An acoustic biometric touch scanner device and method is disclosed. In one aspect, an
acoustic fingerprint sensing device includes an array of ultrasonic transducers configured to …

A touch sensor chip can comprise an ultrasound sensor layer comprising an array of
ultrasonic transducers. The array of ultrasonic transducers can comprise one or more …

An ultrasound input device can be coupled to a material layer having an external surface
located opposite the mate rial layer from the ultrasound input device. The ultrasound input …

Touch events can be detected using an ultrasound input device coupled to a surface, such
as a surface of a piece of furniture or electronic device. The ultrasound input device can …

Touch events can be detected using an ultrasound input device coupled to a surface, such
as a surface of a piece of furniture or electronic device. The ultrasound input device can …

An ultrasound circuit comprising a single-ended trans-impedance amplifier (TIA) is
described. The TIA is coupled to an ultrasonic transducer to amplify an electrical signal …

An ultrasound device is describe in which analog ultrasonic transducer output signal are
directly converted to digital signals. The ultrasound device includes microfabricated …

An ultrasound circuit comprising a multi-stage trans-impedance amplifier (TIA) is described.
The TIA is coupled to an ultrasonic transducer to amplify an electrical signal generated by …

An ultrasound circuit comprising a trans-impedance amplifier (TIA) with built-in time gain
compensation functionality is described. The TIA is coupled to an ultrasonic transducer to …

Methods, systems, and devices are provided for generating biometric signatures. The
system can detect, at an electronic device, one or more biometric acoustic signals. The …