| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 324602000 | With auxiliary means to condition stimulus/response signals | 72 |
| 20080224714 | System and Method of Integrated Circuit Control for in Situ Impedance Measurement - A system and method of integrated circuit control for in situ impedance measurement including a system with a plurality of functional partitions in a clocked logic type integrated circuit, the functional partitions having a communication controller and a modulation gate, the modulation gate receiving a clock signal and a modulation signal and generating a modulated clock signal for the functional partition; at least one of the communication controllers receiving an in-band signal and selectively communicating the in-band signal to the other communication controllers; and at least one of the functional partitions having a modulator, the modulator receiving the clock signal and a modulation control signal and generating the modulation signal. | 09-18-2008 |
| 20120013351 | METHOD FOR CONVERTING A SENSOR CAPACITANCE UNDER PARASITIC CAPACITANCE CONDITIONS AND A CAPACITANCE-TO-VOLTAGE CONVERTER CIRCUIT - A method for converting a sensor capacitance under parasitic capacitance conditions and a capacitance-to-voltage (CV) converter circuit for converting a sensor capacitance under parasitic capacitance conditions are provided. The method comprises the step of using a two stage operational amplifier (op-amp) in non-unity-gain configuration, wherein the two stage op-amp is chosen to be unstable in unity-gain configuration for reducing power consumption. | 01-19-2012 |
| 20120286799 | TEST FIXTURE FOR RF TESTING - A test fixture for performing RF testing. The test fixture includes a base plate configured to support an electronic device. The base plate defines a grid of grooves. The base plate further defines a cut-out configured to receiving an antenna in one or more positions. The test fixture further includes markers indicating positioning of the electronic device on the base plate. | 11-15-2012 |
| 20140055147 | Testing Systems with Automated Loading Equipment and Positioners - A test system may be provided in which devices under test are tested using radio-frequency test stations. A test station may include a test host, a test unit coupled to the test host, and a shielded enclosure. The shielded enclosure may contain a test antenna coupled to the test unit via a radio-frequency cable. A computer-controlled loading arm may be used to place a device under test on a positioner within the test enclosure. The test enclosure may have an enclosure door that is opened and closed using a computer-controlled pneumatic cylinder. When the enclosure door is closed, a portion of the enclosure door may actuate one or more levers on the positioner, which may in turn actuate one or more positioning arms to press the device under test against one or more guide surfaces on the positioner, thereby precisely positioning the device under test within the test enclosure. | 02-27-2014 |
| 20140091811 | SYSTEMS AND METHODS FOR MONITORING SENSORS - A method for multivariable measurements using a single-chip impedance analyzer includes providing a sensor, exposing the sensor to an environmental parameter, determining a complex impedance of the sensor over a measured spectral frequency range of the sensor, and monitoring at least three spectral parameters of the sensor. | 04-03-2014 |
| 20140184241 | ELECTROMAGNETIC COMPATIBILITY TESTING SYSTEM - An electromagnetic compatibility testing system includes an anechoic chamber. The anechoic chamber includes a testing table, an antenna, an amplifier, and a receiver. A test sample is placed on the testing table. The antenna receives electromagnetic signals emitted by the test sample and transmits the electromagnetic signals to the amplifier via a coaxial cable. The receiver is connected to the amplifier via the coaxial cable analyzing the electromagnetic signals amplified by the amplifier. | 07-03-2014 |
| 20140239976 | AUXILIARY TEST APPARATUS FOR ELECTROMAGNETIC COMPATIBILITY AND TEST METHOD USING THE SAME - An auxiliary test apparatus for electromagnetic compatibility includes two substantially parallel side plates and a dividing plate substantially perpendicularly connected between centerlines of the side plates. A through hole is defined in a center portion of the dividing plate. Top and bottom surfaces of the dividing plate and the inner surfaces of the side plates are covered by conductive foam. | 08-28-2014 |
| 20140368216 | Measurement and System for Performing a Calibration - The present invention relates to a method for calibrating a receiver device or a stimulus-response system comprising a receiver device. The method comprises the steps of
| 12-18-2014 |
| 20140375334 | SYSTEMS AND METHODS FOR SELECTING CIRCUIT ELEMENT VALUES FOR A HYBRID ACTIVE POWER FILTER OPERATING OVER A VARIABLE FREQUENCY - Embodiments relate to systems and methods for selecting circuit element values for a hybrid active power filter operating over a variable frequency. In aspects, a hybrid active power filter (HAPF) circuit can eliminate current harmonics present in an AC power source which are caused by an AC load network.—In implementations, the AC voltage source—may be a source having a variable frequency range, for instance 360-800 Hz. Since the source voltage can encompass a significant frequency range, a simple determination of the correct or desirable values of capacitive and inductive elements in the filtering section of the HAPF may not be possible. According to aspects, analytic techniques are provided which allow the values of those circuit elements to be derived from impedance and other circuit values to provide satisfactory suppression of identified harmonics, which can include the 5 | 12-25-2014 |
| 20150035543 | Method for Detecting Fast Time Constant Targets Using a Metal Detector - A method for reducing a delay, between a transition of a transmission of a metal detector and a process of a receive signal received by a receive coil of the metal detector, due to a critically damped time constant of the receive coil, including: introducing a negative capacitance into the receive coil to reduce the critically damped time constant. | 02-05-2015 |
