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60results about How to "Minimizing variance" patented technology
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Method of Automatically controlling the Trajectory of a Drilled Well
ActiveUS20090000823A1Minimizing varianceElectric/magnetic detection for well-loggingDirectional drillingRate equationAutomatic control
Steering behavior model can include build rate and / or turn rate equations to modal bottom-hole assembly behavior. Build and / or turn rate equations can be calibrated by adjusting model parameters thereof to minimize any variance between actual response 118 and estimated response produced for an interval of the well. Estimated position and orientation 104 of a bottom-hole assembly along a subsequent interval can be generated by inputting subsequent tool settings into the calibrated steering behavior model. Estimated position and orientation 104 can be compared to a well plan 106 with a controller 108 which determines a corrective action 110. Corrective action 110 can be converted from a build and / or turn rate to a set of recommended tool settings 114 by using an inverse application 112 of the steering behavior model. As additional data 118 becomes available, steering behavior model can be further calibrated 102 through iteration.
Owner:SCHLUMBERGER TECH CORP
System and method for vibrotactile guided motional training
Owner:BIODEX MEDICAL SYST INC +1
Method and system for scheduling traffic in a wireless network
InactiveUS7460543B2Optimize the numberMinimizing varianceEnergy efficient ICTError preventionQuality of serviceTraffic capacity
The present invention provides a method and system for efficiently scheduling wireless LAN traffic, giving the network the ability to serve both real-time and non-real time applications concurrently, while maintaining a requested level of quality of service for the real time application. It describes a method for scheduling quality of service traffic and a method to optimize this schedule thereby reducing the overall amount of time that is required for serving quality of service traffic (which is coordinated by a centralized network coordinator entity) and increasing the bandwidth available for non-real-time traffic. One application of such a scheduler would be WLANs that carry AV streams, such as may be found in a home based WLAN. Furthermore, a method is provided for announcing the schedule to all nodes in a wireless network to, for example, implement a power savings feature, thereby optimizing battery life and reducing the size and weight of portable network access terminals.
Owner:IMAGE PROCESSING TECH
Composite compositions for electrophoresis
InactiveUS20050121325A1Minimize impactEfficient screeningSludge treatmentVolume/mass flow measurementElectrophoresisOrganic chemistry
The invention is drawn to composite agarose / acrylamide compositions and gels. In particular it relates to gels for the separation of molecules, particularly macromolecules such as proteins. The invention is also directed to the preparation of composite gels, the separation of molecules by techniques such as electrophoresis using such gels, and the transfer of proteins from such gels to a transfer membrane using an immunoblot transfer gel.
Owner:LIFE TECH ISRAEL
Orthodontic appliances including at least partially un-erupted teeth and method of forming them
ActiveUS10613515B2Minimizing varianceProgramme controlAdditive manufacturing apparatus3d descriptorsDentistry
The example systems, methods, and / or computer-readable media described herein help with design of highly accurate models of un-erupted or partially erupted teeth and help fabricate of aligners for un-erupted or partially erupted teeth. Automated agents that use machine learning models to parametrically represent three-dimensional (3d) virtual representations of teeth as 3D descriptors in a 3D descriptor space are provided herein. In some implementations, the automated agents described herein provide instructions to fabricate aligners for at least partially un-erupted teeth using representative 3D descriptor(s) of a tooth type.
Owner:ALIGN TECH
Method of automatically controlling the trajectory of a drilled well
ActiveUS7957946B2Minimizing varianceElectric/magnetic detection for well-loggingAnalogue computers for chemical processesRate equationAutomatic control
Steering behavior model can include build rate and / or turn rate equations to modal bottom-hole assembly behavior. Build and / or turn rate equations can be calibrated by adjusting model parameters thereof to minimize any variance between actual response 118 and estimated response produced for an interval of the well. Estimated position and orientation 104 of a bottom-hole assembly along a subsequent interval can be generated by inputting subsequent tool settings into the calibrated steering behavior model. Estimated position and orientation 104 can be compared to a well plan 106 with a controller 108 which determines a corrective action 110. Corrective action 110 can be converted from a build and / or turn rate to a set of recommended tool settings 114 by using an inverse application 112 of the steering behavior model. As additional data 118 becomes available, steering behavior model can be further calibrated 102 through iteration.
