Locator device

• US 5,594,425 A
• Filed: 10/31/1994
• Issued: 01/14/1997
• Est. Priority Date: 10/31/1994
• Status: Expired due to Fees

• Current Assignee: PeopleNet Communications Corporation (Trimble Inc.)
• Original Assignee: PeopleNet Communications Corporation (Trimble Inc.)
• Inventors: Ladner, David L., Grazzini, Andrea J.
• Primary Examiner(s): ZIMMERMAN, BRIAN A
• Application Number:
  US08/332,351
• Time in Patent Office: 806 Days
• Field of Search: 340/825.49, 340/825.45, 340/825.44, 340/991, 340/825.34, 340/825.06, 342/357, 342/457
• US Class Current: 340/539.18
• CPC Class Codes: B60R 25/102 a signal being sent to a remote location, e.g. a radio signal being transmitted to a police station, a security company or the owner
• CPC Class Codes: B60R 25/33 of global position, e.g. by providing GPS coordinates
• CPC Class Codes: B60W 2556/50 of positioning data, e.g. GPS [Global Positioning System] data
• CPC Class Codes: G01S 19/16 Anti-theft; Abduction
• CPC Class Codes: G01S 19/17 Emergency applications
• CPC Class Codes: G01S 5/0009 Transmission of position information to remote stations involving assistance data G01S5/0236
• CPC Class Codes: G08B 21/0202 Child monitoring systems using a transmitter-receiver system carried by the parent and the child
• CPC Class Codes: G08B 21/22 responsive to presence or absence of persons
• CPC Class Codes: G08G 1/205 Indicating the location of the monitored vehicles as destination, e.g. accidents, stolen, rental

Abstract

A locator apparatus includes a receiver for receiving location information indicative of a location of the receiver. A memory is coupled to the receiver and stores the location information. A cellular transmitter is coupled to the memory and the receiver and transmits the location information to a second receiver. A data processing station processes the location information to determine the location of the receiver.

Claims

1. A locator system, comprising:

a portable locator apparatus including;

a satellite receiver for receiving location information transmitted by a satellite, the location information being indicative of a location of the portable locator; and

a first cellular transmitter, coupled to the satellite receiver, for transmitting the location information over a cellular network;

a tracking system having a receiver for receiving the location information transmitted by the first cellular transmitter, the tracking system including a tracking controller for relating the location information to a map to provide a location output indicative of the location of the portable locator; and

wherein the tracking system further comprises;

an operator output apparatus, coupled to the tracking controller, for providing the location output to an operator to indicate the location of the portable locator;

a tracking memory, coupled to the tracking controller, storing response information indicative of a plurality of designated responders to be contacted upon receipt of location information from the portable locator; and

notifying means for notifying one of the plurality of responders in response to receiving location information from the locator apparatus, the notifying means attempting to notify at least one of the plurality of responders in a specific order.

2. The locator system of claim 1 wherein the tracking system further comprises:

a transmitter coupled to the tracking controller, and wherein the locator apparatus includes a cellular receiver, coupled to the cellular transmitter in the locator apparatus, the tracking controller providing an interrogation signal to the locator apparatus, the interrogation signal being transmitted by the transmitter in the tracking system and received by the cellular receiver in the locator apparatus, the locator apparatus transmitting the location information in response to the interrogation signal from the tracking controller.

3. The locator system of claim 2 wherein the locator apparatus further includes:

a locator controller, coupled to the satellite receiver, the cellular transmitter in the locator apparatus, and the cellular receiver in the locator apparatus;

a locator memory coupled to the locator controller for storing location information; and

a locator input device for receiving inputs from an operator and providing input signals to the locator controller based on the inputs received from the operator.

4. The locator system of claim 3 wherein the locator controller includes means for receiving a send signal from the locator input device and for retrieving the location information from the memory and causing the cellular transmitter in the locator apparatus to transmit the location information in response to the send signal.

5. The locator system of claim 4 wherein the locator controller includes a real time clock providing a time signal indicative of time and date, and wherein the locator controller stores updated location information in the locator memory at time intervals based on the time signal.

6. The locator system of claim 5 wherein the locator controller causes time and date information corresponding to the location information to be stored in the locator memory.

7. The locator system of claim 6 wherein the locator controller causes an emergency signal to be transmitted by the cellular transmitter in the locator apparatus in response to an emergency input signal provided by the locator input device, wherein the notifying means notifies an emergency responder in response to receiving the emergency signal from the locator apparatus.

8. The locator system of claim 7 wherein the locator apparatus includes:

connection means, for connecting the locator apparatus to an article;

detection means for detecting when the connection means is being disconnected in an unauthorized manner; and

means for sending the emergency signal in response to detection of the connector being disconnected in an unauthorized manner.

9. The locator system of claim 1 wherein the specific order is based on an urgency status of the locator information received from the locator apparatus.

10. The locator system of claim 1 wherein the notifying means attempts to notify a responder according to a predetermined order and continues to attempt to notify subsequent responders in the order until a responder has been successfully notified.

11. An apparatus for locating a cellular transmitter which transmits position information, the apparatus comprising:

a receiver for receiving the position information, indicative of the position of the cellular transmitter, the receiver including a memory and a clock providing time and date information, the receiver receiving and storing a plurality of sets of position information, along with corresponding time and date information;

a mapping controller for relating the position information to a map to provide a location signal indicative of present and past location of the cellular transmitter; and

an output apparatus for providing an output to an operator indicative of the present and past location of the cellular transmitter, based on the location signal.