METHODS AND SYSTEMS FOR POCKET MODE DETECTION

1 . A method for operating an electronic device, the method comprising:

measuring, by a touchscreen controller of the electronic device, a first plurality of touch strengths at a first plurality of touch nodes, the first plurality of touch nodes located within a first region of a touch sensing panel of the electronic device, the touch sensing panel being coupled to the touchscreen controller; and

determining, by the touchscreen controller, whether the electronic device is in a pocket mode based on the first plurality of touch strengths.

2 . The method of claim 1 , wherein the first region is a fraction of a full screen of the touch sensing panel.

3 . The method of claim 1 , further comprising:

determining, by the touchscreen controller, a first percentage of the first plurality of touch nodes having touch strengths larger than a first threshold; and

determining, by the touchscreen controller, a first peak value being a maximum of the first plurality of touch strengths, and wherein the touchscreen controller determines that the electronic device is in the pocket mode upon determining that the first percentage is larger than a second threshold and the first peak value is smaller than a third threshold.

4 . The method of claim 3 , wherein the touchscreen controller determines that the electronic device is not in the pocket mode upon determining that either the first percentage is smaller than the second threshold, or the first peak value is larger than a third threshold, or both.

5 . The method of claim 1 , further comprising:

upon determining that the electronic device is not in the pocket mode based on the first plurality of touch strengths, determining a second plurality of touch strengths at a second plurality of touch nodes, the second plurality of touch nodes located within a second region of the touch sensing panel; and

determining whether the electronic device is in the pocket mode based on the second plurality of touch strengths.

6 . The method of claim 5 , further comprising:

determining a second percentage of the second plurality of touch nodes having touch strengths larger than a fourth threshold; and

determining a second peak value being a maximum of the second plurality of touch strengths, and wherein the touchscreen controller determines that the electronic device is in the pocket mode upon determining that the second percentage is larger than a fifth threshold and the second peak value is smaller than a sixth threshold.

7 . The method of claim 5 , wherein the first region is located at the top of the touch sensing panel, and wherein the second region is a full screen of the touch sensing panel.

8 . The method of claim 1 , wherein the touch sensing panel includes a plurality of transmitting (TX) touch sensors and a plurality of receiving (RX) touch sensors, and wherein each of the first plurality of touch nodes is determined by one of the plurality of TX touch sensors and one of the plurality of RX touch sensors.

9 . The method of claim 1 , wherein each of the first plurality of touch strengths measured at a corresponding touch node is determined in accordance with a mutual capacitance between a TX touch sensor and a RX touch sensor associated with the corresponding touch node.

10 . The method of claim 1 , further comprising:

transmitting, by the touchscreen controller, an indication to an application processor coupled to the touchscreen controller, the indication indicating whether the electronic device is in the pocket mode.

11 . The method of claim 1 , wherein the touchscreen controller determines whether the electronic device is in the pocket mode based on the first plurality of touch strengths and measurements generated by at least one ambient sensor of the electronic device, the at least one ambient sensor being either a proximity sensor or a light sensor, and wherein upon determining that the electronic device is not in the pocket mode based on the measurements generated by the at least one ambient sensor, the touchscreen controller determines whether the electronic device is in the pocket mode based on the first plurality of touch strengths.

12 . A touchscreen controller coupled to a touch sensing panel of an electronic device, the touchscreen controller comprising:

a processor; and

a memory for storing a program to be executed by the processor, the program comprising instructions when executed cause the touchscreen controller to:

measure a first plurality of touch strengths at a first plurality of touch nodes, the first plurality of touch nodes located within a first region of the touch sensing panel; and

determine whether the electronic device is in a pocket mode based on the first plurality of touch strengths.

13 . The touchscreen controller of claim 12 , wherein the first region is a fraction of a full screen of the touch sensing panel.

14 . The touchscreen controller of claim 12 , wherein the program further comprises instructions when executed cause the touchscreen controller to:

determine a first percentage of the first plurality of touch nodes having touch strengths larger than a first threshold; and

determine a first peak value being a maximum of the first plurality of touch strengths, and wherein the touchscreen controller determines that the electronic device is in the pocket mode upon determining that the first percentage is larger than a second threshold and the first peak value is smaller than a third threshold.

15 . The touchscreen controller of claim 14 , wherein the touchscreen controller determines that the electronic device is not in the pocket mode upon determining that either the first percentage is smaller than the second threshold, or the first peak value is larger than a third threshold, or both.

16 . The touchscreen controller of claim 12 , wherein the program further comprises instructions when executed cause the touchscreen controller to:

upon determining that the electronic device is not in the pocket mode based on the first plurality of touch strengths, determine a second plurality of touch strengths at a second plurality of touch nodes, the second plurality of touch nodes located within a second region of the touch sensing panel; and

determine whether the electronic device is in the pocket mode based on the second plurality of touch strengths.

17 . The touchscreen controller of claim 16 , wherein the program further comprises instructions when executed cause the touchscreen controller to:

determine a second percentage of the second plurality of touch nodes having touch strengths larger than a fourth threshold; and

determine a second peak value being a maximum of the second plurality of touch strengths, and wherein the touchscreen controller determines that the electronic device is in the pocket mode upon determining that the second percentage is larger than a fifth threshold and the second peak value is smaller than a sixth threshold.

18 . The touchscreen controller of claim 16 , wherein the first region is located at the top of the touch sensing panel, and wherein the second region is a full screen of the touch sensing panel.

19 . The touchscreen controller of claim 12 , wherein the touch sensing panel includes a plurality of transmitting (TX) touch sensors and a plurality of receiving (RX) touch sensors, and wherein each of the first plurality of touch nodes is determined by one of the plurality of TX touch sensors and one of the plurality of RX touch sensors.

20 . The touchscreen controller of claim 12 , wherein each of the first plurality of touch strengths measured at a corresponding touch node is determined in accordance with a mutual capacitance between a TX touch sensor and a RX touch sensor associated with the corresponding touch node.

21 . The touchscreen controller of claim 12 , wherein the program further comprises instructions when executed cause the touchscreen controller to:

transmit an indication to an application processor coupled to the touchscreen controller, the indication indicating whether the electronic device is in the pocket mode.

22 . The touchscreen controller of claim 12 , wherein the touchscreen controller determines whether the electronic device is in the pocket mode based on the first plurality of touch strengths and measurements generated by at least one ambient sensor of the electronic device, the at least one ambient sensor being either a proximity sensor or a light sensor, and wherein upon determining that the electronic device is not in the pocket mode based on the measurements generated by the at least one ambient sensor, the touchscreen controller determines whether the electronic device is in the pocket mode based on the first plurality of touch strengths.

23 . An electronic device comprising:

a touch sensing panel including a plurality of transmitting (TX) touch sensors and a plurality of receiving (RX) touch sensors, and

a touchscreen controller coupled to the touch sensing panel, the touchscreen controller including:

a processor; and

a memory for storing a program to be executed by the processor, the program comprising instructions when executed cause the touchscreen controller to:

measure a first plurality of touch strengths at a first plurality of touch nodes, the first plurality of touch nodes located within a first region of the touch sensing panel, each of the first plurality of touch node determined by one of the plurality of TX touch sensors and one of the plurality of RX touch sensors; and

determine whether the electronic device is in a pocket mode based on the first plurality of touch strengths.

24 . The electronic device of claim 23 , further including an application processor coupled to the touchscreen controller, wherein the program further comprises instructions when executed cause the touchscreen controller to:

transmit an indication to the application processor, the indication indicating whether the electronic device is in the pocket mode.