MITSUBISHI ELECTRIC RESEARCH LABORATORIES, INC. Patent applications |
Patent application number | Title | Published |
20160105029 | System and Method for Operating an Electric Power System with Distributed Generation and Demand Responsive Resources Based on Distribution Locational Marginal Prices - An iterative framework to optimally integrate various distributed generations (DG) and demand responsive resources (DRR) within a distribution system into transmission market clearing. The concept of distribution aggregated demand and distribution aggregated utility represent a summed distribution level information in consuming electricity that encompasses preferences of the individual DGs and DRRs. This distribution level preference, which is derived had on unbalanced three-phase AC optimal power flow, is bid into the transmission level for optimal market clearing. When the aggregated preferences cannot be obtained, an iterative method enables the transmission and distribution networks to exchange price and demand information. A competitive equilibrium is reached when the method converges to a mice-demand coupling point. | 04-14-2016 |
20150349949 | System and Method for Determining Distance Between Signals - A pairwise distance computation transforms first and second signals using an absolute distance preserving mapping, such that a k-norm distance between the first mapped signal and the second mapped signal represents an absolute distance between the first signal and the second signal. The absolute distance preserving mapping maps an element of a first or a second signal to a vector having a size equal to a cardinality of the finite alphabet of the signals. The absolute distance preserving mapping determines a position N of the element in an ordered sequence of symbols of the finite alphabet and determines values for each of N elements of the vector as a fractional power 1/k of positive increments in the finite alphabet. The values for subsequent elements of the vector are determined as zero. | 12-03-2015 |
20150348537 | Source Signal Separation by Discriminatively-Trained Non-Negative Matrix Factorization - A method estimates source signals from a mixture of source signals by first training an analysis model and a reconstruction model using training data. The analysis model is applied to the mixture of source signals to obtain an analysis representation of the mixture of source signals, and the reconstruction model is applied to the analysis representation to obtain an estimate of the source signals, wherein the analysis model utilizes an analysis linear basis representation, and the reconstruction model utilizes a reconstruction linear basis representation. | 12-03-2015 |
20150348235 | DISTRIBUTED PATH PLANNING FOR MOBILE SENSORS - A method plans paths of a set of mobile sensors with changeable positions and orientations in an environment. Each sensor includes a processor, an imaging system and a communication system. A desired resolution of coverage of the environment is defined, and an achieved resolution of the coverage is initialized. For each time instant and each sensor, an image of the environment is acquired using the imaging system. The achieved resolution is updated according to the image. The sensor is moved to a next position and orientation based on the achieved resolution and the desired resolution. Then, local information of the sensor is distributed to other sensors using the communication system to optimize a coverage of the environment. | 12-03-2015 |
20150325015 | Method for Generating Representations Polylines Using Piecewise Fitted Geometric Primitives - A method for generating a representation of a polyline formed by a sequence of points determines an overcomplete set of geometric primitives that redundantly fit overlapping sections of the polyline. The overcomplete fitting is performed such that the set includes one or more types of geometric primitives, each fitted to a section of the polyline formed by a subset of the sequence of points. The method determines a local cost of each geometric primitive based on a combination of a fitting error and an encoding cost of the geometric primitive, and determines a join cost of each successive pair of adjacent primitives. Next, the method determines a combination of the geometric primitives forming a connected path along a length of the polyline such that a sum of the local costs of the geometric primitives and the join costs of adjacent primitives in the combination is optimized. | 11-12-2015 |
20150324659 | METHOD FOR DETECTING OBJECTS IN STEREO IMAGES - A method detects an object in a pair of stereo images acquired of a scene, by first generating a cost volume from the pair of stereo images, wherein the cost volume includes matching costs for a range of disparity values, for each pixel the sterao images, between the stereo images in the pair. Feature vectors are determined from sub-images in the cost volume using a feature function of the disparity values with a minimal accumulated cost within regions inside the sub-images. Then, a classifier is appled to the feature vectors to detect whether the sub-image includes the object. | 11-12-2015 |
20150324656 | Method and System for Tracking People in Indoor Environments using a Visible Light Camera and a Low-Frame-Rate Infrared Sensor - A method and system tracks objects in an environment by acquiring a first sequence of images of the environment with a visible-light camera having a first frame rate and a second sequence of images with a thermal infrared sensor having a second frame rate. The second frame rate is substantially lower than the first frame rate. The objects are tracked in the first sequence of images to obtain tracks. Warm regions in the second sequence of images are detected to obtain detections. The tracks and the detections are aligned spatially and temporally, and verified to determine whether the tracks and detections coincide after the aligning. | 11-12-2015 |
20150317808 | Method for Graph Based Processing of Signals - A method processes a signal by first constructing a graph from the signal, and then determining a graph matrix from the graph and the signal. A Krylov-based subspace is determined based on the graph matrix and the signal. A filter for the Krylov subspace is determined. The filter transforms the signal to produce a filtered signal, which is output. | 11-05-2015 |
20150317788 | Method for Registering Deformable Images Using Random Markov Fields - A method registers a source image with a target image, wherein the images are deformable, by first measuring dissimilarity between the source image and the target image. The dissimilarity minimized using a discrete energy function. At multiple scales, multi-scale Markov random field registration is applied to the source and target images to determine a deformation vector field. Then, the target image is warped according to the deformation field vector to obtain a warped target mage registered to the source image. | 11-05-2015 |
20150296324 | Method and Apparatus for Interacting Between Equipment and Mobile Devices - A method interacts between equipment and a mobile device by first selecting, using the mobile device, the equipment. A communication link is established between the mobile device and the equipment. In response, data from the equipment is received in the mobile device then the equipment and mobile device interact according to the data, wherein the equipment is within a visible range of the mobile device. | 10-15-2015 |
20150281838 | Method and System for Detecting Events in an Acoustic Signal Subject to Cyclo-Stationary Noise - A method detects events in an accoustic signal subject to cyclostationary background noise by first segmenting the signal into cycles. Features with a fixed dimension are derived from the cycles, such that the timing of the features is relative to a cycle time. The features are normalized using an estimate of the cyclostationary background noise. Then, after the normalizing, a classifier is applied to the features to detect the events. | 10-01-2015 |
20150280966 | Optical Channel Data Unit Switch with Distributed Control - An optical channel data unit (ODU) switch includes a set of two or more client cards, a set of two or more line cards, and a set of two or more switch cards. Each switch card is connected to all client cards, all line cards, and all other switch cards, and each client card, line card and switch card includes control logic for managing an operation of the ODU switch in a distributed manner. | 10-01-2015 |
20150277444 | Time-Varying Extremum Seeking for Controlling Vapor Compression Systems - A method for controlling a vapor compression system determines a value of a metric of performance of the vapor compression system using a previous value of an estimated parameter and a previous value of a control signal determined for a previous time step of the control. The values of the estimated parameter represent a relationship between values of the control signal and values of the metric of performance. A current value of the estimated parameter is determined based on the previous value of the estimated parameter and an error between the determined value of the metric of performance and a measured value of the metric of performance. Next, a current value of the control signal is determined based on the current value of the estimated parameter. | 10-01-2015 |
20150277436 | Oscillator-Based Path Planning for Machining of a Pocket Shape in Workpiece - A method determines a path of a tool machining a pocket shape in a workpiece. The pocket shape is defined by a closed curve in an x-y plane. The method determines positions and velocities of a motion of an oscillator having an energy defined by a function that is positive within a boundary of the pocket shape and equals zero on the boundary of the pocket shape. The method determines coordinates of the path of the tool based on corresponding pairs of position and velocity values of the motion, wherein a position value of each pair represents an x coordinate of the path of the tool in the x-y plane, and a velocity value of each pair represents a y coordinate of the path of the tool in the x-y plane. | 10-01-2015 |
20150277416 | Method for Anomaly Detection in Discrete Manufacturing Processes - A method detects an anomaly in a discrete manufacturing process (DMP) by first acquiring signals from the DMP. Events are extracted from the signals as a sequence. Then, it is determined whether the sequence is inconsistent with a normal behavior as represented by a log-based ordering relationship table. If true, then an alarm is signaled. | 10-01-2015 |
