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Systems and methods for real-time signal sampling in power conversion systems

Date/App# patent app List of recent Feedback Signal-related patents
08/28/14
20140244051
 Direct drive fan system with variable process control patent thumbnailnew patent Direct drive fan system with variable process control
The present invention is directed to a direct-drive fan system and a variable process control system for efficiently managing the operation of fans in a cooling system such a as wet-cooling tower or air-cooled heat exchanger (ache), hvac systems, mechanical towers or chiller systems. The present invention is based on the integration of key features and characteristics such as tower thermal performance, fan speed and airflow, motor torque, fan pitch, fan speed, fan aerodynamic properties, and pump flow.
08/28/14
20140241467
 Phase locked loop frequency synthesizer with reduced jitter patent thumbnailnew patent Phase locked loop frequency synthesizer with reduced jitter
A phase locked loop frequency synthesizer has a controlled oscillator for generating an output signal at a desired frequency, a phase/frequency detector module for comparing a feedback signal derived from the controlled oscillator with a reference signal to generate an error signal, a loop filter for processing said at least one error signal from said phase/frequency detector module to generate a combined control signal for the controlled oscillator. The gain of the phase/frequency detector module can be adjusted, preferably by varying the pulse width and pulse cycle, to maintain the overall gain of the phase locked loop within a given range and thereby maximize signal to noise ratio..
08/28/14
20140241461
 Wide bandwidth digital predistortion system with reduced sampling rate patent thumbnailnew patent Wide bandwidth digital predistortion system with reduced sampling rate
A digital predistortion linearization method is provided for increasing the instantaneous or operational bandwidth for rf power amplifiers employed in wideband communication systems. Embodiments of the present invention provide a method of increasing dpd linearization bandwidth using a feedback filter integrated into existing digital platforms for multi-channel wideband wireless transmitters.
08/28/14
20140241014
 Systems and methods for real-time signal sampling in power conversion systems patent thumbnailnew patent Systems and methods for real-time signal sampling in power conversion systems
System and method for regulating a power conversion system. An example system controller includes a signal processing component and a driving component.
08/28/14
20140240156
 Electronic compensation of capacitive micro-machined sensors parasitic modes in force-feedback interface systems patent thumbnailnew patent Electronic compensation of capacitive micro-machined sensors parasitic modes in force-feedback interface systems
Operating capacitive sensors in force feedback mode has many benefits, such as improved bandwidth, and lower sensitivity to process and temperature variation. To overcome, the non-linearity of the voltage-to-force relation in capacitive feedback, a two-level feedback signal is often used.
08/21/14
20140237513
 Variable modulation unicast system patent thumbnailVariable modulation unicast system
A system is described that consists of a variable modulation unicast system that utilizes multiple modulation schemes in a cable network for unicast applications and is capable of assigning users to different channels of differing modulation schemes in the network based on a feedback signal received in response to a transmitted probe signal. The system may also, in response to the feedback signal from a remote device in the network, assign a channel from a plurality of channels having differing carrier frequencies and modulation schemes to the remote device and may also modify the carrier frequencies of the channels..
08/21/14
20140236522
 Range-dependent bias calibration of an accelerometer sensor system patent thumbnailRange-dependent bias calibration of an accelerometer sensor system
One embodiment of the invention includes an accelerometer sensor system. The system includes a sensor comprising a proofmass and electrodes and being configured to generate acceleration feedback signals based on control signals applied to the electrodes in response to an input acceleration.
08/21/14
20140233674
 General phase perturbation method patent thumbnailGeneral phase perturbation method
A method for modifying a signal transmitted from a mobile communication device comprising perturbing a transmit diversity parameter from its nominal value by modulating the parameter with respect to the nominal value in alternating directions, receiving a feedback signal including feedback information relating to the modified signal as received at a feedback device, and based at least on the feedback information, adjusting the nominal value of the transmit diversity parameter by increasing, decreasing, or preserving the nominal value. The perturbations are selected to minimize phase discontinuities..
08/21/14
20140233275
 Adaptive active clamp of flyback power converter with high efficiency for heavy load and light load patent thumbnailAdaptive active clamp of flyback power converter with high efficiency for heavy load and light load
A control circuit of a flyback power converter according to the present invention comprises a low-side transistor, an active-damper, a high-side drive circuit, and a controller. The low-side transistor is coupled to switch a transformer.
