User computer device with temperature sensing capabilities and method of operating same

• US 9,103,732 B2
• Filed: 11/30/2011
• Issued: 08/11/2015
• Est. Priority Date: 05/25/2010
• Status: Expired due to Fees

• Current Assignee: Google Technology Holdings LLC (Alphabet Inc.)
• Original Assignee: Google Technology Holdings LLC (Alphabet Inc.)
• Inventors: Alameh, Rachid M., Slaby, Jiri, Krahenbuhl, John Henry, Pais, Martin R.
• Primary Examiner(s): Lo, Kenneth M
• Assistant Examiner(s): Rapp, Chad
• Application Number:
  US13/307,334
• Publication Number:
  US 20120072157A1
• Time in Patent Office: 1,350 Days
• Field of Search: 700/17, 700/83, 700/299, 700/300, 345/173, 345174-179, 715/708
• US Class Current: 1/1
• CPC Class Codes: G01K 13/00 Thermometers specially adapted for specific purposes
• CPC Class Codes: G01K 2213/00 Temperature mapping
• CPC Class Codes: G06F 2203/04105 Pressure sensors for measuring the pressure or force exerted on the touch surface without providing the touch position

Abstract

A user computer device is provided that comprises a temperature sensitive touchscreen having a temperature sensitive user interface comprising multiple thermal energy emitter/detector devices, such as thermocouples. The multiple thermal energy emitter/detector devices are capable both of detecting thermal energy and emitting thermal energy. The temperature sensitive user interface generates thermal patterns that may be transferred to other thermally sensitive electronic devices or that may be used to authenticate the user computer device. The user computer device also can detect and thermally communicate with a thermal energy docking station and, based on thermal recognition, activate applications displayed on the temperature sensitive touchscreen. Further, the user computer device can auto-bias a temperature of the temperature sensitive user interface in order to better assure proper operation of the temperature sensitive user interface in all operating conditions.

Claims

1. A method for biasing a temperature of a temperature sensitive user interface of a user computer device, the method comprising:

detecting one or more of a temperature of the user computer device and an ambient temperature;

determining to pre-bias the temperature sensitive user interface based on the detected one or more temperatures;

in response to determining to pre-bias the temperature sensitive user interface, auto-biasing a temperature of the temperature sensitive user interface; and

detecting, using the temperature sensitive user interface, a user input by determining a temperature differential that is based at least in part on the auto-biased temperature of the temperature sensitive user interface.

2. The method of claim 1, wherein auto-biasing a temperature of the temperature sensitive interface comprises one of increasing a temperature of the temperature sensitive interface and decreasing a temperature of the temperature sensitive interface.

3. The method of claim 1, wherein determining to pre-bias the temperature sensitive user interface comprises:

comparing the detected ambient temperature to a temperature threshold; and

based on the comparison, determining to pre-bias the temperature sensitive user interface.

4. The method of claim 3, wherein determining to pre-bias the temperature sensitive user interface comprises:

determining that the detected ambient temperature is within a pre-determined temperature range; and

in response to determining that the detected ambient temperature is within a pre-determined temperature range, determining to pre-bias the temperature sensitive user interface.

5. The method of claim 1, wherein determining to pre-bias the temperature sensitive user interface comprises:

comparing the temperature of the user computer device to the ambient temperature to produce a temperature difference;

comparing the temperature difference to a temperature differential threshold; and

determining to pre-bias the temperature sensitive user interface based on the comparison of the temperature difference to the temperature differential threshold.

6. The method of claim 1, wherein auto-biasing a temperature of the temperature sensitive user interface comprises applying one or more of a voltage and a current to one or more thermal energy emitter/detector devices.

7. The method of claim 1, wherein auto-biasing a temperature of the temperature sensitive user interface comprises applying one or more of a voltage and a current to one or more thermocouples.

8. The method of claim 1, wherein auto-biasing a temperature of the temperature sensitive user interface comprises adjusting a temperature of one or more thermal energy emitter/detector devices by use of a resistive element.

9. The method of claim 1, wherein auto-biasing a temperature of the temperature sensitive user interface comprises switching the thermal interface between a thermal energy sensing topology and a thermal energy generating topology in successive time periods.

10. The method of claim 1, wherein auto-biasing a temperature of the temperature sensitive user interface comprises utilizing heat generated by hardware components of the user computer device to adjust a temperature of the temperature sensitive user interface.

11. A user computer device comprising:

a housing;

a temperature sensitive user interface having a plurality of thermal energy devices that are configured to one or more of emit thermal energy and detect thermal energy; and

a processor coupled to the temperature sensitive user interface that is configured to detect one or more of a temperature of the user computer device and an ambient temperature, determine to pre-bias the temperature sensitive user interface based on the detected one or more temperatures, in response to determining to pre-bias the temperature sensitive user interface, auto-bias a temperature of the temperature sensitive user interface, and detect a user input using the temperature sensitive user interface by determining a temperature differential that is based at least in part on the auto-biased temperature of the temperature sensitive user interface.

12. The user computer device of claim 11, wherein the processor is configured to auto-bias a temperature of the temperature sensitive interface by one of increasing a temperature of the temperature sensitive interface and decreasing a temperature of the temperature sensitive interface.

13. The user computer device of claim 11, wherein the user computer device comprises an at least one memory device that maintains at least one temperature threshold and wherein the processor is configured to determine to pre-bias the thermal interface by comparing the detected ambient temperature to the temperature threshold and based on the comparison, determine to pre-bias the thermal interface.

14. The user computer device of claim 13, wherein the processor is configured to determine to pre-bias the thermal interface by:

determining that the detected ambient temperature is within a pre-determined temperature range; and

in response to determining that the detected ambient temperature is within a pre-determined temperature range, determining to pre-bias the thermal interface.

15. The user computer device of claim 11, wherein the processor is configured to determine to pre-bias the temperature sensitive user interface by:

comparing the temperature of the user computer device to the ambient temperature to produce a temperature difference;

comparing the temperature difference to a temperature differential threshold; and

determining to pre-bias the temperature sensitive user interface based on the comparison of the temperature difference to the temperature differential threshold.

16. The user computer device of claim 11, wherein the processor is configured to auto-bias a temperature of the thermal interface by applying one or more of a voltage and a current to the plurality of thermal energy devices.

17. The user computer device of claim 11, wherein the plurality of thermal energy devices comprise a plurality of thermocouples and wherein the processor is configured to auto-bias a temperature of the thermal interface by applying one or more of a voltage and a current to the plurality of thermocouples.

18. The user computer device of claim 11, wherein the processor is configured to auto-bias a temperature of the thermal interface by adjusting a temperature of the plurality of thermal energy devices by use of a resistive element.

19. The user computer device of claim 11, wherein the processor is configured to auto-bias a temperature of the thermal interface by switching the plurality of thermal energy devices between a thermal energy sensing topology and a thermal energy generating topology in successive time periods.

20. The user computer device of claim 11, wherein the processor is configured to auto-bias a temperature of the thermal interface by utilizing heat generated by hardware components of the user computer device to adjust a temperature of the temperature sensitive user interface.