Method for touch detection enhancement based on identifying a cover film on a touch-screen
First Claim
1. A method comprising:
- storing a first set of classifier data and a second set of classifier data, the first set being different from the second set, wherein each of the first set and the second set is configured to differentiate between different types of touches on a touch sensitive screen including a capacitive based sensor, and wherein the first set is adapted to differentiate between different types of touches on the touch sensitive screen with no cover film added on the screen and the second set is adapted to differentiate between different types of touches when a cover film is added to the screen;
identifying the cover film on the screen based on output from at least one conductive line or at least one array of conductive electrodes of the capacitive based sensor;
detecting an effective thickness of the cover film based on output from the at least one conductive line or the at least one array of conductive electrodes of the capacitive based sensor, wherein the effective thickness is actual thickness of the cover film or another parameter that represents a level of degradation of the touch signal due to overall physical properties of the cover film;
selecting the second set of classifier data based on the identifying; and
reporting a touch interaction based on the second set of classifier data.
1 Assignment
0 Petitions
Accused Products
Abstract
A first set of classifier data and a different second set of classifier data are stored. Each of the first set and the second set is configured to differentiate between different types of touches on a touch sensitive screen including a capacitive based sensor. The first set is adapted to differentiate between different types of touches on a touch sensitive screen with no cover film added on the screen and the second set is adapted to differentiate between different types of touches when a cover film is added to the screen. The cover film is identified on the screen based on output from at least one conductive line or at least one array of conductive electrodes of the capacitive based sensor. The second set of classifier data is selected based on the identifying. A touch interaction is reported based on the second set of classifier data.
21 Citations
19 Claims
-
1. A method comprising:
- storing a first set of classifier data and a second set of classifier data, the first set being different from the second set, wherein each of the first set and the second set is configured to differentiate between different types of touches on a touch sensitive screen including a capacitive based sensor, and wherein the first set is adapted to differentiate between different types of touches on the touch sensitive screen with no cover film added on the screen and the second set is adapted to differentiate between different types of touches when a cover film is added to the screen;
identifying the cover film on the screen based on output from at least one conductive line or at least one array of conductive electrodes of the capacitive based sensor;
detecting an effective thickness of the cover film based on output from the at least one conductive line or the at least one array of conductive electrodes of the capacitive based sensor, wherein the effective thickness is actual thickness of the cover film or another parameter that represents a level of degradation of the touch signal due to overall physical properties of the cover film;selecting the second set of classifier data based on the identifying; and
reporting a touch interaction based on the second set of classifier data. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
- storing a first set of classifier data and a second set of classifier data, the first set being different from the second set, wherein each of the first set and the second set is configured to differentiate between different types of touches on a touch sensitive screen including a capacitive based sensor, and wherein the first set is adapted to differentiate between different types of touches on the touch sensitive screen with no cover film added on the screen and the second set is adapted to differentiate between different types of touches when a cover film is added to the screen;
-
10. A computing device comprising:
- an electronic display;
a capacitive based sensor, wherein the sensor is integrated with the display;
a digitizer circuit, wherein the circuit is in electrical communication with the sensor and is configured to operate the sensor;
a cover film detection and correction engine, wherein the engine is configured to detect a cover film placed on the display and to compensate of changes in output from the sensor based on a presence of the cover film; and
a central processing unit, wherein the central processing unit is configured to control the electronic display based on user input obtained from the digitizer circuit;
wherein one of the circuit, engine and processor is configured to;
store a first set of classifier data and a second set of classifier data, the first set being different from the second set, wherein each of the first set and the second set is configured to differentiate between different types of touches on a touch sensitive screen and wherein the first set is adapted to differentiate between different types of touches on the touch sensitive screen with no cover film added on the screen and the second set is adapted to differentiate between different types of touches when a cover film is added to the screen;
identify the cover film on the screen based on output from at least one conductive line or at least one array of conductive electrodes of the capacitive based sensor;
select the second set of classifier data based on the identifying; and
report a touch interaction based on the second set of classifier data. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
- an electronic display;
-
19. A method comprising:
-
storing a first set of classifier data and a second set of classifier data, the first set being different from the second set, wherein each of the first set and the second set is configured to differentiate between different types of touches on a touch sensitive screen including a capacitive based sensor, and wherein the first set is adapted to differentiate between different types of touches on a touch sensitive screen with no cover film added on the screen and the second set is adapted to differentiate between different types of touches when a cover film is added to the screen; identifying the cover film on the screen based on output from at least one conductive line or at least one array of conductive electrodes of the capacitive based sensor, wherein the identifying is based on a detecting an increase in a ratio between a relative touch effect obtained while the touch sensitive screen is in an ungrounded state and while the touch sensitive screen is in a grounded state; selecting the second set of classifier data based on the identifying; and reporting a touch interaction based on the second set of classifier data.
-
Specification