Abstract: A power supply and a method to provide power to a load via a power delivery network are presented. The power delivery network adds a pole and/or zero to a transfer function of the power supply. The power supply has a feedback unit to sense a load voltage at the load and to provide a feedback voltage which is indicative of the load voltage. The power supply has an input amplifier provides an error voltage based on the feedback voltage. The power supply has a power converter to provide power to the power delivery network depending on the error voltage. The power supply has an equalization unit to add a zero and/or a pole to the transfer function of the power supply, such that the pole and/or zero of the power delivery network is partially compensated. The equalization unit is located between an input amplifier and a power converter.

Abstract: An electronic circuit provided with a III/V semiconductor domain, and a method of operating such a circuit is presented. In particular, the present application relates to electronic circuit based on a Gallium Nitride (GaN) semiconductor. GaN components must be controlled in a way that ensures proper operation over a wide variation of GaN parameters. There is a circuit comprising a first domain coupled to a second domain, the first domain being based on a III/V semiconductor; wherein the first domain comprises a first component and a second component. The second component being representative of an electrical characteristic of the first component. The second domain contains a sensor adapted to sense an electrical quantity of the second component and an input generator coupled to the sensor. The input generator is adapted to provide at least one input, based on the electrical quantity, to the first domain.

Abstract: This document presents an oscillator circuit and method. The oscillator circuit has a crystal to generate an oscillating voltage signal, a load capacitor coupled to the crystal, a capacitive element, and a switching circuit. The switching circuit alternately connects the capacitive element to the load capacitor and disconnects the capacitive element from the load capacitor. The presented oscillator circuit shows the advantages of a lower power consumption and a smaller circuit area.

Abstract: A launch device for launching an electronic apparatus comprises a storage unit, a main storage and a processor. The storage unit is configured to store a mini-launch code for executing a detection of an output value of a sensor, and store system driving codes which comprises a standard launch code for launching electronic apparatus. The main storage loads the mini-launch code and the system driving codes. The processor loads and executes the mini-launch code or the standard launch code.

Abstract: A power converter and method to detect a light load condition at an output of the power converter are presented. The power converter may have an inductor and a resistive element connected between an input of the power converter and an input of the inductor. The power converter may have a first chopping unit to generate a chopped voltage signal at an output of said first chopping unit, wherein the chopped voltage signal is generated by chopping an inductor voltage at the input of said inductor based on a duty cycle of the power converter. The power converter may have a reference current source, wherein the reference current source and a replica resistive element are arranged in series. The power converter may have a comparator unit to generate, based on the reference potential and based on the chopped voltage signal, a signal indicative of said light load condition.

Abstract: A method of data calibration, and in particular sensor calibration, which involves gathering an initial first estimate and then binning the data samples, so that calibration can be performed without the need for a known reference stimulus. The present disclosure relates to calibration of vectors in a measurement system, and in particular to calibration of a correction function for systematic errors in successive data vectors. There is provided a method of determining a vector calibration function comprising: binning successive data vectors; and optimising the binned data vectors once data vectors allocated to a minimum number of unique bins have been observed. The method comprises establishing an initial calibration estimate and where the binning and optimising are performed based on said initial calibration estimate.

Abstract: A flyback converter is disclosed having a secondary side controller that generates an input current for an optocoupler diode by driving a variable resistor with a control voltage. The secondary side controller varies a variable resistance for the variable resistor to compensate for current transfer ratio gain variations for the optocoupler.

Abstract: A digital filter and a method for filtering a pulse density modulation (PDM) signal are presented. The digital filter has a first filter circuit to receive an input signal with input values at successive time steps to provide a filtered input signal with filtered values at successive time steps. The digital filter does not require sample-rate or data format conversions. Also, the digital filter is area and power efficient when implemented in hardware. Optionally, the digital filter has a sigma-delta modulator including the quantiser, the sigma-delta modulator being used to receive the filtered input signal and to process the filtered input signal before and/or after being quantised by the quantiser. This digital filter does not require sample-rate or data format conversions. This digital filter is area and power efficient when implemented in hardware.

Abstract: The present document relates to oscillator circuits and a method. An oscillator circuit generates an oscillating voltage signal, wherein the crystal has a first electrode and a second electrode. The oscillator circuit has a power source with a supply terminal and a reference terminal. The oscillator circuit has a switching circuit arranged between the power source and the crystal. The switching circuit, in a start-up phase, alternately connects the supply terminal of the power source to the first and second electrode of the crystal such that an amplitude of the oscillating voltage signal is increased.

Abstract: The power saving method includes storing current connection information of an electronic device corresponding to an access point; disconnecting power supply to designated hardware to form a disconnection state after storing the current connection information; determining whether the disconnection state conforms to a release condition; and connecting the power supply to the designated hardware if the disconnection state conforms to the release condition. The connecting of the power supply to the designated hardware includes loading final connection information of the electronic device corresponding to the access point prior to disconnecting the power supply, and utilizing the final connection information to guide the electronic device to connect the access point.

