Systems and methods for using hover information to predict touch locations and reduce or eliminate touchdown latency

A method for using a touch sensing system capable of sensing location of a finger or object above a touch surface in an electronic device to inform a touch response system in the electronic device of a touch event in advance of an actual touch event, the method comprising:

• storing a model of user interaction with a touch surface, wherein the model relies at least in part on trajectory;
• sensing at least one current user input via the touch sensing system;
• creating in the electronic device data representative of the sensed at least one current user input, the data reflecting hover information;
• applying the model of user interaction to the data representative of current user input to create data reflecting a prediction of a future touch event;
• providing to a touch response system an indication of the future touch event prior to occurrence of the actual touch event;
• and
• wherein the model comprises a model of a liftoff phase.

A method for using a touch sensing system capable of sensing location of a finger or object above a touch surface in an electronic device to inform a touch response system in the electronic device of a touch event in advance of an actual touch event, the method comprising:

• storing a model of user interaction with a touch surface, wherein the model relies at least in part on trajectory;
• sensing at least one current user input via the touch sensing system;
• creating in the electronic device data representative of the sensed at least one current user input, the data reflecting hover information;
• applying the model of user interaction to the data representative of current user input to create data reflecting a prediction of a future touch event;
• providing to a touch response system an indication of the future touch event prior to occurrence of the actual touch event;
• and
• wherein the step of applying the model of user input to the data representative of current user input comprises fitting a parabola to an approach trajectory of a finger or object and predicting a touch point by determining an intersection of the fitted parabola with a display of the electronic device.

A method for using a touch sensing system capable of sensing location of a finger or object above a touch surface in an electronic device to inform a touch response system in the electronic device of a touch event in advance of an actual touch event, the method comprising:

• storing a model of user interaction with a touch surface, wherein the model relies at least in part on system latency;
• sensing at least one current user input via the touch sensing system;
• creating in the electronic device data representative of the sensed at least one current user input, the data reflecting hover information;
• applying the model of user interaction to the data representative of current user input to create data reflecting a prediction of a future touch event;
• and,
• providing to a touch response system an indication of the future touch event prior to occurrence of the actual touch event.

A method for using a touch sensing system capable of sensing location of a finger or object above a touch surface in an electronic device to inform a touch response system in the electronic device of a touch event in advance of an actual touch event, the method comprising:

• storing a model of user interaction with a touch surface, wherein the model relies at least in part on trajectory, velocity, movement and system latency;
• sensing at least one current user input via the touch sensing system;
• creating in the electronic device data representative of the sensed at least one current user input, the data reflecting hover information;
• applying the model of user interaction to the data representative of current user input to create data reflecting a prediction of a future touch event;
• and,
• providing to a touch response system an indication of the future touch event prior to occurrence of the actual touch event.