| 20150035544 | Apparatus for Sensor with Configurable Damping and Associated Methods - A sensor includes a coil suspended in a magnetic field, an optical detector to detect displacement of the coil in response to a stimulus, and a feedback circuit coupled to the optical detector and to the coil to drive the coil. The sensor also includes a damping circuit coupled in parallel with the coil. | 02-05-2015 |
| 20150355109 | EDGE TREATMENT SYSTEM AND METHOD FOR EVALUATING A MATERIAL - Disclosed is an improved system and method to treat an edge of a material for determining a property of such material through measurements of electromagnetic waves. The system and method are operative to mitigate the adverse effects caused by the interaction between an electromagnetic wave and an edge of a sample of a material under test. The system and method define a configuration to block and significantly attenuate the propagation of electromagnetic waves that may reach an edge of the sample being evaluated. This configuration reduces the undesired effects caused by edge-diffraction that may interfere with the measurement of desired electromagnetic waves for material evaluation. As a result, a property of a material under test can be measured more accurately, especially near the edges of such material. In addition, the system and method enable the evaluation of a small-size sample of a material. | 12-10-2015 |
| 20160146863 | DISAGGREGATION APPARATUS FOR BEING USED IN A MULTI-GROUP ELECTRICAL NETWORK - The invention relates to a disaggregation apparatus ( | 05-26-2016 |
| 324603000 | For excitation | 22 |
| 20080224715 | LIGHT-DRIVING SYSTEM CAPABLE OF PROVIDING SIGNAL-MEASURED CALIBRATION AND A METHOD FOR PERFORMING THE SAME - This present invention discloses a light-driving system capable of providing an accurate calibration of signal measurement and a method for performing the same, including an automatic power control (APC) circuit which is pre-calibrated for a signal measurement process. By enlarging at least one measured pad of the APC circuit, multiple grounding paths are established via a plurality of probes of a test instrument. An impedance effect predicted on the contact between the probes and the pad is diminished greatly. A voltage value on the pad can be accurately measured. Thus, a reference voltage value input to a first input of a comparator of the APC circuit can be determined on a basis of a specific condition when a ramping voltage value input to a second input of the comparator is substantially equal to a sum of a predetermined reference voltage value and the voltage value of the pad. | 09-18-2008 |
| 20080297170 | DYNAMIC INDUCTANCE MEASUREMENT OF ELECTRIC MOTOR - A system, apparatus, and method for dynamic measurement of inductance trend of a motor are disclosed. In one of the embodiment herein the system is configured to acquire inputs from the DUT using a Trigger system, a horizontal subsystem and the programming unit. The system is also configured to process such information for dynamic analysis and representation on an interface provided in the system based on different step sizes. | 12-04-2008 |
| 20080315896 | TECHNIQUES AND APPARATUS FOR THE MEASUREMENT OF MUTUAL INDUCTANCE IN A SWITCHED RELUCTANCE MACHINE - A system and technique for measuring the mutual inductance in a switched reluctance machine (SRM). In a first example embodiment of the technique, a voltage pulse is applied to primary coil when the machine is stationery. By measuring current in the primary coil and measuring induced voltages in adjacent open circuited coils mutual inductance may be determined. In another example embodiment, a voltage pulse is applied to the primary coil when the machine is stationery. The secondary coil is allowed to freewheel current through the phase. By measuring time taken by the primary phase to reach a preset value, the mutual inductance for the known position of a rotor can be determined. | 12-25-2008 |
| 20090015266 | RESONATOR, PRINTED BOARD, AND METHOD FOR MEASURING COMPLEX DIELECTRIC CONSTANT - A plurality of through-hole vias connected to conductor layers is disposed with gaps left between these vias around opening parts disposed in the conductor layers in a printed board in which these conductor layers are disposed parallel to each other so as to sandwich a dielectric layer in between. Furthermore, through-hole vias used for excitation are disposed in the opening parts of the conductor layers and regions of the dielectric layer matching these opening parts in a non-contact manner with the conductor layers. When the complex dielectric constant is measured, a high-frequency power is applied to the through-hole vias, and the power loss between the through-hole vias and the conductor layers is measured by the S parameter method. As a result, the complex dielectric constant and the frequency dependency of this complex dielectric constant can be measured with a high precision in a frequency range extending from several gigahertzes to 20 GHz, and there is no electrical interference with other parts even when this resonator is mounted on a board. | 01-15-2009 |
| 20100176817 | Bulk Current Injection (BCI) Probe with Multiple, Symmetrically Spaced Feeds - A Bulk Current Injection (BCI) transformer is provided herein with a magnetic core and a plurality of windings. The magnetic core is configured for encircling one or more electrical conductors under test. Each of the plurality of windings are wrapped, at least in part, around a longitudinal dimension of the magnetic core and spaced apart around an azimuthal dimension of the magnetic core. During injection tests, a power source may be coupled for supplying current to each of the windings at a respective “feed point.” Arranging multiple feed points around the magnetic core enables current flow through the windings to generate an azimuthally-uniform magnetic flux density in the magnetic core. The uniform magnetic flux density enables the BCI transformer to excite only common mode currents in the electrical conductors under test. BCI test methods, including injection tests and current sensing tests are also provided herein, along with a test setup for characterizing BCI transformers. | 07-15-2010 |
