Abstract: Some disclosed devices include a light source system, a target detection system; and a control system configured to communicate with the light source system and the target detection system. The control system may be further configured to receive target detection data from the target detection system, to estimate the presence or absence of a biological target based, at least in part, on the target detection data and to enable or disable the light source system based, at least in part, on an estimation of the presence or absence of the biological target. For example, if the biological target is detected, the control system may enable the light source system.

Abstract: Certain aspects of the present disclosure provide techniques for selectively activating a fingerprint sensor in an electronic device. A method that may be performed by the electronic device includes detecting a finger hover above the display module, activating the fingerprint sensor based, at least in part, on the detected finger hover, and providing, in response to detecting the finger hover, feedback information to assist in scanning the finger using the fingerprint sensor.

Abstract: Certain aspects of the present disclosure provide techniques for beamforming pressure waves. A method for operating an apparatus configured to beamform ultrasonic pressure waves may generally comprise emitting, via a pressure wave module of the apparatus, beamformed ultrasonic pressure waves through a display module of the apparatus, wherein: the display module comprises a first plurality of layers; the pressure wave module comprises a second plurality of layers; the second plurality of layers comprises at least a copolymer layer, a conductive layer, a dielectric protection layer, and a thin film transistor (TFT) glass layer; and an order of the second plurality of layers in the pressure wave module depends on an acoustic resonance value associated with the display module.

Abstract: Certain aspects of the present disclosure provide techniques for selectively activating a fingerprint sensor in an electronic device. A method that may be performed by the electronic device includes detecting a finger hover above the display module, activating the fingerprint sensor based, at least in part, on the detected finger hover, and providing, in response to detecting the finger hover, feedback information to assist in scanning the finger using the fingerprint sensor.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: Some aspects of the present application include a wearable, see-through display device. The device includes a source of video information and a micro-display configured to receive video information from the source of video information and to project light forming an image based on the video information. The device also includes a lens system comprising one or more lenses, the lens system configured to receive and collimate light from the micro-display and to propagate the light from the micro-display to an image guide and the image guide positioned to receive light from the lens system and direct the received light to a partial reflector. The device also includes a partial reflector configured to reflect the light received from the image guide out of the display device towards a place where an eye of a user wearing the see-through display device may be positioned.

Abstract: Sensor data from a sensor system of a mobile device may be used for determining a level of pressure exerted by a user on the mobile device. The sensor system may include one or more types of sensors, such as a microphone and one or more inertial sensors. The inertial sensors may include one or more gyroscopes and/or accelerometers. Based on the inertial sensor data, it may be determined whether and/or how the mobile device is being held. A process for determining a level of pressure exerted by a user on the mobile device may be adapted based, at least in part, on whether and/or how the mobile device is being held. The pressure-determining process may be adapted according to various other criteria, such as a position of a touch target in a display, ambient noise levels, etc.

Abstract: Techniques for testing ultrasonic fingerprint sensors include operating a fingerprint impress simulator that may cyclically press a contact pad of the simulator against a platen of an ultrasonic sensor under test. A control electronics arrangement may operate the ultrasonic sensor under test and the fingerprint impress simulator, and may receive ultrasonic image data from the ultrasonic sensor under test. The ultrasonic sensor may include an ultrasonic transmitter and an ultrasonic sensor array disposed between the ultrasonic transmitter and the platen. The control electronics arrangement may cause the ultrasonic transmitter to emit an ultrasonic pulse, and may receive ultrasonic image data from the ultrasonic sensor array, the ultrasonic image data being converted from a detected portion of the ultrasonic pulse.

Abstract: Sensor data from a sensor system of a mobile device may be used for determining a level of pressure exerted by a user on the mobile device. The sensor system may include one or more types of sensors, such as a microphone and one or more inertial sensors. The inertial sensors may include one or more gyroscopes and/or accelerometers. Based on the inertial sensor data, it may be determined whether and/or how the mobile device is being held. A process for determining a level of pressure exerted by a user on the mobile device may be adapted based, at least in part, on whether and/or how the mobile device is being held. The pressure-determining process may be adapted according to various other criteria, such as a position of a touch target in a display, ambient noise levels, etc.

Abstract: Techniques for testing ultrasonic fingerprint sensors include operating a fingerprint impress simulator that may cyclically press a contact pad of the simulator against a platen of an ultrasonic sensor under test. A control electronics arrangement may operate the ultrasonic sensor under test and the fingerprint impress simulator, and may receive ultrasonic image data from the ultrasonic sensor under test. The ultrasonic sensor may include an ultrasonic transmitter and an ultrasonic sensor array disposed between the ultrasonic transmitter and the platen. The control electronics arrangement may cause the ultrasonic transmitter to emit an ultrasonic pulse, and may receive ultrasonic image data from the ultrasonic sensor array, the ultrasonic image data being converted from a detected portion of the ultrasonic pulse.

Abstract: Some aspects of the present application include a wearable, see-through display device. The device includes a source of video information and a micro-display configured to receive video information from the source of video information and to project light forming an image based on the video information. The device also includes a lens system comprising one or more lenses, the lens system configured to receive and collimate light from the micro-display and to propagate the light from the micro-display to an image guide and the image guide positioned to receive light from the lens system and direct the received light to a partial reflector. The device also includes a partial reflector configured to reflect the light received from the image guide out of the display device towards a place where an eye of a user wearing the see-through display device may be positioned.

Abstract: Systems and methods for automatically controlling an electronic device based on whether or not a headset is in a listening position are described. The existing wired stereo headset conductors may be used to provide power to a sensor and hardware subsystem within the headset. In some aspects, a sensor-enabled headset or headphones can sense whether each earbud of the headset is placed in the user's ears and communicate that information to an electronic device.

Abstract: Systems and methods for automatically controlling an electronic device based on whether or not a headset is in a listening position are described. The existing wired stereo headset conductors may be used to provide power to a sensor and hardware subsystem within the headset. In some aspects, a sensor-enabled headset or headphones can sense whether each earbud of the headset is placed in the user's ears and communicate that information to an electronic device.