06th week of 2022 patent applcation highlights part 64 |
Patent application number | Title | Published |
20220045617 | RESONANT CORE POWER SUPPLY - A resonant core power supply includes a core with excitation, resonant, and load windings where the resonant winding is coupled to a tank circuit and a controller manipulates the phase, amplitude and waveform of an excitation signal applied to the excitation winding. | 2022-02-10 |
20220045618 | MULTIPLE-PORT BIDIRECTIONAL CONVERTER AND CONTROL METHOD THEREOF - A bidirectional DC-DC converter with three or more ports is described along with a method of operation thereof. The converter utilizes a common transformer for all ports and allows for power transfer from any port to any or all of the remaining ports. The converter may utilize a controller which implements variable-frequency control, delay-time control, and/or phase-delay control to achieve power transfer as desired between the converter ports. In some cases, power transfer between ports can operate similar to a series-resonant converter or a dual active bridge converter. | 2022-02-10 |
20220045619 | CHARGING AND DISCHARGING DEVICE AND CHARGING AND DISCHARGING SYSTEM OF ELECTRIC VEHICLE - A charging and discharging device includes a transformer consisting of a primary winding and multiple secondary windings including at least a first secondary winding and a second secondary winding; multiple ports electrically connected to the primary winding and the multiple secondary windings of the transformer, respectively, wherein the multiple ports at least include a first port electrically connected to the primary winding via a first conversion circuit; a second port electrically connected to the first secondary winding via a second conversion circuit; and a third port electrically connected to the second secondary winding via a third conversion circuit; and a first controllable switch connected between the first conversion circuit and the primary winding. | 2022-02-10 |
20220045620 | INRUSH CURRENT SUPPRESSION DEVICE AND MOTOR DRIVE DEVICE - An inrush current suppression device is an inrush current suppression device that suppresses an inrush current flowing from a DC power supply through a mechanical switch, and includes: a first capacitor having one end connected to a positive terminal of the DC power supply through the mechanical switch; a semiconductor switching element connected to the other end of the first capacitor and a negative terminal of DC power supply between the other end of the first capacitor and the negative terminal of the DC power supply; a resistance element connected in parallel to the semiconductor switching element; and a control circuit for controlling the semiconductor switching element. The control circuit has a first output port, and controls ON time and OFF time of the semiconductor switching element by outputting a PWM signal from the first output port to the semiconductor switching element after the mechanical switch is closed. | 2022-02-10 |
20220045621 | HYBRID MULTI-LEVEL INVERTER SYSTEM FOR SWITCHED SERIES/PARALLEL SOURCES - A single-phase hybrid multilevel inverter capable of producing a higher number of output voltage levels using fewer power switches and DC voltage sources compared to existing multilevel inverters. The levels are synthesized by switching the DC voltage sources in series/parallel combinations. An auxiliary circuit is introduced to double the number of levels by creating an intermediate step in between two levels. In addition, a zero level is introduced to overcome the inherent absence of this level in the original circuit. To improve the total harmonic distortion, a hybrid modulation technique is utilized. A 300 W, a thirteen level multilevel inverter (including the zero level) was designed and constructed. The circuit was tested with a no-load, resistive load and resistive-inductive load. The experimental results closely match simulated and mathematical analyses. | 2022-02-10 |
20220045622 | FLYING CAPACITOR (FC)-TYPE 3-LEVEL POWER CONVERSION DEVICE - An FC-type 3-level power conversion device turns on or off first to fourth semiconductor switching elements based on comparison between a flying capacitor voltage and a half of higher-voltage side filter capacitor voltage, comparison between the higher-voltage side filter capacitor voltage and the flying capacitor voltage plus a lower-voltage side filter capacitor voltage, comparison between the flying capacitor voltage and the lower-voltage side filter capacitor voltage, and comparison between the lower-voltage side filter capacitor voltage or the higher-voltage side filter capacitor voltage and a filter capacitor voltage command value, so that an electric current flows along a path including a filter reactor L and charging a flying capacitor so as to charge a lower-voltage side filter capacitor or a higher-voltage side filter capacitor to predetermined values. | 2022-02-10 |
20220045623 | MULTI-LEVEL CIRCUIT, THREE-PHASE MULTI-LEVEL CIRCUIT, AND CONTROL METHOD - A multi-level circuit, a three-phase multi-level circuit, and a control method are provided. The multi-level circuit includes two groups of bus capacitors that are connected in series. The circuit further includes a plurality of switching transistor branches that are connected in parallel to the capacitors, where each switching transistor branch includes a first half bridge and a second half bridge, and a common terminal of the two half bridges is grounded. Furthermore, the circuit includes two coupled inductors, where each input terminal of each coupled inductor is connected to a common terminal of two switching transistors in the first half bridge in the switching transistor branches. In this circuit, a quantity of groups of bus capacitors is decreased and circuit design complexity is reduced. Further, a dropout voltage of the switching transistors is reduced. | 2022-02-10 |
20220045624 | Power Converter and Power Conversion System - A power converter that performs power conversion between a DC line and an AC system includes a power conversion circuit including a plurality of submodules connected in series with each other, and a controller to control each of the plurality of submodules. Each submodule includes a switching circuit and a capacitor connected in parallel with the switching circuit. When a circuit breaker provided between the AC system and the power conversion circuit is opened, the controller drives the switching circuit of at least one submodule of the plurality of submodules such that the capacitor of the at least one submodule is discharged via a discharge circuit connected to the DC line. | 2022-02-10 |
20220045625 | OPERATING A MULTILEVEL CONVERTER - A method of operating a multilevel converter having multiple phase modules, each with three phase module branches. In a first switching position, a switching device of each phase module connects an alternating voltage connection of the phase module to a first connection point between a first phase module branch and a third phase module branch. In a second switching position, the switching device connects the alternating voltage connection to a second connection point between the third phase module branch and a second phase module branch. In the method, circulating currents of the multilevel converter are controlled in accordance with total energy variables and differential energy variables of the phase modules to balance the energy between the phase module branches. | 2022-02-10 |
20220045626 | POWER CONVERTER - In a power converter, each of a positive busbar and a negative busbar includes a first current path that has a first thermal resistance and is a current flow path between a power-source connection terminal and at least one terminal connection portion, and a second current path that has a second thermal resistance and is a current flow path between the power-source connection terminal and an element connection portion. The first thermal resistance of the first current path of at least one of the positive busbar and the negative busbar is lower than the second thermal resistance of the second current path of the at least one of the positive busbar and the negative busbar. | 2022-02-10 |
20220045627 | CONVERSION APPARATUS WITH THREE-LEVEL SWITCHING CIRCUIT AND METHOD OF OPERATING THE SAME - A conversion apparatus with a three-level switching circuit includes a DC conversion module, a three-level circuit, and a control unit. The three-level circuit includes a bridge arm assembly and a capacitor assembly. The capacitor assembly includes a first capacitor and a second capacitor connected to the first capacitor in series. The DC conversion module has a positive output end and a negative output end, and the positive output end and the negative output end are coupled to the bridge arm assembly. The control unit controls the switching of a second switch unit and a third switch unit to make the three-level circuit operate in a first state where the positive output end and the negative output end are connected to the first capacitor, and operate in a second state where the positive output end and the negative output end are connected to the second capacitor. | 2022-02-10 |
20220045628 | SYSTEM AND METHOD FOR POWER CONVERTER INTERFACING WITH MULTIPLE SERIES-STACKED VOLTAGE DOMAINS - According to various embodiments, a power conversion circuit is disclosed. The power conversion circuit includes at least one DC bus. The power conversion circuit further includes a plurality of DC-AC conversion units coupled to the DC bus and configured to convert a DC voltage into an AC voltage. The power conversion circuit also includes a multi-winding transformer comprising a magnetic core and a plurality of windings, where each DC-AC conversion unit is coupled to a corresponding winding of the multi-winding transformer. | 2022-02-10 |
