System and method of calibration of a touch screen display

1. A method comprising:

receiving input comprising selections of one or more keys of a virtual keyboard on a touch screen display of an electronic device, wherein the virtual keyboard has a first side and a second side opposing the first side;

measuring a time between consecutive selections of one key on the first side and one key on the second side, yielding an opposite-side consecutive- selection time;

measuring a time between consecutive selections of a first key and a second key on the first side and a time between consecutive selections of a third key and a fourth key on the second side, yielding a plurality of same-side consecutive-selection times;

when an average time of a plurality of opposite-side consecutive-selection times is less than an average of the same-side consecutive-selection times, utilizing the input for calibrating;

when the input is utilized for calibrating, determining differences between touch locations and associated targets for the selections and subtracting an offset from the differences, thereby providing remainders of differences for the selections; and

calibrating by adjusting a prior calibration based on the remainders when the input is utilized for calibrating.

2. The method according to claim 1 , comprising determining an average of the remainders and wherein calibrating comprises adjusting the prior calibration based on the average of the remainders.

3. The method according to claim 2 , wherein determining an average of the remainders comprises graphing the remainders to provide a distribution curve and determining a mean remainder from the distribution curve.

4. The method according to claim 1 , wherein receiving input comprises receiving selections of characters during typing on a virtual keyboard at the electronic device.

5. The method according to claim 1 , wherein determining differences comprises determining differences in one dimension and calibrating comprises adjusting the prior calibration by the average remainder in the one dimension.

6. The method according to claim 4 , wherein determining differences comprises determining differences in a vertical dimension in the orientation of the electronic device during typing on the virtual keyboard.

7. The method according to claim 1 , comprising filtering the input based on signals from an accelerometer.

8. The method according to claim 1 , comprising filtering the input based on measured vibration at the electronic device during the receiving.

9. The method according to claim 1 , comprising calibrating when a threshold number of selections are received.

10. An electronic device comprising:

a housing;

a touch screen display; and

a processor configured to cause the electronic device to:

receive input comprising selections of one or more keys of a virtual keyboard on the touch screen display, wherein the virtual keyboard has a first side and a second side opposing the first side,

measure a time between consecutive selections of one key on the first side and one key on the second side, yielding an opposite-side consecutive-selection time,

measure a time between consecutive selections of a first key and a second key on the first side and a time between consecutive selections of a third key and a fourth key on the second side, yielding a plurality of same-side consecutive-selection times;

when an average time of a plurality of opposite-side consecutive-selection times is less than an average of the same-side consecutive-selection times, utilize the input for calibrating,

when an input is utilized for calibrating, determine differences between touch locations and associated targets for the selections and subtracting an offset from the differences, thereby providing remainders of differences for the selections, and

calibrate by adjusting a prior calibration based on the remainders when the input is utilized for calibrating.

11. A non-transitory computer-readable medium having computer-readable code embodied therein for execution by a processor in an electronic device having a touch screen display, to receive input comprising selections of one or more keys of a virtual keyboard on the touch screen display, wherein the virtual keyboard has a first side and a second side opposing the first side, measure time between consecutive selections of one key on the first side and one key on the second side, yielding an opposite-side consecutive-selection time, measure a time between consecutive selections of a first key and a second key on the first side and a time between consecutive selections of a third key and a fourth key on the second side, yielding a plurality of same-side consecutive-selection times, when an average time of a plurality of opposite-side consecutive-selection times is less than an average of the same-side consecutive-selection times, utilize the input calibrating, when the input is utilized for calibrating, determine differences between touch locations and associated targets for the selections and subtracting an offset from the differences, thereby providing remainders of differences for the selections, and calibrate by adjusting a prior calibration based on the remainders when the input is utilized for calibrating.

12. The electronic device according to claim 10 ,wherein the differences comprises differences in one dimension and the remainders comprise an average remainder in the one dimension.

13. The electronic device according to claim 10 , comprising an accelerometer coupled to the processor, wherein the input is filtered based on signals from an accelerometer.

14. The electronic device according to claim 10 , wherein the input is filtered by determining if a threshold number of selections are received.

15. A method comprising:

receiving input comprising selections of characters of a virtual keyboard displayed on a touch-sensitive display of an electronic device;

measuring time between a first selection of a first character and a second selection of a second character;

when an average time between consecutive selections of characters on opposing sides of the virtual keyboard is less than an average time between consecutive selections of characters on a same side of the virtual keyboard, utilizing the input for calibrating by determining differences between touch locations and associated targets for the selections and subtracting an offset from the differences, thereby providing remainders of differences for the selections; and

calibrating by adjusting a prior calibration based on the remainders when the input is utilized for calibrating.