Owner:SCHLUMBERGER TECH CORP
Methods for detecting protein binding sequences and tagging nucleic acids
ActiveUS20180335424A1Variances among different samples during different experiments are significantly minimizedMinimizing varianceMicrobiological testing/measurementTransferasesProtein formationFadd protein
Owner:THE TRUSTEES OF PRINCETON UNIV
Managing Time-Substitutable Electricity Usage using Dynamic Controls
InactiveUS20140365022A1Minimizing varianceMaximize profitabilityProgramme controlMechanical power/torque controlSmart gridPeak value
A predictive-control approach allows an electricity provider to monitor and proactively manage peak and off-peak residential intra-day electricity usage in an emerging smart energy grid using time-dependent dynamic pricing incentives. The daily load is modeled as time-shifted, but cost-differentiated and substitutable, copies of the continuously-consumed electricity resource, and a consumer-choice prediction model is constructed to forecast the corresponding intra-day shares of total daily load according to this model. This is embedded within an optimization framework for managing the daily electricity usage. A series of transformations are employed, including the reformulation-linearization technique (RLT) to obtain a Mixed-Integer Programming (MIP) model representation of the resulting nonlinear optimization problem. In addition, various regulatory and pricing constraints are incorporated in conjunction with the specified profit and capacity utilization objectives.
Owner:IBM CORP
EXTRINSIC CALIBRATION METHOD OF MULTIPLE 3D LiDAR SENSORS FOR AUTONOMOUS NAVIGATION SYSTEM
PendingUS20210103040A1Easy to exportImprove performanceVehicle position/course/altitude controlElectromagnetic wave reradiationAutonomous Navigation SystemPoint cloud
An extrinsic calibration method of multiple 3D LiDAR sensors for an autonomous navigation system is proposed, the method including collecting point clouds by each of the multiple 3D LiDAR sensors; extracting multiple target planes corresponding to a plane from the point clouds of each of the 3D LiDAR sensors; by using the target plane of any one of the multiple 3D LiDAR sensors as a reference plane, detecting a corresponding plane from the target planes of each of the remaining of the 3D LiDAR sensors on the basis of a similarity with the reference plane; calculating initial extrinsic parameters for matching between the reference plane and the corresponding plane based on plane parameters of the reference plane and corresponding plane corresponding to each other; and calculating final extrinsic parameters that minimize variance of measurement points for the reference plane and corresponding plane, on the basis of the initial extrinsic parameters.
Owner:KOREA UNIV RES & BUSINESS FOUND
Optical distortion calibration for electro-optical sensors
ActiveUS20090299674A1Eliminates calibrationEfficient and accurate calibrationTelevision system detailsPhotometry using reference valueNonlinear distortionElectro-optical sensor
Optical distortion calibration for an Electro-Optical sensor in a chamber eliminates calibration of the mirror controller and allows for calibration while the target is in motion across the FOV thus providing a more efficient and accurate calibration. A target pattern is projected through sensor optics with line of sight motion across the sensor FOV to generate a sequence of frames. Knowing that the true distances between the same targets remain constant with line of sight motion across the sensor's FOV. coefficients of a function F representative of the non-linear distortion in the sensor optics are fit from observed target positions in a subset of frames to true line of sight so that distances between targets are preserved as the pattern moves across the FOV. The coefficients are stored as calibration terms with the sensor.
Owner:RAYTHEON CO
Gate drive apparatus
ActiveUS8138818B2Suppress varianceMinimizing varianceTransistorElectronic switchingDriver circuitThreshold voltage
A gate drive apparatus including a constant-current-pulse gate drive circuit which creates a gate signal for a switching device as a constant-current output, a constant-voltage-pulse gate drive circuit which creates the gate signal as a constant-voltage output, and a decision / switch circuit which switches the operation of the constant-current-pulse gate drive circuit and the operation of the constant-voltage-pulse gate drive circuit. The variance of switching speeds attributed to the variances of threshold voltages and mirror voltages in a plurality of switching devices which are driven by the gate drive apparatus can be suppressed, and the variance of losses can be minimized.
Owner:MITSUBISHI ELECTRIC CORP
Weighted noise compensating method and camera used in millimeter wave imaging
InactiveUS6870162B1Reducing and eliminating of and inherent noise-responsive variationReduce unpredictableTelevision system detailsRadiation pyrometryRadiometerEngineering
Unpredictable response variations of the output value signals from radiometer or receiver channels due to noise are minimized when composing a millimeter wave image. The image is composed from composition signals which are each related to the corresponding output value signals from the channels. Some composition signals are weighted by a weighting factor which is different from a weighting factor used for weighting other composition signals. Preferably, the reciprocal of the standard deviation of variations of the output value signals from each channel is used as the weighting factor for deriving the composition signals from the output value signals from that channel. The intensity of each pixel of the image is composed by adding the weighted composition signals associated with that pixel.
