ENCODED COLOR INFORMATION FACILITATING DEVICE PAIRING FOR WIRELESS COMMUNICATION

• US 20090176451A1
• Filed: 04/21/2008
• Published: 07/09/2009
• Est. Priority Date: 01/04/2008
• Status: Abandoned Application

• Current Assignee: Microsoft Technology Licensing LLC (Microsoft Corporation)
• Original Assignee: Microsoft Corporation
• Inventors: Herzi, Lotfi, Lakshmanan, Thyagarajan, Yang, Ting-yi
• Application Number:
  US12/106,328
• Publication Number:
  US 20090176451A1
• Time in Patent Office: Days
• US Class Current: 455/41.200
• CPC Class Codes: H04W 99/00 Subject matter not provided for in other groups of this subclass

Abstract

Pairing information is encoded as color information by a color coding device. The encoded color information is displayed by the color coding device and viewed by a color decoding device. The color decoding device decodes the encoded pairing information and uses the decoded pairing information to establish wireless communication with the color coding device.

Claims

1. A method of pairing a color coding device with a color decoding device for wireless communication, comprising:

encoding pairing information as color information with the color coding device;

displaying the color information with the color coding device;

receiving the color information with the color decoding device;

decoding the color information into decoded pairing information with the color decoding device; and

establishing wireless communication between the color coding device and the color decoding device using the decoded pairing information.

2. The method of claim 1, where the color information includes a sequence of distinguishable colors.

3. The method of claim 2, where the sequence of distinguishable colors are mapped to a binary number such that a first distinguishable color is used to represent a 1 and a second distinguishable color is used to represent a 0.

4. The method of claim 1, further comprising recognizing a location of an unpaired device with the color coding device, encoding the location as color information with the color coding device, and displaying the color information corresponding to the location.

5. The method of claim 4, further comprising decoding the color information corresponding to the location with the color decoding device, and using the location to verify an identity of the color decoding device to the color coding device.

6. The method of claim 1, where the color coding device is a surface computing device.

7. The method of claim 1, where the color decoding device is a mobile device having a camera.

8. The method of claim 1, where the color decoding device is a mobile device having an image sensor.

9. A color coding device, comprising:

a display capable of presenting two or more distinguishable colors to a color decoding device;

a wireless communication system to wirelessly communicate with the color decoding device;

a processor; and

a computer readable memory including instructions, that when executed by the processor;

cause the processor to encode pairing information as color information;

cause the display to present color information for viewing by the color decoding device;

cause the wireless communication system to receive verification data from the color decoding device, the verification data derived from the pairing information displayed as color information; and

cause the wireless communication system to establish wireless communication with the color decoding device.

10. The color coding device of claim 9, where the computer readable memory includes instructions, that when executed by the processor, cause the processor to encode pairing information as color information that includes a sequence of distinguishable colors.

11. The color coding device of claim 10, where the computer readable memory includes instructions, that when executed by the processor, cause the processor to map the sequence of distinguishable colors to a binary number such that a first distinguishable color is used to represent a 1 and a second distinguishable color is used to represent a 0.

12. The color coding device of claim 9, further comprising an input system configured to recognize a location of an unpaired device, and where the computer readable memory includes instructions, that when executed by the processor, cause the processor to encode the location as color information, and cause the display to display the color information corresponding to the location.

13. The color coding device of claim 12, wherein the input system includes at least one infrared reference light and at least one infrared camera.

14. The color coding device of claim 9, where the display is a rear projection display.

15. The color coding device of claim 14, where the display includes a horizontally orientated diffuser screen onto which projection light is rear projected.

16. The color coding device of claim 9, where the wireless communication system is configured to send and receive data via radio-frequency communication.

17. A computer readable memory comprising instructions, that when executed by a processor, cause a color decoding device to:

view a sequence of distinguishable colors presented by a color coding device;

decode the sequence of distinguishable colors into decoded pairing information; and

utilize the decoded pairing information to establishing radio-frequency communication with the color coding device.

18. The computer readable memory of claim 17, where the instructions cause the color decoding device to decode the sequence of distinguishable colors into decoded pairing information at least in part by translating the sequence of distinguishable colors into a binary number.

19. The computer readable memory of claim 17, where the instructions cause the color decoding device to transmit verification data to the color coding device via radio-frequency communication, the verification data derived from the decoded pairing information.

20. The computer readable memory of claim 19, where the instructions cause the color decoding device to transmit verification data including a physical location of the color decoding device derived from the decoded pairing information.