Patents Examined by Joseph Chang
-
Patent number: 10330474Abstract: MEMS gyroscopes are often integrated in modern electronic products for measuring orientation or rotation in those products. However, these MEMS gyroscopes are often inaccurate. The invention provides a compensation circuit to compensate for errors causing a distortion of a measured Coriolis force. The compensation circuit demodulates an input signal provided by the MEMS gyroscope to produce a quadrature signal indicative of the quadrature error and provides a compensation signal to the MEMS gyroscope for actively compensating the quadrature error.Type: GrantFiled: January 23, 2017Date of Patent: June 25, 2019Assignee: NXP USA, Inc.Inventors: Hugues Beaulaton, Philippe Patrick Calmettes, Thierry Dominique Yves Cassagnes
-
Patent number: 10333536Abstract: An atomic oscillator includes: an atomic cell in which an alkali metal is sealed; a light-emitting element that emits light to be radiated to the atomic cell; a light-receiving element that detects the light transmitted through the atomic cell; a first optical element that has light transmittance and is disposed between the atomic cell and the light-emitting element; and a second optical element that has light transmittance and is disposed between the first optical element and the atomic cell. The first optical element reflects the light from the light-emitting element toward the light-emitting element in a first direction inclined with respect to an optical axis of the light. The second optical element reflects the light from the light-emitting element toward the light-emitting element in a second direction inclined in a direction different from the first direction with respect to the optical axis of the light.Type: GrantFiled: September 5, 2017Date of Patent: June 25, 2019Assignee: Seiko Epson CorporationInventors: Yoshiyuki Maki, Koji Chindo
-
Patent number: 10326313Abstract: A wireless power transmitter includes a converter configured to output an alternating current (AC) voltage in response to a transmission control signal; a power transmitter including a power transmitting coil and configured to vary an impedance in response to a resonance control signal, and to receive the AC voltage to wirelessly transmit power; and a controller configured to determine whether a wireless power receiver is present while varying the transmission control signal and the resonance control signal.Type: GrantFiled: January 17, 2017Date of Patent: June 18, 2019Assignee: Samsung Electro-Mechanics Co., Ltd.Inventors: Sang Hyun Min, Jung Tae Kim, Jung Hyun Kim
-
Patent number: 10305488Abstract: A circuit device includes an oscillation signal generation circuit that generates an oscillation signal having an oscillation frequency set by the frequency control data by using a resonator, and a processor that is configured to perform a signal process on input frequency control data to output frequency control data. The processor is configured to obtain a pre-estimated value x^?(k) at a time step k by adding a post-estimated value x^(k?1) and a correction value D(k?1) at a time step k?1 together during a process of updating a pre-estimated value in a Kalman filter process, and perform aging correction on the frequency control data on the basis of a result of the Kalman filter process.Type: GrantFiled: December 20, 2016Date of Patent: May 28, 2019Assignee: SEIKO EPSON CORPORATIONInventor: Takemi Yonezawa
-
Patent number: 10305489Abstract: A circuit device includes an oscillation signal generation circuit that generates an oscillation signal having an oscillation frequency, the oscillation frequency being a frequency set by using frequency control data, and a processor that is configured to perform a signal process on input frequency control data, and. The processor is configured to acquire the frequency control data from which an environmental change component is removed of the environmental change component and an aging change component by using environmental change component information, and perform aging correction on the basis of the frequency control data from which the environmental change component is removed.Type: GrantFiled: December 20, 2016Date of Patent: May 28, 2019Assignee: SEIKO EPSON CORPORATIONInventor: Takemi Yonezawa
-