08/21/14
20140233274
 Power supply controller with minimum-sum multi-cycle modulation patent thumbnailPower supply controller with minimum-sum multi-cycle modulation
An example power supply controller includes a signal separator circuit that generates a feedback signal. An error signal generator generates an error signal in response to the feedback signal.
08/21/14
20140233271
Systems and methods for reducing electromagnetic interference by adjusting switching processes
System and method for regulating a power conversion system. An example system controller for regulating a power conversion system includes a signal generator and a driving component.
08/21/14
20140233267
Power converter and method of converting power
A power converter and a method of converting power are provided. The power converter includes a resonant converting circuit and a control circuit.
08/21/14
20140232468
Suppression circuit for suppressing unwanted transmitter output
Aspects of the disclosure relate to a frequency suppression circuit arrangement, which allows at least one selected frequency band to be suppressed by coupling the frequency suppression circuit between the input and output of an rf power amplifier. The frequency circuit in the embodiments of the disclosure down-converts a feedback signal derived from the amplified output signal into baseband signals.
08/21/14
20140230520
Range-dependent bias calibration of an accelerometer sensor system
One embodiment of the invention includes an accelerometer sensor system. The system includes a sensor comprising a proofmass and electrodes and being configured to generate acceleration feedback signals based on control signals applied to the electrodes in response to an input acceleration.
08/14/14
20140229785
Method and apparatus for clock and data recovery
A multi-link input/output (i/o) interface uses both feed-forward and feedback signaling to reduce the impact of noise on data capture at a memory controller. To transfer data from a source module to a destination module, a defined pattern is communicated from the memory module along a master channel concurrent with the memory module providing data via one or more slave channels.
08/14/14
20140228870
Liquid ejection device and liquid ejection surgical instrument
A liquid ejection device includes a drive waveform generator generating a drive waveform signal; a modulator performing pulse modulation on a signal from the drive waveform generator to provide a modulated signal; a digital power amplifier performing power amplification on the modulated signal to provide an amplified digital signal; a lowpass filter smoothing the amplified digital signal to provide a drive signal of an actuator; a compensator advancing the phase of the drive signal to provide a negative feedback signal; and a subtractor providing a differential signal between the drive waveform signal and the negative feedback signal as an input signal to the modulator. The liquid ejection device can be used as a liquid ejection surgical instrument..
08/14/14
20140225649
Sensor circuit
Provided is a sensor circuit which can amplify a sensor signal at high speed and with a high amplification factor without increasing the current consumption. The sensor circuit includes a primary amplifier for amplifying in advance a differential output signal which is a current signal of a sensor element, a secondary amplifier for amplifying the amplified differential output signal, a constant voltage generating circuit for maintaining a sensor element driving current to be constant, and a feedback circuit for feeding back a feedback signal to adjust an amplification factor.
08/14/14
20140225635
All-digital phase locked loop self test system
A method and apparatus for an all-digital built in self test (bist) of a phase locked loop includes a phase detector (pd), wherein the pd produces a digital signal describing a comparison between a reference signal and a feedback signal, and an all-digital programmable bist coupled to the pd and a charge pump (cp). The bist includes a digital counter to accumulate the digital signal, and a communication link, which provides the accumulated digital signal from the counter to automatic test equipment (ate), which determines whether the pll is operating correctly based on the accumulated digital signal.
08/14/14
20140225578
Voltage converter
A voltage converter is disclosed. The voltage converter includes a constant on time signal generator, a first and second transistors, an inductor, a feedback circuit and a ripple injection circuit.
08/07/14
20140222212
Dynamic simulated motor
A controller is configured to generate control signals to control a variable frequency drive coupled with a load. A simulator receives the control signals and processes the control signals.
08/07/14
20140219392
Method and device for acquiring multi-frequency band digital predistortion output signals
The present invention relates to the communications field, discloses a method and device for acquiring multi-frequency band digital predistortion (dpd) output signals, enables the result of dpd processing to compensate the intermodulation of multi-frequency band signal combinations after pa, and improves the aclr of the signals after pa. Specifically, when performing dpd processing on an input signal received on a working frequency band, reference must be made to the dpd coefficients generated from the feedback signals of the signals previously received on the working frequency band and on other working frequency bands, and to the input signals currently received on other working frequency bands.