Owner:MVT EQUITY
Power supply for supplying multi-channel, stable, isolated DC power and method of making same
ActiveUS7714583B2Minimizing varianceAc-dc conversionConstant-current supply dc circuitTransformerConductor Coil
A power supply having an input, wherein the power supply includes a multi-winding transformer having an input and a plurality of outputs, and a plurality of rectifiers to provide a plurality of DC output voltages, wherein each rectifier is coupled to an output of the multi-winding transformer. The power supply further includes a regulator circuit coupled between the transformer input and one of the transformer outputs, and configured to regulate an input voltage to the multi-winding transformer to minimize a variance of each rectifier DC output voltage.
Owner:GENERAL ELECTRIC CO
Mode Based Metal Strip Stabilizer
ActiveUS20100161104A1Damper of strip vibrationReduce exerciseHot-dipping/immersion processesMeasuring devicesEngineeringActuator
A method for vibration damping and shape control of a suspended metal strip during continuous transport in a processing facility in a steel rolling line or surface treating line in a steel mill, where the method comprises the steps: measuring distance to the strip by a plurality of non-contact sensors; and generating a strip profile from distance measurements; decomposing the strip profile to a combination of mode shapes; determining coefficients for the contribution from each mode shape to the total strip profile; and controlling the strip profile by a plurality of non-contact actuators based on a combination of mode shapes.
Owner:ABB (SCHWEIZ) AG
System and method for geo-locating a receiver with reduced power consumption
InactiveUS8009086B2Significant processing burdenLow costSatellite radio beaconingGeographic siteGeolocation
A system and process for the geo-location of an asset given no a priori knowledge regarding time and location of the asset with minimized power consumption is disclosed. In the preferred embodiment, the system is accurate to about 30 meters CEP (50% circular error probable) using just a short segment, e.g., 100-200 ms, of digitized GPS L1 signal data.
Owner:THE UNITED STATES OF AMERICA AS REPRESENTED BY THE SECRETARY OF THE NAVY
Reference voltage generation circuit, drive device, print head, and image forming apparatus
ActiveUS20110261138A1Reduce varianceLarge coefficientElectrographic process apparatusVisual presentationElectrical resistance and conductanceEngineering
A reference voltage generation circuit includes a first current-mirror circuit including a first MOS transistor connected to a first power source and a second MOS transistor of the first conductive type connected to the first power source; a second current-mirror circuit including a third MOS transistor and a fourth MOS transistor; a first resistor connected to the first node; a first bipolar transistor having a collector connected to the first resistor, an emitter connected to a second power source, and a base connected to the first node; a second bipolar transistor having a collector connected to the second node, an emitter connected to the second power source, and a base connected to the first bipolar transistor; a fifth MOS transistor connected between the first power source and an output terminal; and a third resistor connected between the output terminal and the second power source.
Owner:OKI DATA CORP
Weighted noise compensating method and camera used in millimeter wave imaging
InactiveUS20060006322A1Reducing eliminating effectReduce unpredictable and non-calculable variationTelevision system detailsRadiation pyrometryRadiometerSignal correlation
Unpredictable response variations of the output value signals from radiometer or receiver channels due to noise are minimized when composing a millimeter wave image. The image is composed from composition signals which are each related to the corresponding output value signals from the channels. Some composition signals are weighted by a weighting factor which is different from a weighting factor used for weighting other composition signals. Preferably, the reciprocal of the standard deviation of variations of the output value signals from each channel is used as the weighting factor for deriving the composition signals from the output value signals from that channel. The intensity of each pixel of the image is composed by adding the weighted composition signals associated with that pixel.
Owner:VAIDYA NITIN M
Roller blind system for a sliding roof
InactiveUS7530630B2Minimizing varianceCurtain accessoriesShutters/ movable grillesEngineeringSpring steel
A roller blind system for a sliding roof includes a guide rail and a spring steel band that is guided in the guide rail in sections. The spring steel band has an end that is situated outside the guide rail, and which contracts to a coil. A roller blind is attached to the spring steel band, and a compensation spring is provided.
Owner:ROOF SYST GERMANY
Stereo demultiplexer
InactiveUS7046811B1Enhanced audio signalImprove signal-to-noise ratioBroadcast information characterisationAmplitude demodulation by homodyne/synchrodyne circuitsSidebandNoise reduction
For the noise reduction of an audio signal generated by stereo-demultiplexing of a frequency-modulated stereo multiplex signal (SFM(t)) a filtering within the signal path to generate the stereo difference signal (ud(t)) is performed that determines a weight with which the upper sideband (ud,u(t)) and the lower sideband (ud,l(t)) of the amplitude modulated stereo-difference signal are weighted with different weighting factors that are dependent on the frequency.
