calculation on base station
• CPC Class Codes: G01S 5/0226 Transmitters

Abstract

A tracking system uses a miniaturized geographic position determination and communications module, preferably in the form of a thin capsule, enabling the enclosure to be hidden in very small spaces, including personal concealment. Electronic circuitry and a thin, rechargeable battery are contained within the enclosure, the circuitry including a global positioning satellite receiver, a communications transceiver, and a controller. The controller causes the global positioning satellite receiver to receive and decode a signal relating to the geographic position of the module; cause the communications transmitter to communicate the geographic position information to a remote location; and disable the global positioning satellite receiver and communications transceiver when not in use so as to conserve power. The geographic position information may be communicated to a remote location either in response to a carrier activating a panic function or after receiving a request from a remote location which commences the transmission in response to the request.

Claims

1. A portable miniaturized geographic position determination and communications module adapted for use with a global positioning satellite system, the module comprising:

an enclosure, the physical dimensions of which are sufficiently small to permit personal concealment;

electronic circuitry disposed within the enclosure, the circuitry being powered by a single, self-contained, rechargeable source of power, the circuitry including;

a global positioning satellite receiver,

a communications transceiver, and

a controller operative to perform the following functions;

cause the global positioning satellite receiver to receive and decode a signal from a global positioning satellite containing information relating to the geographic position of the module,

cause the communications transceiver to communicate the information to a remote location, and

disable the global positioning satellite receiver and communications transceiver when not in use so as to conserve power from the source.

2. The module of claim 1, the enclosure being in the form of a thin capsule.

3. The module of claim 2, the electronic circuitry being mounted on a plurality of thin substrates disposed parallel to one another and electrically interconnected within the enclosure.

4. The module of claim 1, including a thin antenna supported on the enclosure associated with the global positioning satellite receiver.

5. The module of claim 1, the controller being further operative to perform a functional self-test of the global positioning satellite receiver and communications transceiver.

6. The module of claim 1, the controller being further operative to receive a request from a remote location and cause the communications transceiver to communicate the information in response to the request.

7. A miniaturized geographic position determination and communications module adapted for use with a global positioning satellite system, the module comprising:

a global positioning satellite receiver connected to a substantially thin antenna;

a communications transceiver;

a controller operative to transmit geographic position information received over the global positioning satellite receiver to a remote location using the communications transceiver; and

a thin, rechargeable battery to power to the global positioning satellite receiver, communications transceiver and controller,

the global positioning satellite receiver, communications transceiver, and controller being mounted on at least one planar substrate, and the substrate, battery and antenna being supported parallel and in close proximity to one another, enabling all components to be contained on or within an enclosure having sufficiently small physical dimensions IQ permit personal concealment.

8. The module of claim 7, the controller further including a power-management capability operative to disable the global positioning satellite receiver and communications transmitter when not in use so as to conserve power from the source.

9. A geographic tracking system adapted for use in with a positioning satellite system, comprising:

a miniaturized, readily concealable module containing a positioning satellite receiver and a communications device operative to transmit geographic position information received through the positioning satellite receiver to a remote location; and

a portable locating unit operative to receive the geographic position information at the remote location and inform a user as to the location of the miniaturized module.

10. The geographic tracking system of claim 9, the portable locating unit further including a display used to visually indicate the geographic position of the miniaturized module.

11. The geographic tracking system of claim 9, the portable locating unit further including a positioning satellite receiver enabling the unit to inform a user as to the location of the miniaturized module relative to that of the locating unit.

12. For use with a global positioning satellite system, a wireless geographic position tracking system comprising:

a miniaturized geographical position determination and communications module including;

an enclosure,

at least one planar substrate containing electronic circuitry disposed within said enclosure, said circuitry including geographic positioning receiver means connected to an antenna for receiving a signal from a global positioning satellite system, communications transceiver means, and control and power management means, and

a rechargeable power supply means for supplying power to said electronic circuitry;

a portable locating unit in communication with said miniaturized geographic position determination and communications module, comprising;

an enclosure,

a communications transceiver means disposed within said enclosure, the transceiver being adapted for receiving geographic positioning data from said geographic a position determination and communications module,

means for formatting and displaying said geographic positioning data, said formatting and display means being in communication with said communications receiver,

means for inputting operational commands to said formatting and displaying means, and

a power supply means disposed within said enclosure for supplying power to said portable locating unit.

13. The miniaturized position determination and communications module of the tracking system of claim 12, wherein said miniaturized position determination and communications module consumes a volume less than ten cubic inches.

14. The miniaturized position determination and communications module of the tracking system of claim 12, wherein each of said planar substrates comprises a multi-chip module.

15. The miniaturized position determination and communications module of the tracking system of claim 12, wherein said power management system further comprises means for alerting a user that said power supply is becoming depleted.

16. The power management system of claim 15, wherein said means for alerting a user that said power supply is becoming depleted comprises an alarm which may be sensed by the user.

17. The miniaturized position determination and communications module of the tracking system of claim 12, further comprising means for self-testing.

18. The portable locating unit of the tracking system of claim 12, wherein said portable locating unit further comprises means for receiving positioning data from a global positioning satellite system, said receiving means further being in communication with said cellular transceiver means and said formatting and display means.