Abstract: A low power microcontroller that includes a low power node controller adapted to retrieve data from peripheral devices is presented. The microcontroller contains a state machine coupled to a storage medium, which is adapted to store a set of instructions executable by the state machine. The microcontroller also contains a power domain controller, which is adapted to enable the state machine upon receipt of a notification signal. As an option, the microcontroller contains a plurality of communication controllers for communicating with a plurality of external devices, wherein the power domain controller includes a register which may be read by the state machine to identify a communication controller among the plurality controllers. Also, a method of operating a microcontroller for use with an external device is presented. The method provides a state machine which executes a set of instructions.

Abstract: Systems and methods of media servers for estimating the video quality of experience (QoE) of human viewers of video content or communications at video receivers. With these systems and methods, a media server can collect, within a plurality of predetermined time windows synchronized in time, operational parameters of ingress and egress networks over which such video content or communications can be transmitted, as well as coding parameters of a video decoder and a video encoder within the media server. Having collected the operational parameters of the ingress network and egress network and the coding parameters of the video decoder and video encoder, the media server can determine QoE scores associated with some or all the ingress network, the video decoder, the video encoder, and the egress network, and estimate a resulting video QoE for a human viewer at a video receiver as a predefined combination of the respective QoE scores.

Abstract: A beacon signal processing system of reducing wake-up frequency periodically receives a beacon signal from an access point. The beacon signal processing system, according to a data transfer type of a traffic indication message contained in the beacon signal, maintains a sleep mode or only wakes up part of modules of hardware and software necessary for communication for processing.

Abstract: The present document relates to a Viterbi-based GFSK (Gaussian frequency-shift keying) demodulator that supports different modulation index ranges. In particular, the present document relates to a circuit and a corresponding method for demodulating a base band signal. For example, the base band signal may have an in-phase component and a quadrature component. The method includes determining a phase-modulated signal based on the base band signal. The method includes determining a scaled phase signal by scaling the phase-modulated signal using a scaling factor. The method includes determining discrimination signals based on the scaled phase signal using a periodic discrimination function. The method includes applying a Viterbi algorithm to the discrimination signals for determining an output signal.

Abstract: A computer system, especially but not exclusively an embedded system, is provided with a CPU and an external FLASH or other memory which is used for storing code to be executed by the CPU in operation of the system. The system can be initialized without requiring a secondary boot sequence which means it can be used in preference to embedded or serial FLASH solutions. There is provided a computer system comprising: a processor; an external memory, being external to the processor; a memory controller for the external memory; and a power management unit which is arranged to receive a wake up signal, then to first wake up the memory controller; and secondly at a later time to wake up the processor.

Abstract: A method for a device for determining the location of a mobile transmitting device using a two phase time difference of arrival method and to a system using such a device are presented. There is a first radio node for calculating a location of a third radio node, for receiving, from the third radio node, a first ranging signal and for calculating, based on the first ranging signal, a first ranging parameter. The first radio node receives, from a second radio node, a second ranging signal, transmits to the second radio node a third ranging signal, calculates a phase offset between the first and second radio nodes based on the second and third ranging signals, and calculates a distance between the first and third radio nodes based on the phase offset between the first and second radio nodes based on the first ranging parameter.

Abstract: A flyback converter is provided with a controller that is configured to analyze the reflected feedback voltage waveforms to determine the presence of a ground connection fault for the auxiliary winding.

Abstract: A wireless local area network power saving method and an access point are provided. The access point implements a sleep mode regardless of whether the access point connects to a station. Furthermore, the access point sets different access point wake-up time period depending on the situation whether the access point connects to the base station or not such that power saving effect is enhanced.

Abstract: The present disclosure discloses a power saving optimization method and device for an access point of a wireless local area network. The present embodiment discloses a power saving optimization method and device for optimizing the weak wakeup interval, a value of the weak awake time period, and a predicted value of power consumption between a station and an access point associated, in order to optimize power saving when the station performs operations in a low power mode, so as to maintain a sleep mode over a long period of time to a maximum extent without data loss in the low power mode.

Abstract: DC-DC voltage regulators for converting an input voltage into one or more output voltages and methods for operating such voltage regulators are described. The voltage regulator may have a high side switching device coupled between the input port and a first intermediate node. The voltage regulator may have an inductive element having one port coupled to the first intermediate node and may have a capacitive element having two ports, coupled between the first intermediate node and a second intermediate node, with its one port coupled to the first intermediate node. The voltage regulator may have a charging switching device coupled between the other port of the capacitive element and a predetermined voltage level, for charging the capacitive element when the high side switching device and the charging switching device are both in an ON state.