|| List of recent Feedback Signal-related patents
|Inter-module communication apparatus|
When modules having a signal line terminated with a terminating member and a feedback signal line are layered on top of each other so that the signal lines are coupled to each other and the return signal lines are coupled to each other using capacitive coupling and inductive coupling, the impedance of the terminating members is a coupling impedance that reflects the proximity effects in the coupling state between the modules.. .
|Asynchronous sample rate converter for digital radio tuners|
Asrc may adjust the second sample rate in accordance with the feedback signal. The rf unit, the adc, and the asrc may be implemented on a single integrated circuit (ic)..
|Methods of reverse link power control|
Methods of reverse link power control are provided. A first example method includes first adjusting ofdma transmission power based on first feedback signals during an ofdma transmission and second adjusting ofdma transmission power based on second feedback signals during periods between ofdma transmissions.
|Led backlight system and display device|
The present invention provides an led backlight system and display device. Backlight system includes power source module, led array, master switch module, current detection module, current equalizer module and current shunt module.
|Integrated on-time extension for non-dissipative bleeding in a power supply|
An example controller for a switched mode power supply includes a zero crossing detector, drive logic, and a logic gate. The zero-crossing detector generates a zero-crossing signal indicating a zero-crossing condition in the power supply.
|System and method for drum level control|
A level control system is provided. The system includes multiple sensors configured to measure multiple parameters related to a drum, wherein the multiple parameters include a drum liquid level, a vapor flow rate leaving the drum, a downstream pressure of the drum, and a feed-liquid flow rate entering the drum.
|Reverse auction system, method and computer program product|
A reverse auction system of the present disclosure is provided and includes an account module, a server center, a searching module, a publishing module, and a bidding module. The account module registers or charges a desired article request from a buyer side.
|Systems and methods for adaptive selection of video encoding resources|
Various embodiments for facilitating the adaptive selection of encoding tools in a video processing device. One embodiment, among others, is a method implemented in a video processing device for adaptively selecting video encoding tools.
|Control loop arrangement, circuit arrangement and method of regulating a load-coupled current source and the supply voltage therefor|
A circuit arrangement comprises a load current controller (10a) and a monitoring device (11a, 11b). The load current controller (10a) has its input side connected to a first reference signal connection (a6) and a load reference connection (a2), the latter being able to be coupled to an output of the current source (sqn) and being designed to provide a control signal (ib) at an output which is coupled to a control connection (a1) for controlling the current source (sqn).
|High efficiency led drivers with high power factor|
The present invention relates to a high efficiency, high power factor led driver for driving an led device. In one embodiment, an led driver can include: an led current detection circuit coupled to the led device, and configured to generate a feedback signal that represents an error between a driving current and an expected driving current of the led device; a power stage circuit, where a first power switch terminal is coupled to a first input voltage, and a second power switch terminal is coupled to ground; and a control circuit configured to generate a control signal according to the feedback signal and a drain-source voltage of the power switch, where the control signal, in each switch period, turns on the power switch when the drain-source voltage reaches a low level, and turns off the power switch after a fixed time interval based on the feedback signal..
|Method and system for providing feedback based on monitoring of channels at a customer premise|
An approach for providing feedback based on monitoring of channels at a customer premise is described. A digital signal representing a plurality of channels transported over a media broadcast network is received at a set-top box apparatus.
|Circuits and methods for eliminating reference spurs in fractional-n frequency synthesis|
Disclosed are circuits and method for reducing or eliminating reference spurs in frequency synthesizers. In some implementations, a phase-locked loop (pll) such as a frac-n pll of a frequency synthesizer can include a phase frequency detector (pfd) configured to receive a reference signal and a feedback signal.
|Decision feedback equalizer|
A decision feedback equalizer that can operate at higher speed is provided. The decision feedback equalizer includes a weighting addition circuit (adder 21, coefficient units tap1a, tap2 to tapn) that sums an input signal to weighted versions of feedback signals fb1 to fbn, n being an integer not less than 2.
|Apparatus and method to enable precision and fast laser frequency tuning|
An apparatus and method is provided to enable precision and fast laser frequency tuning. For instance, a fast tunable slave laser may be dynamically offset-locked to a reference laser line using an optical phase-locked loop.
|Battery simulation circuit|
A battery simulation circuit simulates a rechargeable battery. The battery simulation circuit includes an integrated amplifier, a voltage adjustment unit, a current limitation unit, and a feedback unit.
|Method for transmitting a signal from a transmitter to a receiver in a power line communication network, transmitter, receiver, power line communication modem and power line communication system|
A method for transmitting a signal from a transmitter over a channel to a receiver on a power line network, wherein said signal is ofdm-modulated on a set of sub-carriers, is proposed, wherein an ofdm tonemap and an eigenbeamforming encoding matrix are determined based on a channel estimation for each sub-carrier, a tonemap feedback signal and an eigenbeamforming feedback signal are generated, which are descriptive of said ofdm tonemap and said eigenbeamforming encoding matrix, respectively, and transmitted to the transmitter. A corresponding receiver, a transmitter, a power line communication and a power line communication system are described as well..
