Infrared beacon positioning system

• US 6,216,087 B1
• Filed: 11/23/1999
• Issued: 04/10/2001
• Est. Priority Date: 11/23/1999
• Status: Expired due to Term

• Current Assignee: Xerox Corporation (Xerox Holdings Corp.)
• Original Assignee: Xerox Corporation (Xerox Holdings Corp.)
• Inventors: Want, Roy, Goldberg, David, LaMarca, Anthony G., Cass, Todd A., Weiser, Mark D.
• Primary Examiner(s): Cuchlinski, Jr., William A.
• Assistant Examiner(s): MARC-COLEMAN, MARTHE Y
• Application Number:
  US09/447,876
• Time in Patent Office: 504 Days
• Field of Search: 701/207, 701/214, 701/216, 701/217, 342/70, 342/74, 342/385, 342/386, 342/457, 340/815
• US Class Current: 701/207
• CPC Class Codes: G01S 1/7034 Mounting or deployment thereof
• CPC Class Codes: G01S 2201/01 adapted for specific applications or environments
• CPC Class Codes: H04B 10/1149 Arrangements for indoor wireless networking of information

Abstract

A physical positioning system for a portable computing device equipped with an infrared receiver includes a light source removably attachable to a lighting fixture that supplies electrical power at a determined voltage. The light source has an attached voltage converter to provide a reduced supplied voltage. An infrared beacon is powered at the reduced supplied voltage through an electrical connection to the voltage converter. The infrared beacon broadcasts a data signal representative of a physical location.

Claims

1. A physical positioning system comprising:

a light source removably attachable to a lighting fixture that supplies electrical power at a determined voltage, the light source having an attached voltage converter adapted to provide a reduced supplied voltage;

an infrared beacon powered at the reduced supplied voltage through an electrical connection to the voltage converter, the infrared beacon adapted to broadcast a data signal representative of a physical location; and

a microcontroller functionally associated with the voltage converter and the infrared beacon to generate an electrical pulse train convertible by the infrared beacon into a predetermined series of infrared pulses.

2. The physical positioning system of claim 1 wherein the data signal is a predetermined series of infrared pulses.

3. The physical positioning system of claim 1 further comprising a portable computing device equipped with an infrared receiver adapted to receive the data signal from the infrared beacon and to determine its physical location.

4. The physical positioning system of claim 3 wherein the portable computing device further comprises a global positioning system receiver.

5. The physical positioning system of claim 3 wherein the infrared beacon further comprises an infrared trigger mechanism to activate broadcast of the data signal and wherein the portable computing device further comprises an infrared beam adapted to activate the trigger mechanism.

6. The physical positioning system of claim 3 wherein the infrared beacon further comprises a radio trigger mechanism to activate broadcast of the data signal and wherein the portable computing device further comprises a radio broadcast adapted to activate the trigger mechanism.

7. The physical positioning system of claim 3 wherein the infrared beacon is configured to selectively broadcast a data signal and wherein the portable computing devices is equipped with an infrared receiver to receive the data signal from the infrared beacon.

8. The physical positioning system of claim 3 wherein the infrared beam is adapted to selectively broadcast more than one data stream in response to predefined conditions.

9. The physical positioning system of claim 1 wherein the light source is at least one of an incandescent, fluorescent, and high intensity discharge lighting device.

10. The physical positioning system of claim 9 wherein the high intensity discharge lighting device is at least one of metal halide and sodium.

11. The physical positioning system of claim 1 wherein the data signal further comprises at least one of identification information, location information, geographic information, time dependent information, weather information, and temperature information.

12. The physical positioning system of claim 1 further comprising a trigger circuit responsive to at least one of an optical input, pressure input, and motion input.

13. The physical positioning system of claim 1 wherein the lighting fixture is associated with at least one of a pole and a structure.

14. A physical positioning system comprising:

a light source removably attachable to a lighting fixture that supplies electrical power at a determined voltage, the light source having an attached voltage converter adapted to provide a reduced supplied voltage;

an infrared beacon powered at the reduced supplied voltage through an electrical connection to the voltage converter, the infrared beacon adapted to broadcast a data signal representative of a physical location;

a microcontroller attached between the voltage converter and the infrared beacon to generate an electrical pulse train convertible by the infrared beacon into a predetermined series of infrared pulses; and

an oscillator attached to trigger the microcontroller to initiate the electrical pulse train.

15. A physical positioning system comprising:

a light source removably attachable to a lighting fixture that supplies electrical power at a determined voltage, the light source having an attached voltage converter adapted to provide a reduced supplied voltage;

an infrared beacon powered at the reduced supplied voltage through an electrical connection to the voltage converter, the infrared beacon adapted to broadcast a data signal representative of a physical location;

a microcontroller attached between the voltage converter and the infrared beacon to generate an electrical pulse train convertible by the infrared beacon into a predetermined series of infrared pulses; and

a trigger circuit attached to trigger the microcontroller to initiate the electrical pulse train.

16. A physical positioning system comprising:

a light source removably attachable to a lighting fixture that supplies electrical power at a determined voltage, the light source having an attached voltage converter adapted to provide a reduced supplied voltage;

an infrared beacon powered at the reduced supplied voltage through an electrical connection to the voltage converter, the infrared beacon adapted to broadcast a data signal representative of a physical location;

a microcontroller attached between the voltage converter and the infrared beacon to generate an electrical pulse train convertible by the infrared beacon into a predetermined series of infrared pulses; and

a trigger circuit attached to trigger the microcontroller to initiate the electrical pulse train, the trigger circuit being activated by an infrared input signal.

17. A physical positioning system comprising:

a light source removably attachable to a lighting fixture that supplies electrical power at a determined voltage, the light source having an attached voltage converter adapted to provide a reduced supplied voltage;

an infrared beacon powered at the reduced supplied voltage through an electrical connection to the voltage converter, the infrared beacon adapted to broadcast a data signal representative of a physical location;

a microcontroller attached between the voltage converter and the infrared beacon to generate an electrical pulse train convertible by the infrared beacon into a predetermined series of infrared pulses; and

a trigger circuit attached to trigger the microcontroller to initiate the electrical pulse train, the trigger circuit being activated by a radio input signal.

18. A physical positioning system comprising:

a light source removably attachable to a lighting fixture that supplies electrical power at a determined voltage, the light source having an attached voltage converter adapted to provide a reduced supplied voltage;

an infrared beacon powered at the reduced supplied voltage through an electrical connection to the voltage converter, the infrared beacon adapted to broadcast a data signal representative of a physical location;

a microcontroller attached between the voltage converter and the infrared beacon to generate an electrical pulse train convertible by the infrared beacon into a predetermined series of infrared pulses; and

a trigger circuit attached to trigger the microcontroller to initiate the electrical pulse train, the trigger circuit being activated by a user activated switch input signal.