Abstract: A wireless power device is presented that avoids transmit conflicts. The device can include a rectifier circuit coupled to a coil; a transmit driver coupled to the rectifier circuit; a transmit detect circuit configured to detect receipt of transmitted wireless power at the coil; and a controller coupled to the transmit driver and the transmit detect circuit, the controller receiving a signal from the transmit detect circuit and providing an alert of the presence of the transmitted wireless power, the controller activating the transmit driver to transmit wireless power in absence of the signal. The wireless device can determine an operating mode and in a transmit mode determine presence of a received power. If received power is detected an alert can be provided and an off state initiated. If transmit power is not detected the transmit driver can be activated.

Abstract: A wireless power receiver according to some embodiments includes an integrated circuit which includes: a full-bridge rectifier coupled to receive wireless power from a receiver coil; a wireless receiver controller coupled to control the full-bridge rectifier; a pass device coupled between the full-bridge rectifier and an output; and a configurable controller coupled to the switch, the configurable controller configurable as a LDO controller or a Buck controller. A second controller can be coupled to the configurable controller that interfaces to an external Buck low-side transistor if the configurable controller is the Buck controller and provides GPIO if the configurable controller is the LDO controller. A third controller can be coupled to the full-bridge rectifier, which operates as a full-bridge sync rectifier driver multiplexer to select an external driver for one or more of the rectifier transistors. Other features are also provided.

Abstract: A light detection and ranging system is presented that includes at least one light source for emitting a light pulse to the surroundings of the light detection and ranging system, at least one monitoring optical sensor for monitoring the emitting of the light pulse by the at least one light source, at least one receiving optical sensor for receiving a light signal from the surroundings of the light detection and ranging system, and at least one signal processing unit for processing the signal of the at least one receiving optical sensor which is characterized in that the at least one signal processing unit comprises a multiplexer at the input for multiplexing between the signal of the at least one receiving optical sensor and the signal of the at least one monitoring optical sensor.

Abstract: A pulsed radar system is presented that includes a sliding window and DC offset. A method of pulsed DC radar operation, comprising an operation state, the operation state including initializing parameters for a current integration window; providing timing for the current integration window to an integrating filter based from a transmit pulse; providing a DC offset associated with the current integration window; and incrementing the current integration window to the next integration window to be timed from a next transmit pulse.

Abstract: A control that can be a throttle control of a handle-bared vehicle is presented. According to some embodiments, a control can include a plurality of circuit boards, each of the circuit boards including a transmission coil, sensor coils, and control circuitry the drives the transmission coil and receives signals from the sensor coils; and one or more targets mounted on a shaft and configured to rotate over the sensor coils of the plurality of circuit boards as the shaft is rotated, wherein the plurality of circuit boards are mounted around the shaft, and wherein the position of the target is determined by the control circuitry as the shaft is rotated.

Abstract: A position sensor according to some embodiments includes a first position sensor board having first sensor coils and a first transmit coil; a second position sensor board having second sensor coils stacked with, and separated from by a distance Z, the first position sensor; and at least one target positioned relative to the stacked first position sensor and second position sensor. A redundant position sensor according to some embodiments includes a plurality of stacked sensor boards, each of the plurality of sensor boards including sensor coils, wherein one of the plurality of stacked sensor boards includes an active transmit coil; and a target positioned over the plurality of stacked sensor boards.

Abstract: In some embodiments, a position sensor calibration and linearization system for position sensors is provided. A method of calibrating and linearization of a position sensor includes reading Spatial Angle data from a position sensor at a set of positions of a target swept over receive coils in the position sensor; calculating calibration parameters from the Spatial Angle data; determining an initial position values from the Spatial Angle data and the calibration parameters; determining linearization parameters from the initial position values; and writing the calibration parameters and the linearization parameters into the position sensor.

Abstract: Embodiments of the invention relates to a Solid-state optical receiver driver system, particularly for automotive applications, comprising at least one optical receiver channel, the optical receiver channel being connectable to a respective optical receiver, which is characterized in that the solid-state optical receiver driver system further comprises at least one test signal generation unit, for providing a test signal to the at least one optical receiver channel. The invention further relates to a method for testing a solid-state optical receiver driver system.

Abstract: A light detection and ranging system is disclosed. The system includes a first light source for sending a light signal and a photo detector for receiving a light signal from the surroundings of the system. A signal processing unit receives and processes the light signal to detect objects in the surroundings of the system. A control unit controls, particularly synchronizing, the first light source, the photo detector and/or the signal processing unit. The system further includes a test unit for testing the photo detector and the signal processing unit. The test unit a second light source for sending a test light signal within the system to the photo detector.

Abstract: Embodiments described herein provide foreign object detection based on coil current sensing. The transmitter power loss is computed directly based on the coil current, in conjunction with, or in place of the conventional computation based on transmitter input current. The enhanced precision of the computer power loss can be used to more accurately detect a foreign object near the transmitter coil during a wireless power transfer.

