Qualcomm Incorporated

Nathan Felix Altman

Sandeep Louis D'Souza

Meir Agassy

Masoud Roham

Vadim Winebrand

Lennart Karl Mathe

Gilad Bornstein

Bo-Ren Wang

Yizhaq Abudi

Suryaprakash Ganti

Kostadin Dimitrov Djordjev

David William Burns

Suhail Jalil

Lennart Karl-Axel Mathe

Raj Kumar

David Chandler

Mohamed Ahmed

Ashish Hinger

Livingstone Song

Niccolo Andrew Padovani

Sherman Sebastian Antao

Xin Fan

Syed Fawad Ahmad

Paul Penchin Pan

Micah Timothy Lawrence

Arye Lerner

Jong Soo Kim

Deep Bhatia

Sameer Wadhwa

Hasib Siddiqui

Javier Frydman

Joshua Dickenson Hershberg

Gabriel Berelejis

Gal Rotem

Bence Major

Boaz Castro

Wayne Fenton

Liran Galili

Adi Hendel

Some disclosed methods involve obtaining current A-line data corresponding to reflections of ultrasonic waves from a target object detected by a single receiver pixel, obtaining current ultrasonic fingerprint image data corresponding to reflections of ultrasonic waves from a target object surface, obtaining previously-obtained A-line data that was previously obtained from an authorized user, and obtaining previously-obtained ultrasonic fingerprint image data that was previously obtained from the authorized user. Some disclosed methods involve estimating, based at least in part on the current A-line data, the previously-obtained A-line data, the current ultrasonic fingerprint image data and the previously-obtained ultrasonic fingerprint image data, whether the target object is a finger of the authorized user. The estimation may involve an anti-spoofing process based at least in part on the current A-line data and the previously-obtained A-line data.

Ultrasonic fingerprint anti-spoofing based on A-line data

Various aspects of the present disclosure generally relate to control of a user device under a wet condition. In some aspects, a user device may determine whether the user device is operating under a wet condition; select, based at least in part on whether the user device is operating under the wet condition, a set of input components to control the user device, wherein the set of input components is selected from a plurality of different sets of input components; and configure a user interface of the user device according to the set of input components. Numerous other aspects are provided.

Control of a user device under wet conditions

Systems, methods and apparatus for configuring a fingerprint sensor to operate in a capacitive sensing mode and an ultrasonic sensing mode are disclosed. A fingerprint sensor may be configured to operate in a capacitive sensing mode by driving a sensing electrode using a controller. In some implementations, an object positioned on or near the sensing electrode may be detected using the fingerprint sensor in the capacitive sensing mode, and the controller can drive electrodes of the fingerprint sensor differently to configure the fingerprint sensor to operate in an ultrasonic sensing mode. In some implementations, an applications processor may be instructed to authenticate a fingerprint of the object from image data obtained when the fingerprint sensor is operating in the ultrasonic sensing mode. In some implementations, a display of a mobile device containing the fingerprint sensor may be unlocked, or the mobile device may be woken up when the fingerprint is authenticated.

Hybrid capacitive and ultrasonic sensing

The present disclosure describes aspects of a capacitance-to-voltage modulation circuit. In some aspects, the circuit is used in touch sensing. In some aspects, a modulation circuit comprises a first pair of switches having one switch connected between a voltage source and a capacitor, and another switch connected between ground and the input of the circuit. The circuit also includes a second pair of switches having one switch connected between the voltage source and the input of the circuit, and another switch connected between ground and the capacitor. A third pair of the circuit's switches comprise one switch connected between the capacitor and an input of an analog-to-digital converter (ADC) and another switch connected between the input of the circuit and the input of the ADC. The third pair of switches may enable charge sharing of signals modulated by the first and second pairs of switches, a result of which can be used to sense touch input based on capacitance at the input of the circuit.

Capacitance-to-voltage modulation circuit

Apparatuses and methods of a gradual power wake-up mechanism are disclosed. In one embodiment, a method of activating a device based on detection of a fingerprint image may include monitoring a first metric level of a first set of regions of the fingerprint image, determining a second metric level of a second set of regions of the fingerprint image in response to the first metric level exceeding a first threshold, and activating the device based on the second metric level of the second set of regions of the fingerprint image.

Gradual power wake-up mechanism

Embodiments of apparatuses and methods for detecting a spoof finger are disclosed. In one embodiment, an ultrasonic fingerprint sensor comprises an ultrasonic transmitter configured to transmit an ultrasonic wave to a finger, an ultrasonic sensor array configured to receive a reflected ultrasonic wave from the finger, and a controller configured to determine a reflected acoustic energy of the finger based on a difference between average amplitudes of the reflected ultrasonic wave from ridges and valleys of the finger; and determine whether the finger is a spoof based at least in part on the reflected acoustic energy of the finger.

Liveness and spoof detection for ultrasonic fingerprint sensors

Disclosed is an apparatus and method for detecting presence of persons or objects within an environment. The apparatus and method may determine a difference in relative position between transmitters having an unknown room position. A transmitter may emit coded signals that may be detected by other transmitters within the room and properties of the coded signal can form a baseline for comparison to new signals after the baseline is established. Through the use of coded signals and relative distance location between transmitters, movement and position of persons or objects within the room may be determined.

Method and apparatus for performing ultrasonic presence detection

A control device executing a networking framework for controlling a network of smart objects registered with a framework may interact with only those smart objects in a room. A radio frequency signal broadcast on the networking framework for reception by smart objects registered with the networking framework may cause each of the plurality of smart objects to transmit an ultrasound signal that may include an identifier, such as a generic identifier of the smart object that was assigned during registration with the network framework. The control device may receive the ultrasound signals only from the smart objects in the room. The control device may rename each smart object from which ultrasound signals were received with new identifying information that may include a reference to the room. The device may then communicate with the smart objects via the networking framework using the new identifying information.

Methods, smart objects, and systems for naming and interacting with smart objects

An apparatus that has a touchscreen, is configured to determine a response to a contact by a hand with a region of the touchscreen, and includes a first means for determining a location of a graphical projection of a digital pen onto the touchscreen, a second means for determining, via an ultrasonic wave, a first angle between a first line along an edge of the touchscreen and a second line along the graphical projection, a third means for determining a distance between the touchscreen and the digital pen, and a fourth means for determining, from the distance, the response to the contact by the hand with the region defined by the location and the first angle.

Determining response to contact by hand with region of touchscreen

Implementations of the technology described herein provide a method for detecting gesture commands using an ultrasonic pen system. The system has a pen and a user device. Detection of gesture commands is based on two-dimensional gestures relative to the screen of a user device, three-dimensional gestures relative to the screen of the user device, roll/rotation around a longitudinal axis of the pen body, and micro-twisting around the longitudinal axis of the pen body. The user device receives the gestures and translates them into commands such as UNDO and BACK.

In-air ultrasound pen gestures

Growing community of inventors

San Diego, CA, United States of America

Nathan Felix Altman