|Switching mode power supply and the method thereof|
A switching mode power supply, having: an input port; an output port; an energy storage component and a pair of power switches coupled between input port and the output port; an error amplifier configured to generate an amplified error signal based on the feedback signal and the reference signal; an error comparator configured to generate a frequency control signal based on the amplified error signal and the first sawtooth signal; a peak current generator configured to generate a peak current signal based on the frequency control signal; a peak current comparator configured to generate a current limit signal based on the peak current signal and the current sense signal; and a logic circuit configured to generate a switching signal to control the power switches based on the frequency control signal and the current limit signal.. .
|Isolated switching mode power supply and the method thereof|
An isolated switching mode power supply, having: an input terminal; an output terminal; a transformer having a primary winding and a secondary winding; a primary power switch coupled to the primary winding; a secondary power switch coupled between the secondary winding and the output terminal of the power supply; a secondary controller configured to generate a frequency modulation signal based on the output voltage and the first feedback signal; a coupled device configured to provide a frequency control signal based on the output voltage and the frequency modulation signal; and a primary controller configured to provide a switching signal to control the primary power switch based on the current sense signal and the frequency control signal.. .
|Llc controller with programmable fractional burst frequency|
A method of controlling an llc resonant converter includes programming a burst stop frequency and a burst start frequency in response to a maximum switching frequency of the llc resonant converter. The burst stop frequency and the burst start frequency are fractions of the maximum switching frequency.
|Power controllers and control methods|
Disclosed include power controllers and related control methods. A disclosed power controller has a pulse generator, a sample/hold device, a comparator, and a switch controller.
|Input jitter filter for a phase-locked loop (pll)|
An input jitter filter for a phase-locked loop and methods of use are provided. The method includes generating a masking zone around falling edges of a feedback signal.
|Higher-order phase noise modulator to reduce spurs and quantization noise|
A frequency synthesizer capable of generating a clock signal having reduced digital spurs and reduced jitter is described. An apparatus includes a frequency modulator configured to generate a divide control signal and a digital quantization error signal in response to a divide ratio.
|Isolated switching mode power supply and the method thereof|
An isolated switching mode power supply, having: a transformer having a primary winding, a secondary winding and a third winding; a current limit comparator configured to provide a current limit signal based on the current sense signal and the peak current signal; a logic circuit configured to provide a logic control signal based on the frequency control signal and the current limit signal; a startup control circuit configured to generate a startup control signal based on the current sense signal; a load detecting circuit configured to provide a load detecting signal based on the second feedback signal and the switching signal; and a selector configured to provide the logic control signal or the startup control signal based on the load detecting signal.. .
|Overload detection in a switched mode power supply|
A switched mode power supply includes a switching device, the switched mode power supply being operable to convert an input voltage (vin) to an output voltage (vout) by switching the switching device, and a voltage regulator operable to generate a feedback signal based on at least one of the output voltage and an output current of the switched mode power supply. The power supply further comprises an overload detector, which is arranged to receive the feedback signal and operable to determine whether the feedback signal is outside a predetermined range.
|Comparator with self-limiting positive feedback|
A method and circuit for attenuating positive feedback in a comparator in one embodiment includes an amplifier configured to compare a first input signal with a second input signal and to provide an output based upon the comparison, a non-linear function with a first input operably connected to an output of the amplifier, and a feedback loop operably connected to the output of the non-linear function and to a second input of the non-linear function, the feedback loop including a feedback limiting circuit configured to attenuate a feedback signal to the second input of the non-linear function.. .
|System and method of balanced slope compensation for switch mode regulators|
A modulator with balanced slope compensation including a control network, a slope compensation network, an offset network and an adjust network. The control network receives a feedback signal indicative of an output voltage and provides a loop control signal.
|Voltage regulator and voltage regulation method|
A voltage regulator, alternatively operating in an active mode in response to an enabled mode indication signal, and operating in a standby mode in response to the disabled mode indication signal, is provided. The voltage regulator comprises a regulation unit and a feedback circuit.
|Light emitting element driving circuits with dimming function and control methods thereof|
A controller used in a light emitting element driving circuit, wherein the light emitting element driving circuit has a power converter configured to provide an output current for the light emitting element. The controller has a dimming processing unit and a current control unit.
