COMPENSATING FOR TRANSIENT TEMPERATURE EFFECTS ON ULTRASONIC SENSORS

摘要

A method of controlling an ultrasonic fingerprint sensor may involve receiving a first contact indication that a target object is in contact with a surface. The surface may be an ultrasonic fingerprint sensor surface or a surface of a device proximate an area in which the ultrasonic fingerprint sensor resides. In some examples, the method may involve: receiving a first removal indication that the target object has been removed from the surface; obtaining, subsequent to receiving the first removal indication, a first temperature measurement indicating a first temperature of at least a portion of the ultrasonic fingerprint sensor; determining at least one new ultrasonic fingerprint sensor parameter based, at least in part, on the first temperature; and updating at least one setting of the ultrasonic fingerprint sensor based, at least in part, on the new ultrasonic fingerprint sensor parameter.