子分类：
| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 241 | Switching power amplifier and method for controlling the switching power amplifier | US14267929 | 2014-05-02 | US09876501B2 | 2018-01-23 | Yang-Chuan Chen; Hsiang-Hui Chang |
| A switching power amplifier includes: a first transistor controlled by a first digital signal to selectively output a first output signal; a second transistor controlled by a second digital signal to selectively output a second output signal; and a control circuit arranged to generate the second digital signal according to the first digital signal and a third digital signal; wherein the first output signal and the second output signal are outputted on a common connected node of the first transistor and the second transistor. | ||||||
| 242 | Peak frequency detection device, method, and program | US15314614 | 2014-07-10 | US09857399B2 | 2018-01-02 | Kazushi Akutsu |
| A peak frequency detection device provided with: an n multiplication unit that multiplies each element of a digital data string by n (n is an integer of 2 or more); an FFT unit that derives, as a virtual peak frequency, a frequency that corresponds to the maximum value of a power spectrum that is obtained by performing a fast Fourier transform of a digital data string of N (N is an integer of a power of 2 and is determined in accordance with a sampling frequency (fs), a sampling resolution (ftg), and a time window length (Ttg)) sample frequencies (fs) that are multiplied by n; and a 1/n multiplication unit that outputs the value of the virtual peak frequency multiplied by 1/n as the peak frequency of the digital data string. The peak frequency detection device satisfies n≧1/(ftg×Ttg), fs/(n×ftg)≦N≦fs×Ttg, and fs>2×n×fch. | ||||||
| 243 | System and Method for Multifunction Segmented Array Compensation for Oscillators | US15148398 | 2016-05-06 | US20170324376A1 | 2017-11-09 | John Esterline; Alan Snavely; Terry Hitt |
| The present disclosure provides for a system and method for compensating an electronic oscillator for one or more environmental parameters. A method may comprise segmenting test data received from an output signal of the oscillator and generating at least one correction voltage to thereby compensate the oscillator for one or more environmental parameters. A system may comprise at least one multi-function segmented array compensation module configured to receive one or more output signals from an oscillator and generate one or more correction voltages to thereby compensate the oscillator for environmental parameters. The system may also comprise one or more sensors and a user EFC. | ||||||
| 244 | MEASURING SYSTEM FOR OVER-THE-AIR POWER MEASUREMENTS WITH ACTIVE TRANSMISSION | US15474653 | 2017-03-30 | US20170244499A1 | 2017-08-24 | Markus GALLHAUSER; Werner PERNDL; Nino VOSS |
| A measuring system for performing over the air power measurements is provided. The measuring system comprises, within a single housing, a detector module, comprising a detector input, a transmitter module, comprising a transmitter output, and an antenna. The detector input and the transmitter output are at least temporarily connected. At least the transmitter output or the detector input are at least temporarily connected to the antenna. | ||||||
| 245 | Motor drive circuit and method | US14693050 | 2015-04-22 | US09722516B2 | 2017-08-01 | Takashi Ogawa |
| In accordance with an embodiment, a drive circuit is provided for driving for a motor wherein the drive circuit includes a first signal generator coupled to a second signal generator. A bias generator is connected to the second signal generator. In accordance with another embodiment, a method for driving a motor is provided that includes comparing a first signal at a first output of a Hall sensor with a second signal at a second output of the Hall sensor to generate a comparison signal. An indicator signal is generated in response to the comparison signal, wherein the indicator signal has a first edge and a second edge. A bias signal for the Hall sensor is generated in response to the indicator signal in response to the indicator signal. | ||||||
| 246 | PEAK FREQUENCY DETECTION DEVICE, METHOD, AND PROGRAM | US15314614 | 2014-07-10 | US20170205448A1 | 2017-07-20 | Kazushi AKUTSU |
| A peak frequency detection device provided with: an n multiplication unit that multiplies each element of a digital data string by n (n is an integer of 2 or more); an FFT unit that derives, as a virtual peak frequency, a frequency that corresponds to the maximum value of a power spectrum that is obtained by performing a fast Fourier transform of a digital data string of N (N is an integer of a power of 2 and is determined in accordance with a sampling frequency (fs), a sampling resolution (ftg), and a time window length (Ttg)) sample frequencies (fs) that are multiplied by n; and a 1/n multiplication unit that outputs the value of the virtual peak frequency multiplied by 1/n as the peak frequency of the digital data string. The peak frequency detection device satisfies n≧1/(ftg×Ttg), fs/(n×ftg)≦N≦fs×Ttg, and fs>2×n×fch. | ||||||