| 20110316558 | CIRCUIT SYSTEM AND METHOD FOR EVALUATING A SENSOR - A circuit system for evaluating a sensor, wherein the circuit system comprises two complex impedances ( | 12-29-2011 |
| 20120038368 | System and Method For Performing Electrical Impedance Tomography - An electrode array, a system and a method for reconstructing the distribution of electrical properties within a multi-material object. One embodiment includes electrodes arranged along a three-dimensional helical path to provide one or more helical arrays and circuitry to measure signals for calculating a conductivity or admittivity distribution representative of the interior of the structure. Image data may be obtained which is representative of the multi-material region. | 02-16-2012 |
| 20120182025 | Optically Stimulated Differential Impedance Spectroscopy - Methods and apparatuses for evaluating a material are described. Embodiments typically involve use of an impedance measurement sensor to measure the impedance of a sample of the material under at least two different states of illumination. The states of illumination may include (a) substantially no optical stimulation, (b) substantial optical stimulation, (c) optical stimulation at a first wavelength of light, (d) optical stimulation at a second wavelength of light, (e) a first level of light intensity, and (f) a second level of light intensity. Typically a difference in impedance between the impedance of the sample at the two states of illumination is measured to determine a characteristic of the material. | 07-19-2012 |
| 20120262186 | METHOD, SYSTEM AND COMPUTER-READABLE MEDIA FOR MEASURING IMPEDANCE OF AN ENERGY STORAGE DEVICE - Real-time battery impedance spectrum is acquired using a one-time record. Fast Summation Transformation (FST) is a parallel method of acquiring a real-time battery impedance spectrum using a one-time record that enables battery diagnostics. An excitation current to a battery is a sum of equal amplitude sine waves of frequencies that are octave harmonics spread over a range of interest. A sample frequency is also octave and harmonically related to all frequencies in the sum. A time profile of this sampled signal has a duration that is a few periods of the lowest frequency. A voltage response of the battery, average deleted, is an impedance of the battery in a time domain. Since the excitation frequencies are known and octave and harmonically related, a simple algorithm, FST, processes the time profile by rectifying relative to sine and cosine of each frequency. Another algorithm yields real and imaginary components for each frequency. | 10-18-2012 |
| 20120286800 | CAPACITANCE SENSOR WITH SENSOR CAPACITANCE COMPENSATION - A capacitance sensing circuit may include a switching circuit configured to generate a sensor current by charging and discharging a capacitive sensor electrode, and a current mirror that generates a mirror current based on the sensor current. Based on the mirror current, a measurement circuit generates an output signal representative of a capacitance of the capacitive sensor electrode. | 11-15-2012 |
| 20130076373 | TARGET SENSOR - Target sensor comprising: sensor probe having a resonance frequency that changes as the separation of the sensor probe and a target changes. Oscillator arranged to apply a radio frequency (RF) signal to the sensor probe, the oscillator having: control circuitry configured to regulate the frequency of the RF signal applied to the sensor probe to below the resonance frequency of the sensor probe. Detector arranged to detect an electrical characteristic of the oscillator that varies with the impedance of the sensor probe indicating an interaction of the sensor probe with the target. | 03-28-2013 |
| 20130187665 | DISAGGREGATION APPARATUS FOR IDENTIFYING AN APPLIANCE IN AN ELECTRICAL NETWORK - The invention relates to a disaggregation apparatus for identifying an appliance in an electrical network ( | 07-25-2013 |
| 20130285672 | ELECTRIC FIELD SENSING DEVICE - A sensing system is disclosed that uses at least one conductive plate and associated electronic circuitry to provide an output that is indicative of an object's position in relation to the at least one conductive plate. The sensing system is provided with a high impedance drive signal that varies as a result of the location of an object relative to the at least one conductive plate. The electronic circuitry receives a high impedance drive signal value as an input and a processor uses the value to calculate a digital output indicative of the object's position. The high impedance drive signal value is monitored over time enabling the objects position, displacement, pressure, movement, impact and energy to be determined. This data is output to a display and may also be transmitted to a person located remotely from the object being monitored. | 10-31-2013 |
| 20140015544 | DETECTION CIRCUIT FOR CAPACITIVE SENSOR - A detection circuit for a capacitive sensor includes a drive signal generator for applying drive signal to a sensor common terminal, a sense amplifier having input terminals respectively connected to sensor detection terminals, and a controller for controlling input common-mode voltage of the sense amplifier to predetermined voltage. The controller includes a feedback amplifier for outputting feedback voltage according to difference between the common-mode and predetermined voltages, a pair of first feedback capacitors having one ends respectively connected to the detection terminals and another ends connected together, a second feedback capacitor having one end connected to the other ends, and a voltage switcher for applying first preset voltage to the other ends during first level of the drive signal and for applying second preset voltage to the other ends and the predetermined voltage to another end of the second feedback capacitor during second level of the drive signal. | 01-16-2014 |
| 20140049266 | Signal Processing For A Capacitive Sensor System With Robustness To Noise - A capacitive sensor includes a transmit electrode configured to provide an alternating electric field to a sensor; one or more receive electrodes for detecting variations in the alternating electric field; and an adaptive frequency adjustment unit configured to adjust an operating frequency of the alternating electric field responsive to detection of a noise measure, such as noise power. | 02-20-2014 |