20220045629 | CONTROL APPARATUS FOR VIBRATION TYPE MOTOR, AND DRIVING APPARATUS - A control apparatus for a vibration type motor includes a processor or circuit that serves as a driving signal generating unit configured to generate a driving signal of the vibration type motor; and a booster circuit configured to boost the driving signal. The driving signal generating unit changes a duty ratio of the driving signal based on a driving frequency of the vibration type motor or a current flowing through the vibration type motor. | 2022-02-10 |
20220045630 | CONTACT MEMBER, VIBRATION ACTUATOR INCLUDING CONTACT MEMBER, AND APPARATUS INCLUDING VIBRATION ACTUATOR - A contact member that makes it possible to reduce variations in characteristics of individual vibration actuators. The contact member is in contact with a vibration member. The contact member has a sintered body of metal powder as a base material. A contact surface of the sintered body, which is in contact with the vibration member, is formed by impregnated resin portions as pore portions of the sintered body in which resin has been impregnated, and non-impregnated as pore portions of the sintered body in which the resin has been impregnated. A ratio of the impregnated resin portions with respect to an entirety of the contact surface is 2% or more and 15% or less, and a ratio of the non-impregnated pore portions with respect to the entirety of the contact surface is 3% or more. | 2022-02-10 |
20220045631 | ENERGY STORAGE AND CONVERSION - A device for converting energy of a fluid to electrical energy is disclosed. The device comprises a pressure vessel having an inlet port for a fluid. A pair of charge collecting electrodes is spaced apart from each other along a collection direction and disposed within the pressure vessel. An electric field generator is configured to generate an electric field in the pressure vessel along a field direction to separate charged species in the fluid. Other disclosed devices provide a current flow delay to encourage charge build up or illumination with electromagnetic radiation. Yet other devices are arranged for fluid flow rather than pressure. Also disclosed is a system comprising any one of the disclosed devices and related methods. The disclosure may find application, for example, in providing a source of energy for an electric vehicle. | 2022-02-10 |
20220045632 | MULTI-MOTOR CONVERTER - A control system ( | 2022-02-10 |
20220045633 | APPARATUS AND METHOD FOR SENSING MOVEMENT INFORMATION OF ROTOR, AND ELECTRONIC DEVICE - An apparatus for sensing movement of a rotor includes: a rotor configured to rotate along a rotation axis; a first electrode and a second electrode disposed to be spaced apart from each other and arranged to surround the rotation axis; and a conductive contact member disposed on the rotor and configured to contact the first and second electrodes as the rotor receives force in a direction different from a direction of the rotation axis. | 2022-02-10 |
20220045634 | ROTATION SPEED REGULATION SYSTEM FOR ELECTRIC TOOL SWITCH - A rotation speed regulation system for an electric tool switch includes a controller, a resistance regulating copper foil electrically connected to the controller, and a resistance regulating reed matched with the resistance regulating copper foil. The resistance regulating copper foil includes a first foil and a second foil separated from each other. The first foil is an intact long strip foil. The second foil includes a plurality of short-circuit gold fingers arranged at equal intervals in the middle part and a full-resistance foil and a zero-resistance foil at both ends. The width of the short-circuit gold finger is 0.27 mm, and the distance between two adjacent short-circuit gold fingers is 0.2 mm. An inclination angle α is formed between the short-circuit gold finger and the sliding direction of the resistance regulating contact end, α is 107°-110° and the length L of the contact strip is 2.3-2.9 mm. | 2022-02-10 |
20220045635 | Series Shunt Wound DC Motor Driving Device and Equipment - The present invention provides a series shunt wound direct-current (DC) motor driving device and electrical equipment. The series shunt wound DC motor driving device provided by the present invention includes a series shunt wound DC motor, a DC power supply and a chopper. The chopper is provided with m chopping units; a control signal includes m unit control signals that respectively correspond to the m chopping units and are formed according to a preset phase stagger rule; each of the unit control signals includes w switching control signals that correspond to w switching control ends in the corresponding chopping units; m first power output ends of all the chopping units and m second power output ends of all the chopping units respectively correspondingly form m pairs of power output terminals; and m pairs of external wiring terminals of the series shunt wound DC motor are connected with the m pairs of power output terminals in a one-to-one correspondence manner, wherein m is a positive integer of being not less than 2; and w is 1, 2 or 4. | 2022-02-10 |
20220045636 | Method For Controlling Electronic Watch And Electronic Watch - A method for controlling an electronic watch is a method for controlling an electronic watch having a control device, the method comprising: when performing a first control processing, operating a first driving circuit to output a first motor drive signal, and rewriting a first polarity information in accordance with an output of the first motor drive signal, when ending output of the first motor drive signal, matching a second polarity information with the first polarity information, when performing a second control processing, operating a second driving circuit to output a second motor drive signal, and rewriting the second polarity information in accordance with an output of the second motor drive signal, and when ending output of the second motor drive signal, matching the first polarity information with the second polarity information. | 2022-02-10 |
20220045637 | METHOD FOR CONTROLLING AN ELECTRIC ROTARY MACHINE OPERATING AS A GENERATOR AND CORRESPONDING CONTROL SYSTEM FOR REDUCING THE VOLTAGE IN THE NETWORK IN THE EVENT OF A CUTOFF - A method for controlling a multi-phase rotary electric machine is disclosed. The stator of the machine is controlled by a control bridge having a plurality of parallel mounted switching arms, with each arm comprising a high-side switch and a low-side switch connected at a center tap connected to a phase of said rotary electric machine. The machine operates as a generator and is connected to an electrical network on board a motor vehicle. The method involves short-circuiting a phase winding of the stator when a measurement of the voltage of said network exceeds a first predetermined value, and after this, activating a switching arm, the center tap of which is connected to said at least one short-circuited phase winding, during which the intensity in the short-circuited winding is measured, if the measured intensity is positive, the high-side switch of said activated switching arm is moved to the closed position, otherwise, it is moved to the open position. | 2022-02-10 |
20220045638 | SYSTEMS AND METHODS FOR PERFORMING MOTOR CONTROL OPERATIONS AGNOSTIC OF SPEED DATA - A system may include an inverter configured to convert a direct current (DC) voltage to an alternating current (AC) voltage. The system may also include a control system communicatively coupled to the inverter. The control system may receive a torque current feedback from a motor and may generate, based on the torque current feedback, a command torque current and a command flux current. The control system may generate, based on the command torque current and the command flux current, a command torque voltage and a command flux voltage and may generate, based on a slip frequency and a rotor frequency, a command frequency. The control system may determine one or more operating parameters for the inverter based on the command frequency, the command torque voltage, and the command flux voltage and may control the inverter based on the one or more operating parameters. | 2022-02-10 |
20220045639 | BACKSPINNING MOTOR CONTROL - Examples include a method of control implemented in a variable speed drive for controlling an electric motor during backspin, wherein the method comprises includes: determining, by the variable speed drive, a mechanical power value occurring at a backspin speed and an estimated load torque; determining, by the variable speed drive, a specific electrical losses profile occurring at a motor flux level, wherein the specific electrical losses profile coincides with the mechanical power value; determining, by the variable speed drive, a flux reference and a speed reference to be applied to the motor to coincide with the specific electrical losses profile ; and controlling, by the variable speed drive, the backspin speed of the motor to maintain the coincidence with the specific electrical losses profile. | 2022-02-10 |
20220045640 | SAMPLING TRIGGER METHOD, MICROPROCESSOR, MOTOR CONTROLLER, AND ELECTRIC VEHICLE - This application relates to a motor controller applied to an electric vehicle, a microprocessor in the motor controller, and a sampling trigger method applied to the microprocessor. The sampling trigger method includes: a signal generation module generates an exciting fundamental wave signal to drive the resolver to work; a signal processing module determines an exciting symbol based on the exciting fundamental wave signal, where the exciting symbol includes alternate high-level signals and low-level signals, and the signal processing module further determines a zero crossing point signal of the exciting fundamental wave signal based on the exciting symbol; and a phase shift processing module performs phase shift processing on the zero crossing point signal to obtain a sampling trigger signal, to trigger the microprocessor to sample the resolver feedback signal. In this solution, fewer peripheral circuits of a chip are used, thereby improving a product integration degree. | 2022-02-10 |
