Identification of devices on touch-sensitive surface

• US 8,063,888 B2
• Filed: 02/20/2007
• Issued: 11/22/2011
• Est. Priority Date: 02/20/2007
• Status: Expired due to Fees

• Current Assignee: Microsoft Technology Licensing LLC (Microsoft Corporation)
• Original Assignee: Microsoft Corporation
• Inventors: McFarlane, Craig, Bangerter, Neal, Drake, Victor, Silverstein, Dana L., Kennedy, Kevin, Richardson, Cyra, Keam, Nigel
• Primary Examiner(s): Lao; Lun-Yi
• Assistant Examiner(s): SHAH, PRIYANK J
• Application Number:
  US11/708,400
• Publication Number:
  US 20080198138A1
• Time in Patent Office: 1,736 Days
• Field of Search: 345/175, 345/173, 235/494, 235/454, 717/174, 717/176, 455/426.1, 178/18.09, 178/18.01
• US Class Current: 345/173
• CPC Class Codes: G06F 3/0421 by interrupting or reflecting a light beam, e.g. optical touch-screen

Abstract

The identification of a data storage device detected on a touch-sensitive display surface of a display device is described. In one embodiment, the presence and location of the data storage device is detected on the display surface and the data storage device is detected on a wireless communications channel. It is then confirmed that the data storage device detected on the wireless communications channel is the data storage device detected on the surface of the display device by communicating with the data storage device over a second communications channel.

Claims

1. In an interactive display device comprising a touch-sensitive surface, a method of identifying a data storage device placed on the touch-sensitive surface, the method comprising:

detecting a presence and location of an object including the data storage device on the surface of the display device;

detecting a plurality of data storage devices on a wireless communications channel, the plurality of data storage devices including the data storage device included with the object on the surface of the display device;

distinguishing the object comprising the data storage device placed on the display and detected via the wireless communications system from one or more data storage devices not placed in the display but detected via the wireless communications channel by sending a request to each data storage device detected over the wireless communications channel for the data storage device to emit or receive a locating signal over a second communications channel, and communicating with the object detected on the surface of the display over the second communications channel;

after distinguishing which data storage device detected on the wireless communications channel is included with the object detected on the surface of the display device, receiving data from the data storage device included with the object detected on the surface of the display via the wireless communications channel; and

displaying on the display device the data received from the data storage device.

2. The method of claim 1, wherein the wireless communications channel comprises a radiofrequency communications channel, and wherein the second communications channel comprises an infrared or visible optical communications channel.

3. The method of claim 2, wherein communicating with the data storage device included with the object detected on the surface of the display over the optical communications channel comprises sending a request to each data storage device over the wireless communications channel for that data storage device to emit an optical locating message, and then detecting the optical locating message from the object located on the surface of the display.

4. The method of claim 3, wherein the optical locating message is detected via an image capture device disposed within the display device.

5. The method of claim 3, further comprising reading one or more passive optical elements disposed on the object located on the surface of the display and determining an orientation of the object located on the surface of the display device from the relative positions of the one or more passive optical elements and/or the detected optical locating message.

6. The method of claim 2, wherein communicating with the data storage device included with the object located on the surface of the display over the optical communications channel comprises modulating an optical emitter within the display device and receiving a locating message from the object located on the surface of the display confirming receipt of a signal from modulation of the optical emitter.

7. The method of claim 2, wherein displaying on the display device the data received from the data storage device included with the object located on the surface of the display comprises displaying the data at a location associated with the object located on the surface of the display.

8. The method of claim 1, wherein the second communications channel is an electromagnetic communications channel, and wherein communicating with the data storage device included with the object located on the surface of the display over the second communications channel comprises sending a request over the wireless communications channel to the data storage device included with the object located on the surface of the display requesting the data storage device included with the object located on the surface of the display to emit an electromagnetic locating message, and receiving the electromagnetic locating message.

9. The method of claim 1, wherein sending a request to each data storage device detected over the wireless communications channel for the data storage device to emit or receive a locating signal over a second communications channel comprises displaying a locating message image on a portion of the touch-sensitive surface adjacent to the object located on the surface of the display, and sending a request over the wireless communications channel to each data storage device detected on the wireless communications channel to capture an optical data sample via a photodetector on the data storage device and to transfer the optical data sample to the display device over the wireless communications channel.

10. The method of claim 8, wherein the second communications channel is an RFID communications channel.

11. An interactive data transfer and display device, comprising:

a touch-sensitive display system comprising a display, a touch-sensitive mechanism configured to detect objects on the display, and an optical source;

a wireless communications system;

a processor in electrical communication with the display system and the wireless communications system; and

memory comprising machine-readable instructions executable by the processor;

to detect locations of objects placed on display via the touch-sensitive mechanism,

to detect one or more data storage devices within wireless communication range via the wireless communications system,

to distinguish an object comprising a data storage device placed on the display and detected via the wireless communications system from one or more other data storage devices not placed on the display but detected via the wireless communications system by sending a request to each data storage device detected via the wireless communications system to send or receive a locating message over an optical communications channel and detecting the locating message sent from or received by the object comprising the data storage device placed on the display,

to receive via the wireless communications system data from the data storage device of the object placed on the display, and

to display on the display device the data received from the data storage device of the object placed on the display.

12. The display device of claim 11, wherein the touch-sensitive mechanism comprises an image capture device configured to capture an image of the display.

13. The display device of claim 12, wherein displaying the data received from the data storage device of the object placed on the display device includes displaying the data on the display in a location and orientation that is associated with the object placed on the display.

14. The display device of claim 11, wherein the optical source comprises an infrared emitter, and wherein the instructions are executable by the processor to modulate infrared light emitted by the infrared emitter;

to send a request via the wireless communications system to each data storage device detected via the wireless communications system to detect the modulated infrared light via a photodetector on the data storage device; and

to receive a response to the request from the data storage device of the object placed on the display.

15. The display device of claim 11, wherein the optical source comprises a visible light source and an image producing element, and wherein the instructions are executable by the processor to send the request to each data storage device detected via the wireless communication system to send or receive a locating message over the optical communications channel by

displaying an image on the display under the object placed on the display;

and

sending a request via the wireless communications system to all data storage devices detected via the wireless communications system to capture an optical data sample via a photodetector and to transfer the optical data sample to the display device.

16. The display device of claim 11, wherein the touch-sensitive mechanism comprises an image capture device, and wherein the processor is configured to read a passive tag disposed on the data storage device with the image capture device, to display on the display a request for a user to send a confirmation message, and to receive the confirmation message via the wireless communications system.