Abstract: The present system can include the ability to create and store a unique digital identity of an individual. The system can include an identity recording system and an immutable storage system. An identity capture device can be adapted to: receive a first biometric information from the identity capture device, create a digital identity record according to the first biometric information, store the digital identity record on the immutable storage system, create a digital envoy according to the digital identity record wherein the digital envoy is uniquely associated with the digital identity record, wherein the digital envoy is adapted to be provided to an authentication system wherein the authentication system is adapted to receive a second biometric information, receive the digital envoy, retrieve the digital identity record, and create an authentication approval according to a positive comparison of the digital identity record and the second biometric information.

Abstract: A method may include measuring a physical quantity associated with a load driven by an amplifier, generating a windowing function having a variable length and based on a number of samples of the physical quantity to be processed, applying the windowing function to the physical quantity, performing a transform on the physical quantity as filtered by the windowing function, and determining a characteristic of the load based on the transform.

Abstract: Circuitry comprising: a voltage monitoring path; a current monitoring path; a reference element of a predefined impedance; and processing circuitry, wherein in operation of the circuitry in a calibration mode of operation: the voltage monitoring path is operative to output a signal indicative of a voltage across the reference element in response to a reference signal applied to the reference element; the current monitoring path is operative to output a signal indicative of a current through the reference element in response to the reference signal; and the processing circuitry is operative to: receive the signal indicative of the voltage across the reference element and the signal indicative of the current through the reference element; generate an estimate of an impedance of the reference element; and determine a compensation parameter for an element of the circuitry for compensating for a difference between the estimate of the impedance and the predefined impedance of the reference element.

Abstract: Circuitry comprising: a voltage monitoring path; a current monitoring path; a reference element of a predefined impedance; and processing circuitry, wherein in operation of the circuitry in a calibration mode of operation: the voltage monitoring path is operative to output a signal indicative of a voltage across the reference element in response to a reference signal applied to the reference element; the current monitoring path is operative to output a signal indicative of a current through the reference element in response to the reference signal; and the processing circuitry is operative to: receive the signal indicative of the voltage across the reference element and the signal indicative of the current through the reference element; generate an estimate of an impedance of the reference element; and determine a compensation parameter for an element of the circuitry for compensating for a difference between the estimate of the impedance and the predefined impedance of the reference element.

Abstract: A system for detecting displacement of a movable member of an electromagnetic transducer having a magnetic coil-driven linear actuator with a static member and a movable mass mechanically coupled to the static member and having a back electromotive force present across terminals of a coil of the electromagnetic transducer is provided. The system may include a resistive-inductive-capacitive sensor comprising the coil, a driver configured to drive the resistive-inductive-capacitive sensor with a driving signal, a measurement circuit communicatively coupled to the resistive-inductive-capacitive sensor and configured to measure one or more of phase information and amplitude information associated with the resistive-inductive-capacitive sensor and based on the one or more of phase information and amplitude information, determine a displacement of movable mass, wherein the displacement of the movable mass causes a change in an impedance of the resistive-inductive-capacitive sensor.

Abstract: An integrated circuit for implementing at least a portion of a personal audio device may include an output for providing an output signal to a transducer, wherein the output signal includes a pilot signal, a microphone input for receiving a microphone signal from a microphone indicative of an output of the transducer, and a processing circuit. The processing circuit may be configured to implement a pilot signal control to apply an adjustment to the pilot signal as necessary to maintain the pilot signal at a substantially constant magnitude regardless of proximity of the transducer to a pinna and implement a proximity determination block configured to determine proximity of the transducer to the pinna based on the adjustment.

Abstract: An integrated circuit for implementing at least a portion of a personal audio device may include an output for providing an output signal to a transducer, wherein the output signal includes a pilot signal, a microphone input for receiving a microphone signal from a microphone indicative of an output of the transducer, and a processing circuit. The processing circuit may be configured to implement a pilot signal control to apply an adjustment to the pilot signal as necessary to maintain the pilot signal at a substantially constant magnitude regardless of proximity of the transducer to a pinna and implement a proximity determination block configured to determine proximity of the transducer to the pinna based on the adjustment.

Abstract: An integrated circuit for implementing at least a portion of a personal audio device may include an output for providing an output signal to a transducer, wherein the output signal includes a pilot signal, a microphone input for receiving a microphone signal from a microphone indicative of an output of the transducer, and a processing circuit. The processing circuit may be configured to implement a pilot signal control to apply an adjustment to the pilot signal as necessary to maintain the pilot signal at a substantially constant magnitude regardless of proximity of the transducer to a pinna and implement a proximity determination block configured to determine proximity of the transducer to the pinna based on the adjustment.

Abstract: Digital control of a crystal oscillator is implemented in a manner that allows frequency accuracy to be traded off dynamically with power consumption. The oscillator transitions between a less accurate/lower power mode and a high accuracy/higher power mode smoothly without requiring any external clock source during the transition. Power consumption is optimized because the crystal oscillator provides the clock source during transitions between the power modes and no other clock source is needed for these transitions. The system can also optimize the startup time and steady state power consumption independently.

Abstract: In general, a photovoltaic module may include a binary semiconductor layer formed from a vapor rich in one component of a binary semiconductor source.

Abstract: Digital control of a crystal oscillator is implemented in a manner that allows frequency accuracy to be traded off dynamically with power consumption. The oscillator transitions between a less accurate/lower power mode and a high accuracy/higher power mode smoothly without requiring any external clock source during the transition. Power consumption is optimized because the crystal oscillator provides the clock source during transitions between the power modes and no other clock source is needed for these transitions. The system can also optimize the startup time and steady state power consumption independently.

Abstract: In general, a photovoltaic module may include a binary semiconductor layer formed from a vapor rich in one component of a binary semiconductor source.

Abstract: A discontinuous or reduced thickness window layer can improve the efficiency of CdTe-based or other kinds of solar cells.