20220045641 | POWER CONVERSION APPARATUS, DRIVE CONTROL SYSTEM, MACHINE LEARNING APPARATUS, AND MOTOR MONITORING METHOD - A power conversion apparatus includes a main circuit unit, a control unit, a current sensor, and a half-wave rectifier unit. The control unit includes current frequency calculation units and monitoring units. The current frequency calculation units calculate current frequencies based on at least either the rising timing or falling timing of current detection signals half-wave rectified by the half-wave rectifier unit. The monitoring units monitor the speed of a motor based on the current frequencies calculated by the current frequency calculation units. | 2022-02-10 |
20220045642 | DRIVE CONTROLLER FOR ELECTRIC MOTOR - The drive controller for the electric motor according to the present invention comprises two drive control systems for two winding sets of the electric motor, each drive control system includes a control circuit, an inverter, a power supply connector and a ground connector, the two control circuits are connected to an internal common ground, each rectifying element that passes a current from the common ground to each ground connector is provided in a line that connects the ground connector and the common ground, each current detection element is provided in a line that connects each positive power supply and a line between the rectifying element and the ground connector, and whether an open fault has occurred in the ground connector is diagnosed based on the voltage that is applied to the current detection element. | 2022-02-10 |
20220045643 | ROTATING ELECTRIC MACHINE DRIVE DEVICE - Provided is a drive device for a rotating electric machine, including: a power conversion unit configured to convert DC power supplied from a storage battery into AC power, and to supply the AC power to a rotating electric machine; and a control unit output a switching signal to the power conversion unit. The control unit is configured to set, when the storage battery is to be charged, in a case in which a temperature of the storage battery input from an outside is lower than a set temperature suitable for charging, the switching signal for the power conversion unit so as to be different from the switching signal in a normal drive state of the rotating electric machine. | 2022-02-10 |
20220045644 | KIRIGAMI-BASED MULTI-AXIS TRACKING DEVICES AND SYSTEMS - A device includes a support structure having a plurality of concentric cuts through the support structure that define a set of structure sections. The device also includes an insert assembly supported by the support structure at an inner structure section of the set of structure sections. The inner structure section is configured to tilt the insert assembly at a tilt angle in accordance with a displacement of a first outer structure section of the set of structure sections. | 2022-02-10 |
20220045645 | MULTIPLE ACTUATOR SYSTEM FOR SOLAR TRACKER - A solar tracking system is provided and includes a solar array, a support structure configured to support the solar array, a base configured to rotatably support the support structure, and an articulation system configured to articulate the support structure relative to the base. The articulation system includes a gearbox that is coupled to the support structure and an actuator that is configured to extend and retract. The actuator includes a first end portion and a second, opposite end portion, wherein the first end portion is rotatably coupled to the base and the second end portion is coupled to the gearbox. Extension of the actuator causes the support structure to rotate about the base in a first direction and retraction of the actuator causes the support structure to rotate about the based in a second, opposite direction. | 2022-02-10 |
20220045646 | FLICKER NOISE ELIMINATION IN A DOUBLE BALANCED MIXER DC BIAS CIRCUIT - A transmitter that reduces 3 | 2022-02-10 |
20220045647 | AMPLIFIER CIRCUIT USING VOLTAGE-TO-CURRENT CONVERSION TO ACHIEVE UNITY FEEDBACK FACTOR AND INPUT COMMON-MODE REJECTION FOR LINEAR AMPLIFIER AND ASSOCIATED ENVELOPE TRACKING SUPPLY MODULATOR USING THE SAME - An amplifier circuit includes a voltage-to-current conversion circuit and a current-to-voltage conversion circuit. The voltage-to-current conversion circuit generates a current signal according to an input voltage signal, and includes an operational transconductance amplifier (OTA) used to output the current signal at an output port of the OTA. The current-to-voltage conversion circuit generates an output voltage signal according to the current signal, and includes a linear amplifier (LA), wherein an input port of the LA is coupled to the output port of the OTA, and the output voltage signal is derived from an output signal at an output port of the LA. | 2022-02-10 |
20220045648 | METHOD AND APPARATUS FOR MODULATING AMPLIFIER SUPPLY VOLTAGE FOR REDUCING POWER DISSIPATION - A circuit to modulate the power supply to track input or output voltages provided to or output by a plurality of amplifiers to reduce power dissipation is provided. The circuit may include a peak detection circuit configured to receive a plurality of voltages respectively corresponding to the plurality of amplifiers, and to detect and output information regarding a maximum instantaneous voltage from the received plurality of voltages, and a summing circuit configured to output a sum of the information regarding the maximum instantaneous voltage and an amplifier headroom voltage. A reference voltage may be provided for the supply voltage responsive to the output sum. The circuit may also include a scaling circuit configured to scale the output sum, and the reference voltage may be a scaled reference voltage output by the scaling circuit. | 2022-02-10 |
20220045649 | SIGNAL PROCESSING METHOD, APPARATUS, AND SYSTEM - A signal processing system includes n paths of load modulation modules and a combination module, where then paths of load modulation modules are connected in parallel, an output end of each path of load modulation module is connected to an input end of the combination module, and n is an integer greater than 1; the n paths of load modulation modules include one path of main power amplification module and (n-1) paths of auxiliary power amplification modules, and the auxiliary power amplification modules are turned on when power values of signals received by input ends of the load modulation modules are greater than a first threshold; and the main power amplification module includes two outphasing power amplification units, and each path of auxiliary power amplification module includes two outphasing power amplifier arrays or one digital polar power amplifier array. | 2022-02-10 |
20220045650 | HIGH LINEARITY LOW NOISE AMPLIFIER - An amplifier circuit is disclosed. The amplifier circuit includes an input terminal configured to receive an input signal, an output terminal configured to transmit an output signal, and a first signal path including a first amplifying circuit, where the first amplifying circuit is configured to receive the input signal and to transmit a first amplified output to the output terminal, and where the first amplified output includes first amplifier circuit harmonic noise. The amplifier circuit also includes a second signal path including a second amplifying circuit, where the second amplifying circuit receives the input signal and transmits a second amplified output to the output terminal, and where the second amplified output includes second amplifier circuit harmonic noise. The output signal includes the first and second amplified outputs, and the first amplifying circuit harmonic noise is at least partially canceled by the second amplifying circuit harmonic noise in the output signal. | 2022-02-10 |
20220045651 | INPUT VOLTAGE ENDURANCE PROTECTION ARCHITECTURE - Provided is an input voltage endurance protection architecture applied to a high-voltage operational amplifier with high input amplitude and high linearity. The input voltage endurance protection architecture includes three parts: a main operational amplifier, an auxiliary operational amplifier and an input stage voltage endurance protection circuit. The main operational amplifier is a high-voltage general-purpose operational amplifier, the auxiliary operational amplifier is a single-stage differential amplifier, and the single-stage differential operational amplifier is connected to a degeneration resistor Rbias. In addition, the auxiliary operational amplifier has a same connection method as the main operational amplifier at a positive input terminal and a negative input terminal, and both the positive input terminal and the negative input terminal are protected by an input stage voltage endurance protection circuit and receive and process input signals simultaneously. | 2022-02-10 |
20220045652 | AMPLIFYING APPARATUS - An amplifying apparatus includes a zero point generating circuit, a level shift circuit, a transistor, and an amplifying circuit. A first terminal of the zero point generating circuit is coupled to an output terminal of the amplifying apparatus. A first terminal of the level shift circuit is coupled to the output terminal of the amplifying apparatus. A first terminal of the transistor is coupled to a supply voltage. A second terminal of the transistor is coupled to the output terminal of the amplifying apparatus. A control terminal of the transistor is coupled to a second terminal of the level shift circuit. An input terminal of the amplifying circuit is coupled to an input terminal of the amplifying apparatus. An output terminal of the amplifying circuit is coupled to the output terminal of the amplifying apparatus. | 2022-02-10 |