20150269708 | Method for Generating High-Resolution Images using Regression Patterns - A method generates a high-resolution (HR) image from a low-resolution (LR) image using regression functions. During a training stage, training HR images are downsampled to LR images. A signature is determined for each LR-HR patch pair based on a local ternary pattern (LTP). The signature is a low dimensional descriptor used as an abstraction of the patch pair features. Then, patch pairs with the same signature are clustered, and a regression function which maps the LR patches to the HR patches is determined. In some cases patch pairs of similar signatures can be combined for learning and a single regression function determined, thus decreasing the number of required regression functions. During actual upscaling, LR patches of an input image are similarly processed to obtain the signatures and from the regression functions. The LR patches can then be upscaled using the training regression functions. | 09-24-2015 |
20150264383 | Block Copy Modes for Image and Video Coding - A method decodes blocks in pictures of a video in an encoded bitstream by storing previously decoded blocks in a buffer. The previously decoded blocks are displaced less than a predetermined range relative to a current block being decoded. Cached blocks are maintained in a cache. The cached blocks include a set of best matching previously decoded blocks that are displaced greater than the predetermined range relative to the current block. The bitstream is parsed to obtain a prediction indicator that determines whether the current block is predicted from the previously decoded blocks in the buffer or the cached blocks in the cache. Based on the prediction indicator, a prediction residual block is generated, and in a summation process, the prediction residual block is added to a reconstructed residual block to form a decoded block as output. | 09-17-2015 |
20150264345 | Method for Coding Videos and Pictures Using Independent Uniform Prediction Mode - A method for decoding a bitstream, including compressed pictures of a video, wherein each picture includes one or more slices, wherein each slice includes one or more blocks of pixels, and each pixel has a value corresponding to a color, for each slice, first obtains a reduced number of colors corresponding to the slice, wherein each color is represented as a color triplet and the reduced number of colors is less than or equal to a number of colors in the slice. Then, for each block, a prediction mode is determined, wherein an independent uniform prediction mode is included in a candidate set of prediction modes. For each block, a predictor block is generated, wherein all values of the predictor block have a uniform value according to a color index when the prediction mode is set as the independent uniform prediction mode. Lastly, the predictor block is added to a reconstructed residue block to form a decoded block as output. | 09-17-2015 |
20150259007 | System and Method for Semi-Autonomous Driving of Vehicles - A method for a semi-autonomous driving of a vehicle with a steer-by-wire system having a steering wheel mechanically decoupled from vehicle wheels determines values for the steering angle and the wheels angle tracking a target value of the wheels angle received from a semi-autonomous driving planning (SADP) system. The method determines the values for the steering angle and the wheels angle subject to constraints, including a constraint on a motion of the vehicle wheels, a constraint on a motion of a steering wheel, a constraint on an actuation of the steering wheel and the vehicle wheels, and a constraint on a relative motion of the steering wheel with respect to the motion of the vehicle wheels. The control commands to the column motor and the rack motor are generated according to the values for the steering angle and the wheels angle. | 09-17-2015 |
20150254513 | Method for Extracting Low-Rank Descriptors from Images and Videos for Querying, Classification, and Object Detection - A method extracts a low-rank descriptor of a video acquired of a scene by first extracting a set of descriptors for each image in the video. The sets of descriptors for the video are aggregated to form a descriptor matrix. Iteratively, a low-rank descriptor matrix is determined from the descriptor matrix, as well as a selection matrix that associates each column in the descriptor matrix to a corresponding column in the low-rank descriptor matrix. The low-rank descriptor matrix is output upon convergence. | 09-10-2015 |
20150253749 | Method and Apparatus for Preconditioned Continuation Model Predictive Control - A method for a continuation model predictive control (CMPC) of a system determines at least a part of a preconditioner using an approximate coefficient function and determines a solution vector by solving a matrix equation of the CMPC with a coefficient matrix defined by an exact coefficient function at a current time step of a control using an iterative method with the preconditioner. The approximate coefficient function applied to a vector approximates a result of an application of the exact coefficient function to the vector. A control signal for controlling the system is generated using the solution vector. | 09-10-2015 |
20150253423 | System and Method for 3D SAR Imaging using Compressive Sensing with Multi-Platform, Multi-Baseline and Multi-PRF Data - A method generates a 3D synthetic aperture radar (SAR) image of an area by first acquiring multiple data sets from the area using one or more SAR systems, wherein each SAR system has one or more parallel baselines and multiple pulse repetition frequency (PRF), wherein the PRF for each baseline is different. The data sets are registered and aligned to produce aligned data sets. Then, a 3D compressive sensing reconstruction procedure is applied to the aligned data sets to generate the 3D image corresponding to the area. | 09-10-2015 |
20150241865 | Method and System for Computing Reference Signals for Machines with Redundant Positioning - A method computes reference signals for a machine with redundant positioning by first generating a reference trajectory according to an ordered list of points. Then, using a filter or by choosing the value of the reference at each sampling time, a reference trajectory for the slow subsystem is produced. Next, determine whether the reference trajectory and the slow subsystem reference trajectory violate feasibility constraints, and if true, slowing down the reference trajectory and repeating with the generation of the slow subsystem reference trajectory. The slow subsystem reference trajectory is sent, via a model predictive control block, to a slow positioning subsystem controller, and a combination of the slow subsystem reference trajectory and the reference trajectory is sent to a fast positioning subsystem controller. | 08-27-2015 |
20150236817 | Method and Apparatus for Detecting Symbols Received Wirelessly using Probabilistic Data Association with Uncertainty - A method detects symbols in a signal received via a wireless channel by generating a statistical model for each symbol, and determining contribution from all other symbols in the signal as an expected interference. The expected interference is subtracted from the signal to obtain an interference-free signal. Then, the symbol is inferred based on the statistical model and the interference-free signal. | 08-20-2015 |
20150234779 | Method for Solving Quadratic Programs for Convex Sets with Linear Equalities by an Alternating Direction Method of Multipliers with Optimized Step Sizes - A method solves a convex quadratic program (QP) for a convex set. Constrains of the QP include sets of linear equalities and linear inequalities. The solving uses an Alternating Direction Method of Multipliers (ADMM). Variables of the convex QP include a linear subspace constrained variable vector and a set constrained variable vector. The method solves the linear subspace constrained variable vector while keeping the set constrained variable vector fixed using an optimal step size and a Lagrangian multiplier, and solves the set of constrained variable vector while keeping linear subspace constrained variable vector fixed using the optimal step size and the Lagrangian multiplier. Then, the Lagrangian multiplier is updated. A feasible solution is outputted if a termination condition for the feasible solution is satisfied, and an infeasible solution is signaled if a termination condition for the satisfied for the infeasible solution is satisfied. Otherwise, the steps are repeated. | 08-20-2015 |
20150228275 | Statistical Voice Dialog System and Method - A method for processing a voice command using a statistical dialog model determines a belief state as a probability distribution over states organized in a hierarchy with a parent-child relationship of nodes representing the states. The belief state includes the hierarchy of state variables defining probabilities of each state to correspond to the voice command and a probability of a state of a child node in the hierarchy is conditioned on a probability of a state of a corresponding parent node. A system action is selected based on the belief state. | 08-13-2015 |
20150226781 | Method for Fault Location Analysis of Ungrounded Distribution Systems - A location of a fault in an ungrounded power distribution system is determined by identifying a faulty feeder section and a type of the fault using voltages and currents measured before and after the fault and selecting the location of the fault at the faulty feeder section by testing a relationship of a current over a voltage measured at boundaries of the faulty feeder section after the fault with different equivalent admittance matrices of the faulty feeder section determined for different candidate locations of the fault of the determined type. The fault is a short-circuit fault including one or combination of a single-phase-to-ground fault, a phase-to-phase fault, a double-phase-to-ground fault, a three-phase-to-ground fault, and a phase-to-phase-to-phase fault. | 08-13-2015 |
20150226780 | Locating Multi-Phase Faults in Ungrounded Power Distribution Systems - A method determines a location of a fault in a faulty feeder section of an ungrounded power distribution system based on a type of the fault and the type of the faulty line. The method determines, if the faulty line is the lateral and the fault is phase-to-phase or double-phase-to-ground fault, the fault at a first point on an un-faulty phase of the lateral where a fault current equals a load current. The method determines, if the faulty line is the lateral and the fault is the three-phase fault, the location of the fault at a point with a minimal difference between imaginary parts of equivalent fault impedances. The method determines, if the faulty line is the mainline, the location of the fault at a point partitioning the faulty segment on two sub-segments with a ratio of lengths determined based on the voltages at the buses of the faulty segment. | 08-13-2015 |
