METHOD FOR CONTROLLING DISPLAY OF ELECTRONIC DEVICE AND ELECTRONIC DEVICE USING THE SAME

• US 20130314349A1
• Filed: 05/20/2013
• Published: 11/28/2013
• Est. Priority Date: 05/24/2012
• Status: Active Grant

• Current Assignee: HTC Corporation
• Original Assignee: HTC Corporation
• Inventors: Chien, Chih-Ling, Huang, Hung-Yi
• Granted Patent: US 9,465,460 B2
• Time in Patent Office: Days
• US Class Current: 345/173
• CPC Class Codes: G06F 1/1626 with a single-body enclosure integrating a flat display, e.g. Personal Digital Assistants [PDAs]
• CPC Class Codes: G06F 1/32 Means for saving power
• CPC Class Codes: G06F 1/324 by lowering clock frequency
• CPC Class Codes: G06F 3/041 Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
• CPC Class Codes: G06F 3/04883 for inputting data by handwriting, e.g. gesture or text
• CPC Class Codes: H03G 7/00 Volume compression or expansion in amplifiers frequency dependent H03G9/00
• CPC Class Codes: Y02D 10/00 Energy efficient computing, e.g. low power processors, power management or thermal management

Abstract

A method for controlling a display of an electronic device is proposed along with the electronic device using the same. The electronic device has the display and a touch sensor disposed on the display. The method includes the following steps. The touch sensor is driven when the display is not driven to display an image. A sensing signal is received from the touch sensor. First information is determined based on the sensing signal. The first information is compared with first predetermined information. The display is driven to display the image when the first information matches the predetermined information.

Claims

1. A method for controlling a display of an electronic device having and the display and a touch sensor disposed on the display, comprising:

driving the touch sensor when the display is not driven to display an image receiving a sensing signal from the touch sensor;

determining first information based on the sensing signal;

comparing the first information with first predetermined information; and

driving the display to display the image when the first information matches the first predetermined information.

2. The method of claim 1, wherein the sensing signal is generated by the touch sensor when an object touches on the touch sensor or hover above the touch sensor.

3. The method of claim 1, wherein the first information is determined by calculating the sensing signal over a period of time.

4. The method of claim 1, wherein the first information is determined by calculating the sensing signal when an object touches on the touch sensor or hovers above the touch sensor.

5. The method of claim 1, wherein the step of driving the touch sensor when the display is not driven to display the image comprising driving a portion of the touch sensor to generate the sensing signal.

6. The method of claim 1, wherein the step of driving the touch sensor when the display is not driven to display the image further comprises partially charging a plurality of sensing elements on the touch sensor to generate the sensing signal.

7. The method of claim 1, wherein the step of driving the touch sensor when the display is not driven to display image further comprises changing a driving frequency of the touch sensor.

8. The method of claim 1, wherein after the step of driving the display to display the image, the method further comprises:

receiving the sensing signal from the touch sensor while the display is displaying the image;

determining second information based on the sensing signal;

comparing the second information with second predetermined information; and

disabling the display from displaying the image when the second information matches the second predetermined information.

9. The method of claim 8, wherein the step of disabling the display from displaying the image comprises disabling a backlight module of the display.

10. The method of claim 8, wherein the step of disabling the display from displaying comprises controlling a driving circuitry of the electronic device to stop driving the display to display the image.

11. The method of claim 8, wherein the first predetermined information is the same as the second predetermined information.

12. The method of claim 8, wherein before the step of receiving the sensing signal from the touch sensor further comprises fully charging a plurality of sensing elements on the touch sensor to generate the sensing signal.

13. The method of claim 8, wherein before the step of receiving the sensing signal from the touch sensor further comprises changing a driving frequency of the touch sensor.

14. The method of claim 1, further comprises:

sensing a property of an object or an environment external to the electronic device;

generating a sensing information based on the sensed property; and

determining whether to drive the touch sensor based on the sensing information.

15. The method of claim 14, wherein the sensing information is an electrical signal as a function of the property of an object sensed by the sensor or the environment external to the electronic device imposed on the sensor.

27. A computer-readable medium, recording program instructions for performing the method as claimed in claim 1.

16. An electronic device, comprising:

a display, configured to display an image;

a touch sensor, disposed on the display and configured to detect a contact on the touch sensor and generated a sensing signal when the display is not driven to display the image;

a driving circuitry, coupled to the display and the touch sensor, and configured to drive the display and the touch sensor;

a sensing circuitry, coupled to the touch sensor to receive the sensing signal and determining a first information based on the received sensing signal; and

a processing unit, coupled to the driving circuitry and the sensing circuitry and comparing the first information with a first predetermined information;

wherein when the first information matches the first predetermined information, the driving circuitry drives the display to display the image.

17. The electronic device of claim 16, wherein the contact is provided by any combination of one or more finger, a face, a palm, a pen or a hover-based input to the touch sensor.

18. The electronic device of claim 16, wherein the touch sensor comprises a plurality of sensing elements arranged in rows and columns, and the driving circuitry drives a portion of the sensing elements.

19. The electronic device of claim 16, wherein the sensing signal is generated by the touch sensor when an object touches on the touch sensor or hover above the touch sensor.

20. The electronic device of claim 16, wherein the first information is determined by calculating the sensing signal over a period of time.

21. The electronic device of claim 16, wherein the touch sensor comprises a plurality of sensing elements arranged in rows and columns, and the driving circuitry partially charges the sensing elements.

22. The electronic device of claim 16, wherein the driving circuitry changes a driving frequency of the touch sensor when the display is not driven to display the image.

23. The electronic device of claim 16, wherein when the display is driven to display the image, the sensing circuitry receives the sensing signal and determines a second information based on the sensing signal;

the processing unit compares the second information with a second predetermined information; and

the driving circuitry disables the display from displaying the image when the second information matches the second predetermined information.

24. The electronic device of claim 23, wherein the first predetermined information is the same as the second predetermined information.

25. The electronic device of claim 16, further comprises a sensor, coupled to the processing unit, sensing a property of an object or an environment external to the electronic device and generating a sensing information based on the sensed property and wherein the processing unit determines whether to drive the touch sensor based on the sensing information when the display is not driven to display the image.

26. The electronic device of claim 25, wherein the sensing information is an electrical signal as a function of the property of an object sensed by the sensor or the environment external to the electronic device imposed on the sensor.