20220045653 | MULTI-FREQUENCY BAND COMMUNICATION BASED ON FILTER SHARING - The present disclosure relates to systems and methods for operating transceiver circuitry to transmit or receive signals on various frequency ranges. To do so, a transmitter or a receiver of the transceiver circuitry is selectively coupled to or uncoupled from an antenna of the transceiver circuitry. Additionally, radio frequency filters may be individually or collectively coupled to and/or uncoupled from the antenna to filter different frequencies in the transmitting or receiving signals. | 2022-02-10 |
20220045654 | POWER AMPLIFIER - A power amplifier includes: plural amplifiers; a tournament-tree-shaped circuit connected with the plural amplifiers and including plural transmission lines arranged in a tournament-tree shape; and plural difference frequency short circuits shunt-connected with plural nodes of the tournament-tree-shaped circuit, wherein each of the plural difference frequency short circuits includes an inductor and a capacitor connected in series, resonant frequencies of the plural difference frequency short circuits become lower as the plural difference frequency short circuits are more separated from the plural amplifiers, and the difference frequency short circuits having equivalent resonant frequencies are connected with plural nodes in the same stage among the plural nodes. | 2022-02-10 |
20220045655 | CLASS-D AMPLIFIER WHICH CAN SUPPRESS DIFFERENTIAL MODE POWER NOISE - A class-D amplifier configured to adjust at least one input signal to at least one output signal. The class-D amplifier comprises: a loop filter, configured to receive the input signal; a PWM circuit, configured to generate at least one PWM signal; a summing circuit, coupled between an output of the loop filter and an input of the PWM circuit; an output circuit operating at a supply voltage, configured to generate the output signal responding to the PWM signal; and a supply voltage filter, configured to monitor the supply voltage to generate a filtered signal to the summing circuit. The summing circuit is configured to sum the output of the loop filter and the filtered signal to adjust a common-mode level of the input of the PWM circuit. | 2022-02-10 |
20220045656 | CLASS-D AMPLIFIER WITH NESTED FEEDBACK LOOPS - A class-D amplifier with multiple “nested” levels of feedback. The class-D amplifier surrounds an inner feedback loop, which takes the output of a switching amplifier and corrects for errors generated across the switching amplifier, with additional feedback loops that also take the output of the switching amplifier. | 2022-02-10 |
20220045657 | OFFSET COMPENSATION CIRCUITRY FOR AN AMPLIFICATION CIRCUIT - Offset compensation circuitry for an amplification circuit. One example embodiment is a method of compensating a primary operational amplifier including: creating, by way of a companion circuit, a square wave having an amplitude, a period, and a direct current bias (DC bias), the amplitude proportional to an offset of the primary operational amplifier; integrating, by the companion circuit, the amplitude of the square wave for less than the period of the square wave, the integrating creates a compensation signal; and applying the compensation signal to the primary operational amplifier. | 2022-02-10 |
20220045658 | TWO-STAGE AUDIO GAIN CIRCUIT BASED ON ANALOG-TO-DIGITAL CONVERSION AND AUDIO TERMINAL - Disclosed are a two-stage audio gain circuit based on analog-to-digital conversion and an audio terminal. The two-stage audio gain circuit includes a PGA configured to receive an analog audio signal and perform programmable gain amplification processing on the received analog audio signal; an ADC configured to convert the analog audio signal after the programmable gain amplification processing into a digital audio signal and output the digital audio signal; a first AGC gain unit configured to perform a first AGC processing on the digital audio signal and output a first gain adjustment value to the PGA, for the PGA to perform gain adjustment on the received analog audio signal; and a second AGC gain unit configured to perform a second AGC processing on the digital audio signal and output a second gain adjustment value to the PGA, for the PGA to perform gain adjustment on the received analog audio signal. | 2022-02-10 |
20220045659 | METHODS AND SYSTEMS FOR EQUALISATION - A method of equalising an audio signal derived from a microphone, the method comprising: receiving the audio signal; applying an order-statistic filter to the audio signal in the frequency domain to generate a statistically filtered audio signal; equalising the received audio signal based on the statistically filtered audio signal to generate an equalised audio signal. | 2022-02-10 |
20220045660 | CABLE TELEVISION SIGNAL SPLITTING APPARATUS - A cable television signal splitting apparatus transmits a cable television system downstream signal and a cable television system upstream signal. The cable television signal splitting apparatus includes a splitter, a bi-directional amplifying circuit and a splitting circuit. The bi-directional amplifying circuit is electrically connected to the splitter. The splitting circuit is electrically connected to the bi-directional amplifying circuit. The bi-directional amplifying circuit is arranged between the splitter and the splitting circuit. The splitter receives the cable television system downstream signal and transmits the cable television system downstream signal to the bi-directional amplifying circuit. The splitting circuit receives the cable television system upstream signal and transmits the cable television system upstream signal to the bi-directional amplifying circuit. | 2022-02-10 |
20220045661 | TRANSVERSELY-EXCITED FILM BULK ACOUSTIC RESONATOR COMPRISING SMALL CELLS - Acoustic resonator devices are disclosed. An acoustic resonator device includes a plurality of cells electrically connected in parallel. Each cell includes an interdigital transducer (IDT) on a piezoelectric plate, the IDT having at least 15 and not more than 35 interleaved fingers. | 2022-02-10 |
20220045662 | SINGLE MODE CAVITY FILTER - A single mode cavity filter having at least three rectangular or elliptical resonant cavities and at least four coupling irises aligned along a straight axis is disclosed. The filter is configured to be tuned by way of an electro-mechanical device. The filter has tuning rods located in each of the cavities and configured to change, in use, the tuning of the filter. The tuning rods are aligned along an arcuate axis and the electro-mechanical device is configured to move the tuning rods according to an identical depth by way of a single motor in the electro-mechanical device. | 2022-02-10 |
20220045663 | ACOUSTIC FILTER WITH IMPROVED REFLECTIVITY - A filter circuit comprises a main operating unit (MU) arranged in the series signal line providing most of the filter function of the filter circuit. A micro acoustic last series resonator (RL | 2022-02-10 |
20220045664 | RADIO FREQUENCY (RF) FILTER WITH INCREASED SHUNT RESONATOR COUPLING COEFFICIENT - Certain aspects of the present disclosure generally relate to a filter, such as an acoustic resonator filter. An example filter generally includes a first series resonator coupled between a first port of the filter and a second port of the filter, the first series resonator including a first piezoelectric layer disposed between a first electrode and a second electrode of the first series resonator. The filter also includes a first shunt resonator coupled between a first node of the filter and a reference potential node of the filter, the first shunt resonator including a second piezoelectric layer disposed between a third electrode and a fourth electrode of the first shunt resonator. The first node is coupled between the two ports, and the second piezoelectric layer's thickness is greater than the first piezoelectric layer's thickness. | 2022-02-10 |
20220045665 | LEVEL CONVERTER CIRCUIT - An embodiment level converter circuit is configured to receive, as a current supply, a current proportional to temperature. | 2022-02-10 |
20220045666 | FREQUENCY MANAGEMENT FOR QUANTUM CONTROL - A system comprises quantum control interconnect circuitry configured to receive a plurality of fixed-frequency signals, a variable-frequency signal, a quantum control pulse, a quantum element readout pulse, and a quantum element return pulse. The circuitry is operable to upconvert the quantum control pulse using the fixed-frequency signals. The circuitry is operable to upconvert the readout pulse using the variable-frequency signal. The circuitry is operable to downconvert the return pulse using the variable-frequency signal. | 2022-02-10 |
20220045667 | LOW-LOSS BI-DIRECTIONAL PASSIVE LSB PHASE SHIFTER IN MM-WAVE CMOS - A phase shifter with a first port and a second port has a triple inductor network with a center inductor connected to the first port and the second port, and first and second peripheral inductors each electromagnetically coupled to the center inductor. A resistance switch network that is connected to the first and second peripheral inductors. The resistance switch network is selectively activatable to set a first state defined at least by a first resistance in a series circuit with the first and second peripheral inductors, a second state defined at least by a second resistance in the series circuit, and a third state defined at least by a third resistance in the series circuit. A transmission signal from the first port to the second port is shifted in phase by a prescribed angle corresponding to forward transmission coefficients for the first state, second state, and third state. | 2022-02-10 |