Owner:SONY DEUT GMBH
Sheet conveying device
ActiveUS7210678B2Reduce and absorb loadAvoid contactOther printing apparatusArticle feedersImage formationEngineering
A sheet conveying device includes a metal feed roller driven by a drive source and a plastic pinch roller pressed against the feed roller. A sheet is held between the feed roller and the pinch roller, to convey the sheet to a recording unit. An elastic ring having a high wear resistance is fitted over a part of an outer surface of the pinch roller in a width direction of the pinch roller. Accordingly, the elastic deformation of the elastic ring reduces or absorbs load (impact) that causes a rear end of the sheet to flick or spring and the improper sheet feeding, when the rear end of the sheet passes through a nip portion between the feed roller and the pinch roller. Thus, variances in the sheet feeding amounts and the poor image formation are prevented.
Owner:BROTHER KOGYO KK
Managing time-substitutable electricity usage using dynamic controls
InactiveUS9563924B2Minimizing varianceMaximize profitabilityProgramme controlMarket predictionsSmart gridEngineering
A predictive-control approach allows an electricity provider to monitor and proactively manage peak and off-peak residential intra-day electricity usage in an emerging smart energy grid using time-dependent dynamic pricing incentives. The daily load is modeled as time-shifted, but cost-differentiated and substitutable, copies of the continuously-consumed electricity resource, and a consumer-choice prediction model is constructed to forecast the corresponding intra-day shares of total daily load according to this model. This is embedded within an optimization framework for managing the daily electricity usage. A series of transformations are employed, including the reformulation-linearization technique (RLT) to obtain a Mixed-Integer Programming (MIP) model representation of the resulting nonlinear optimization problem. In addition, various regulatory and pricing constraints are incorporated in conjunction with the specified profit and capacity utilization objectives.
Owner:INT BUSINESS MASCH CORP
Method for analyzing manufacturing data
InactiveUS7174281B2Minimizing varianceForecastingComputation using non-denominational number representationManufacturing dataIntegrated circuit
A method of manufacturing, e.g., integrated circuits, and of managing a manufacturing process. Product unit (circuit) variation data is collected from clustered product units (wafer sites). Collected data is grouped according to a selected manufacturing parameter. Each group is normalized for the selected manufacturing parameter. Normalized groups are combined. Normalized process data is checked for variances and the data is regrouped and renormalized until variances are no longer found. Each identified variance is correlated with a likely source. Then, each said likely source is addressed, e.g., a tool is adjusted or replaced, to minimize variances.
Owner:BELL SEMICON LLC
Influence analyzing apparatus for analyzing influence of combustibles
ActiveUS20180073724A1Minimizing varianceFuel supply regulationSteam generation heating methodsPower stationProcess engineering
A apparatus may extract temperature for each region of a feed water and steam system of a thermoelectric power plant with respect to a combustible combination including one or more combustibles, extract one or more vectors for each region from the temperatures extracted for each region, generate one or more combustible clusters, each cluster including one or more combustible combinations having similar properties from the extracted vectors, and extract a characteristic component of a combustible combination that increases or decreases a boiler performance index from among one or more combustible combinations included in the one or more combustible clusters.
Owner:DOOSAN HEAVY IND & CONSTR CO LTD
Adaptive soft-output detector for magnetic tape read channels
InactiveUS8743498B2Minimizing varianceRecord information storageManufacture of flux-sensitive headsMagnetic tapeEngineering
In one embodiment, a data storage system includes a tape channel for reading data from a magnetic tape medium to produce a signal, a noise whitening filter positioned subsequent to the tape channel adapted for receiving the signal, wherein the noise whitening filter is adapted for minimizing variance of its output signal, a soft detector adapted for receiving output from the noise whitening filter, the soft detector adapted for calculating first soft information about each bit of the signal and sending the first soft information to a soft decoder, and the soft decoder positioned subsequent to the soft detector, the soft decoder being adapted for calculating second soft information about each bit of the signal and sending the second soft information to the soft detector. Other systems, methods, and computer program products are described according to more embodiments.