08/07/14
20140218984
Inverter control module with harmonic suppression capability
An inverter control module electrically connected to an inverter module is disclosed to include an error detection unit for receiving a control signal and a feedback signal from an external source and processing these signals and then outputting a corresponding error signal, a signal amplifier module electrically coupled to the error detection unit for receiving the error signal and amplifying the error signal or raising the frequency of the error signal and then outputting the processed signal, and a driver module electrically coupled to the signal amplifier module for receiving the amplified or frequency-raised error signal and generating a corresponding driving signal and then outputting the driving signal to a power module of the inverter module for driving the power module to work.. .
08/07/14
20140218975
Power conversion system with adjustable frequency
A power conversion system with adjustable frequency includes an electric transformer, a pulse width modulation driving controller, a switching transistor, a first and second voltage division resistors connected in series, an output diode and an output capacitor. The electric transformer receives the input power and generates the sensing current and induced current.
08/07/14
20140218125
Digital pulse width modulation controller
A digital pulse width modulation controller includes a pulse width modulation controller, a selection unit having at least one selector, a comparison unit having at least one comparator, and a signal conversion unit having at least one digital-to-analog converter. The digital-to-analog converter generates a reference current and/or voltage.
08/07/14
20140218083
Delay-locked loop with dual loop filters for fast response and wide frequency and delay range
A delay-lock loop includes two feedback loops for controlling delay elements in the delay-lock loop. The first feedback loop includes a feedback circuit for generating a feedback signal indicating a delay adjustment based on a phase difference between an input clock signal to the delay-locked loop and an output clock signal generated by the delay-locked loop.
08/07/14
20140218002
Power system and control method thereof
The present invention provides a power system and controlling method thereof. The power system includes: pulse width modulation (pwm) power source, voltage detection unit, current detection unit and feedback signal generation unit.
08/07/14
20140217999
Soft start circuits and techniques
A regulator control circuit includes a switch control signal generator to generate a switch control signal and a soft start circuit to generate a soft start signal for use by the switch control signal generator. The soft start circuit includes a soft start controller and a decreasing circuit to decrease the soft start signal in response to the soft start controller.
07/31/14
20140213939
Treatment apparatus for external application to a mammal body
A treatment apparatus for external application to a mammal body, comprising a housing, a transducer element, adapted to provide an output towards and/or into the mammal body, a switch element, adapted to activate the transducer element in accordance with a first predetermined condition and deactivate the transducer element in accordance with a second predetermined condition, a feedback element, adapted to provide at least one first feedback signal in response at least a third predetermined condition, and a resilient coupling element, adapted to operatively couple the transducer element to said housing.. .
07/31/14
20140212163
Power source apparatus and image forming apparatus
A power source apparatus includes a transformer configured to output a voltage, a feedback unit configured to output a feedback signal based on the voltage output from the transformer, and a driving unit configured to drive the transformer according to a setting signal for setting the output voltage and the feedback signal. Whichever of a voltage of positive polarity and a voltage of negative polarity is output, the feedback unit controls the voltage output according to a value of a difference between the output voltage and a threshold value..
07/31/14
20140211731
Radio base station, user terminal, radio communication system and radio communication method
The present invention is designed to reduce the increase in the amount of the calculation process in a mobile station and the amount of csi feedback data, and also prevent the amount of overall system capacity from decreasing. This radio communication system (1) has a radio base station (200) which can form a plurality of beams that are vertically sectorized.
07/31/14
20140211519
Single-stage pfc converter with constant voltage and constant current
An exemplary embodiment of a switching controller for a power converter is provided. The switching controller for a power converter comprises: a power device, an input circuit and a compensation capacitor.
07/31/14
20140211336
Automatic gain control loop adaptation for enhanced nyquist data pattern detection
Techniques are provided for automatic gain control loop adaptation in circuitry for processing such data signals. In one example, an apparatus comprises read channel circuitry and signal processing circuitry associated with the read channel circuitry.
07/31/14
20140210630
Digital signage displays monitoring device
A digital signage displays monitoring device includes a controller, a detector, and a connector. The controller has two ends to connect with the detector and the connector respectively.