20220045668 | DELAY CONTROL DEVICE AND TUNABLE DELAY DEVICE - A delay control device for controlling a delay circuit includes an oscillator, a counter, and an output control circuit. The oscillator generates an internal clock signal according to an external clock signal. The counter generates an accumulative signal according to the internal clock signal. The counter is selectively reset by the external clock signal. The output control circuit generates a delay indication signal according to the accumulative signal. The delay time of the delay circuit is adjusted according to the delay indication signal. | 2022-02-10 |
20220045669 | COMPARATOR - A comparator includes: a first stage circuit, configured to receive a voltage signal to be compared and a reference voltage signal Vref, and to generate and output a first amplifying signal and a second amplifying signal based on the voltage signal to be compared and the reference voltage signal Vref; a second stage circuit, connected with the first stage circuit, configured to generate and latch a first output signal and a second output signal based on the first amplifying signal and the second amplifying signal; wherein the first stage circuit and/or the second stage circuit include(s) a first pair of cross-coupled transistors. | 2022-02-10 |
20220045670 | ELECTRONIC SWITCH AS A DAMPING ELEMENT - An electronic switch for connecting units of a power supply system has a semiconductor switch, an actuation circuit and a current/voltage sensor for detecting current flow through the electronic switch. The actuation circuit operates the semiconductor switch, depending on oscillations measured by the current/voltage sensor, in an activated state, a deactivated state or a linear mode. A power supply system having the electronic switch for connecting with the electronic switch two electrical sub-networks and a method for operating the electronic switch are also disclosed. The semiconductor switch is operated at least temporarily in the linear mode for damping oscillations. | 2022-02-10 |
20220045671 | DRIVE CIRCUIT, DRIVE METHOD, AND SEMICONDUCTOR SYSTEM - A drive circuit includes: a control section generating a control signal; a first level shift section raising a level of a signal from the control section; a high side drive section controlling a semiconductor device; and a second level shift section lowering a level of a signal from the high side drive section for input to the control section. The high side drive section has an error detection section maintaining an output of an error detection signal when the semiconductor device is in an error status until a release signal is input, the control section has an error handling section outputting the release signal to the high side drive section via the first level shift section when the error detection signal is input via the second level shift section, and the error detection section stops the output of the error detection signal when the release signal is input. | 2022-02-10 |
20220045672 | SAFE ELECTRONIC SWITCH - An electronic switch has a first, a second and a third connection and is configured to disconnect a current flow between the first and the second connection. An energy source is connected between the first and the third connection, and a regenerative load is connected between the second and the third connection. The electronic switch includes a semiconductor switch capable of switching currents of different polarity. A fuse is connected between the first connection and the semiconductor switch. A first short-circuiter is connected between the input of the semiconductor switch and the third connection, and a second short-circuiter is connected between the output of the semiconductor switch and the third connection. The fuse has a current trigger threshold between a permanently permitted current and a maximally permitted current of the semiconductor switch. An electrical network having such electronic switch and a method for operating an electronic switch are disclosed. | 2022-02-10 |
20220045673 | OFF CHIP DRIVING SYSTEM AND SIGNAL COMPENSATION METHOD - An off chip driving system includes a decision circuit, multiple first and second adjustable-enhancement circuits, and multiple first and second drivers. The decision circuit outputs a first and a second decision signal according to a clock and an input data. Each first adjustable-enhancement circuit generates one of first control signals in response to the first and the second decision signal and one of first optional signals. Each second adjustable-enhancement circuit generates one of second control signals in response to the first and the second decision signal and one of second optional signals. Each first driver is coupled to the corresponding first adjustable-enhancement circuit and configured to be enabled in response to the corresponding first control signal. Each second driver is coupled to the corresponding second adjustable-enhancement circuit and configured to be enabled in response to the corresponding second control signal. | 2022-02-10 |
20220045674 | INSULATED GATE POWER DEVICE WITH INDEPENDENTLY CONTROLLED SEGMENTS - A design technique is disclosed that divides up a cellular power switch into different size segments. Each segment is driven by a different driver circuit. The selection of the combination of segments is made to minimize the combined conduction and switching losses of the power switch. For example, for very light loads, switching losses dominate so only a small segment is activated for driving the load. For medium and high load currents, conduction losses become more significant, so additional segments are activated to minimize the total losses. In one embodiment, the number of cells in the segments is binary weighted, such as 1×, 2×, and 4×, so that there are seven different combinations of segments. The drivers may be configured to achieve the same or different slew rates of the segments, such as to reduce transients. The segments may all be in the same die or a plurality of dies. | 2022-02-10 |
20220045675 | DRIVING CIRCUIT - A driving circuit includes: a primary driving module configured to receive a first signal and generate a second signal based on the first signal, driving capability of the second signal being greater than that of the first signal; and an auxiliary driving module connected to an output terminal of the primary driving module and configured to receive the first signal and generate an auxiliary driving signal based on the first signal, the auxiliary driving signal being configured to shorten a rise time of the second signal. | 2022-02-10 |
20220045676 | CIRCUITRY FOR PROVIDING DIGITALLY STABLE GROUND - An apparatus attachable to a luminaire includes circuitry for converting alternating current power into direct current (DC) power and providing a digitally stable ground for operation of a processor-based device. The circuitry includes a transformer isolating a primary side from a secondary side of the circuitry. A switching controller (e.g., a pulse width modulation controller) on the primary side directs a switching circuit to selectively permit current flow through a primary side of the transformer to a first ground node. A secondary winding of the transformer sources a rectified DC output relative to a second ground node that is isolated from the first ground node. In some cases, compensation on the secondary winding side provides isolated feedback to the controller, such as via an optical isolator. The controller directs the switching circuit based at least partially on the feedback and input from an auxiliary winding of the transformer. | 2022-02-10 |
20220045677 | CIRCUITRY FOR PROVIDING DIGITALLY STABLE GROUND - A small cell networking device mountable to a streetlight fixture includes circuitry for converting alternating current power into direct current (DC) power and providing a digitally stable ground for operation of the small cell device. The circuitry includes a transformer isolating a primary side from a secondary side of the circuitry. A switching controller on the primary side directs a switching circuit to selectively permit current flow through a primary side of the transformer to a first ground node on the primary side. A secondary winding of the transformer sources a rectified DC output relative to a second ground node that is isolated from the first ground node. In some cases, compensation on the secondary winding side provides isolated feedback to the controller, such as via an optical isolator. The controller directs the switching circuit based at least on the feedback and input from an auxiliary winding of the transformer. | 2022-02-10 |
20220045678 | CIRCUIT DEVICE - A circuit device includes an output terminal, an output transistor, and a gate voltage control circuit. The output transistor is provided between a first power supply node and the output terminal. The gate voltage control circuit changes a gate voltage of the output transistor at a first temporal voltage change rate after an input signal changes from a first logic level to a second logic level, changes the gate voltage at a second temporal voltage change rate smaller than the first temporal voltage change rate after the gate voltage reaches a first determination voltage, and changes the gate voltage at a third temporal voltage change rate greater than the second temporal voltage change rate after the gate voltage reaches a second determination voltage. | 2022-02-10 |
20220045679 | SPDT SWITCH FOR IMPROVING POWER TRANSFER CAPABILITY - Provided is a single pole double through (SPDT) switch including a series switching unit including first and second series switching elements commonly connected to a common input port, and a shunt switching unit including a plurality of shunt switching elements connected in parallel to a first signal path connecting the common input port to a first output port and a second signal path connecting the common input port to a second output port, wherein first and second inductors are respectively connected to gate terminals of the first and second series switching elements. | 2022-02-10 |