| 20140203818 | SYSTEM AND METHOD FOR MONITORING CARDIOMYOCYTE BEATING, VIABILITY, MORPHOLOGY, AND ELECTROPHYSIOLOGICAL PROPERTIES - Devices, systems and methods for monitoring excitable cells, such as cardiomyocytes, on microelectrode arrays that couple the electro-stimulation of excitable cells to induce or regulate cardiomyocyte beating and the simultaneous measurement of impedance and extracellular recording to assess changes in cardiomyocyte beating, viability, morphology or electrophysical properties in response to a plurality of treatments. | 07-24-2014 |
| 20140218047 | LOAD-TESTING CIRCUIT FOR USB PORTS - A load-testing circuit is used for simulating maximum standard load currents for different types of USB ports. The load-testing circuit includes a first electronic switch, a second electronic switch, and a current selection module including a plurality of current branch circuits. When one of the current branch circuits is activated, a voltage at a third terminal of the first electronic switch is supplied to a first terminal of the second electronic switch through the activated current branch circuit to turn on the second electronic switch. A current of the third terminal of the first electronic switch is approximately equal to a current of the activated current branch circuit. | 08-07-2014 |
| 20160018349 | SENSORS AND SENSOR INTERFACE SYSTEMS - An apparatus, comprising a housing; a first connector coupled to the housing and having a first plurality of contacts; a second connector coupled to the housing and having a second plurality of contacts; and a circuit electrically connected to at least one of the first contacts and at least one of the second contacts. The circuit is encapsulated within the housing. The circuit is configured to generate an output signal in response to a resistance sensed at the at least one of the first contacts. | 01-21-2016 |
| 20160075297 | CAPACITIVE SENSING DEVICE - A capacitive sensing device comprises an antenna electrode for emitting an alternating electric field in response to an alternating voltage caused in the antenna electrode and a control and evaluation circuit configured to maintain the alternating voltage equal to an alternating reference voltage by injecting a current into the antenna electrode and to measure the current. The control and evaluation circuit includes a microcontroller with a digital output for providing a digital signal and a low-pass filter operatively connected to the digital output for generating the alternating reference voltage by low-pass-filtering the digital signal. | 03-17-2016 |
| 20160146886 | Method and Apparatus for Checking a Circuit - A method for checking a circuit devised for contactless data communication, which comprises an antenna and an electronic component coupled with the antenna, comprises the following steps: generating an alternating magnetic field of a field strength, and arranging the circuit in the alternating field region. Then the electronic circuit is excited by means of an energy pulse. In a further step, an oscillation of the circuit in response to the excitation of the circuit by the energy pulse is captured. The captured oscillation of the circuit is finally evaluated, in particular with regard to a self-resonant frequency of the circuit. | 05-26-2016 |
| 20160187450 | Signal Processing For A Capacitive Sensor System With Robustness To Noise - A capacitive sensor includes a transmit electrode configured to provide an alternating electric field to a sensor; one or more receive electrodes for detecting variations in the alternating electric field; and an adaptive frequency adjustment unit configured to adjust an operating frequency of the alternating electric field responsive to detection of a noise measure, such as noise power. | 06-30-2016 |
| 324604000 | Including marker signal generator circuit | 1 |
| 20120105077 | EXCITATION CIRCUIT FOR DC SENSORS - A circuit for exciting at least one DC sensor is provided in which the circuit has a digital regulation controller connected to a main system and to a regulation loop. The main system has a DAC connected to the sensor via a non-inverted amplified path and via an inverted amplified path in order to send sensor excitation signals including a DC component in differential mode. The regulation system includes an ADC connected to the amplified paths. The circuit includes a monitoring system that is connected to the controller in parallel with the converter in order to send signals as a function of an AC component of the signals taken from the amplified paths. The digital controller is arranged to inject a sinewave in common mode into the excitation signals and to analyze signals output by the monitoring system and signals output by the ADC. | 05-03-2012 |
| 324605000 | For response signal evaluation or processing | 22 |
| 20100123466 | System and Method for Corner Frequency Compensation - A system and method for corner frequency compensation in a wireless receiver. A method comprises computing a corner frequency of a filter, and determining if the computed corner frequency is different from a desired corner frequency by less than a threshold. The method further comprises if the computed corner frequency differs from the desired corner frequency by more than the threshold, adjusting parameters of the filter to alter the corner frequency, and repeating the computing and the determining. The method additionally comprises if the computed corner frequency differs from the desired corner frequency by less than the threshold, leaving the parameters of the filter unchanged. The computing uses a measured phase response of the filter at a frequency outside of a passband of the filter. | 05-20-2010 |
| 20110273187 | PASSIVE SOURCE AND LOAD-PULL ARCHITECTURE FOR HIGH REFLECTION FACTOR SYNTHESIS - An enhanced loop in a passive tuner consists of an extremely low loss coupler and a high directivity circulator. In the case of source reflection factor synthesis, a passive loop generates an additional incident traveling wave. This wave, added to the primary incident traveling wave, augments the traveling wave and thus increases the magnitude of the synthesized reflection factor at the source port of a device, such as a transistor. In the case of load reflection factor synthesis, the passive loop augments the initial reflected traveling wave by pumping an additional traveling wave. This additional traveling wave helps in synthesizing a higher load reflection factor at the load port. This architecture is capable of high reflection factor synthesis that enables load synthesis even on the border of the Smith chart. There is no problem of instability with the architecture of the present invention. | 11-10-2011 |