Patent number: 10302595Abstract: A micro-electrical-mechanical system (MEMS) resonator device includes a top side electrode overlaid with a low water permeability hermeticity layer and an interface layer including a material (e.g., gold or a hydroxylated oxide surface) suitable for receiving a self-assembled monolayer (SAM) that may be functionalized with a functionalization (e.g., specific binding) material, with the foregoing layers being designed to have insubstantial impact on sensor performance. Atomic layer deposition may be used for deposition of the hermeticity and/or interface layers. The hermeticity layer protects the electrode material from attack in corrosive liquid environments, and the interface layer facilitates proper chemical binding of the SAM. Sensors and microfluidic devices incorporating MEMS resonator devices are also provided.Type: GrantFiled: October 26, 2016Date of Patent: May 28, 2019Assignee: QORVO US, INC.Inventors: John Belsick, Rick Morton, Matthew Ryder
-
Patent number: 10298408Abstract: Power and data are transmitted via a transformer including primary side and secondary side. A primary side signal is generated by coupling a first oscillator signal modulated with a data signal with a second oscillator signal that is selectively switched on and off. At the secondary side a secondary signal is generated. A demodulator demodulates the secondary signal to recover the data signal. A rectifier processes the secondary signal to recover a power supply signal controlled by switching on and off the second oscillator.Type: GrantFiled: April 26, 2016Date of Patent: May 21, 2019Assignee: STMicroelectronics S.r.l.Inventors: Egidio Ragonese, Nunzio Greco, Giuseppe Palmisano
-
Patent number: 10298175Abstract: A circuit device includes an oscillation signal generation circuit that generates an oscillation signal having an oscillation frequency using a resonator, the oscillation frequency being a frequency set by using frequency control data, and a processor configured to perform a signal process on input frequency control data based on a phase comparison result between an input signal based on the oscillation signal and a reference signal. The processor is configured to estimate a true value for an observed value of the frequency control data based on the phase comparison result through a Kalman filter process in a period before a hold-over state is detected, and generate aging-corrected frequency control data, in a case where the hold-over state is detected, by holding the true value at a timing corresponding to a timing of detecting the hold-over state, and by performing a calculation based on the true value.Type: GrantFiled: December 20, 2016Date of Patent: May 21, 2019Assignee: SEIKO EPSON CORPORATIONInventor: Takemi Yonezawa
-
Patent number: 10298210Abstract: An apparatus and method for a temperature and calibration utilizing resonant frequency peaks in an oscillator. A circuit providing resonant peaks for utilization for temperature measurements comprising a resonator device for providing an oscillating source, a variable gain-bandwidth amplifier in parallel with the crystal/resonator for providing modulation of the gain and/or bandwidth driving the crystal/resonator, and control of resonant peaks for selection for oscillation, a first capacitor electrically coupled to the parallel combination of the input of the variable gain-bandwidth amplifier, and the resonator device for providing charge storage for oscillation, and a second capacitor electrically coupled to parallel combination of the output of the variable gain-bandwidth amplifier, and the resonator device for providing charge storage for oscillation.Type: GrantFiled: December 11, 2017Date of Patent: May 21, 2019Assignee: Dialog Semiconductor (UK) LimitedInventor: Adam Malpass
-
Patent number: 10291081Abstract: A wireless power system and methods for operating the same are provided for protection of a wireless power receiver during wireless power transfer. A signal strength limit for the wireless power transmitter is determined based upon a receiver limit, a sensitivity of the wireless power receiver and a scaling factor of the wireless power transmitter.Type: GrantFiled: November 28, 2016Date of Patent: May 14, 2019Assignee: MediaTek Inc.Inventor: Vladimir A. Muratov
-
Patent number: 10291234Abstract: A circuit device includes a processor adapted to perform a signal processing of temperature compensation of an oscillation frequency based on temperature detection data from an external temperature sensor disposed outside the circuit device to output frequency control data, and an oscillation signal generation circuit adapted to generate an oscillation signal with the oscillation frequency corresponding to the frequency control data using the frequency control data and a resonator disposed in a thermostatic oven.Type: GrantFiled: December 21, 2016Date of Patent: May 14, 2019Assignee: SEIKO EPSON CORPORATIONInventor: Takemi Yonezawa
