Methods and devices for determining user input location using acoustic sensing elements

摘要

Methods and devices are provided for determining location of an input on a surface of a device using an acoustic sensing element. An exemplary method begins by determining an anticipated acoustic response resulting from an output generated by a component of the device at the acoustic sensing element. The method continues by subtracting the anticipated acoustic response from a measured acoustic response at the acoustic sensing element to obtain a nominal acoustic response, and determining the location of the input based on the nominal acoustic response.

主权项

1. A method for determining location of an input on a surface of a device using an acoustic sensing element, the method comprising:
determining an anticipated acoustic response at the acoustic sensing element resulting from an output generated by a component of the device by applying a transfer function for acoustic response attributable to the component of the device at a location of the acoustic sensing element to the output generated by the component of the device; subtracting the anticipated acoustic response from a measured acoustic response at the acoustic sensing element to obtain a nominal acoustic response; determining the location of the input based on the nominal acoustic response; identifying a recalibration condition; and determining an updated transfer function for acoustic response attributable to the component of the device at the location of the acoustic sensing element in response to identifying the recalibration condition.