| 20130320995 | POWER AMPLIFICATION OF A MULTI-TONE TEST SIGNAL - Disclosed are a circuit and method for amplifying the power of a multi-tone input signal. The multi-tone input signal is filtered separating out one signal having a tone at a fundamental frequency from another signal having additional tones at additional frequencies. The signal having the tone at the fundamental frequency is amplified and then filtered removing any harmonics added during amplification. The signals are then recombined generating a multi-tone output signal, wherein the tone at the fundamental frequency is boosted (i.e., has a higher power in the multi-tone output signal than in the multi-tone input signal), but the additional tones at the additional frequencies are not (i.e., the additional tones at the additional frequencies have essentially the same power in the multi-tone output and input signals). Also disclosed herein are embodiments of a testing system and method incorporating the above-described circuit to allow for testing of high power devices. | 12-05-2013 |
| 20150077135 | Method for amplifying an echo signal suitable for vehicle surroundings detection and device for carrying out the method - A method for amplifying an echo signal, in which an analog echo signal suitable for detection of a vehicle's surroundings is amplified by a gain dependent on the transit time of the echo signal, the analog echo signal being amplified by an amplifier having a plurality of outputs, each having a different gain, and a downstream A/D converter having a time-variable reference voltage. In the process, there is a switch between the different outputs of the amplifier at predefined switching points in time, and the reference voltage of the A/D converter varies over time between the switching points in time in such a way that the echo signal is present at the output of the A/D converter with a transit time-dependent total gain having a predefined characteristic. | 03-19-2015 |
| 20150084644 | PHASE MEASUREMENT DEVICE AND METHOD IN MICROWAVE TOMOGRAPHY SYSTEM - A phase measurement method in a microwave tomography system may include: transmitting a first Tx frequency signal, receiving a signal corresponding to the first Tx frequency signal, and measuring a first phase value; | 03-26-2015 |
| 20150097577 | CAPACITANCE DETECTION CIRCUIT THAT DETECTS MINUTE CHANGES IN CAPACITANCE - A capacitance detection circuit detects changes in the capacitance of a variable capacitor by using the change in capacitance to change the resonant frequency of a variable capacitor oscillator. The resonant frequency of the variable capacitor oscillator is converted from the time domain to the frequency domain, and then selected frequencies values are compared to known frequency domain values to detect the magnitude of the change in capacitance. | 04-09-2015 |
| 20160109549 | METHOD FOR COMPENSATING FOR PROPAGATION INHOMOGENEITIES FOR A TEMPORAL REFLECTOMETRY SIGNAL - A method for compensating for the propagation inhomogeneities in a time-domain reflectogram measured for a given cable comprises the following steps, executed in an iterative manner: injecting a test signal into the cable, measuring the reflection of the test signal to form a time-domain reflectogram, identifying at least a time portion of the time-domain reflectogram comprising at least one amplitude peak corresponding to a propagation inhomogeneity, subtracting the identified time portion of the reflectogram, divided by the signal reflection coefficient at the injection point, from the test signal, and replacing the test signal with the result of the subtraction. | 04-21-2016 |
| 20160124030 | HIGH-CURRENT SENSING SCHEME USING DRAIN-SOURCE VOLTAGE - In one embodiment, a method for measuring current is described herein. The method comprises shorting first and second inputs of an amplifying circuit to generate a first output signal, and converting the first output signal into an offset cancelation value. The method also comprises passing a current through a power switch, wherein the current generates a voltage drop across the power switch, applying the voltage drop across the first and second inputs of the amplifying circuit to generate a second output signal, and converting the second output signal into a current value. The method further comprises subtracting the offset cancelation value from the current value to generate an offset-compensated current value. | 05-05-2016 |
| 324606000 | Including a signal comparison circuit | 9 |
| 20080204040 | Systems and arrangements for determining properties of a transmission path - One disclosed method is to automate testing for transmission path impedance conditions on a circuit board. The method can include transmitting a plurality of electrical pulses on a transmission path utilizing an on-board transmitter, the electrical pulses can have a time period and the transmission path can have impedance mismatches to reflect energy of the electrical pulse back towards the on-board transmitter. After the pulse is transmitted, a voltage of the reflected energy can be compared with a reference voltage at different time intervals. A single bit can be acquired for each voltage/time sample and the bits can be sequentially stored in a shift register. The digital data that is stored in the shift register can be compared to existing data in memory to determine a quality of the transmission path of the printed circuit board. | 08-28-2008 |