07/31/14
20140210531
Delay-locked loop with independent phase adjustment of delayed clock output pairs
A delay-lock loop includes two feedback loops for controlling delay elements in the delay-lock loop. The first feedback loop includes a feedback circuit for generating a feedback signal indicating a delay adjustment based on a phase difference between an input clock signal to the delay-locked loop and an output clock signal generated by the delay-locked loop.
07/31/14
20140210450
Methods and apparatus for estimating return loss
Systems and techniques for return loss estimation are described. A forward power sample is taken from a power amplifier of a transmitter by sampling a feedback signal used for power control of the amplifier, and a reflected power sample at an output of the power amplifier is taken by observing the power at a circulator termination of the power amplifier.
07/31/14
20140210374
Lighting system and method for pwm duty cycle control
A lighting system and method are provided for controlling a pwm duty cycle. The lighting system is provided with at least one device that is configured to emit light in response to receiving electrical power.
07/31/14
20140209094
Detection system and method for aerosol delivery
An apparatus comprises a detector, a pressure sensor and a processor. The detector is operable to detect light that is scattered by an aerosol that is associated with a pressure.
07/24/14
20140206300
Methods and systems for noise and interference cancellation
Signals propagating from an aggressor communication channel can cause detrimental interference in a victim communication channel. One or more noise cancellers can generate an interference compensation signal to suppress or cancel the interference based on one or more settings.
07/24/14
20140204915
Method and apparatus for closed loop transmit diversity transmission initial access
Uplink precoding in closed loop transmit diversity (cltd). The methods and apparatus relate to precoder operations during an initial stage using default precoder tap weights, and a second stage wherein precoder weights obtained from a precoder control indicator channel information are used, provided the signal quality of the precoder control indicator channel is sufficiently reliable.
07/24/14
20140204792
Method and apparatus for assessing the quality of a communication channel in a multi-domain network
A method for assessing the quality of a communication channel in a multi-domain network includes transmitting, from a device, a probe signal onto the communication channel the transmitting coordinated with the transmission of at least one alien probe signal by another network node. Subsequently to the transmitting, receiving a mixed feedback signal.
07/24/14
20140204625
Secondary controller for use in synchronous flyback converter
A secondary controller for use in a synchronous flyback converter includes a comparator, a drive circuit, and logic circuitry. The comparator is coupled to generate a compare signal in response to a comparison of a threshold to an input signal representative of a secondary winding voltage of the synchronous flyback converter.
07/24/14
20140204622
Reconstruction pulse shape integrity in feedback control environment
A switched mode power converter includes a closed loop feedback control mechanism for regulating an output characteristic and a resonant type circuit for inclusion of resonant energy delivery. The characteristic impedance of the resonant type circuit is modified from an optimal energy transfer configuration to one that dampens fluctuations in a feedback signal used by the closed loop feedback mechanism.
07/24/14
20140203791
Switching power-supply device and method for manufacturing switching power-supply device
A switching power-supply device includes a switching element; an output circuit; a feedback signal generation circuit; a control circuit that drives the switching element, based on the feedback signal, and controls the voltage of the power-supply output; a correction circuit that corrects a signal level of the feedback signal, wherein the control circuit comprises: an oscillation circuit that generates an on-trigger signal; a current detection circuit that generates a current detection signal; a difference detection circuit that generates a difference detection signal; a comparison circuit that generates an off-trigger signal, based on the current detection signal and the difference detection signal; and a first load detection circuit that controls an operation of the correction circuit, based on the current detection signal, and wherein the control circuit changes a setting voltage of the power-supply output, according to the signal level of the feedback signal.. .
07/24/14
20140203732
Led driver apparatus
A led driving apparatus includes: an output transistor, having a drain coupled to the led; a node, coupled to a source of the output transistor; a ground transistor, having a drain coupled to the node, and a source coupled to the ground; an operational amplifier, including: a first input end and a second input end, for respectively receiving a driving signal and a feedback signal; and an output end, for outputting an output signal to a gate of the output transistor; a compensating capacitor, including a first end and a second end; and a switching unit, for switching between a first connection mode and a second connection mode, so as to offset a bias difference to the node for compensating the bias difference of the operational amplifier.. .