Abstract: A wireless power receiver according to some embodiments includes an integrated circuit which includes: a full-bridge rectifier coupled to receive wireless power from a receiver coil; a wireless receiver controller coupled to control the full-bridge rectifier; a pass device coupled between the full-bridge rectifier and an output; and a configurable controller coupled to the switch, the configurable controller configurable as a LDO controller or a Buck controller. A second controller can be coupled to the configurable controller that interfaces to an external Buck low-side transistor if the configurable controller is the Buck controller and provides GPIO if the configurable controller is the LDO controller. A third controller can be coupled to the full-bridge rectifier, which operates as a full-bridge sync rectifier driver multiplexer to select an external driver for one or more of the rectifier transistors. Other features are also provided.

Abstract: Embodiments described herein provide foreign object detection based on coil current sensing. The transmitter power loss is computed directly based on the coil current, in conjunction with, or in place of the conventional computation based on transmitter input current. The enhanced precision of the computer power loss can be used to more accurately detect a foreign object near the transmitter coil during a wireless power transfer.

Abstract: In some embodiments, a method of correcting for errors in a rotational position sensor having a sine signal and a cosine signal is presented. The method includes compiling data from the sine signal and the cosine signal over a period of rotation of a motor shaft; determining offset correction parameters from the data; correcting the data with the offset correction parameters; determining amplitude difference parameters from the data; correcting the data with the amplitude difference parameters; determining phase difference parameters from the data; correcting the data with the phase difference parameters; and using the offset correction parameters, the amplitude difference parameters, and the phase difference parameters to correct the sine signal and the cosine signal.

Abstract: Embodiments described herein provide a method for wireless power transmission of reconfigurable power levels. A wireless power receiver is used to receive power from a wireless power transmitter according to a negotiated power level. The wireless power receiver determines whether a re-negotiation condition is met at the wireless power receiver. The wireless power receiver then sends, to the wireless power transmitter, a re-negotiation request for an updated power level different from the negotiated power level. The wireless power receiver receives, from the wireless power transmitter, an acknowledgement that acknowledges the updated power level, and then operates to receive power from the wireless power transmitter according to the updated power level.

Abstract: A method of distributing clock signals includes receiving a plurality of clock signals into a corresponding plurality of processing blocks; determining frequency offset data between a first clock signal of the plurality of clock signals and each of the other clock signals of the plurality of clock signals; periodically determining phase offset data between the first clock signal and the other clock signals; and transmitting the first clock signal, the frequency offset data, and the phase offset data on a pulse-width modulated clock signal. The method includes receiving a modulated clock signal, the modulated clock signal include a carrier clock signal, a frequency offset data, and a phase offset data on a pulse-width modulated clock signal; and recovering a plurality of clock signals based on the first clock signal, the frequency offset data, and the phase offset data.

Abstract: In accordance with some embodiments of the present invention, a method of controlling and correcting negative modulation is presented. In some embodiments, a method of operating a receiver includes detecting a negative modulation and adjusting one or more parameters to force a transition to a positive modulation. The parameters can be the output voltage Vout, the transmitter input voltage Vin, or receiver structural elements.

Abstract: In some embodiments, a spectrometer is presented. In accordance with some embodiments, the spectrometer includes an optical sensor array, the optical sensor array including a substrate and an array of pixels formed on the substrate; a spectral filter array formed over the pixels of the optical sensor array, the spectral filter array filtering incident light such that each pixel receives light of a spectral transmission profile associated with the pixel; a transparent spacer formed over the spectral filter array; and an opaque mask having input apertures allowing light through the transparent spacer and onto a portion of the spectral filter array. The spectrometer can be formed from the optical sensor array using a combination of photolithographic techniques and bonding of certain layers.

Abstract: In accordance with embodiments of the present invention, a wireless power transmitter includes a transmit coil that includes a plurality of concentric coils; a switch circuit coupled to the plurality of concentric coils; a driver coupled to provide a voltage to the switch circuit; and a controller coupled to the switch circuit, the controller providing control signals to the switch circuit selecting to provide the voltage across one or more of the plurality of concentric coils depending on a Q-factor measuring in the presence of a receive coil. A method of operating a wireless power transmitter includes determining a measured Q-factor for each of a plurality of configurations of concentric transmit coils; determining a difference between each of the measured Q-factors and a standard Q-factor; and selecting one of the plurality of configurations based on the differences.

Abstract: In accordance with aspects of the present invention, a method and apparatus for demodulating an amplitude-modulated wireless power signal is presented. A method of receiving an amplitude modulated component of a wireless power transmission signal according to some embodiments includes receiving an input signal, wherein the input signal is based on an amplitude modulated wireless power signal; and applying an offset to the input signal to receive the amplitude modulated component. A demodulator according to some embodiments can include a first voltage-to-current converter that receives an input signal related to an amplitude modulated wireless power signal; a second voltage-to-current converter that receives an offset signal; and a summing node that adjusts a first current produced by the first voltage-to-current converter by a second current produced by the second voltage-to-current converter to produce an output signal.

Abstract: According to some embodiments, a magnetic secured transmission (MST) driver is provided. The MST driver includes a full-bridge switching circuit that includes a first half-bridge coupled to a first node and a second half-bridge coupled to a second node; and a control circuit coupled to drive the first half-bridge according to MST input data and to drive the second half bridge according to a high-frequency pulse width modulation (PWM) signal.