Touch Sensor with Lookup Table

1 . A method comprising:

detecting a touch or proximity input at a first location within a touch-sensitive area of a touch sensor;

comparing the first location with an entry in a look-up table, the entry associated with the first location, the entry comprising a pre-determined location within the touch-sensitive area of the touch sensor for the first location, the pre-determined location being potentially different from the first location; and

based on the comparison, identifying the pre-determined location as being intended by a user for the touch or proximity input.

2 . The method of claim 1 , wherein the pre-determined location was generated from an initialization process comprising:

detecting one or more first coordinates of a pre-determined touch or proximity pattern within the touch-sensitive area of the touch sensor, the touch-sensitive area comprising a plurality of coordinates;

comparing the first coordinates with one or more second coordinates of the pre-determined touch or proximity pattern within the touch-sensitive area; and

storing the second coordinates in entries of the look-up table, each of the entries corresponding to one of the first coordinates and one of the second coordinates.

3 . The method of claim 1 , wherein the look-up table is stored in a computer-readable non-transitory storage medium.

4 . The method of claim 2 , wherein the second coordinates are coordinates of intended touch or proximity locations of the pre-determined pattern of touches.

5 . The method of claim 1 , further comprising:

processing by logic the pre-determined location.

6 . The method of claim 2 wherein the first coordinates are a subset of the plurality of coordinates of the touch-sensitive area.

7 . One or more computer-readable non-transitory storage media embodying logic that is operable when executed to:

detect a touch or proximity input at a first location within a touch-sensitive area of a touch sensor;

compare the first location with an entry in a look-up table, the entry associated with the first location, the entry comprising a pre-determined location within the touch-sensitive area of the touch sensor for the first location, the pre-determined location being potentially different from the first location; and

based on the comparison, identify the pre-determined location as being intended by a user for the touch or proximity input.

8 . The media of claim 7 , wherein the pre-determined location was generated from an initialization process comprising:

detecting one or more first coordinates of a pre-determined touch or proximity pattern within the touch-sensitive area of the touch sensor, the touch-sensitive area comprising a plurality of coordinates;

comparing the first coordinates with one or more second coordinates of the pre-determined touch or proximity pattern within the touch-sensitive area; and

storing the second coordinates in entries of the look-up table, each of the entries corresponding to one of the first coordinates and one of the second coordinates.

9 . The media of claim 7 , wherein the look-up table is stored in a computer-readable non-transitory storage medium.

10 . The media of claim 8 , wherein the second coordinates are coordinates of intended touch or proximity locations of the pre-determined pattern of touches.

11 . The media of claim 7 , the logic further operable when executed to process the pre-determined location.

12 . The media of claim 8 wherein the first coordinates are a subset of the plurality of coordinates of the touch-sensitive area.

13 . A touch controller comprising one or more computer-readable non-transitory storage media embodying logic that is operable when executed to:

detect a touch or proximity input at a first location within a touch-sensitive area of a touch sensor;

compare the first location with an entry in a look-up table, the entry associated with the first location, the entry comprising a pre-determined location within the touch-sensitive area of the touch sensor for the first location, the pre-determined location being potentially different from the first location; and

based on the comparison, identify the pre-determined location as being intended by a user for the touch or proximity input.

14 . The touch controller of claim 13 , wherein the pre-determined location was generated from an initialization process comprising:

detecting one or more first coordinates of a pre-determined touch or proximity pattern within the touch-sensitive area of the touch sensor, the touch-sensitive area comprising a plurality of coordinates;

comparing the first coordinates with one or more second coordinates of the pre-determined touch or proximity pattern within the touch-sensitive area; and

storing the second coordinates in entries of the look-up table, each of the entries corresponding to one of the first coordinates and one of the second coordinates.

15 . The touch controller of claim 13 , wherein the look-up table is stored in a computer-readable non-transitory storage medium.

16 . The touch controller of claim 14 , wherein the second coordinates are coordinates of intended touch or proximity locations of the pre-determined pattern of touches.

17 . The touch controller of claim 13 , the logic further operable when executed to process the pre-determined location.

18 . The touch controller of claim 14 wherein the first coordinates are a subset of the plurality of coordinates of the touch-sensitive area.

19 . The touch controller of claim 14 , wherein the initialization process was conducted in the presence of noise.

20 . The touch controller of claim 13 , wherein the touch controller and touch sensor are part of a device.