07/24/14
20140203724
Led driver circuit
A led driving circuit is provided. The led driving circuit includes: an output transistor, having a drain coupled to an led; a node, coupled to a source of the output transistor; a ground transistor, having a drain coupled to the node, and a source coupled to the ground; an operational amplifier, including: an input stage, for receiving a driving signal and a feedback signal, including a first input end and a second input end; and an output stage, for providing an output signal to a gate of the output transistor; and a first switch assembly, coupled to the driving signal, the feedback signal and the input stage of the operational amplifier, for providing the driving signal to one of the first input end and the second input end of the operational amplifier and coupling the node to the other of the first input end and the second input end of the operational amplifier..
07/24/14
20140202553
Digital closed loop proportional hydraulic pressure controller
A digitally controlled current to pressure converter (cpc) and method of controlling same is provided. The method of controlling includes the step of periodically imparting symmetrically-opposed movement of a control valve of the cpc to loosen and flush accumulated silt therefrom.
07/17/14
20140199068
Optical polarization demultiplexing for a coherent-detection scheme
An optical receiver having a plurality of optical iq modulators arranged in a butterfly configuration and configured to operate as an optical polarization de-multiplexer. The optical receiver further has (i) an opto-electric circuit configured to apply optical homodyne detection to an optical input signal received by the optical receiver and (ii) a controller configured to generate one or more control signals for driving the iq modulators of the plurality based on one or more electrical feedback signals received from the opto-electric circuit..
07/17/14
20140198710
Feedback signalling for multicast data transmission
Data transmission in a multicast fashion in which retransmissions are requested by recipients sending feedback to the one sender. Receiving stations are informed about the feedback of another receiving station.
07/17/14
20140197809
Switching regulator including charge pump
The present invention discloses a switching regulator. The switching regulator converts an input voltage to an output voltage.
07/17/14
20140197774
Method and apparatus for controlling power converter with inverter output filter
Power converters and methods are presented for driving an ac load connected through an intervening filter circuit, in which at least one filter current or voltage signal or value is determined according to feedback signals or values representing an output parameter at an ac output of the power converter, and ac electrical output power is generated at the ac output based at least partially on the at least one filter current or voltage signal or value.. .
07/17/14
20140196919
System and method of tractor control based on agricultural implement performance
A method and system for controlling operation of a tractor and/or agricultural implement towed by the tractor is disclosed. A vibration sensor is mounted to the agricultural implement to detect the magnitude of vibration, or bounce, on the agricultural implement.
07/10/14
20140195065
Control circuit for programmable power supply
A control circuit for a programmable power supply is provided. It comprises a reference generation circuit generating a voltage-reference signal and a current-reference signal for regulating an output voltage and an output current of the power supply.
07/10/14
20140195023
Method and system for feedback on running style field and background of the invention
The invention relates to a system and method for providing feedback to a user on his or her running style or running technique. The system employs a pressure sensitive surface to record a gait line of the center of pressure exerted by the user's foot on an underlying surface during a footstep period.
07/10/14
20140194054
Mobile telecommunication repeater for canceling feedback signals
A mobile telecommunication wireless repeater includes: a combination stage for combining a received signal with a feedback cancellation signal; a comparison stage for comparing an input signal of the combination stage with an output signal of the combination stage and determining a weighted value and a time offset value for a feedback signal to be cancelled, based on the comparison; and a recombination stage comprising one or more adaptive filters and configured to receive the weighted value and the time offset value and generate the feedback cancellation signal according to the weighted value and the time offset value.. .
07/10/14
20140192761
Radio communication system, radio base station apparatus, user terminal and radio communication method
The present invention is designed to reduce the space to install antennas and still increase the system capacity despite the state of the distribution of user terminals in cells. According to the radio communication method of the present invention, a radio base station apparatus selects precoding vectors from a codebook that is set in advance to be uneven with respect to the direction of the arrangement of antenna elements, based on communication quality information of the user terminals in the cell, multiplies signals to supply to each antenna element by the selected precoding vectors, and transmits the signals multiplied by the precoding vectors to the user terminals, and the user terminal receives a signal from the radio base station apparatus, extracts a reference signal from the received signal and measures channel quality; and feeds back a communication quality feedback signal, including the measured channel quality, to the radio base station apparatus, via the uplink..
07/10/14
20140192727
Methods and arrangements in a wireless communication system
Method and arrangement in a user equipment for adjusting signals transmitted in uplink to a network node based on a feedback value received from the network node. The method includes transmitting a signal, to be received by the network node.
