Communication with a touch screen

• US 8,269,746 B2
• Filed: 03/29/2007
• Issued: 09/18/2012
• Est. Priority Date: 11/27/2006
• Status: Active Grant

• Current Assignee: Microsoft Technology Licensing LLC (Microsoft Corporation)
• Original Assignee: Microsoft Corporation
• Inventors: Hodges, Stephen, Izadi, Shahram, Butler, David Alexander, Rrustemi, Alban
• Primary Examiner(s): Lao, Lun-Yi
• Assistant Examiner(s): Hegarty, Kelly B
• Application Number:
  US11/693,670
• Publication Number:
  US 20080122792A1
• Time in Patent Office: 2,000 Days
• Field of Search: 345156-158, 345/173, 345/175, 345/176, 345/177, 345/179, 345/104, 178 1801- 1904, 178/19.05, 715/702, 715/740, 715/753, 715/761, 715/764, 463/37, 356/498
• US Class Current: 345/175
• CPC Class Codes: G06F 2203/04109 FTIR in optical digitiser, i.e. touch detection by frustrating the total internal reflection within an optical waveguide due to changes of optical properties or deformation at the touch location
• CPC Class Codes: G06F 3/0421 by interrupting or reflecting a light beam, e.g. optical touch-screen
• CPC Class Codes: G06F 3/04883 for inputting data by handwriting, e.g. gesture or text

Abstract

A touch panel is arranged to enable communication using infrared signals with nearby devices. The touch panel includes an array of infrared sensors, arranged parallel to the touchable surface of the panel and at least one of the sensors is capable of detecting an infrared signal received from a nearby device.

Claims

1. A method comprising:

detecting a signal at one or more of an array of infrared sensors associated with a touch panel;

detecting a plurality of parameters of the signal, wherein at least a first parameter includes a shape of the signal that distinguishes a device from a plurality of devices within a proximity to the touch panel and at least a second parameter includes an intensity of the signal;

using time division multiplexing, allocating a time period to the device such that the touch panel is configured to receive one or more data transmissions solely from the device during the time period;

during the time period, determining a physical location of the device with respect to the touch panel and a distance between the device and the touch panel based at least in part on the shape of the signal and the intensity of the signal;

detecting a gesture associated with movement of the device within the proximity to the touch panel;

normalizing the gesture based at least in part on the physical location of the device and the distance between the device and the touch panel; and

changing a display on the touch panel based at least in part on the normalized gesture.

2. A method according to claim 1, wherein changing the display on the touch panel comprises:

displaying an icon on the touch panel dependent upon a location of the one or more of the array of infrared sensors.

3. A method according to claim 1, wherein changing the display on the touch panel comprises:

controlling an application running on the touch panel.

4. A method according to claim 3, wherein the signal comprises data and the application is a multi-user application, the method further comprising:

saving the data; and

controlling the multi-user application in accordance with the saved data.

5. A method comprising:

detecting a signal at one or more of an array of infrared sensors associated with a touch panel;

determining at least one parameter of the signal, wherein the at least one parameter includes a shape of the signal that distinguishes a device from a plurality of devices within a proximity to the touch panel;

identifying the device from the plurality of devices based on the shape of the signal;

using time division multiplexing, allocating a time period to the device such that the touch panel is configured to receive one or more data transmissions solely from the device during the time period;

during the time period, determining a physical location of the device with respect to the touch panel and a distance between the device and the touch panel based at least in part on the shape of the signal;

detecting a gesture associated with movement of the device within the proximity to the touch panel;

normalizing the gesture based at least in part on the physical location of the device and the distance between the device and the touch panel; and

controlling an application currently being displayed on the touch panel based at least in part on the normalized gesture.

6. A method according to claim 5, wherein controlling the application currently being displayed on the touch panel comprises displaying an icon on the touch panel.

7. A method according to claim 5, wherein the signal comprises data and the application is a multi-user application, the method further comprising:

saving the data; and

controlling the multi-user application in accordance with the saved data.

8. A touch panel system comprising:

one or more processors; and

a memory storing instructions that, when executed by the one or more processors, perform operations comprising;

detecting a signal at one or more of an array of infrared sensors associated with a touch panel;

determining at least one parameter of the signal, wherein the at least one parameter includes an intensity of the signal;

identifying a device from a plurality of devices based on the intensity of the signal;

using time division multiplexing, allocating a time period to the device such that the touch panel is configured to receive one or more data transmissions solely from the device during the time period;

during the time period, determining a physical location of the device with respect to the touch panel and a distance between the device and the touch panel based at least in part on the intensity of the signal;

detecting a gesture associated with movement of the device within a proximity to the touch panel;

normalizing the gesture based at least in part on the physical location of the device and the distance between the device and the touch panel; and

controlling an application currently being displayed on the touch panel based at least in part on the normalized gesture.

9. A touch panel system according to claim 8, wherein controlling the application currently being displayed on the touch panel comprises displaying an icon on the touch panel.

10. A touch panel system according to claim 8, wherein the signal comprises data and the application is a multi-user application, the instructions further performing operations comprising:

saving the data; and

controlling the multi-user application in accordance with the saved data.