20150212033 | Proximity Sensor Detecting Metallic and Non-Metallic Objects - A method determines a type of an object in a proximity to a resonant structure having a resonant frequency as a metallic object if the object changes a phase of a power signal reflected by the resonant structure at frequencies below and above the resonant frequency. Otherwise, the method determines the type of the object as a non-metallic object. | 07-30-2015 |
20150211896 | Frequency-Domain Multi-Element Capacitive Proximity Sensor Array Based on a Bandstop Filter Design - A proximity sensor detects an object. The sensor includes a set of two or more sensing elements. Each sensing elements includes a bandstop filter for selecting a different notch resonant frequency for the element. The notch resonant frequencies are isolated from each other. A change in transmission around each notch frequency is measured detect to the object. | 07-30-2015 |
20150206015 | Method for Estimating Free Space using a Camera System - A method estimates free space near a moving object from a sequence of images in a video acquired of a scene by a camera system arranged on the moving object by First constructing a one-dimensional graph, wherein each node corresponds to a column of pixels in the image. Features are determined in the image, and an energy function is constructed on the graph based on the features. Using dynamic programming, the energy function is maximized to obtain the free space. | 07-23-2015 |
20150205283 | Method for Generating Trajectory for Numerical Control Process - A method for generating a trajectory based on an input trajectory formed by points representing spatial coordinates for a numerically controlled (NC) process determines a plurality of sequences of the points and determines, for each sequence, local costs of each point in the input trajectory. Each sequence is formed by removing a unique combination of points from the input trajectory and the local cost of a point for a sequence is determined based on a spatial arrangement of the point with respect to at least some of points in the sequence. For each sequence, a sum of corresponding local costs of each point in the input trajectory is determines and the trajectory is determined based on an optimal sequence with an optimal value of the sum of the local costs. | 07-23-2015 |
20150200694 | Detecting Narrow Band Interference in Wireless Networks using Spectral Analysis - A method detects narrow band interference in wireless networks by first thresholding each block of samples to produce thresholded samples. The samples are normalized frequency magnitudes obtained from a spectrum of a wireless signal in a channel. Each block of the thresholded samples is summed to produce a thresholded value for each block. Then, thresholded values are autocorrelated to determine whether a bandwidth of the wireless signal is consistent with narrow band interference. | 07-16-2015 |
20150199606 | System and Method for Optimal Power Flow Analysis - A method determines a power flow of a power grid by optimizing an objective function representing an operation of the power grid using a spatial branch and bound (BB) framework for determining iteratively upper and lower bounds of the objective function. During the optimization, the lower bounds are determined using a semi-definite programming (SDP) relaxation of an optimal power flow (OPF) problem. | 07-16-2015 |
20150199573 | Global Scene Descriptors for Matching Manhattan Scenes using Edge Maps Associated with Vanishing Points - A method constructs a descriptor for an image of a scene, wherein the descriptor is associated with a vanishing point in the image by first quantizing an angular region around the vanishing point into a preset number of angular quantization bins, and a centroid of each angular quantization bin indicates a direction of the angular quantization bin. For each angular quantization bin, a sum of magnitudes of pixel gradients for pixels in the image at which a direction of the pixel gradient is aligned with the direction of the angular quantization bin is determined, wherein the steps are performed in a processor. | 07-16-2015 |
20150199457 | System and Method for Planning a Radiation Therapy Treatment - A method for planning a radiation therapy treatment of a body represented by a volume of voxels determines a radiation dose matrix representing a spatial distribution of a radiation dose of beams of radiation irradiating the volume with homogeneous stopping power. The beams are collimated and are shifted copies of each other at each depth of the volume, and the spatial distribution is determined by calculating cumulative beam-axial doses in a single matrix-matrix multiplication and redistributing the cumulative beam-axial doses to all voxels in the volume using a convolution. Next, a set of correcting operations is applied to the radiation dose matrix to produce a cumulative voxel radiation dose of the volume. Each correcting operation is linear, independent from another correcting operation and has a transform. | 07-16-2015 |
20150198713 | Method and System for Through-the-Wall Imaging using Compressive Sensing and MIMO Antenna Arrays - A method reconstructs a scene behind a wall by transmitting a signal through the wall into the scene. Parameters of the wall are estimated from a reflected signal. A model of a permittivity of the wall is generated using the parameters, and then the scene is reconstructed as an image from the reflected signal using the model and sparse recovery. | 07-16-2015 |
20150195081 | RECEIVER, TRANSMITTER, AND COMMUNICATION METHOD - A transmitter for transmitting a transmission signal subjected to modulation after error correction coding and a receiver including a phase compensation unit for receiving the transmission signal and performing demodulation therefor while maintaining synchronization thereof and an error correction decoding unit for performing decoding processing for received data that has been subjected to the demodulation. The transmitter transmits a signal formed of a plurality of pilot sequences as a part of the transmission signal, and the receiver has a phase slip estimation processing function for estimating the phase slip by the phase compensation unit by using the plurality of pilot sequences, and for estimating a phase difference component by the error correction decoding unit, to thereby correct a phase of the received data. | 07-09-2015 |
20150192635 | Method for Analyzing Discrete Traps in Semiconductor Devices - A method analyzes traps in a semiconductor device by determining a first-order derivative of a signal representing an operation of the semiconductor device over time to produce a signal rate change. The traps in the semiconductor device are analyzed based on lifetimes corresponding to peaks of the signal rate change. | 07-09-2015 |
20150177761 | Finite Time Power Control for Smart-Grid Distributed System - A distributed energy resource (DER) exchanges with each neighboring DER portions of the total demand for power accumulated by the DER and each neighboring DER and portions of a total capability of the network to generate the total power accumulated by the DER and each neighboring DER before each communication step. The DER updates the portion of the total demand for power and total capability accumulated by the DER using the portions of the total demand and the portions of the total capability received from the neighboring DERs. After the fixed number of communication steps, the DER accumulates the total demand for power and the total capability of the network and generates an amount of the power as a product of the total demand for the power and a ratio of a maximum capability of the DER to generate the power and the total capability of the network. | 06-25-2015 |
20150158121 | Control of Redundant Laser Processing Machines - A method controls an operation of a laser processing machine with redundant actuators including a first actuator and a second actuator. The method determines a feasible region for states of the first actuator and states of a reference trajectory of the first actuator defined by constraints of the laser processing machine, constraints on the reference trajectory and constraints on a range of motion of the second actuator. The method selects a subset of the feasible region, such that for any state of the first actuator and any state of the reference trajectory within the subset, there is an admissible control maintaining the state of the first actuator within the subset of the feasible region for admissible future states of the reference trajectory, and selects an admissible control action for controlling the operation such that the state of the first actuator remains in the subset of the feasible region. | 06-11-2015 |
20150156738 | Synchronized Multi-Sink Routing for Wireless Networks - A method transmitting packets in a wireless network including a node, a first data sink and a second data sink is disclosed. The method performs a synchronization of the node with the first data sink and the second data sink and transmits first data packets from the node to the first data sink at a first allocated time synchronized with the first data sink. Next, the method transmits second data packets from the node to the second data sink at a second allocated time synchronized with the second data sink. The first and the second data packets are transmitted without updating the synchronization. | 06-04-2015 |
20150156736 | Passive Synchronization in Wireless Networks - A method for synchronizing a node to a data sink determines a first time of receiving by the node a packet transmitted by a neighboring node and a second time of receiving by the data sink or a synchronized neighboring node the packet transmitted by the neighboring node. The node is synchronized to the data sink based on the difference between the first time and the second time. | 06-04-2015 |
20150154467 | Method for Extracting Planes from 3D Point Cloud Sensor Data - A method extracts planes from three-dimensional (3D) points by first partitioning the 3D points into disjoint regions. A graph of nodes and edges is then constructed, wherein the nodes represent the regions and the edges represent neighborhood relationships of the regions. Finally, agglomerative hierarchical clustering is applied to the graph to merge regions belonging to the same plane. | 06-04-2015 |