07/10/14
20140192566
Primary-side controlled programmable power converter
A circuit for controlling a programmable power converter is provided. The circuit comprises a control circuit, a switching controller, and a first opto-coupler.
07/10/14
20140192565
Circuit with synchronous rectifier for controlling programmable power converter
A control circuit of a power converter and a method for controlling the power converter are provided. The control circuit of the power converter comprises a switching circuit and a temperature-sensing device.
07/10/14
20140192563
Dual-mode switching power control device
A dual-mode switching power control device includes an electric transformer, a pwm driving controller, a switching transistor, an isolation element, an output diode and an output capacitor. The pwm driving controller is connected to the switching transistor coupled to the electric transformer.
07/10/14
20140191798
Transmission signal power control apparatus, communication apparatus and predistortion coefficient updating method
A transmission signal power control apparatus includes a power amplifier model unit which generates a learning digital signal by multiplying part of a predistortion signal by model coefficients which tentatively represent the input-output characteristics of a power amplifier, and an adaptive low-pass filter which generates a pseudo feedback signal by attenuating the high frequency components of the learning digital signal by multiplying the learning digital signal by weighting coefficients. Then, the power amplifier model unit updates the model coefficients such that the error between the feedback signal whose the high frequency components are attenuated by the low-pass filter and which is digitized, and the pseudo feedback signal is minimized, and the adaptive low-pass filter updates the weighting coefficients such that the error is minimized..
07/10/14
20140191787
Phase locked loop circuit
A phase locked loop circuit is provided which includes a bang-bang phase frequency detector configured to receive a reference signal and a feedback signal, detect a phase difference between the reference signal and the feedback signal, output a detection signal on the based on a result of the detection; an analog-digital mixed filter configured to receive the detection signal and output a control signal on the basis of the received detection signal; a voltage controlled oscillator configured to output an output signal in response to the control signal; and a divider configured to divide the output signal by n to output as the feedback signal. The detection signal is a digital signal, and the control signal is an analog signal..
07/10/14
20140191737
Power-supply apparatus
A power-supply apparatus according to an aspect includes an inductor, a transistor that supplies, in an on-state, a current to the input side of the inductor, a second transistor that becomes, when the first transistor is in an off-state, an on-state and thereby brings the input side of the inductor to a predetermined potential, a signal generation unit that generates voltage signals corresponding to a current flowing to the inductor, an amplifier that outputs a current according to the voltage signals, a converter that converts the current output from the amplifier into a voltage signal, and a control unit that controls the transistors based on a first feedback signal corresponding to the voltage on the output side of the inductor and the voltage signal, which is used as a second feedback signal.. .
07/10/14
20140191702
Motor controlling device, motor controlling method and machinery system
A motor controlling device is provided. The device includes a position controller for generating a speed reference based on a positional reference and a motor position, a speed controller for generating a torque reference based on the speed reference and a motor speed, a motor drive for driving a motor based on the torque reference, the motor driving machinery to which an acceleration sensor is attached, an acceleration feedback signal generator for generating a feedback signal to the speed reference based on an acceleration detection signal that is a detection signal of the acceleration sensor, and a positional reference filter inputted with the positional reference and suppressible of low frequency vibration of the machinery..
07/03/14
20140189464
Feedback signaling error detection and checking in mimo wireless communication systems
A method of feedback in a wireless transmit receive unit includes providing a precoding matrix index (pmi), error checking the (pmi) to produce an error check (ec) bit, coding the pmi and the ec bit and transmitting the coded pmi and ec bit.. .
07/03/14
20140185725
Drift tracking feedback for communication channels
A communication channel includes a first component having a transmitter coupled to a normal signal source, and a second component having a receiver coupled to a normal signal destination. A communication link couples the first and second components.
07/03/14
20140185336
Switching power supply apparatus and method of controlling switching power supply apparatus
A switching power supply apparatus includes a transformer having a primary winding, a secondary winding, and an auxiliary winding, a switching element coupled in series to the primary winding; an output circuit section generating a voltage output from power transferred from the primary winding to the secondary winding in response to a switching operation of the switching element, a feedback signal generation circuit section configured to, during a secondary side conduction period in which an electric current flows through the secondary winding, generate a feedback signal having a signal level corrected based on a length of the secondary side conduction period, from an auxiliary winding voltage induced in the auxiliary winding, and a control circuit section driving the switching element based on the feedback signal.. .