20220045680 | HIGH SPEED CIRCUIT WITH DRIVER CIRCUIT - A high-speed circuit with a high-voltage (HV) driver circuit. The high-speed circuit has a driver circuit and a level shifter. The driver circuit includes HV components which are operated in an HV domain. The level shifter includes low-voltage (LV) components which are operated in an LV domain. The level shifter translates signals from the LV domain to the HV domain to generate control signals for the driver circuit. The high-speed circuit may include a protection voltage generator converting a power supply voltage and a power ground voltage to generate a first direct-current bias voltage (VBP) and a second direct-current bias voltage (VBN) to bias the LV components of the level shifter. The LV components of the level shifter include input transistors and protection transistors. Gate voltages of the protection transistors may be tied to VBP or VBN. | 2022-02-10 |
20220045681 | SEMICONDUCTOR DEVICE - According to one embodiment, a semiconductor device includes first, second, third, and fourth circuits. A first voltage is applied to the first circuit. A second voltage is applied to each of the second, third and fourth circuits. The third circuit is configured to generate a first control signal and a second control signal based on a signal generated by the first circuit and a signal generated by the second circuit. The fourth circuit is configured to output an output signal based on the first control signal and the second control signal. The output signal is brought to a high impedance state when at least one of the first voltage or the second voltage is not applied. | 2022-02-10 |
20220045682 | LEVEL SHIFTERS AND SEMICONDUCTOR DEVICES INCLUDING THE SAME - A level shifter includes an input circuit configured to generate and output first and second intermediate signals based on an input signal that transitions between a first voltage level and a second voltage level. The level shifter includes a feed forward circuit configured to receive the first intermediate signal from the input circuit and generate and output a third intermediate signal enabled in a part of a period in which the first intermediate signal is enabled and to receive the second intermediate signal from the input circuit and generate and output a fourth intermediate signal enabled in a part of a period in which the second intermediate signal is enabled. Moreover, the level shifter includes a level shifting circuit configured to receive the first through fourth intermediate signals and to shift the input signal to an output signal that transitions between a third voltage level and the second voltage level. | 2022-02-10 |
20220045683 | LOGIC CIRCUIT FORMED USING UNIPOLAR TRANSISTOR, AND SEMICONDUCTOR DEVICE - A semiconductor device using unipolar transistors, in which high and low levels are expressed using high and low power supply potentials, is provided. The semiconductor device includes four transistors, two capacitors, two wirings, two input terminals, and an output terminal. A source or a drain of the first transistor and a source or a drain of the fourth transistor are electrically connected to the first wiring. A gate of the fourth transistor is electrically connected to the first input terminal, and a gate of the second transistor is electrically connected to the second input terminal. A source or a drain of the second transistor and a source or a drain of the third transistor are electrically connected to the second wiring. The first transistor, the second transistor, and the two capacitors are electrically connected to the output terminal. | 2022-02-10 |
20220045684 | CHARGE PUMP, PHASE-LOCKED LOOP CIRCUIT, AND CLOCK CONTROL APPARATUS - A charge pump ( | 2022-02-10 |
20220045685 | PHASE SYNCHRONIZATION UPDATES WITHOUT SYNCHRONOUS SIGNAL TRANSFER - Embodiments of the present disclosure provide systems and methods for realizing phase synchronization updates based on an input system reference signal SYSREF without the need to synchronously distribute the SYSREF signal on a high-speed domain. In particular, phase synchronization mechanisms of the present disclosure are based on keeping a first phase accumulator in the device clock domain and using a second phase accumulator in the final digital clock domain to asynchronously transmit phase updates to the final digital clock domain. Arrival of a new SYSREF pulse may be detected based on the counter value of the first phase accumulator, which value is asynchronously transferred and scaled to the second phase accumulator downstream. In this manner, even though the SYSREF signal itself is not synchronously transferred to the second phase accumulator, the phase updates from the SYSREF signal may be transferred downstream so that the final phase may be generated deterministically. | 2022-02-10 |
20220045686 | HIGH-PASS SHAPED DITHER IN CONTINUOUS-TIME RESIDUE GENERATION SYSTEMS FOR ANALOG-TO-DIGITAL CONVERTERS - Mechanisms for reducing or eliminating a quantization error caused by a quantizer of a continuous-time (CT) residue generation system are disclosed. In particular, systems and methods described herein are based on using a dither generation and injection circuit that can perform a high-pass filtering of the additive dither signal (i.e., a high-pass shaped dither signal). Using high-pass shaped dither signals is expected to improve quantizer linearity without significantly reducing the available error correction range. The applied dither may be particularly effective at minimizing signal-dependent distortion in ADC output spectrum caused by the quantizer when the quantization error cancellation accuracy may be insufficient. | 2022-02-10 |
20220045687 | CALIBRATION OF CONTINUOUS-TIME RESIDUE GENERATION SYSTEMS FOR ANALOG-TO-DIGITAL CONVERTERS - Calibration of continuous-time (CT) residue generation systems can account and compensate for mismatches in magnitude and phase that may be caused by fabrication processes, temperature, and voltage variations. In particular, calibration may be performed by providing one or more known test signals as an input to a CT residue generation system, analyzing the output of the system corresponding to the known input, and then adjusting one or more parameters of a forward and/or a feedforward path of the system so that the difference in transfer functions of these paths may be reduced/minimized. Calibrating CT residue generation systems using test signals may help decrease the magnitude of the residue signals generated by such systems, and, consequently, advantageously increase an error correction range of such systems or of further stages that may use the residue signals as input. | 2022-02-10 |
20220045688 | PRE-DRIVE MODULE OF ANALOG-TO-DIGITAL CONVERTER, AND ANALOG-TO-DIGITAL CONVERSION DEVICE - Disclosed are a pre-drive module of an analog-to-digital converter and an analog-to-digital conversion device. The pre-drive module includes a sampling capacitor; a controller configured to output a reset control signal, a pre-sampling control signal, and a sampling control signal according to a preset timing sequence; a reset module configured to reset the sampling capacitor upon receiving the reset control signal; a first auxiliary drive circuit configured to amplify an input analog signal and output to the sampling capacitor for sampling upon receiving the sample control signal; and a second auxiliary drive circuit. The controller is configured to output the pre-sampling control signal before outputting the sampling control signal, control the second auxiliary drive circuit to amplify the input analog signal, and output to the sampling capacitor for pre-sampling, and when a charging voltage of the sampling capacitor during pre-sampling reaches a preset voltage value, output the sampling control signal. | 2022-02-10 |
20220045689 | RESISTIVE SENSOR BASED DATA ACQUISITION SYSTEM USING LOW DISTORTION ANALOG FRONT-END AND DIGITAL GAIN ERROR CORRECTION - A data acquisition system (DAS) for processing an input signal from a resistive sensor (e.g., Hall effect sensor) includes a sensor signal path that digitizes the input signal. An input impedance of the sensor signal path attenuates the input signal. A gain error corrector applies a gain error correction factor in a digital domain of the DAS to the digitized input signal to compensate for a loading effect to the resistive sensor. The sensor signal path includes an inverting amplifier that provides low distortion for the input signal and an ADC (e.g., delta-sigma, SAR, pipelined, auxiliary) that digitizes the input signal. A sensor characterization path digitizes the sensor resistance which the gain error corrector uses, along with the inverting amplifier input impedance, to calculate the gain error correction factor. | 2022-02-10 |
20220045690 | AUDIO ADC FOR SUPPORTING VOICE WAKE-UP AND ELECTRONIC DEVICE - Disclosed are an audio ADC for supporting voice wake-up and an electronic device. The audio ADC includes a programmable gain amplifier (PGA) having an input terminal for receiving an audio signal; a bypass switch having an input terminal for receiving an analog audio signal; and a successive approximation ADC having input terminals respectively connected to output terminals of the PGA and the bypass switch; the PGA gains and amplifies the audio signal, the bypass switch bypasses the PGA, and outputs the analog audio signal; the successive approximation performs analog-to-digital conversion with noise shaping on the analog audio signal after gain amplification at a first sampling rate/oversampling rate when the audio ADC is normal working, and turns off noise shaping when the audio ADC is sleep, performs analog-to-digital conversion on the analog audio signal output by the bypass switch at a second sampling rate/oversampling rate, and outputs to a DSP. | 2022-02-10 |