20150148924 | Feasible Tracking Control of Machine - A method for controlling an operation of a machine determines a feasible region for states of the machine and states of the reference trajectory defined by constraints of the machine, constraints on a reference trajectory and constraints on bounds of a tracking error and selects a subset of the feasible region, such that for any state of the machine and any state of the reference trajectory within the subset, there is an admissible control maintaining the state of the machine within the subset for all admissible future states of the reference trajectory determined by the model and the constraints of the reference trajectory. Next, an admissible control action for controlling the operation of the machine is selected such that the state of the machine remains in the subset for all admissible future states of the reference trajectory. | 05-28-2015 |
20150142205 | Actions Prediction for Hypothetical Driving Conditions - An information system includes a prediction engine for predicting an action based on a set of driving state parameters, and a driving history, and a simulation engine for generating a hypothetical scenario by simulating one or a combination of at least one driving state parameter and at least part of the driving history, such that the prediction engine predicts the action for the hypothetical scenario. | 05-21-2015 |
20150134778 | Method for Determining Hidden States of Systems using Privacy-Preserving Distributed Data Analytics - A method classifies data to determine hidden states of a system, by first randomly permuting the data and inserting client to generate private data. A server classifies the private data according to a hidden Markov model (HMM) to obtain permuted noisy estimates of the states and the chaff, which are returned to the client. The client then removes the chaff, inverts the permuted noisy estimates to obtain unpermuted noisy estimates of the states. | 05-14-2015 |
20150134244 | Method for Predicting Travel Destinations Based on Historical Data - The embodiments of the invention provide a method in a navigation system, for predicting travel destinations according to a history of destinations. A model used for the prediction incorporates a database of destinations, which can include favorite, i.e., most probable, destinations for a user. The model also uses a context that can include features such as a current time of day, day of week, current location, current direction, past location, weather, and so on. The model infers the destination and destination categories even when the destination is not known precisely. Specifically, a method predicts destinations during travel, based on feature vectors representing current states of the travel, probabilities of destinations and categories of the destinations using a predictive model representing previous states of the travel. A subset of the destinations and categories of the destinations with highest probabilities are output for user selection. | 05-14-2015 |
20150130953 | Method for Video Background Subtraction Using Factorized Matrix Completion - A method processes a video acquired of a scene by first aligning a group of video images using compressed domain motion information and then solving for a low rank component and a sparse component of the video. A homography map is computed from the motion information to determine image alignment parameters. The video images are then warped using the homography map to share a similar camera perspective. A Newton root step is followed to traverse separately Pareto curves of each low rank component and sparse component. The solving for the low rank component and the sparse component is repeated alternately until a termination condition is reached. Then, the low ranks component and the sparse component are outputted. The low rank component represents a background in the video, and the sparse component represents moving objects in the video. | 05-14-2015 |
20150124871 | Visual Perceptual Transform Coding of Images and Videos - A method decodes a picture that is encoded and represented by blocks in a bitstream, by first determining, from the bitstream, motion associated with the block. Using a model, the motion is mapped to indices indicating a subset of quantized transform coefficients to be decoded from the bitstream. Then, values are assigned and reinserted to the quantized transform coefficients not in the subset. | 05-07-2015 |
20150117512 | System and Method for Linearizing Power Amplifiers - A power encoder includes an amplitude-phase splitter for splitting an input signal into an envelope signal and a phase modulated signal, and a pre-distortion unit for distorting the envelope signal using a look-up table (LUT) to produce a distorted envelope signal. The power encoder also includes a digital converter for combining the distorted envelope signal with the phase modulated signal to produce a distorted input signal, a pulse width modulator (PWM) for modulating the distorted input signal according to the transformation function to produce a modulated signal, and a switch mode power amplifier for amplifying the modulated signal. The look-up table stores a non-linear mapping of a transformation function and a relationship between the distorted input signal and the modulated signal is non-linear. | 04-30-2015 |
20150115860 | Motion-Control System for Performing Different Tasks - A motion-control system for moving a mass according to different tasks includes at least one controllable actuator for performing the different tasks and an input module for receiving a specific task to perform. The system also includes a controller for controlling a performance of the specific task by the controllable actuator according to a specific control law and a tunable actuator having a tunable parameter of mechanical response, wherein the tunable actuator is mechanically arranged in the system, such that different values of the tunable parameter change dynamics of the system. An optimization module of the system jointly selects a value of the tunable parameter and the specific control law based on the specific task. | 04-30-2015 |
20150112897 | Method for Estimating Parameters of a Graph Spectral Filter Using Training Data - A method processes a signal represented as a graph by first determining a graph spectral transform based on the graph. In a spectral domain, parameters of a graph filter are estimated using a training data set of unenhanced and corresponding enhanced signals. The graph filter is derived based on the graph spectral transform and the estimated graph filter parameters. Then, the signal is processed using the graph filter to produce an output signal. The processing can enhance signals such as images b denoising or interpolating missing samples. | 04-23-2015 |
20150109053 | Method for Separating Multi-Component Signals - A method separates a multi-component signal by first estimating parameters of the signal. Then, using periodicity-based algebraic separation and energy-based demodulation, the signal is separated into components according to the parameters and constraints. Last, a Teager-Kaiser energy detector is applied to each component to provide a direct current signal for each component, and the constraint for each component used by the separating. | 04-23-2015 |
20150088422 | Method and System for Dynamically Adapting user Interfaces in Vehicle Navigation Systems to Minimize Interaction Complexity - A method adapts a user interface of a vehicle navigation system. Based on an input vector representing a current state related to the vehicle, probabilities of actions are predicted to achieve a next state using a predictive model representing previous states. Then, a subset of the actions with highest probabilities that minimize a complexity of interacting with the vehicle navigation system are displayed in the vehicle. | 03-26-2015 |
20150086158 | Multi-Mode Phase-Shifting Interference Device - A multi-mode interference (MMI) device includes a substrate layer, a core layer deposited on the substrate layer for propagating an optical signal, and a cladding layer deposited on the core layer for guiding the optical signal. The core layer includes a core section suitable for propagating multiple optical signals having different wavelengths. The core section includes a shifting segment for uniquely shifting phases of the multiple optical signals. The shifting segment includes at least one or a combination of sections having different effective refractive index, a tilted segment, a curved section, and waveguides with variations in width, thickness or effective refractive index. | 03-26-2015 |
20150085923 | Method for Improving Compression Efficiency of Distributed Source Coding Using Intra-Band Information - In a decoder, a desired image is estimated by first retrieving coding modes from an encoded side information image. For each bitplane in the encoded side information image, syndrome bits or parity bits are decoded to obtain an estimated bitplane of quantized transform coefficients of the desired image. A quantization and a transform are applied to a prediction residual obtained using the coding modes, wherein the decoding uses the quantized transform coefficients of the encoded side information image, and is based on previously decoded bitplanes in a causal neighborhood. The estimated bitplanes of quantized transform coefficients of the desired image are combined to produce combined bitplanes. Then, an inverse quantization, an inverse transform and a prediction based on the coding modes are applied to the combined bitplanes to recover the estimate of the desired image. | 03-26-2015 |
20150085920 | Distributed Source Coding using Prediction Modes Obtained from Side Information - In a decoder, a desired image is estimated by first retrieving coding modes from an encoded side information image. For each bitplane in the encoded side information image, syndrome bits or parity bits are decoded to obtain an estimated bitplane of quantized transform coefficients of the desired image. A quantization and a transform are applied to a prediction residual obtained using the coding modes, wherein the decoding uses the quantized transform coefficients of the encoded side information image. The estimated bitplanes of quantized transform coefficients of the desired image are combined to produce combined bitplanes. Then, an inverse quantization, an inverse transform and a prediction based on the coding modes are applied to the combined bitplanes to recover the estimate of the desired image. | 03-26-2015 |
20150085696 | Method for Discovering Neighboring Nodes in Wireless Networks - A method discovers neighboring nodes in a wireless network of nodes. The nodes include a set of concentrators acting as IPv6 routers and a set of sensor nodes acting as IPv6 hosts. The sensor nodes can also act as relay nodes. In each node, a 64-bit interface ID is configured using a 48-bit MAC address. In each node, a unique IPv6 link-local address is configured using the 64-bit interface ID. In each node, the neighboring nodes are discovered by transmitting unsolicited Neighbor Advertisement (NA) messages. A Router Advertisement (RA) messages is distributed from the concentrators to the sensor nodes meters by using the relay nodes. In each node, a unique IPv6 address is configured and registered at the concentrators by using the relay nodes. | 03-26-2015 |