|Method and apparatus for measuring and controlling electrolytically-active species concentration in aqueous solutions|
A method is provided for measuring an electrolytically-active species concentration in an aqueous or non-aqueous solution for use in providing control of the concentration of the species in a source solution thereof based on the measurements. In the method, a sample containing an electrolytically-active species is added into a measurement cell that has a working electrode and an auxiliary electrode, and a constant current is applied to the measurement cell while the working and auxiliary electrodes are in contact with the sample with monitoring of voltage difference across the electrodes until a change in the voltage difference is detected.
|Wearable headset with self-contained vocal feedback and vocal command|
A headset includes a wearable body, first and second earphones extending from the wearable body, controls for controlling an external communication/multimedia device wirelessly, a microphone for picking up vocal data from a user of the headset system and a signal processing unit. The signal processing unit includes circuitry for processing the vocal data into a distinctly audible vocal feedback signal, circuitry for enhancing the vocal feedback signal thereby producing an enhanced vocal feedback signal and circuitry for mixing the enhanced vocal feedback signal with audio signals originating from the external communication/multimedia device, thereby producing a mixed output signal and then sending the mixed output signal to the user via the earphones.
|Circuits and methods for dfe with reduced area and power consumption|
A 1/n-rate decision feedback equalizer (dfe) and method include a plurality of branches. Each branch includes a summer circuit configured to add a feedback signal to a received input, and a latch configured to receive an output of the summer circuit in accordance with a clock signal.
|Channel characterization and training within multiple user, multiple access, and/or mimo wireless communications|
Channel characterization and training within multiple user, multiple access, and/or mimo wireless communications. Within such communication systems, there can be a number of devices (e.g., stas) that communicate with a single device (e.g., ap).
To effectively control the amplitude vs. Power supply voltage characteristics, for example, in an et amplifier.
|Phase locked loop circuit|
A phase locked loop circuit includes a phase frequency detector, a control circuit, a charge pump, a loop filter, a supply circuit, a ring oscillator, a frequency divider and a voltage detector. The phase frequency detector generates a frequency-increasing signal and a frequency-decreasing signal according to a phase difference between an input signal and a feedback signal.
|Detecting method and detecting device of abnormality of differential signal receiving terminal of liquid crystal displaying module|
A detecting method of abnormality of a differential signal receiving terminal of a liquid crystal displaying module, including: inputting high level signals to lvds0+, lvds0−, lvds1+, lvds− in order, in which only one high level signal is inputted to one of the differential signal lines and the other differential signal lines are kept in high impedance states simultaneously; and receiving feedback signals from all the differential signal lines and determining whether the differential signal lines of detecting units are abnormal or not according to the received feedback signals. The abnormality of the differential signal lines includes terminal resistive opens of the differential signal lines, a short circuit between two adjacent groups of differential signal lines, and short circuits of the differential signal lines to ground or to a power supply caused by abnormal power supplying sequence.
|Low-dropout voltage regulator|
A low-dropout voltage regulator includes a power transistor configured to receive an input voltage and to provide a regulated output voltage at an output voltage node. The power transistor includes a control electrode configured to receive a driver signal.
|Automation equipment control system|
A automation equipment control system comprises a general purpose computer with a general purpose operating system in electronic communication with a real-time computer subsystem. The general purpose computer includes a program execution module to selectively start and stop processing of a program of equipment instructions and to generate a plurality of move commands.
|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.. .
|Dynamic transmission set indication|
The present invention proposes methods and apparatuses and computer program products for dynamic transmission set indication in scenarios in which a terminal is enabled for single cell transmission sic as well as for coordinated multipoint transmission comp. To this extent, appropriate information is being fed back from the terminal to the base station via feedback signaling channels.
|Switching control circuit with signal process to accommodate the synchronous rectifier of power converters|
A switching control circuit of a power converter according to the present invention comprises an input circuit and a clock generator. The input circuit is coupled to receive a feedback signal for generating a switching signal.
|Method and apparatus to control a power factor correction circuit|
An example on time control circuit for use in a power factor correction (pfc) controller includes an amplifier, an integrator, and a comparator. The amplifier generates an error signal that is representative of a difference between a feedback signal and a reference value.
|Backlight drive voltage control device, backlight drive voltage control method and television|
A backlight drive voltage control device, comprising: a detecting unit connected to a controller, which detects the current states of the lamp strings of the divisions of the backlight sources of a liquid crystal screen, sends feedback signals to the controller; the controller which sends a voltage adjustment control signal to an ac to dc converter according to the feedback signals, and acquires the voltage adjustment amount of each lamp string according to the voltage adjustment control signal, selects lamp strings which voltage adjustment amounts are larger than the threshold, and sends the closing feedback control signal to the detecting unit; and the ac to dc converter which outputs corresponding voltages to the lamp strings according to the voltage adjustment control signal.. .
|Electronic device including overheating protection device and method for using the same|
An electronic device includes a main board and a heat dissipation device, and the heat dissipation device includes a plurality of fans and a micro control unit (mcu). The main board and the plurality of fans are electrically connected to the mcu.