| 20080284451 | Device, method and system for estimating the termination to a wired transmission-line based on determination of characteristic impedance - A system and method for measuring a characteristic impedance of a transmission-line comprises transmitting energy to the line, and shortly after measuring the voltage/current involved and thus measuring the equivalent impedance. The measured characteristic impedance may then be used in order to determine the termination value required to minimize reflections. In another embodiment, the proper termination is set or measured by adjusting the termination value to achieve maximum power dissipation in the terminating device. The equivalent characteristic impedance measurement may be used to count the number of metallic conductors connected to a single connection point. This abstract is not intended to limit or construe the scope of the claims. | 11-20-2008 |
| 20090160459 | SYSTEM FOR DIAGNOSING IMPEDANCES HAVING ACCURATE CURRENT SOURCE AND ACCURATE VOLTAGE LEVEL-SHIFT - The present invention relates to a system for measuring a capacitor (C). A current source ( | 06-25-2009 |
| 20120025846 | ON-CHIP TESTING USING TIME-TO-DIGITAL CONVERSION - A method and system for testing the functionality of a through-silicon-via in an integrated circuit is disclosed. In one aspect, the functionality is tested by measuring its capacitance from one side only. The capacitance of the TSV can be determined by measuring a timing delay introduced in a measurement circuit due to the presence of the TSV. The timing delay is determined by comparing the timing of measurement signal from the measurement circuit with the timing of a reference signal provided by a reference circuit. The comparison is carried out using a digital timing measurement circuit, such as a time-to-digital converter. | 02-02-2012 |
| 20120280697 | VEHICULAR INSULATION RESISTANCE DETECTION APPARATUS - The vehicular insulation resistance detection apparatus includes a cyclic signal generating unit that generates a cyclic signal, a first resistor that has one end to which the cyclic signal is applied, a first capacitor that has one end connected to the other end of the first resistor and the other end connected to a high-voltage circuit, a second capacitor that has one end connected to the other end of the first resistor, a second resistor that has one end connected to the other end of the second capacitor and the other end connected to a low-voltage ground that is a circuit ground of a low-voltage circuit, a series circuit that includes a diode and a third resistor connected in series, and is connected in parallel with the second capacitor, this diode having a forward direction coincident with a direction from the other end of the second capacitor to the one end of the second capacitor, a voltage detection unit that detects a voltage between the low-voltage ground and the other end of the second capacitor as a detection signal, and an insulation resistance detection unit that detects a resistance value of an insulation resistance based on an amplitude of the detection signal. | 11-08-2012 |
| 20130249567 | CAPACITIVE LOAD TESTING DEVICE OF POWER SUPPLY - A device for testing capacitive loads of a power supply includes a controller, a power supply switching circuit, a capacitive load switching circuit, and a current sampling circuit. The power supply switching circuit selects one of output voltages of the power supply to be electronically connected to the capacitive load switching circuit and the current sampling circuit. The current sampling circuit samples an output current of one output of the power supply selected by the controller. The controller turns on and off switches of the capacitive load switching circuit for matching an output current of the power supply with a reference current until the output current equals to the reference current. The controller outputs a total magnitude of the capacitive loads. | 09-26-2013 |
| 20130285673 | SYSTEM AND METHOD FOR LOW VOLTAGE DIFFERENTIAL SIGNALING TEST - A test system and method for low voltage differential signaling (LVDS) is provided. The system comprises: an input module for the user to input the information needed by the test; a communication module for connecting the control device | 10-31-2013 |
| 20140197846 | DETECTING APPARATUS, WAFER AND ELECTRONIC DEVICE - Provided is a detection apparatus that detects process variation in a plurality of comparators that each output a comparison result obtained by comparing a signal level of an input signal to a reference level, the detection apparatus comprising a signal input section that inputs the input signal and the reference level in common to the comparators, and sequentially changes the signal level of the input signal; and a detecting section that detects, for each signal level, a number of comparison results that indicate a predetermined result, from among the comparison results of the comparators, and detects the process variation based on a distribution of the number of comparison results that indicate the predetermined result. | 07-17-2014 |
| 20160252561 | AUTOMATED HIGH FREQUENCY TEST STATION | 09-01-2016 |
| 324607000 | Including a conversion (e.g., A->D or D-> A) process | 4 |
| 20080297171 | TRANSCEIVER SYSTEM THAT ESTIMATES A VOLTAGE STANDING WAVE RATIO - A transceiver system and method determining a voltage standing wave ratio (VSWR) is provided. The system includes at least one amplifier, a filter bank, a plurality of detectors, and at least one processor. The at least one amplifier receives an input signal. The filter bank is in electrical communication with the at least one amplifier. The plurality of detectors are in electrical communication with the filter bank, where a first detector of the plurality of detectors is in electrical communication with a first portion of the filter bank, and a second detector of the plurality of detectors is in electrical communication with a second portion of the filter bank. The at least one processor is in electrical communication with the plurality of detectors, and estimates a VSWR based upon voltages detected by the first and second detectors. | 12-04-2008 |
| 20100141268 | SYSTEM AND METHOD FOR MEASURING SERIES-CONNECTED CELL VOLTAGES USING A FLYING CAPACITOR WITH SELF CALIBRATION - System and method for measuring series-connected cell voltages using a flying capacitor with self-calibration. In at least one embodiment of a system of the present disclosure, the system comprises a capacitor, a switch, an amplifier, an analog-to-digital converter, and a precision voltage device. In an exemplary method of the present disclosure, the method comprises the steps of charging a capacitor, obtaining a charge voltage reading, discharging the capacitor for a known duration, obtaining a discharge voltage reading, and signaling a malfunction of the discharge voltage reading is greater than a predetermined voltage level. | 06-10-2010 |