Owner:INT BUSINESS MASCH CORP
Method and system for reducing interferences due to handshake tones
InactiveUS7764752B2Overcome problemsEnhanced advantageMultiple-port networksError preventionEngineeringCustomer-premises equipment
A method and system of the present inventions reduces both near-end crosstalk (NEXT) and far-end crosstalk (FEXT) interferences due to handshake tones into upstream and downstream neighboring services, both at the customer premises equipment (CPE) and at the central office (CO), when handshake is experienced. An embodiment of the present inventions is directed to significantly reduce the NEXT and / or FEXT interferences due to handshake tones. For example, NEXT and / or FEXT interferences due to G.994.1 handshake tones, identified as, bins 7 and 9 for the Upstream channel and bins 12, 14 and 64 for the Downstream channel may be reduced. An embodiment of the present inventions provides an algorithm that may be used for both NEXT and FEXT Handshake Interferences reduction at the CO and at the CPE. In addition, the algorithm may operate in the time domain and in the frequency domain. Frequency domain algorithm offers two options, both versions taking advantage of the high correlation time of the Handshake tone signals.
Owner:IKANOS COMMUNICATIONS
Apparatus and method for determining signal quality in a geolocation system
ActiveUS20100123627A1Minimizing varianceRelieve pressureDirection finders using radio wavesPosition fixationSignal qualityGeolocation
In a geolocation system for determining a geolocation of a target emitter, a method for determining the geolocation. The method comprises receiving a signal transmitted from the target emitter at each one of a plurality of sensors; determining whether signals received at n sensors, from among the plurality of sensors, satisfy one or more threshold values related to a condition of the received signals; if signals received at n sensors satisfy the threshold value, commanding m of the n sensors to transmit the signal received thereat or information related to the signal received thereat to a processor; at the processor, determining time difference estimates for the m received signals and determining the geolocation of the target emitter from the time difference estimates.
Owner:DRS SIGNAL SOLUTIONS
Adaptive soft-output detector for magnetic tape read channels
InactiveUS8743500B2Noise minimizationMinimizing varianceSignal processing for reducing noiseRecord information storageMagnetic tapeEngineering
In one embodiment, a data storage system includes a tape channel for reading data from a tape to produce a signal, an adaptive noise whitening filter adapted for receiving the signal, the noise whitening filter being adapted for minimizing variance of noise affecting the signal output from the noise whitening filter, a soft DMAX detector adapted for receiving the signal from the noise whitening filter, the soft detector adapted for calculating first soft information about each bit of the signal and sending the first soft information to a soft decoder, and the soft decoder positioned subsequent to the soft detector, the soft decoder being adapted for calculating second soft information about each bit of the signal and sending the second soft information to the soft DMAX detector, wherein one or more noise whitening coefficients used in the noise whitening filter are updated using a noise whitening filter coefficient updater.
Owner:INT BUSINESS MASCH CORP
Method and system for aligning windows to extract peak feature from a voice signal
ActiveUS20070192102A1Easy to updateMinimizing varianceDigital computer detailsProtective foundationArtificial intelligenceSelf adaptive
Owner:SAMSUNG ELECTRONICS CO LTD
Adaptive soft-output detector for magnetic tape read channels
InactiveUS20130335845A1Minimizing variance of noiseNoise minimizationSignal processing for reducing noiseRecord information storageMagnetic tapeEngineering
In one embodiment, a data storage system includes a tape channel for reading data from a tape to produce a signal, an adaptive noise whitening filter adapted for receiving the signal, the noise whitening filter being adapted for minimizing variance of noise affecting the signal output from the noise whitening filter, a soft DMAX detector adapted for receiving the signal from the noise whitening filter, the soft detector adapted for calculating first soft information about each bit of the signal and sending the first soft information to a soft decoder, and the soft decoder positioned subsequent to the soft detector, the soft decoder being adapted for calculating second soft information about each bit of the signal and sending the second soft information to the soft DMAX detector, wherein one or more noise whitening coefficients used in the noise whitening filter are updated using a noise whitening filter coefficient updater.
Owner:IBM CORP
Optical distortion calibration for electro-optical sensors
ActiveUS7920982B2Eliminates calibrationEfficient and accurate calibrationTelevision system detailsPhotometry using reference valueNonlinear distortionElectro-optical sensor
Optical distortion calibration for an Electro-Optical sensor in a chamber eliminates calibration of the mirror controller and allows for calibration while the target is in motion across the FOV thus providing a more efficient and accurate calibration. A target pattern is projected through sensor optics with line of sight motion across the sensor FOV to generate a sequence of frames. Knowing that the true distances between the same targets remain constant with line of sight motion across the sensor's FOV, coefficients of a function F representative of the non-linear distortion in the sensor optics are fit from observed target positions in a subset of frames to true line of sight so that distances between targets are preserved as the pattern moves across the FOV. The coefficients are stored as calibration terms with the sensor.
Owner:RAYTHEON CO
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