Systems and methods for detecting a press on a touch-sensitive surface

摘要

Systems and methods that allow the user to rest their fingers on a touch-sensitive surface and make selections on that surface with a pressing action. Touch capacitance sensors that typically provide X and Y location data associated with a user's touch are also used to discern finger pressure in the Z direction. This allows the user to make an actuation on the touch screen by simply pressing harder at a location where they may already be resting their finger(s).

主权项

1. A system comprising:
a touch sensitive surface comprising a plurality of touch capacitive sensors associated with actionable locations on the surface; a processor configured to,
determine a user interaction with the touch sensitive surface as a resting action based on one or more signals received from one or more of the plurality of touch sensors, wherein the signals are above a first threshold value; anddetermine a user interaction with the touch sensitive surface as a press action based on the one or more signals received from one or more of the plurality of touch sensors, wherein the received signals are above a second threshold value; and wherein the processor is further configured to
determine a user interaction as a selection event based on one of the signals having a leading rising edge with a rate-of-change that exceeds a first rate-of-change threshold followed within a predefined amount of time by the signal decreasing in value at a rate-of-change greater than a second rate-of-change threshold.