| 247 | System and method for correlative sampling and compression of quasi-periodic machine parameter sensor data in an industrial facility | US14205750 | 2014-03-12 | US09497569B2 | 2016-11-15 | James Girardeau |
| A sensor sampling system comprises a base station and a field unit. The field unit receives a quasi-periodic signal representing machine parameters monitored by a machine sensor, and samples a first portion of the quasi-periodic signal to generate a first reference waveform. The field unit subsequently samples a second portion of the quasi-periodic signal to generate a first sample waveform. Finally, the field unit generates a first delta data set representing a difference between the first reference waveform and the first sample waveform and wirelessly transmits a representation of the first delta data set for reception by the base station. | ||||||
| 248 | AC ROTATING MACHINE CONTROL DEVICE AND ELECTRIC POWER STEERING DEVICE EQUIPPED WITH SAME | US15109525 | 2014-04-29 | US20160329849A1 | 2016-11-10 | Shunsuke NAKAJIMA; Yuya TSUCHIMOTO; Isao KEZOBO; Yoshihiko KIMPARA |
| This AC rotating machine control device includes: power limiting means 6 for limiting drive power supplied for driving the AC rotating machine; and power feed means 10 for, when sensor abnormality determination means 3 determines that the rotational position sensor is abnormal, on the basis of the estimated rotational position, supplying the AC rotating machine with power obtained by adding rotational position estimation power supplied for the rotational position estimation means 9 to estimate the rotational position, to the drive power limited by the power limiting means, wherein the power limiting means 6 limits drive current at least during a predetermined period since the sensor abnormality determination means 3 determines that the abnormality occurs until estimated error of the estimated rotational position falls within a predetermined range. | ||||||
| 249 | Apparatus For Use In Disturbance Evaluation Systems Based On Disturbance Extraction From An Electrical Network | US15032438 | 2014-11-18 | US20160274175A1 | 2016-09-22 | John Douglas Outram |
| Apparatus (1) for use in disturbance evaluation systems based on disturbance extraction, which apparatus (1) comprises measuring means for obtaining signal frequency both before (4) and after a disturbance (3) in an electricity network but excluding use of the disturbance transient itself, and interpolation means (5) for interpolating frequency across the disturbance interval to reflect the underlying frequency trend (9) uninfluenced by the disturbance transient. The apparatus (1) may include: (i) at least one delay means (2) for receiving at least one analogue or digital signal (6) from the electricity network; (ii) at least one first access point (P) at a first part of the delay means (2); (iii) at least one second access point (Q) at a second part of the delay means (2), and the apparatus (1) being such that: (iv) the measuring means comprises: (a) a first frequency derivation means (3) for processing a set of access point outputs from the first access point and providing at least one measure of frequency (7) after the disturbance; and (b) a second frequency derivation means (4) for processing a set of access point outputs from the second access point or a delayed output means, for providing at least one measure of frequency (8) before the disturbance; and the interpolation means (5) receives the measure of frequency (7) after the disturbance and the measure of frequency (8) before the disturbance, and provides a measure of frequency (9) as a function of time over a period of interest, which comprises the disturbance interval and either side of the disturbance interval. | ||||||
| 250 | Method and system for characterising a frequency translating device | US14382203 | 2013-02-28 | US09413404B2 | 2016-08-09 | Marc Vanden Bossche |
| The present invention relates to a method for characterizing at a given frequency reflected waves of a frequency translating device having at least two ports, whereby information is available on the phase of a local oscillator driving the frequency translating device. The method comprises the steps of—applying at the at least two ports at least a tone at said given frequency and tones at said given frequency offset by the local oscillator signal frequency,—rotating the phase of the applied tone at said given frequency or exploiting a phase rotation of the local oscillator signal,—measuring at said given frequency amplitude and phase of reflected waves at the at least two ports and measuring at said given frequency and at said given frequency offset by the frequency of the local oscillator signal amplitude and phase of incident waves at the at least two ports,—determining parameters for a model of the frequency translating device by relating the amplitude and phase of the reflected waves to the incident waves, taking into account at least the local oscillator signal phase. | ||||||