20220045691 | SYSTEM AND METHOD TO COMPENSATE FOR FEEDBACK DELAYS IN DIGITAL CLASS-D MODULATORS - Systems and method for improving stability and performance in class-D modulators. In particular, a multi-cycle feedback network is positioned around a quantizer of a digital class-D amplifier. The multi-cycle feedback network allows the main class-D feedback loop to have multiple clock cycles of delay. | 2022-02-10 |
20220045692 | SYSTEM AND METHOD TO ENHANCE NOISE PERFORMANCE IN A DELTA SIGMA CONVERTER - Systems and methods for a power-efficient 3-level digital-to-analog converter. A converter cell using a current starving technique keeps a portion of the converter cell turned on in a low power mode, as opposed to completely turning off current in selected modes. A conversion system keeps a first set of converters active while allowing a second set of converters to be powered down. Systems and methods presented save power and allow for efficient reactivation of converters. | 2022-02-10 |
20220045693 | SYSTEM AND METHOD FOR DYNAMIC ELEMENT MATCHING FOR DELTA SIGMA CONVERTERS - Systems and methods for improving the efficiency of a rotational dynamic element matching (DEM) for Delta Sigma converters. In some implementations, the systems and methods are provided a for reducing intersymbol interference (ISI) of a Delta Sigma converter. A delta sigma converter architecture can include multiple I-DACs, and the output from each I-DAC can vary from the other I-DACs. Techniques are disclosed for decreasing mismatch among multiple I-DACs while improving efficiency of rotational dynamic element matching. | 2022-02-10 |
20220045694 | SYSTEM AND METHOD TO ENHANCE NOISE PERFORMANCE IN A DELTA SIGMA CONVERTER - Systems and methods for improving noise efficiency in a Delta Sigma modulator. A bypass scheme for a noise splitter is disclosed that reduces toggling activity for small signals. In particular, a sample-by-sample bypass noise splitter is disclosed that includes a noise splitting module and a bypass line. The bypass line bypasses the noise splitting module when signals are below a selected threshold, increasing efficiency of the system. | 2022-02-10 |
20220045695 | TRANSMITTER AND PARITY PERMUTATION METHOD THEREOF - A transmitter is provided. The transmitter includes: a Low Density Parity Check (LDPC) encoder configured to encode input bits to generate parity bits; a parity permutator configured to perform parity permutation by interleaving the parity bits and group-wise interleaving a plurality of bit groups including the interleaved parity bits; and a puncturer configured to select some of the parity bits in the group-wise interleaved bit groups, and puncture the selected parity bits, wherein the parity permutator group-wise interleaves the bit groups such that some of the bit groups are positioned at predetermined positions, respectively, and a remainder of the bit groups are positioned without an order within the group-wise interleaved bit groups so that the puncturer selects parity bits included in the some of the bit groups positioned at the predetermined positions sequentially and selects parity bits included in the remainder of the bit groups without an order. | 2022-02-10 |
20220045696 | METHODS AND SYSTEMS FOR BIT ERROR DETERMINATION AND CORRECTION - A computer-implemented technique for correcting a data packet having a payload and cyclic redundancy check information provides a list of possible packet errors by algorithmic operations of forcing and cancelling bits at certain positions using a generator polynomial, while maintaining the equivalence relationship with the original syndrome, performed explicitly using arithmetic operations or implicitly using a table representative of such arithmetic operations. Correction can then be implemented using an error chosen from the list. | 2022-02-10 |
20220045697 | TRANSMITTER AND METHOD FOR GENERATING ADDITIONAL PARITY THEREOF - A transmitter is provided. The transmitter includes: a Low Density Parity Check (LDPC) encoder configured to encode input bits to generate an LDPC codeword including the input bits and parity bits to be transmitted in a current frame; a parity permutator configured to perform parity-permutation by interleaving the parity bits and group-wise interleaving a plurality of bit groups configuring the interleaved parity bits based on a group-wise interleaving pattern including a first pattern and a second pattern; a puncturer configured to puncture some of the parity-permutated parity bits; and an additional parity generator configured to select at least some of the punctured parity bits to generate additional parity bits to be transmitted in a previous frame of the current frame, based on the first pattern and the second pattern, wherein the first pattern determines parity bits to remain after the puncturing and then to be transmitted in the current frame. | 2022-02-10 |
20220045698 | APPARATUS FOR TRANSMITTING DATA IN INTERLEAVE DIVISION MULTIPLE ACCESS (IDMA) SYSTEM - There is provided an apparatus including an acquisition unit that acquires an information block generated from transmission data for a user and subjected to error correction coding, and an interleaving unit that interleaves a bit sequence of the information block using an interleaver unique to the user. The interleaving unit interleaves the bit sequence by interleaving each of two or more partial sequences obtained from the bit sequence. | 2022-02-10 |
20220045699 | SIGNAL ANALYSIS METHOD AND SIGNAL ANALYSIS MODULE - A signal analysis method is described. The signal analysis method includes: receiving an input signal having unknown characteristic signal parameters; determining IQ data being associated with the input signal; determining at least one of the characteristic signal parameters based on the IQ data via an artificial intelligence circuit; and adapting at least one measurement parameter of a measurement instrument based on the at least one characteristic parameter by the artificial intelligence circuit. Moreover, a signal analysis circuit is described. | 2022-02-10 |
20220045700 | METHOD FOR PROVIDING MOBILE RADIO CONNECTIVITY IN A CONFINED SPACE BY MEANS OF AN EXTERNAL AERIAL AND ASSOCIATED SYSTEM - On the downlink, a mobile radio signal transmitted by a base station and a television signal may be received over the downlink by an external television aerial located on a building roof After reception, these signals may be transmitted via a wired communication link to a processing module located in a confined space in which the terminal is located. The mobile radio signal may be extracted, amplified and sent by the processing module so as to be received by the terminal. On the downlink, the terminal may transmit a mobile radio signal to a base station. Alternatively, the terminal may transmit a radiofrequency signal received by the processing module which amplifies it and transmits it to a base station, with or without frequency transposition, and with or without format conversion. | 2022-02-10 |
20220045701 | CURRENT MODE LOGIC DRIVER AND TRANSMISSION DRIVER INCLUDING THE SAME - A transmission driver includes a pulse generator and a current mode logic driver. The pulse generator is configured to generate and output a first pulse signal by synchronizing at a falling edge time point of a first input signal, and generate and output a second pulse signal by synchronizing at a falling edge time point of a second input signal. The current mode logic driver is configured to output a pre-emphasis signal to which pre-emphasis technique has been applied by changing a first load resistance value and a second load resistance value based on the first pulse signal and the second pulse signal, respectively. | 2022-02-10 |
20220045702 | DC DETECTOR FOR A TRANSMIT DATAPATH - A transmitter with a DC detection circuit that can control when a modulator of the transmitter is active. When data is being transmitted, a tone introduced by a mixer in the transmit path is hidden by the data signal and has minimal effect on the transmit path. However, when there is no data, the tone can cause undesirable noise. A modulator may move the tone or noise outside of the transmitter's bandwidth. As the data can hide the tone, the DSM may only be needed when there is a DC signal. By activating the DSM only when a DC signal is detected, the extra power introduced by the modulator can be reduced while eliminating in-band noise. | 2022-02-10 |
20220045703 | DIGITAL FINGERPRINT GENERATION CIRCUIT, GENERATION METHOD AND ELECTRONIC DEVICE - Embodiments of the present disclosure provide a circuit and a method for digital fingerprint generation, and an electronic device. The digital fingerprint generation method includes inputting an input signal from outside; generating a frequency relationship indication signal between an input signal and a feedback signal; generating a frequency control signal based on the frequency relationship indication signal; generating an intermediate signal based on a frequency control signal and pulse signals; dividing the intermediate signal in frequency to generate the feedback signal; and generating a digital fingerprint based on the input signal and the feedback signal. | 2022-02-10 |
20220045704 | ELECTRONIC DEVICE FOR REMOVING SELF-INTERFERENCE SIGNAL AND METHOD OF OPERATING THE SAME - A wireless communication device includes a transmission radio frequency (RF) chain configured to transmit a radio signal, and processing circuitry configured to cause the wireless communication device to detect that the transmission RF chain has transited from an inactive state to a first active state, determine whether to detect an updated value of a phase of a self-interference signal in response to detecting that the transmission RF chain has transited from the inactive state to the first active state, and modify a weight vector of an adaptive filter corresponding to the self-interference signal based on the updated value of the phase or a previous value of the phase. | 2022-02-10 |