20150085668 | Discovering Stable Routes in Wireless Networks - A method discovers routes for forwarding packets from source nodes (sources) to sink nodes (sinks) in a wireless network, wherein some neighboring sources act as relay nodes. Each source measures a rate of receiving control messages from each neighboring node. Then, the data packets are forwarded from a particular source to the sink via the neighboring nodes having a lowest rate. | 03-26-2015 |
20150081200 | Method for Determining Trajectory of Multi-Motor Control System Avoiding Obstacle - The optimization of cost function representing a movement of the mass by the multi-motor control system from an initial point to a final point is subject to non-convex constraints due to avoidance of a region of the obstacle located between the initial point and the final point. Hence, the method determines a union of convex regions connecting the initial point with the final point, such that each convex region does not intersect the region of the obstacle, a convex constraint for each convex region and a set of switching times when the trajectory crosses boundaries of the convex regions. The method optimizes the cost function by jointly updating the positions and the set of switching times to produce an optimal trajectory of the movement. The optimizing is subject to the set of convex constraints applied independently for each corresponding convex region. | 03-19-2015 |
20150068225 | System and Method for Controlling Temperature and Humidity in Multiple Spaces using Liquid Desiccant - A branch controller operates with a system for temperature and humidity control. The branch controller includes a fluid control system for controlling a flow of the liquid desiccant in an arrangement of channels forming a first path for exchanging the liquid desiccant between a liquid desiccant conditioning unit and at least a first space conditioning unit and a second path for directing the liquid desiccant received from the first space conditioning unit to a second space conditioning unit. The branch controller includes a processor for comparing operational conditions of the first space conditioning unit and the second space conditioning unit. The processor selects between the first path and the second path based on the comparison and commands the fluid control system to control the flow of the liquid desiccant according to the selected path. | 03-12-2015 |
20150051909 | PATTERN RECOGNITION APPARATUS AND PATTERN RECOGNITION METHOD - Provided is a pattern recognition apparatus for creating multiple systems and combining the multiple systems to improve the recognition performance, including a discriminative training unit for constructing model parameters of a second or subsequent system based on an output tendency of a previously-constructed model so as to be different from the output tendency of the previously-constructed model. Accordingly, when multiple systems are combined, the recognition performance can be improved without trials-and-errors. | 02-19-2015 |
20150049731 | Method for Coding OFDMA Data without Pilot Symbols - A wireless network includes a set of nodes. Each node includes a transmitter and a receiver. A block of data bits is converted to a block of data symbols. The block of data symbols is partitioning timewise into groups of data symbols. A set of subcarriers is assigned to each group of data symbols, and each group of data symbols is spread to a chip sequence using a coding block of spreading sequences, wherein the spreading sequences are based on types of the groups of data symbols. Then, after the spreading, the chips are transmitted as orthogonal frequency-division multiplexing (OFDM) data symbols on the assigned subcarriers. | 02-19-2015 |
20150046060 | Method and System for Adjusting Vehicle Settings - Settings in a vehicle are adjusted by first learning a predictive model of output vectors that correspond to input vectors of sensor data acquired from vehicle subsystems during training. Each input vector defines a known context associated with the vehicle. During later operation of the vehicle, additional input vectors are obtained from the subsystems, and the corresponding output vectors to adjust the settings are then determined using the predictive model. | 02-12-2015 |
20150030231 | Method for Data Segmentation using Laplacian Graphs - A method segments n-dimensional by first determining prior information from the data. A fidelity term is determined from the prior information, and the data are represented as a graph. A graph Laplacian is determined from the graph from the graph, and a Laplacian spectrum constraint is determined from the graph Laplacian. Then, an objective function is minimized according to the fidelity term and the Laplacian spectrum constraint to identify a segment of target points in the data. | 01-29-2015 |
20150027814 | Semi-Active Feedback Control of Elevator Rope Sway - A method controls an operation of an elevator system. The method receives an amplitude of a sway of an elevator rope and a velocity of the sway of the elevator rope determined during the operation of the elevator system. The method modifies a damping coefficient of a semi-active damper actuator connected to the elevator rope according to a function of the amplitude and the velocity of the sway. | 01-29-2015 |
20150021830 | Method and Apparatus for Printing 3D Objects Using Additive Manufacturing and Material Extruder with Translational and Rotational Axes - A 5D printer, which additively manufactures an object, includes an extruder that can move linearly along three orthogonal axes and rotationally around at least one of the axes with respect to the object while depositing a material. A gantry is movable along X, Y and Z axes, and a trunnion table movable about A and B axes is mounted on the gantry. A platen is mounted on the trunnion table, and the extruder deposits the material on the platen while moving the gantry and trunnion table. A model of the object is analyzed to produce a stress tensor for the object, and the depositing is according to the stress tensor. | 01-22-2015 |
20140376925 | Method and System for Modulating Optical Signals as High-Dimensional Lattice Constellation Points to Increase Tolerance to Noise - A method modulates data for optical communication by first encoding the data using a forward error correction (FEC) encoder to produce encoded data, which are encoded using a block encoder to produce block encoded data such that Hamming distances between code words that represent the block encoded data are increased. The block encoded data are mapped to produce mapped data such that Euclidian distances between the constellation points are increased. Then, the mapped data are modulated in a transmitter to a modulated signal for an optical channel. | 12-25-2014 |
20140358508 | Method for Optimizing HVAC Systems in Buildings Using Nonlinear Programming to Maximize Comfort for Occupants - A heating, ventilation and air-conditioning (HVAC) system for a building is optimized while maximizing a comfort of occupants and minimizing energy consumption. The building is modeled as a network of nodes and edges, wherein the nodes represent rooms, and the edges represent walls. Dynamics of temperatures and humidity in the rooms and the temperature of the walls and the building are modeled using differential equations and the network. The comfort of the occupants is modeled by a predicted mean vote (PMV). The minimizing is formulated as an optimal control problem, which is discretized using an integration technique to obtain a finite dimensional optimization problem. Then, the finite dimensional optimization problem is solved using sparse linear algebra until convergence. | 12-04-2014 |
20140343695 | MPC Controller Using Parallel Quadratic Programming - A method controls an operation of a machine using a model predictive control (MPC). The method determine, in response to receiving a state of the operation of the machine, a dual solution of a dual parametric problem of a parametric form of the MPC using a parallel quadratic programming (PQP) rescaling iteratively a candidate dual solution of the dual parametric problem. The coefficients of the dual parametric problem include data representing dynamics of the machine and constraints on the operation of the machine. A parameter of the dual parametric problem includes the state of the operation of the machine. The method determines a primal solution of a primal problem of the MPC using the dual solution of the dual parametric problem. | 11-20-2014 |
20140341463 | Method for Reconstructing 3D Lines from 2D Lines in an Image - A method for reconstructing—three-dimensional (3D) lines in a 3D world coordinate system from two-dimensional (2D) lines in a single image of scene detects and clusters the 2D lines using vanishing points. A constraint graph of vertices and edges is generated, wherein the vertices represent the 2D lines, and the edges represents constraints on the 2D lines, then identifying the 3D lines that satisfy the constraints and reconstructing the 3D lines using the identified constraints. | 11-20-2014 |
20140341421 | Method for Detecting Persons Using 1D Depths and 2D Texture - A method detects an object in a scene by first determining an active set of window positions from depth data. Specifically, the object can be a person. The depth data are acquired by a depth sensor. For each window position perform the following steps. Assign a window size based on the depth data. Select, a current window from the active set of window positions. Extract a joint feature from the depth data and texture data for the current window, wherein the texture data are acquired by a camera. Classify the joint feature to detect the object. The classifier is trained with joint training features extracted from training data including training depth data and training texture data acquired by the sensor and camera respectively. Finally, the active set of windows position is updated before processing the next current window. | 11-20-2014 |
20140337017 | Method for Converting Speech Using Sparsity Constraints - A method converts source speech to target speech by first mapping the source speech to sparse weights using compressive sensing technique, and the transforming, using transformation parameters, the sparse weights to the target speech. | 11-13-2014 |