| 20110012618 | METHOD AND APPARATUS FOR SENSING CAPACITANCE VALUE AND CONVERTING IT INTO DIGITAL FORMAT - A capacitive sensing system are configured to sense a capacitance value and convert the sensed capacitance value to a digital format. The capacitive sensing system provides good selectivity and immunity to noise and interference, which can be further enhanced by enabling spread spectrum excitation. In some embodiments, the capacitive sensing system utilizes a sinusoidal excitation signal that results in low electromagnetic emissions, limited to narrow frequency band. In some embodiments, the capacitive sensing system is configured to operate in a spread spectrum mode, in which the majority of the excitation signal power is carried in the assigned bandwidth. The excitation frequency and the bandwidth of the spread spectrum excitation signal are programmable in a wide range, which allows for avoiding frequency conflicts in the operating environment. | 01-20-2011 |
| 20130271155 | IMPEDANCE MEASUREMENT DEVICE AND METHOD - A digital sine wave may be converted to an analog signal at a digital to analog converter (DAC). The converted analog signal may be supplied to a device and an analog return signal from the device may be passed through a relaxed anti-aliasing filter and converted to digital code words at an analog to digital converter (ADC). An impedance may be calculated from the results of a Fourier analysis of the digital code words. The ADC and DAC clock frequencies may be asynchronous, independently variable, and have a greatest common factor of 1. The clock frequencies of the ADC and/or DAC may be adjusted to change a location of images in the ADC spectrum. By using these different, adjustable clock frequencies for the ADC and the DAC, an analog signal may have increased aliasing without introducing signal errors at a frequency of interest. | 10-17-2013 |
| 324608000 | Including a ratiometric function | 1 |
| 20080252302 | Device for analyzing the composition of the contents of a container comprising means for obtaining at least one additional physical datum relating to the container - The invention relates to a device for analyzing the composition of the contents of a container, comprising:
| 10-16-2008 |
| 324609000 | For sensing | 15 |
| 20090121727 | ELECTRICAL IMPEDANCE TOMOGRAPHY OF NANOENGINEERED THIN FILMS - The present teachings relate to the application of electrical impedance tomography (EIT) to demonstrate the multifunctionality of carbon nanocomposite thin films under various types of environmental stimuli. Carbon nanotube (CNT) thin films are fabricated by a layer-by-layer (LbL) technique or other techniques and mounted with electrodes along their boundaries. The response of the thin films to various stimuli determined by relying on electric current excitation and corresponding boundary potential measurements. The spatial conductivity variations are reconstructed based on a mathematical model for the EIT technique. Here, the ability of the EIT method to provide two-dimensional mapping of the conductivity of CNT thin films is validated by (1) electrically imaging intentional structural defects in the thin films and (2) mapping the film's response to various pH environments. | 05-14-2009 |
| 20130088242 | Microcontroller with Sequencer Driven Analog-to-Digital Converter - An automated sequencer for a microcontroller is provided which makes a CVD conversion process a hardware function. The sequencer controls the charging/discharging of the sensor and ADC sample-and-hold capacitances, as well as the voltage division process. It also initiates the ADC conversion, with an optional second conversion for greater resolution, or a differential conversion | 04-11-2013 |
| 20130207669 | INPUT DEVICE - The invention is provides an input device including a base, a plastic part provided on the base, and a touch sensor embedded in the plastic part. | 08-15-2013 |
| 20130271156 | Measuring Device - A measuring device for measuring a process variable, comprising: an input circuit having a supply line and a return line, connectable to a superordinated unit. Energy supply of the measuring device and signal transmission, between the measuring device and a superordinated unit occurs over a line-pair. Input voltage is applied to the measuring device via the line pair. A series regulator installed in the supply line for controlling an electrical current flowing via the line-pair, a shunt regulator connected after the series regulator and installed in a parallel branch, and an apparatus for controlling a voltage drop across the series regulator are provided. The apparatus sets the voltage drop across the series regulator as a function of the applied input voltage, which is greater than a predetermined minimum input voltage, to a value predetermined by a characteristic curve for the particular input voltage and lying above a minimum value required for operation of the series regulator. A measuring sensor connected to the input circuit and supplied with energy via the input circuit for determining the process variable and for producing a measurement signal representing the process variable. | 10-17-2013 |
| 20130285674 | ULTRA LOW STARTUP CURRENT POWER DETECTION APPARATUS - A power detection apparatus is provided. The power detection apparatus includes a first current processing circuit and a second current processing circuit. The first current processing circuit is configured to provide a dynamic bias voltage at a bias terminal in response to a variation of a system power. The second current processing circuit is coupled to the first current processing circuit and is biased under the dynamic bias voltage for outputting a power good signal at an output terminal to represent that the system power is ready when the dynamic bias voltage is greater than a threshold voltage. | 10-31-2013 |