| 251 | ABNORMAL CLOCK RATE DETECTION IN IMAGING SENSOR ARRAYS | US14961829 | 2015-12-07 | US20160224055A1 | 2016-08-04 | Brian Simolon; Eric A. Kurth; Jim Goodland; Mark Nussmeier; Nicholas Hogasten; Theodore R. Hoelter; Katrin Strandemar; Pierre Boulanger; Barbara Sharp; Naseem Y. Aziz |
| Various techniques are provided to detect abnormal clock rates in devices such as imaging sensor devices (e.g., infrared and/or visible light imaging devices). In one example, a device may include a clock rate detection circuit that may be readily integrated as part of the device to provide effective detection of an abnormal clock rate. The device may include a ramp generator, a counter, and/or other components which may already be implemented as part of the device. The ramp generator may generate a ramp signal independent of a clock signal provided to the device, while the counter may increment or decrement a count value in response to the clock signal. The device may include a comparator adapted to select a current count value of the counter when the ramp signal reaches a reference signal. A processor of the device may be adapted to determine whether the clock signal is operating in an acceptable frequency range, based on the selected count value. | ||||||
| 252 | DEVICE FOR DETECTING A SPIKE IN ONE OF A PLURALITY OF NEURAL SIGNALS | US14917932 | 2014-09-09 | US20160213268A1 | 2016-07-28 | Seong-Jin KIM; Minkyu JE |
| A method for determining an occurrence of a spike in one of a plurality of neural signals is provided, the spike relating to an action potential in the one of the plurality of neural signals. The method includes sampling the plurality of neural signals at a sampling frequency; extracting frequency features from each of the plurality of neural signals during sampling of the plurality of neural signals; and monitoring the extracted frequency features to determine characteristics of the one of the plurality of neural signals indicative of an occurrence of a spike. | ||||||
| 253 | METHOD AND SYSTEM FOR DETERMINING AN OFFSET BETWEEN A DETECTOR AND A POINT ON A MOTOR | US14736439 | 2015-06-11 | US20150365027A1 | 2015-12-17 | Jürgen FISCHER |
| The present disclosure relates to a method of determining an offset between a detector and a point on a motor, the movement of the point on the motor being impeded in at least one direction. In particular, this disclosure relates to a method of determining a commutation offset for an encoder that works in conjunction with a synchronous motor. The commutation offset is an offset between the detector and the north pole of a permanent magnet within the motor. The method comprises setting a test value for the offset, causing a displacement of the detector based on the test value and measuring that displacement. The method further comprises repeatedly increasing the test value, and causing and measuring a displacement for each so increased test value until it is determined that the test value has crossed a threshold. | ||||||
| 254 | Abnormal clock rate detection in imaging sensor arrays | US14106666 | 2013-12-13 | US09207708B2 | 2015-12-08 | Brian Simolon; Eric A. Kurth; Jim Goodland; Mark Nussmeier; Nicholas Högasten; Theodore R. Hoelter; Katrin Strandemar; Pierre Boulanger; Barbara Sharp |
| Various techniques are provided to detect abnormal clock rates in devices such as imaging sensor devices (e.g., infrared and/or visible light imaging devices). In one example, a device may include a clock rate detection circuit that may be readily integrated as part of the device to provide effective detection of an abnormal clock rate. The device may include a ramp generator, a counter, and/or other components which may already be implemented as part of the device. The ramp generator may generate a ramp signal independent of a clock signal provided to the device, while the counter may increment or decrement a count value in response to the clock signal. The device may include a comparator adapted to select the current count value of the counter when the ramp signal reaches a reference signal. A processor of the device may be adapted to determine whether the clock signal is operating in an acceptable frequency range, based on the selected count value. | ||||||