-
Patent number: 10284154Abstract: A system for generating a radio frequency (RF) signal at a drive frequency and a high voltage. The system includes a RF amplifier to amplify the voltage of a drive signal having a selected RF frequency. The amplified drive signal is used to drive a resonator to generate the RF signal such that the resonant frequency is the same or substantially the same as the drive frequency. A resonance tuning controller compares the drive frequency and the resonant frequency. If the resonant frequency and drive frequency are different, a temperature changing element is controlled to either increase heat or decrease heat radiating toward a tuning component with a resonance parameter that varies with temperature. For example, the heat may change the capacitance of the tuning capacitor causing a change in the resonant frequency of the resonator.Type: GrantFiled: December 8, 2017Date of Patent: May 7, 2019Assignee: Agilent Technologies, Inc.Inventor: Michael Schoessow
-
Patent number: 10284207Abstract: Methods and systems are provided for adaptively configuring voltage-controlled oscillator (VCO) arrays, such as to reduce mismatches among the VCOs. A plurality of voltage-controlled oscillators (VCOs), connected in parallel to a common control input, and with each VCO outputting an oscillating signal based on the common control input and an adjustment input, may be configured to reduce mismatches among the VCOs. The plurality of VCO may be configured by adjusting at least one operational parameter applicable to interconnection paths connecting outputs of the plurality of VCOs; measuring a mismatch between signals at the outputs of the plurality of VCOs with respect to a first signal parameter; and adjusting a first operational parameter applicable to one or more of the plurality of VCOs to reduce mismatch between signals at the outputs of the plurality of VCOs with respect to a first signal parameter.Type: GrantFiled: November 14, 2017Date of Patent: May 7, 2019Assignee: MAXLINEAR ASIA SINGAPORE PTE LTD.Inventors: Mark Hiebert, Srinivasa Rao Madala, Hormoz Djahanshahi
-
Patent number: 10277074Abstract: A wireless power transmitter includes a common bridge circuit configured to apply a first alternating current (AC) voltage to a terminal of each of a first resonator and a second resonator of the resonators, a first sub-bridge circuit configured to apply a second alternating current (AC) voltage to another terminal of the first resonator while the first alternating current (AC) voltage is being applied to the terminal of the first resonator, and a second sub-bridge circuit configured to apply a third alternating current (AC) voltage to another terminal of the second resonator while the first alternating current (AC) voltage is being applied to the terminal of the first resonator.Type: GrantFiled: December 29, 2016Date of Patent: April 30, 2019Assignee: Samsung Electro-Mechanics Co., Ltd.Inventors: Se Joo Kim, Sang Ho Cho, Hyo Young Kim, In Wha Jeong, Ki Hong Kim, Young Woon Choi
-
Patent number: 10277280Abstract: Some embodiments disclosed herein provide a method for configuring wireless power and data transfer between consumer electronic (CE) devices. The method comprises identifying a plurality of antenna systems including at least a first antenna system and a second antenna system. At least the first antenna system is cooperated with a first CE device and the second antenna system is cooperated with a separate second CE device. Each of the plurality of antenna systems comprises a power transfer antenna and one or more communications antennas. The system provides a graphical user interface to illustrate each of the identified antenna systems, and receives user instructions corresponding to at least two of the identified antenna systems, to generate configuration instructions in accordance with the user instructions, and to configure selected CE devices in accordance with the configuration instructions.Type: GrantFiled: November 9, 2016Date of Patent: April 30, 2019Assignee: Sony Interactive Entertainment LLCInventors: James Richard Milne, True Xiong, Charles McCoy
-