20140333615 | Method For Reconstructing 3D Scenes From 2D Images - A method reconstructs at three-dimensional (3D) real-world scene from a single two-dimensional (2D) image by identifying junctions satisfying geometric constraint of the scene based on intersecting lines, vanishing points, and vanishing lines that are orthogonal to each other. Possible layouts of the scene are generated by sampling the 2D image according to the junctions. Then, an energy function is maximized to select an optimal layout from the possible layouts. The energy function use's a conditional random field (CRF) model to evaluate the possible layouts. | 11-13-2014 |
20140331059 | Method and System for Authenticating Biometric Data - A method for authenticating biometric data determines a first set of descriptors of a fingerprint. Each descriptor in the first set represents a region of the fingerprint that includes multiple minutiae. The method compares each descriptor in the first set of descriptors with each descriptor in a second set of descriptors to determine a number of matching descriptors and compares the number of matching descriptors with a threshold for authenticating the biometric data. | 11-06-2014 |
20140324211 | System and Method for Performing Undo and Redo Operations during Machining Simulation - A method associates a cell in the cADF with a machining instruction that changes a type of the cell or a type of a distance field in the cell in forming a composite surface of the workpiece to produce at least part of an association, and associates the distance field in the cell with the machining instruction changing the type of the distance field in forming the composite surface of the workpiece to produce at least part of the association. In response to receiving a command to undo a simulation of the machining to the intermediate machining instruction, a subset of cells and a subset of distance fields forming the composite surface of the workpiece at time of the simulation by the intermediate machining instruction are identified using the associate and the intermediate representation of the workpiece is determined using the subset of cells and the subset of distance fields. | 10-30-2014 |
20140314367 | Compound Optical Combiner - A compound optical combiner for combining multiple optical signals includes a set of combiners. The set of combiners includes at least one polarization combiner optically connected to at least one non-polarization combiner. The non-polarization combiner combines a first set of input signals while preserving a polarization of each input signal in the first set of signals. The polarization combiner combines a second set of input signals while converting the polarization of at least one input signal in the second set of signals. | 10-23-2014 |
20140309953 | Method for Locating of Single-Phase-to-Ground Faults of Ungrounded Power Distribution Systems - The method determines shunt caused residual voltages and fault caused residual voltages on the upstream bus and the downstream bus of the line segment within a faulty feeder section of a faulty feeder. The line segment is designated as a faulty line segment when a reference angle of a faulty phase is between a first angle of a difference between an angle of the fault caused residual voltage and an angle of the shunt caused residual voltage on the upstream bus and a second angle of a difference between an angle of the fault caused residual voltage and an angle of the shunt caused residual voltage on the downstream bus. The location of the fault is determined at a point on the faulty line segment with a difference between the angles of the fault and the shunt caused residual voltages in phase with the reference angle. | 10-16-2014 |
20140307780 | Method for Video Coding Using Blocks Partitioned According to Edge Orientations - A bitstream corresponding to an encoded video is decoded. The encoded video includes a sequence of frames, and each frame is partitioned into encoded blocks. For each encoded block, an edge mode index is decoded based on an edge mode codeword and a prediction mode. The edge mode index indicates a subset of predetermined partitions selected from a partition library according to the prediction mode. The encoded block is partitioned based on the edge mode index to produce two or more block partitions. To each block partition, a coefficient rearrangement, an inverse transform and an inverse quantization is applied to produce a processed block partition. The processed block partitions are then combined into a decoded block for a video. | 10-16-2014 |
20140304383 | Method for Clustering Devices in Machine-to-Machine Networks to Minimize Collisions - Nodes in a network are clustered by first determining, in each node, a cluster head capability (CHC). The CHC is broadcasting, directly or indirectly, until all nodes have received the CHCs. Each node nominates, one or more candidate cluster heads based on the CHCs, and then, in each node, at least one cluster head is selected from the candidate cluster head nodes based on maximal CHCs. | 10-09-2014 |
20140300600 | Method for Detecting 3D Geometric Boundaries in Images of Scenes Subject to Varying Lighting - Three-dimensional (3D) geometric boundaries are detected in images of a scene that undergoes varying lighting conditions caused by light sources in different positions, from a set of input images of the scene illuminated by at least two different lighting conditions. The images are aligned, e.g., acquired by a stationary camera, so that pixels at the same location in all of the input images correspond to the same point in the scene. For each location, a patch of corresponding pixels centered at the location is extracted from each input image. For each location, a confidence value that there is a 3D geometric boundary at the location is determined. | 10-09-2014 |
20140300599 | Method for Factorizing Images of a Scene into Basis Images - A set of nonnegative lighting basis images representing a scene illuminated by a set of stationary light sources is recovered from a set of input images of the scene that were acquired by a stationary camera. Each image is illuminated by a combination of the light sources, and at least two images in the set are illuminated by different combinations. The set of input images is decomposed into the nonnegative lighting basis images and a set of indicator coefficients, wherein each lighting basis image corresponds to an appearance of the scene illuminated by one of the light sources, and wherein each indicator coefficient indicates a contribution of one of the light sources to one of the input images. | 10-09-2014 |
20140292581 | Method and System for Determining Locations of Smartkeys - A location of a smartkey is determined by first determining coordinates of a set of candidate vertices of an array of receive antennas at a receiver based on maximal magnetic field voltages in the receive antennas due transmitting a radio signal (RF) by the smartkey. A set of candidate locations of the transmitter is determined based on the coordinate of the set of vertices. A set of final candidate locations is determined based on a predetermined threshold of the voltages. The final candidate locations are then combined to determine the location of the smartkey. | 10-02-2014 |
20140290288 | System and Method for Controlling Vapor Compression Systems - A method controls a vapor compression system including a variable speed compressor. A desired discharge temperature of the compressor is determined using a mapping between values of the discharge temperature of the compressor and values of speed of the compressor and outdoor air temperature. A transition function for transitioning a current discharge temperature to the desired discharge temperature is determined, such that the transition function is continuous and a rate of change of the transition function is limited. Next, a valve of the vapor compression system is controlled such that the discharge temperature is transitioned to the desired discharge temperature based on the transition function. | 10-02-2014 |
20140285264 | Reconfigurable Output Matching Network for Multiple Power Mode Power Amplifiers - An impedance matching network for a radio frequency (RF) amplifier includes multiple stages connected to each other in a first to last order. A first stage produces an RE output signal, and a last stage receives an RF input signal. Each stage includes a first inductor connected to produce an output signal, a second inductor connected to receive an input signal from a next stage, a capacitor connected between the first and second inductors and a ground. In addition, each stage other than the first stage further includes a first switch to by-pass the first and second inductors, a second switch connected between the first and second inductors and the ground, and a controller for controlling, the first and second switches to select a particular power level of a set of power levels. | 09-25-2014 |
20140281572 | Privacy Preserving Statistical Analysis on Distributed Databases - Aggregate statistics are securely determined on private data by first sampling independent first and second data at one or more clients to obtain sampled data, wherein a sampling parameter substantially smaller than a length of the data. The sampled data are encrypted to obtain encrypted data, which are then combined. The combined encrypted data are randomized to obtain randomized data. At an authorized third-party processor, a joint distribution of the first and second data is estimated from the randomized encrypted data, such that a differential privacy requirement of the first and second is satisfied. | 09-18-2014 |
20140277861 | System and Method for Optimizing Energy Consumption in Railway Systems with Energy Storage Devices - A system and method optimizes energy consumption in a railway system including a set of trains, a set of energy storage devices, and a set of substations connected to a grid by first optimizing control parameters controlling at least part of the energy consumption of the railway system to produce optimized control parameters. The optimized control parameters minimize, over multiple time steps, a combination of total power provided by the grid to satisfy a power demand of the railway system, a state-of-charge of each energy storage device, power supplied to charge the energy storage device and power supplied by the energy storage device. The optimizing is subject to constraints on operations of the railway system over multiple time steps. The constraints include a complementarity constraint. A command is generated to control the energy consumption of the railway system based on the optimized control parameters. | 09-18-2014 |