| 20140077822 | NOISE MEASUREMENT FOR MEASURED DISPLACEMENT - An apparatus including a first plurality of electrodes and a second plurality of electrodes is disclosed. Each electrode of the first plurality of electrodes is configured to measure an electric field associated with a position of a moving object. The second plurality of electrodes is disposed further away from the moving object in comparison to the first plurality of electrodes. The second plurality of electrodes is configured to measure a signal associated with ambient noise. | 03-20-2014 |
| 20140139237 | OFFSET REDUCTION FOR DISPLACEMENT SENSOR - A device including a displacement measurement circuitry and a charge adjuster circuitry is disclosed. The displacement measurement circuitry may be configured to measure displacement associated with a rotating object. The charge adjuster circuitry is coupled to the displacement measurement circuitry. The charge adjuster circuitry is configured to measure an offset associated with ambient noise in the device over time. The charge adjuster circuitry is further configured to adjust sensors of the displacement measurement circuitry to reduce the measured offset. | 05-22-2014 |
| 20140167781 | SENSOR DEVICE - An objective of the present invention is to provide a sensor device with an increased accuracy. In order to achieve the objective, provided is a sensor device includes: an external terminal | 06-19-2014 |
| 20140203819 | Cloaked electromagnetic field sensor - A cloaked field sensor apparatus and system using a cloaking barrier sheath to substantially enclose the surface of a transmitter conduit exposed to an electromagnetic field being measured to reduce the field sensor's interference with the electromagnetic field being measured. Multiple cloaked field sensor apparatuses may be aligned in an array and use identical or different cloaking barrier sheaths. | 07-24-2014 |
| 20150070028 | ROTARY RESONANT THREE-DIMENSIONAL ELECTRIC FIELD SENSOR - A rotary resonant three-dimensional electric field sensor is disclosed. The rotary resonant three-dimensional electric field sensor includes: a substrate ( | 03-12-2015 |
| 20150145527 | Capacitive Sensor Circuit - A capacitive sensor circuit includes a sensor for providing a sensing voltage, a pre-processing circuit electrically connected to the sensor via an input connection line, and an impedance transformation circuit electrically connected between the input connection line and a bias point. The impedance transformation circuit includes a first impedance unit and a second impedance unit. The first impedance unit includes a first current mirror, and the second impedance unit includes a second current mirror configured as an invented matching current mirror of the first current mirror. The first current mirror is electrically connected to the input connection line, and the second current mirror is electrically connected to the bias point to receive a bias voltage. | 05-28-2015 |
| 20150345989 | SYSTEM FOR SHIFTING AN ANALOGICAL OUTPUT SIGNAL OF A SENSOR DEVICE, SENSOR-BEARING UNIT, SHIFTER MODULE AND SHIFTING METHOD - A sensor device analogical output signal shifting system comprising the sensor device including at least two detection cells adapted to equip a mechanical device and deliver at least two analogical output signals depending on behavior of the mechanical device. A shifter circuit selectively processes the analogical output signals and comprising at least a first part including at least one passive analogical component having a variable parameter and a second part including at least one passive analogical component having a variable parameter; and a control component for controlling the variable parameters of the passive analogical components, a variation of these variable parameters shifting at least one of the sensor device analogical output signals in the circuit. The circuit delivers at least two sensor device analogical output signals, including at least one shifted output signal including the first shifted analogical output signal and/or the second shifted sinusoidal signal of the sensor device. | 12-03-2015 |
| 20160116516 | SIMULTANEOUS IMPEDANCE TESTING METHOD AND APPARATUS - A method and apparatus for determining the impedance of the plurality of channels comprising a plurality of channels having a plurality of first channels and a plurality of second channels, at least one reference channel, a signal generator electrically connected to the plurality of channels, a reference signal generator connected to the reference channel, at least one amplifier connected to each of the plurality of channels and the reference channel and at least one filter connected to an output of the at least one amplifier to filter the output signal from the at least one amplifier. The signal generator is configured to provide a plurality of input signals to the plurality of channels. The reference signal generator provides an input signal to the reference channel. | 04-28-2016 |
| 324610000 | Including a bridge circuit | 2 |
| 20130057298 | METHOD AND DEVICE FOR CHARACTERIZING OR MEASURING A CAPACITANCE - The disclosure relates to a method for characterizing or measuring a capacitance, comprising: linking the capacitance to a first mid-point of a first capacitive divider bridge, applying to the divider bridge a bias voltage, maintaining the voltage of the first mid-point near a reference voltage, discharging a second mid-point of a second divider bridge in parallel with the first by means of a constant current, and measuring the time for a voltage of the second mid-point to become equal to the voltage of the first mid-point. The disclosure may be applied in particular to the control of a touch screen display. | 03-07-2013 |
| 20130063157 | METHOD AND DEVICE FOR CHARACTERIZING OR MEASURING A FLOATING CAPACITANCE - The disclosure comprises: linking a first terminal of the capacitance to the mid-point of a first voltage divider bridge, applying a first voltage to a second terminal of the capacitance, maintaining a voltage of a mid-point of the first divider bridge near a reference voltage, and discharging a mid-point of a second divider bridge with a constant current. When a voltage of the mid-point of the second bridge reaches a first voltage threshold, applying a second voltage to the second terminal of the capacitance, and measuring the time for the voltage to reach a second threshold. | 03-14-2013 |