| 255 | Signal converting device and digital transmitting apparatus applying the signal converting device | US14271470 | 2014-05-07 | US09191004B2 | 2015-11-17 | Yang-Chuan Chen |
| A signal converting device includes: a first converting circuit arranged to receive a first inputting signal; and a first capacitive circuit coupled between an output terminal of the first converting circuit and a reference voltage; wherein the first converting circuit is arranged to generate a first converting signal on the output terminal of the first converting circuit according to the first inputting signal. | ||||||
| 256 | SYSTEM AND METHOD FOR TUNING TRANSFORMERS | US14675541 | 2015-03-31 | US20150279553A1 | 2015-10-01 | Josue Kure; Timothy Gomez; Patrick Arvin |
| A system and method for tuning a transformer is provided. A transformer fixture may connect a switching network to a plurality of inductors of a transformer. At least one computing device may calculate a target number of turns for a primary coil and a secondary coil of the transformer based on a frequency response of the transformer. The switching network may connect the inductors of the transformer together in a pattern that results in the primary coil and secondary coil having the target number of turns. | ||||||
| 257 | Method For Detecting A Fault Condition In An Electrical Machine | US14440271 | 2013-10-03 | US20150276823A1 | 2015-10-01 | Pedro Rodriguez; Cajetan Pinto; Maciej Orman; Michal Orkisz; Ulf Ahrend; Rolf Disselnkötter; Pawel Rzeszucinski; James Ottewill |
| A method for identifying a fault condition in an electrical machine in which at least a stator or a rotor has parallel winding branches is disclosed. A measurement is carried out for obtaining a set of circulating current values between two parallel winding branches of which each winding branch includes a single coil. A frequency analysis is applied on the set of circulating current values to obtain at least one frequency component. A fault condition of the electrical machine is determined on the basis of the at least one frequency component. | ||||||
| 258 | DRIVING CIRCUIT FOR VOICE COIL MOTOR, LENS MODULE AND ELECTRONIC DEVICE USING THE SAME, AND DRIVING METHOD FOR VOICE COIL MOTOR | US14604005 | 2015-01-23 | US20150256731A1 | 2015-09-10 | Tatsuya NINOMIYA |
| A driving circuit for controlling a driving current is provided. A D/A converter has a precision of N bits and outputs a control signal for a driving current to a current driver. A logic unit receives input control data of M bits (M>N) and outputs intermediate control data of N bits to the D/A converter. A data extraction unit divides the input control data into a first data having N bits from the MSB and a second data having (M−N) bits from the LSB. A counter accumulatively adds the second data to generate a count. A carry detection unit asserts a carry signal when a carry at the MSB of the count is generated by the counter. An output control unit 66 converts the intermediate control data into the first data or a third data, in which 1 LSB is added to the first data, according to the carry signal. | ||||||
| 259 | Transmitter system with digital phase rotator used for applying digital phase rotation to constellation data and related signal transmission method thereof | US14280683 | 2014-05-19 | US09094004B2 | 2015-07-28 | Ming-Yu Hsieh; Chi-Hsueh Wang; Pou-Chi Chang |
| A transmitter system includes a digital phase rotator, a phase rotation controller, and a digital radio-frequency (RF) transmitter. The digital phase rotator receives a first constellation data, and applies a digital phase rotation to the received first constellation data to generate a second constellation data. The phase rotation controller configures the digital phase rotation. The digital RF transmitter receives a digital input data derived from the second constellation data, and converts the digital input data into an analog RF output. | ||||||
| 260 | Radio-frequency ion channel antenna | US13786880 | 2013-03-06 | US09086401B2 | 2015-07-21 | Robert H. Blick; Abhishek Bhat |
| An antenna is used for radio frequency measurements of cell wall impedance changes due to ion channels. The antenna provides enhanced direct readout of lipid bilayers and cells containing pores and ion channels. The antenna is placed around a nanopore, which may be fabricated from glass, quartz or other material, and is shaped to provide an enhanced sensitivity to electrical activity in the vicinity of the nanopore. As such, the antenna may be of a class of bi-cone- or other stub-antennas providing high gain and broad bandwidth, for example a planar variant of a “bow-tie” antenna. Accordingly, improved sensitivity of at least an order of magnitude may be achieved over past systems. | ||||||
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