20140277858 | SYSTEM AND METHOD FOR OPTIMIZING ENERGY CONSUMPTION IN RAILWAY SYSTEMS - A method optimizes energy consumption in a railway system including a set of trains and a set of substations connected to a grid. The method optimizes control parameters controlling at least part of the energy consumption of the railway system to produce optimized control parameters minimizing a total power provided by the grid to satisfy a power demand of the railway system. The optimizing is subject to constraints on operations of the railway system, which include as complementarity constraint. Next, the method generates a command to control the energy consumption of the railway system based on the optimized control parameters. | 09-18-2014 |
20140270635 | Multi-Mode Interference Device - A multi-mode interference (MMI) device includes a substrate layer, a core layer grown on the substrate layer for propagating an optical signal, and a cladding layer grown on the core layer for guiding the optical signal. The MMI device also includes a non-uniform pattern of patches forming a non-uniform refractive index distribution within the MMI device. | 09-18-2014 |
20140266869 | Method and System for Random Steerable Sar Using Compressive Sensing - A synthetic aperture radar image is generated by directing randomly a beam of transmitted pulses at an area using a steerable array of antennas, wherein the area is uniformly by the transmitted pulses while the array of antennas moves along a path. A sparse reconstruction procedure is applied to received signals from the area due to reflecting the transmitted pulses to generate the image corresponding to the area. The radar system can operate in either sliding spotlight mode, or scan mode. The area can be of an arbitrary shape, and a resolution of the image can be increased. | 09-18-2014 |
20140266324 | High Electron Mobility Transistor with Multiple Channels - A device includes a source and a drain for transmitting and receiving an electronic charge. The device also includes a first stack and a second stack for providing at least part of a conduction path between the source and the drain, wherein the first stack includes a first gallium nitride (GaN) layer of a first polarity, and the second stack includes a second gallium nitride (GaN) layer of the second polarity, and wherein the first polarity is different from the second polarity. At least one gate operatively connected to at least the first stack for controlling a conduction of the electronic charge, such that, during an operation of the device, the conduction path includes a first two-dimensional electron gas (2DEG) channel formed in the first GaN layer and a second 2DEG channel formed in the second GaN layer. | 09-18-2014 |
20140257755 | Method for Reconstructing Signals from Phase-Only Measurements - A signal is reconstructed by first producing complex-valued measurements of the signal by measuring the signal using a linear complex measurement system, and retaining only a phase of the complex-valued measurements. Then, the signal is reconstructed from the phase of the complex measurements within a scaling factor using a sparse reconstruction method. | 09-11-2014 |
20140257727 | Method for Angle-Preserving Phase Embeddings - One or more signal are embedded by producing complex-valued measurements of the signal by measuring the signal using a complex measurement matrix. Then, only a phase of the complex-valued measurements are retinas, such that angles of the signal are preserved. Subsequently, the phases, which can be quantized and stored in a database, can be searched to locate similar signals based only on their phase angles. | 09-11-2014 |
20140254863 | Method for Detecting and Tracking Objects in Image Sequences of Scenes Acquired by a Stationary Camera - In a sequence of images of a scene acquired by a stationary camera, objects are detected and tracked by determining a first set of candidate foreground regions according to a background model. A second set of candidate foreground regions is determined. according to a set of foreground models. Then, candidate foreground regions in the first set and the second set are validated to produce a final set of foreground regions in the image that include the objects. | 09-11-2014 |
20140251734 | System and Method for Controlling Semi-Active Actuators Arranged to Minimize Vibration in Elevator Systems - A method controls a set of semi-active actuators arranged in an elevator system represented with a model of a virtual elevator system having a single virtual semi-active actuator arranged to compensate a virtual disturbance proportional to a sum of disturbances from the set of disturbances. The method determines the virtual disturbance during an operation of the elevator car using a motion profile of position of the elevator car during the operation and a disturbance profile of the virtual disturbance, and determines amplitude of a virtual force of the virtual semi-active actuator using the model and the virtual disturbance. A gain of a controller for controlling the set of semi-active actuators is adjusted based on the amplitude of the virtual force and a reference force of the virtual semi-active actuator. | 09-11-2014 |
20140244214 | Method for Localizing Sources of Signals in Reverberant Environments Using Sparse Optimization - Source signals emitted in a reverberant environment from different locations are processed by first receiving input signals corresponding to the source signals by a set of sensors. Then, a sparsity-based support estimation is applied to the input signals according to a reverberation model to produce estimates of the source signals and locations of a set of sources emitting the source signals. | 08-28-2014 |
20140244187 | Method for Detecting Islanding with Periodically Transmitted Sequence of Unsynchronized Signals - Conditions in a power grid are detected by sampling a voltage in the grid. A normal condition hypothesis is modeled as a sinusoid, and a transient condition hypothesis is modeled as a sum of damped sinusoids. The samples are used to construct a probability density function. A likelihood ratio based on the pdf and the hypotheses is compared to a threshold to determine whether the condition is normal or transient. | 08-28-2014 |
20140244059 | Method for Optimizing Power Flows in Electric Power Networks - Power flow in an electric power network is optimized during multiple time periods of operation of the electric power network by solving an optimization problem represented by an objective function by first initializing variables and constraints of a branch and bound (BB) tree, wherein nodes in the BB tree represent feasible regions of the optimization problem. Upper and lower bounds on the objective function are solved using the BB tree. A lowest upper bound and a lowest upper bound are updated. If difference between the lowest lower bound and the lowest upper bound is less than a threshold, the power flow is outputted based on the lowest lower bound and the lowest upper bound. | 08-28-2014 |
20140241471 | Method and System for Communicating Data Wirelessly Using Probabilistic Data Association - A signal received via a fading channel is decoded in radio frequency receiver by first demodulating the signal to a baseband signal, and serial to parallel converting the baseband signal to a precoded signal. Then, a channel matrix is estimated from the precoded signal, and symbols are detected in the precoded signal using the channel matrix. The decoding uses probabilistic data association. The detecting initializes a probability distribution for each symbol, and selects an ordering in which to update the probability distributions. The probability distribution for each symbol are updated according to the ordering, until a termination condition is reached, and then demapped and parallel to serial converted to estimate a sequence of bits used to generate the signal. | 08-28-2014 |
20140240163 | Method and System for Compressive Array Processing - Signals received by an array of sensing elements are processed by first positioning the sensing elements in a uniform grid of L locations, wherein each location to include or not to include a sensing element is selected during a design phase. The sensing elements are selected and grouped into subsets, wherein each subset contains one or more sensing elements, and each sensing element is a member of one or more subsets. The signals in each subset are linearly combined to produce a combined signal, which is then sampled to form an output channel, which can detect objects. | 08-28-2014 |
20140236507 | Method for Determining Power Consumption of Loads in Ungrounded Power Distribution Systems - A method determines power consumption of a load in a feeder section of an ungrounded power distribution system. Borders of the feeder section are defined by an importing device connecting the feeder section to an upstream feeder section, and by at least one exporting device connecting the feeder section with a downstream feeder section. A power consumption of each load is represented as a product of a scaling factor and a base power defined by a load profile of the load. A power flow of the feeder section is solved using the power consumptions of the loads to produce an active power for each phase of the importing device. A target active power for each phase of the importing device is determined using measurements at the importing device, and the scaling factors are updated based on a difference between the active power and the target active power. | 08-21-2014 |
20140236506 | Method for Detecting Power Theft in a Power Distribution System - A method detects power theft in a branch of a distribution system by distinguishing between technical losses that are inevitable during the course of normal operation of the system, and non-technical losses that can be attributed to power theft. The method assumes a specific circuit corresponding to that branch, collects data for energy consumed and currents at regular intervals by means of a smart or traditional power meter, estimates the likely resistances of the lines connecting the consumption points to the distribution transformed by means of least squares regression, and uses the estimated resistances to predict technical losses in future time intervals. By comparing the total power losses measured during future intervals with the estimates of the technical losses, the amount of non-technical losses can be estimated, and theft can be signaled when this amount is unusually high. | 08-21-2014 |
20140236503 | Method for Locating Faults in Ungrounded Power Distribution Systems - A method determines a location of a single-phase-to-ground fault in an ungrounded power distribution system. The method detects the faulty phase of the distribution system having the fault and compares a difference between an angle of a voltage and an angle of a current measured at a root of a faulty feeder and boundaries of each section of the faulty feeder to determine a faulty section of a faulty feeder having the fault. A line segment of the faulty section is tested for a change of a sign of a voltage on the faulty phase in the faulty section to determine a faulty line segment. The location of the fault is determined based on a distance from a terminal bus of the faulty line segment to a location along the faulty line segment having a value the voltage on the faulty phase equals zero. | 08-21-2014 |