Patent number: 10263475Abstract: Methods and systems for a complementary metal oxide semiconductor wireless power receiver may include a receiver chip with an inductor, a configurable capacitance, and a rectifier. The method may include receiving an RF signal utilizing the inductor, extracting a clock signal from the received RF signal, generating a DC voltage utilizing a rectifier circuit, sampling the DC voltage, and adjusting the configurable capacitance based on the sampled DC voltage. The rectifier circuit may include CMOS transistors and T-gate switches for coupling to the inductor. The T-gate switches may be controlled by the generated DC voltage. A signed based gradient-descent algorithm may be utilized to maximize the DC voltage. The DC voltage may be sampled utilizing a comparator powered by the DC voltage, which may adaptively configure the capacitance. The inductor may be shielded utilizing a floating shield. The DC voltage may be increased utilizing a voltage-boosting rectifier.Type: GrantFiled: June 20, 2017Date of Patent: April 16, 2019Inventors: Meysam Zargham, Glenn Gulak
-
Patent number: 10250266Abstract: An oscillator system for an integrated circuit includes a first oscillator circuit, a second oscillator circuit, and calibration system. During a sampling routine, the calibration system is used to determine a sampled value based on a comparison of the output of the second oscillator and an external clock signal. The sampled value is stored in a memory. During a calibration routine, the calibration system determines a comparison value based on a comparison of the output of the second oscillator circuit and the output of the first oscillator circuit. The calibration circuit compares the comparison value with the sampled value to generate a tuning value to tune the frequency of the first oscillator circuit.Type: GrantFiled: July 24, 2017Date of Patent: April 2, 2019Assignee: NXP B.V.Inventors: Anne-Johan Annema, Jos Verlinden
-
Patent number: 10250269Abstract: An oscillator system includes a voltage controlled oscillator (VCO) circuit. The VCO circuit includes an output for providing an oscillation signal and input to receive a voltage that controls the frequency of the oscillation signal. The oscillator system includes a frequency to voltage circuit that receives the oscillation signal and produces a voltage that is dependent upon the frequency of the oscillation signal. The oscillator system includes a comparison circuit including an amplifier. The amplifier includes an inverting input, a non inverting input, and an output. During a first phase of the comparison circuit, the non inverting input receives a reference voltage and the inverting input is coupled to the output of the amplifier via a switch and to a capacitor wherein the capacitor samples the voltage of the output.Type: GrantFiled: July 24, 2017Date of Patent: April 2, 2019Assignee: NXP B.V.Inventors: Jos Verlinden, Sander Derksen, Dobson Paul Parlindungan Simanjuntak, Remco Cornelis Herman Van de Beek
-
Patent number: 10243400Abstract: Embodiments provide a wireless power transfer technology, and more particularly, provide a wireless power transmitter, which may improve wireless power transfer efficiency, thereby achieving increased performance. The wireless power transmitter includes a Printed Circuit Board (PCB), a first transmission coil attached to a first surface of the PCB, a second transmission coil and a third transmission coil, each attached to a second surface of the PCB so as to overlap the first transmission coil, and a control circuit board for controlling wireless power transfer through the first to third transmission coils.Type: GrantFiled: December 2, 2016Date of Patent: March 26, 2019Assignee: LG INNOTEK CO., LTD.Inventor: Yu Ri Park
-
Patent number: 10243395Abstract: A control method for a system having an inverter with a direct current (DC) connection includes a DC source and an additional DC source or DC sink connected in parallel to the DC connection. An actuator configured to adjust at least one of voltage at the DC source, current supplied by the DC source, and output supplied by the DC source, or the voltage at the DC sink, current drawn by the DC sink, and the output drawn by the DC sink adjusts at least one parameter of the system relating to at least one of voltage, current, and output at the DC source, the DC sink, and/or the DC connection such that voltage at the DC connection, current flowing through the DC connection, output supplied through the DC connection to the inverter, or output supplied through the DC connection from the inverter, corresponds to a predetermined value.Type: GrantFiled: April 1, 2015Date of Patent: March 26, 2019Assignee: AmbiBox GmbHInventors: Kai Fieber, Manfred Przybilla, Sascha Lehrmann