20220045705 | ULTRA-LOW-POWER MILLIMETER-WAVE TO BASEBAND RECEIVER MODULE FOR SCALABLE MASSIVE MIMO - Aspects of the subject disclosure may include, for example, receiving, by a first radio module at a first location, a wireless MIMO signal, to obtain a first received RF signal. The wireless MIMO signal includes information originating at a remote MIMO transmitter and conveyed via a wireless channel. An envelope of the first received RF signal is detected by the first radio module without requiring a local oscillator, to obtain a first baseband signal. The first baseband signal may be filtered and/or amplified, after which it is compared to a reference value to obtain a first digital signal that is provided to a digital processor. The digital processor also obtains a second digital signal from a second radio module receiving the wireless MIMO signal at a second location and determines an estimate of the information originating at the remote MIMO transmitter according to the first and second digital signals. Other embodiments are disclosed. | 2022-02-10 |
20220045706 | SIGNAL MIXING CIRCUIT DEVICE AND RECEIVER - A signal mixing circuit device includes a first mixer, a second mixer and a signal amplifying circuit serially connected to the first mixer; the first mixer includes an RF signal input terminal for receiving an RF signal, LO signal input terminals for sampling a first and second LO signals, a first mixed-signal output terminal for outputting a first mixed signal and a second mixed-signal output terminal for outputting a second mixed signal; the second mixer includes an input terminal connected to a capacitor, two mixed-signal output terminals respectively connected to the first and second mixed-signal output terminals of the first mixer, LO signal input terminals for inversely sampling the first and second LO signals. With the double-balance nature of the second mixer core, the noise at the LO signal input terminals of the first mixer can be cancelled. A receiver includes the signal mixing circuit device is also disclosed. | 2022-02-10 |
20220045707 | VR GO CASE - The present concept relates to virtual reality and creating the ability for people to experience virtual reality “VR” content on their mobile devices in a much more fluid way than the options that are currently available. | 2022-02-10 |
20220045708 | MOBILE PHONE RING HOLDER - The present invention relates to the field of mobile phone holders, and particularly involves a mobile phone ring holder. When a mobile phone needs to be charged wirelessly, a shell can be removed, an insulating substrate can be left on the mobile phone side, and the insulating substrate will not hinder the wireless charging. After the charging is completed, the shell can be installed again. The thickness of the insulating substrate is made to be 0.8 mm, so that the mobile phone with a magnetic attraction charging function can be subjected to magnetic attraction charging for use, and the use of function of a vehicle-mounted magnetic attraction holder is supported by means of a magnetic attraction sheet. | 2022-02-10 |
20220045709 | RADIO TRANSCEIVER CONTROL INTERFACE - Radio transceiver control interfaces are provided herein. In certain embodiments, a semiconductor die includes a group of transmitters and a group of receivers that operate as a transceiver. Additionally, a group of common pins are used to control settings of both the transmitters and receivers. In one example, data received on the common pins can be used to establish enable settings for each of the transmitters and receivers. Thus, rather than using a one-to-one correspondence between a pin and the setting of a particular transmitter or receiver, a mapping is used between the common pins and the settings of the transmitters and receivers. | 2022-02-10 |
20220045710 | RADIO FREQUENCY DEVICE WITH INTEGRATED ANTENNA TUNER AND MULTIPLEXER - Radio frequency communication systems with a combined antenna impedance tuning and antenna multiplexing functionality are provided. In certain embodiments, a packaged radio frequency module includes an antenna multiplexer and an antenna impedance tuner. The module can be configured to provide impedance matching between one or more radio frequency front end modules and an antenna. The antenna impedance tuner can supplement antenna tuning provided by an antenna aperture separately connected to the antenna. | 2022-02-10 |
20220045711 | TIME DIVISION DUPLEXING RECEIVER WITH CONSTANT IMPEDANCE FOR A BROADBAND LINE TERMINAL WITH ASYNCHRONOUS TRANSMISSION - A line driver circuit having an amplifier circuit having a differential output, the differential output including a first output terminal and a second output terminal and an impedance switching circuit coupled between the first output terminal and the second output terminal of the amplifier circuit, wherein the impedance switching circuit is configured to reduce or maintain impedance across the first output terminal and the second output terminal of the amplifier circuit. | 2022-02-10 |
20220045712 | Radio-Frequency Front End Modules with Leakage Management Engines - An electronic device may include a transceiver, an antenna, and a front end module (FEM) coupled between the transceiver and antenna. Components on the FEM may operate on radio-frequency signals. The FEM may include a digital controller with a leakage management engine. The leakage management engine may monitor power supply voltages received by the FEM. In response to detection of a trigger condition, the leakage management engine may power off a set of the components while at least some of the FEM remains powered on. The trigger condition may be a change in the power supply voltages or a host command received from a host processor. Using the leakage management engine to power off the set of front end components may serve to minimize leakage current on the FEM, thereby maximizing battery life and shelf life for the device, without the use of bulky and expensive external load switches. | 2022-02-10 |
20220045713 | EQUALIZER ASSISTED POLYNOMIAL BASED LINEARITY ENHANCEMENT AND SELF-INTERFERENCE CANCELER - A cross-division duplex (XDD) system includes an apparatus having a transceiver configured to communicate via an uplink channel and a downlink channel concurrently. The apparatus also includes a transmit antenna, a receive antenna, and a processor. The processor is configured to: estimate a non-linear component corresponding to a transmit path in the transceiver; apply an equalizer function to a received signal; and subtract, in a self-interference cancel (SIC) circuitry, the estimated non-linear component from the equalized signal. | 2022-02-10 |
20220045714 | FULL-DUPLEX SELF-INTERFERENCE CANCELLATION METHOD AND APPARATUS - Embodiments of this application disclose a full-duplex self-interference cancellation method and apparatus. The full-duplex self-interference cancellation method may be applied to the field of radio frequency self-interference cancellation in a full-duplex scenario. The full-duplex self-interference cancellation method is implemented by a full-duplex self-interference cancellation apparatus with self-interference reconstruction modules of two levels, and the full-duplex self-interference cancellation apparatus is implemented by a terminal. This greatly reduces hardware implementation complexity and costs of the second self-interference reconstruction module, and improves a full-duplex self-interference cancellation capability. | 2022-02-10 |
20220045715 | Audio Synchronization of a Dumb Speaker and a Smart Speaker Using a Spread Code - Disclosed herein are system, apparatus, article of manufacture, method and/or computer program product embodiments, and/or combinations and sub-combinations thereof, for synchronizing playback of audiovisual content with a dumb speaker. In some embodiments, a display device transmits a spread spectrum signal to a dumb speaker over a data channel using a spread spectrum code. The display device then receives the spread spectrum signal from the dumb speaker over an audio data channel. The display device despreads the spread spectrum signal based on the spreading code. The display device determines a time of receipt of the spread spectrum signal. The display device calculates an audiovisual output path delay for the dumb speaker based on the time of receipt and a time of transmission. The display device then synchronizes the playback of the audiovisual content at the dumb speaker and a smart speaker based on the audiovisual output path delay. | 2022-02-10 |
20220045716 | HIGH-VOLTAGE PULSE GENERATOR AND COMMUNICATION METHOD THEREFOR - Disclosed are a high-voltage pulse generator and a communication method therefor. The high-voltage pulse generator comprises a master controller and a sub-controller. Data transmitted between the master controller and the sub-controller at least comprise a first class of data and a second class of data, and, the second class of data at least comprise two types. The communication method comprises the following steps: during the present instance of transmitting a first class of data, transmitting partial types of a second class of data; during the next instance of transmitting the first class of data, transmitting other types of second class of data; and repeatedly executing the step until the transmission of all types of second class of data is completed. The present application ensures an increased real time performance in the transmission of the first class of data; moreover, controller pin resources occupied are reduced, costs are reduced, and the problem of data conflict is avoided. | 2022-02-10 |