Method for resetting configuration on a touchscreen interface

• US 20080036742A1
• Filed: 08/08/2006
• Published: 02/14/2008
• Est. Priority Date: 08/08/2006
• Status: Active Grant

• Current Assignee: Carrier Corporation (Carrier Global Corporation)
• Original Assignee: Carrier Corporation (Carrier Global Corporation)
• Inventors: Garmon, Richard W.
• Granted Patent: US 7,825,908 B2
• Time in Patent Office: Days
• US Class Current: 345/173
• CPC Class Codes: G06F 3/0418 for error correction or compensation, e.g. based on parallax, calibration or alignment

Abstract

Factory settings of a touchscreen interface may be restored by cycling power off and on to initiate system startup while simultaneously touching the touchscreen. If a screen touch is in progress at system startup, the user is prompted to discontinue the screen touch, and then is prompted to touch the screen again before a timer expires in order to restore factory calibration settings. If there is no screen touch upon startup, or if the user does not touch the screen to restore factory settings within the timer period, existing user calibration is loaded, and the application is allowed to run with the user calibration settings.

Claims

1. A method of resetting calibration on a touchscreen interface, the method comprising:

upon system startup, using stored factory calibration settings for determination of touch locations on the touchscreen;

determining if a screen touch has occurred during system startup;

prompting a user to interact with the touchscreen to reset calibration to the stored factory calibration settings if a screen touch has occurred during system startup;

selecting stored existing user calibration settings if a screen touch has not occurred during system startup; and

selecting the stored factory calibration settings based upon interaction of the user with the touchscreen in response to the prompting.

2. The method of claim 1 and further comprising:

initiating system startup by turning power off and then on.

3. The method of claim 1, wherein prompting the user to interact comprises:

displaying a message prompting the user to discontinue the screen touch during startup; and

displaying a message prompting the user to again touch the touchscreen to restore the stored factory calibration settings.

4. The method of claim 2 and further comprising:

defining a time period during which the user must touch the touchscreen to restore the stored factory calibration settings.

5. The method of claim 4 and further comprising:

displaying a timer value representative of the time period remaining.

6. A touchscreen interface comprising:

a display;

a touchscreen positioned in front of the display for providing signals representing location of a screen touch;

non-volatile storage for storing factory calibration settings for the touchscreen;

user calibration storage for storing user calibration settings for the touchscreen; and

a processor programmed to run an application that accepts screen touch inputs from a user from the touchscreen and that provides display outputs to the display, the processor responsive to screen touches during system startup to select either the user calibration settings or the factory calibration settings for use by the application in calculating screen touch locations in response to the signals from the touchscreen.

7. The thouchscreen interface of claim 6, wherein the processor determines whether a screen touch has occurred during startup and provides display outputs to prompt a user to select either the user calibration settings or the factory calibration settings.

8. The touchscreen interface of claim 7, wherein the processor, in response to a detected screen touch during startup, provides a display output prompting the user to discontinue the screen touch.

9. The touchscreen interface of claim 8, wherein the processor, upon detecting that the user has discontinued the screen touch, provides a display output prompting the user to again touch the touchscreen to select the factory calibration settings.

10. The touchscreen interface of claim 9, wherein the processor selects the factory calibration settings if it detects a screen touch within a time period following prompting the user to again touch the touchscreen.

11. The touchscreen interface of claim 10, wherein the processor provides a display output to cause the display to display a timer value representing remaining time in the time period.

12. The touchscreen interface of claim 10, wherein the processor selects the user calibration settings if a screen touch is not detected during the time period.

13. The touchscreen interface of claim 6, wherein the processor uses the factory calibration settings when detecting screen touches upon system startup.

14. The touchscreen interface of claim 6, wherein the processor selects the user calibration settings if a screen touch is not detected upon system startup.

15. A method of resetting calibration of a touchscreen interface, the method comprising:

cycling power off and on to initiate system startup;

detecting a first screen touch using stored factory calibration settings;

prompting a user to discontinue the first screen touch;

prompting the user to produce a second screen touch to select the factory calibration settings;

selecting the factory calibration settings for use in determining screen touch locations if the second screen touch is detected; and

selecting stored user calibration settings for use in determining screen touch locations if either the first screen touch or the second screen touch is not detected.

16. The method of claim 15, wherein prompting the user to discontinue the first screen touch comprises displaying a message on a display associated with the touchscreen.

17. The method of claim 16, wherein prompting the user to produce a second screen touch comprises displaying a message and a timer value on the display.

18. The method of claim 17, wherein the timer value is representative of time remaining within which to produce the second screen touch in order to select the factory calibration settings.

19. The method of claim 15, wherein detecting the first screen touch is based upon the factory calibration settings.

20. The method of claim 15, wherein the first and second screen touches are detected if the user touches anywhere on the touchscreen.