07/03/14
20140184331
Amplifier circuits and methods of amplifying an input signal
A method of operating an amplifier circuit having a pre-charge phase and a sample/conversion phase includes, during a pre-charge phase, charging first and second capacitors to first and second bias voltages. The first capacitor is coupled to a first input of an amplifier circuit, which has a second input and an output.
06/26/14
20140179248
High efficiency linearization power amplifier for wireless communication
A predistortion system for linearizing the output of a power amplifier includes a first signal representative of an rf modulated signal and a feedback signal representative of nonlinear characteristics of a power amplifier. The system also includes a predistortion controller, comprising at least one lookup table, adapted to receive the first signal and the feedback signal and to generate a correction factor for correcting the nonlinear characteristics of the power amplifier and combining logic which combines the rf modulated signal with a signal corresponding to the correction factor and supplies it to the power amplifier to linearize the output of the power amplifier..
06/26/14
20140177770
Systems and methods for controlling frequency synthesis
Disclosed are systems and method for controlling frequency synthesizers. A control system can be implemented in a phase-locked loop (pll), such as a frac-n pll of a frequency synthesizer, to reduce or eliminate reference spurs.
06/26/14
20140177659
Semiconductor laser device
A laser device (100) includes a laser (110; 210; 310; 410; 510) in turn including at least one distributed bragg reflector (dbr) section (111), at least one phase section (112) and at least one gain section (113), further including a laser control element (150), a feedback control element (140) and a frequency noise discriminator (130,131), which feedback control element is arranged to feed a variable feedback signal to at least one of the at least one dbr section and the at least one phase section of the laser, so that the output laser frequency is altered in response to a variation in the feedback signal or the combination of respective feedback signals, whereby the feedback signal or combination of respective feedback signals is varied as a function of the detected frequency fluctuation so as to counteract the detected frequency fluctuation.. .
06/26/14
20140177539
User-equipment-managed direct device to device communications
Systems, methods, and apparatuses of a wireless communications network involve receiving configuration information for the first ue (ue1 configuration information) for an inter-device session (ids) between the first ue and a second ue, the ue1 configuration information including a radio network identifier. A control message configured with the radio network identifier and a radio resource identifier may be received.
06/26/14
20140177537
User-equipment-managed direct device to device communications
Methods, systems, and apparatuses a wireless communications network involve transmitting configuration information for a first user equipment (ue1 configuration information) for an inter-device session (ids) between the first user equipment (ue) and a second ue, the ue1 configuration information including a radio network identifier. A control message configured with the radio network identifier and a radio resource identifier can be transmitted.
06/26/14
20140177491
Base station, terminal, system and method for data transmitting in time-division duplex system
A base station, a terminal, a system and methods for performing data transmission in a time division duplex (tdd) system are disclosed. One of the methods includes: the base station sending an uplink scheduling grant signaling to the terminal on a carrier m, and after receiving uplink data sent by the terminal through a physical uplink shared channel (pusch) on a carrier n, the base station sending an ack/nack feedback signaling corresponding to the pusch to the terminal on the carrier m; wherein, m≠n; a timing relationship between a subframe by which the base station sends the uplink scheduling grant signaling and/or the ack/nack feedback signaling and a subframe where the pusch is located is identical with a hybrid automatic repeat request (harq) timing relationship corresponding to an uplink/downlink configuration of the carrier m or the carrier n..
06/26/14
20140177354
Zero keeper circuit with full design-for-test coverage
A zero keeper circuit includes a dynamic input pfet connected to a source, an output, and a dynamic input. The circuit also includes a clock input nfet connected to the output, a pull-down node, and a clock input.
06/26/14
20140177285
Electronic circuit control element with tap element
An example control element for use in a power supply includes a first terminal, a power mosfet, and a control circuit. The power mosfet has a drain terminal, a source terminal, a control terminal, and a tap terminal.


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Feedback Signal topics: Feedback Signal, Reference Voltage, Liquid Crystal, Control Unit, Communication System, Amplification, Differential Signal, Liquid Crystal Display, Frequency Detector, Frequency Divider, Loop Filter, Generates A Frequency, Scheduling, Communications, Decision Feedback Equalizer

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