Automated item coupling system and method therefor

• US 6,002,334 A
• Filed: 07/06/1998
• Issued: 12/14/1999
• Est. Priority Date: 07/06/1998
• Status: Expired due to Term

• Current Assignee: Motorola Solutions, Inc.
• Original Assignee: Motorola, Inc. (Motorola Solutions, Inc.)
• Inventors: Dvorak, Joseph L.
• Primary Examiner(s): Lee, Benjamin C.
• Application Number:
  US09/110,340
• Time in Patent Office: 526 Days
• Field of Search: 340/568.1, 340/539, 340/571, 340/573.1, 340/573.4, 340/988
• US Class Current: 340/568.1
• CPC Class Codes: G08B 21/02 Alarms for ensuring the safety of persons

Abstract

A tracking device (100) issues an alert when an item (405) is separated from the device (100) according to programmable characteristics. The tracking device stores information pertaining to the item in a database upon receipt of a command identifying the item as eligible for tracking (510, 520). Separation characteristics between the item and the tracking device are tracked using, at least in part, information stored in the database. Preferably, the tracking device automatically registers the item in the database as a coupled item in response to the item being within a programmable range of the tracking device for at least a programmable period of time (530). The tracking device automatically issues an alert identifying the item when the separation characteristics indicates a separation that exceeds a particular threshold (540).

Claims

1. A method for automated item coupling in a tracking device, comprising the steps of:

registering an item as eligible for tracking;

storing information pertaining to the item in a database;

automatically tracking the item using in part the stored item information in response to the item being within a programmable range of the tracking device for at least a first programmable period of time; and

automatically taking action in response to the tracked item being outside the programmable range of the tracking device for at least a second programmable period of time.

2. The method of claim 1, wherein the step of automatically taking action comprises the step of issuing an alert that includes an identifier for the item.

3. The method of claim 1, wherein the step of registering an item comprises the steps of:

receiving a command to couple the item; and

entering an identifier for the item into a database.

4. The method of claim 1, wherein the step of automatically tracking the item in a database comprises the steps of determining whether the item is within the programmable range based upon a comparison between location information obtained for the item, and location information obtained for the tracking device.

5. The method of claim 1, wherein the step of automatically tracking the item in a database comprises the steps of determining whether the item is within the programmable range based upon receipt, by the tracking device, of a communication signal coming from the item.

6. In a tracking device carried by a user, a method for alerting based on imputed separation characteristics between the user and the item, comprising the steps of:

storing information pertaining to an item in a database upon receipt of a command identifying the item as eligible for tracking;

tracking separation characteristics between the item and the tracking device using, at least in part, information stored in the database, wherein the step of tracking comprises the steps of;

obtaining initial location information of the tracking device upon receipt of the command;

storing the initial location information in the database;

obtaining current location information for the tracking device when moved relative to the item; and

determining that the separation characteristics indicates a separation that exceeds the particular threshold when a comparison between the initial location information of the tracking device and the current location information indicates a difference in distance between the tracking device and the item greater than a programmable range; and

automatically issuing an alert identifying the item when the separation characteristics indicates a separation that exceeds a particular threshold.

7. In a tracking device carried by a user, a method for alerting when items are separated from the user, comprising the steps of:

storing information pertaining to an item in a database upon receipt of a command identifying the item as eligible for tracking;

tracking separation characteristics between the item and the tracking device using, at least in part, information stored in the database, wherein the step of tracking comprises the steps of;

automatically registering the item in the database as a coupled item in response to the item being within a programmable range of the tracking device for at least a first programmable period of time; and

determining that the separation characteristics indicates a separation that exceeds the particular threshold when the coupled item is outside the programmable range of the tracking device for at least a second programmable period of time; and

automatically issuing an alert identifying the item when the separation characteristics indicates a separation that exceeds a particular threshold.

8. The method of claim 7, wherein the step of determining that the separation characteristics indicates a separation that exceeds the particular threshold comprises the steps of:

monitoring for a signal emanating from the item; and

determining that the item is within the programmable range when a signal emanating from the item is detected.

9. The method of claim 8, wherein the step of automatically registering comprises the steps of:

monitoring for a signal emanating from the coupled item; and

determining that the item is outside the programmable range when a signal emanating from the coupled item is not detected.

10. A system for alerting when items are separated from a user, comprising:

a user interface having an input device for receiving a command from the user, and an output device for presenting an alert to the user;

a database having stored therein a plurality of items coupled for tracking;

a location server having an output of current location information; and

a tracker module operatively connected to the user interface, to the database, and to the location server, and responsive to the output of current location information to track separation characteristics with respect to a coupled item by storing, as initial location information, current location information output upon receipt of a command from the user, and by comparing current location information subsequently outputted with the stored initial location information, and to automatically issue an alert identifying the coupled item when the separation characteristics indicates a separation that exceeds a particular threshold.