20140232591 | System and Method for Multiple Spotlight Synthetic Radar Imaging Using Random Beam Steering - A spotlight synthetic aperture radar (SAR) image is generated by directing randomly a beam of transmitted pulses at a set of two or more areas using a steerable array of antennas. Each area is illuminated by an approximately equal number of the transmitted pulses. Then, a reconstruction procedure is applied independently to received signals from each area due to reflecting the transmitted pulses to generate the image corresponding to the set of areas. | 08-21-2014 |
20140219552 | Denoising of Images with Nonstationary Noise - An input image is denoised by first constructing a pixel-wise noise variance map from the input image. The noise has spatially varying variances. The input image is partitioned into patches using the noise variance map. An intermediate image is determined from the patches. Collaborative filtering is applied to each patch in the intermediate image using the noise variance map to produce filtered patches. Then, the filtered patches are projected to an output image. | 08-07-2014 |
20140219547 | Method for Increasing Resolutions of Depth Images - A resolution of a low resolution depth image is increased by applying joint geodesic upsampling to a high resolution image to obtain a geodesic distance map. Depths in the low resolution depth image are interpolated using the geodesic distance map to obtain a high resolution depth image. The high resolution image can be a gray scale or color image, or a binary boundary map. The low resolution depth image can be acquired by any type of depth sensor. | 08-07-2014 |
20140219330 | Method and System for Encoding Collections of Images and Videos - An input segment of an input video is encoded by first extracting and storing, for each segment of previously encoded videos, a set of reference features. The set of input features are matched with each set of the reference features to produce a set of scores. The reference segments having largest scores are selected to produce a first reduced set of reference segments. A rate-distortion cost for each reference segment in the first reduced set of reference segments is estimated. The reference segments in the first reduced set of reference segments is selected to produce a second reduced set of reference segments. Then, the input segment are encoded based on second reduced set of reference segments. | 08-07-2014 |
20140214348 | Method for Estimating a State of Charge of Batteries - A method estimates a state-of-charge (SoC) of a battery by constructing a set of two or more battery models. Each battery model is associated with an adaptive SOC estimator. A set of intermediate SOCs is estimated using the models and the associate adaptive SoC estimators. Then, the set of intermediate SoCs are fused to obtain a final SoC of the battery. | 07-31-2014 |
20140210418 | Method for Estimating State of Charge for Lithium-Ion Batteries - A state of charge (SoC) a lithium-ion (Li+) battery is estimated at a time instant by first constructing a model of the Li+ battery based on a single particle operation. The model describes a relationship between the SoC, a charge current, a discharge current, and an output voltage. Using a nonlinear optimization, a function expressing a relationship between the SoC and an open circuit voltage is determined. The relationship is based on off-line measurements of the charge current, the discharge current, and the open-circuit voltage. Then, the SoC and parameters of the model are estimated concurrently, wherein the SoC and the parameters are based on the model, the function, and on-line measurements of the charge current, the discharge current, and the output voltage. | 07-31-2014 |
20140204759 | Load Balanced Routing for Low Power and Lossy Networks - A node includes a receiver for receiving a first packet from a first node at a first time and a second packet from a second node at a second time, a processor for determining the first time and the second time and for comparing the first time with the second time to produce a ratio of workloads of the first node and the second node, and a transmitter for transmitting packets to the first and the second nodes based on the ratio. | 07-24-2014 |
20140201121 | Method for Predicting Future Travel Time Using Geospatial Inference - Future travel times of a target vehicle traveling on a route from a starting point to a destination are predicted by first acquiring, by a probe vehicle, real-time probe data to alternative links from the starting point to the destination. Then, the future travel time for each link is predicted using a set of regression functions. | 07-17-2014 |
20140197691 | Wireless Energy Transfer for Misaligned Resonators - A system for transferring energy wirelessly includes a source for generating a circular polarized field in response to receiving the energy and a sink strongly coupled to the source for receiving the energy wirelessly via a resonant coupling of the field. | 07-17-2014 |
20140192866 | Data Remapping for Predictive Video Coding - Specifically, a method decodes a picture. The picture is encoded and represented by blocks in a bitstream. For each block, a remap flag is obtained from the bit-stream. The block is either a remapped reconstructed block or a non-remapped reconstructed block. Either the non-mapped reconstructed block or an inverse remapped reconstructed block is output according to the remap flag. The remapped reconstructed block maximizes a similarity with the neighboring blocks, as compared to the similarity of the non-mapped reconstructed block and the neighboring blocks, by applying point operations to the remapped reconstructed block. | 07-10-2014 |
20140177384 | Pairwise Grouping of Joint Sparsity Models for Sensing Array Processing - A scene is reconstructed by transmitting pulses into a scene from an array of transmitters so that only one pulse is transmitted by one transmitter at any one time. The one pulse is reflection by the scene and received as a set of signals. Each signal is sampled and decomposed to produce frequency coefficients stacked in a set of linear systems modeling a reflectivity of the scene. Then, a reconstruction method is applied to the set of linear systems. The reconstruction method solves each linear system separately to obtain corresponding solutions, which are shared and combined to reconstruct the scene. | 06-26-2014 |
20140172144 | System and Method for Determining Surface Defects - A method determines a defect on a surface of an object. A symmetric representation of at least part of the object is generated and a pair of unmatched areas between the surface of the object and a surface of the symmetric representation is determined. Next, the defect on the surface of the object is determined based on the pair of unmatched areas. | 06-19-2014 |
20140169451 | Perceptually Coding Images and Videos - Blocks in pixel images are template matched to select candidate blocks and weights according to a structural similarity and a perceptual distortion of the blocks. The perceptual distortion is a function of a just-noticeable-distortion (JND). A filter outputs a prediction residual between the block and the candidate blocks. The prediction residual is transformed and quantized to produce a quantized prediction residual using the JND. The matching and quantizing is optimized jointly using the perceptual distortion. Then, the quantized prediction residual and the weights are entropy encoded into a bit-stream for later decoding. | 06-19-2014 |
20140153742 | Method and System for Reducing Interference and Noise in Speech Signals - Interference in an audio signal is reduced by estimating a target signal using beam-forming in a direction of the signal source. A set of estimates of interference is determined by using a microphone array filtering matrix to block the target signal in the audio signal. A set of filters is optimized by minimizing an objective function measuring a mismatch between the set of estimates of interference and the estimate of the target signal. The minimizing uses a sparse regularization of coefficients of the set of filters. The set of estimates of interference are filtered using the set of filters after the optimizing. Then, the estimate of interference after the optimizing is subtracted from the target signal. | 06-05-2014 |
20140147031 | Disparity Estimation for Misaligned Stereo Image Pairs - A disparity vector for a pixel in a right image corresponding to a pixel in a left image in a pair of stereo images is determined. The disparity vector is based on a horizontal disparity and a vertical disparity and the pair of stereo images is unrectified. First, a set of candidate horizontal disparities is determined. For each candidate horizontal disparity, a cost associated with a particular horizontal disparity and corresponding vertical disparities is determined. The vertical disparity associated with a first optimal cost is assigned to each candidate horizontal disparity, so that the candidate horizontal disparity and the vertical disparity yield a candidate disparity vector. Lastly, the candidate disparity vector with a second optimal cost is selected as the disparity vector of the pixel in the right image. | 05-29-2014 |
20140137260 | Privacy Preserving Statistical Analysis for Distributed Databases - Aggregate statistics are determined by first randomizing independently data X and Y to obtain randomized data {circumflex over (X)} and Ŷ. The first randomizing preserves the privacy of the data X and Y. Then, the randomized data {circumflex over (X)} and Ŷ is randomized secondly to obtain randomized data {tilde over (X)} and {tilde over (Y)} for a server, and helper information T | 05-15-2014 |
20140136088 | Method for Predicting Travel Times Using Autoregressive Models - Future travel times along links are predicted using training and prediction phases. During training, seasonal intervals, a seasonal component of the training inflows are learned. The seasonal component is subtracted from the training inflows to obtain training deviations from the training inflows to yield statistics, which along with the seasonal components form a model of traffic flow on the link. During prediction, current travel times on the link are collected for current seasonal intervals to determine current inflows. A most recent travel time is subtracted from a most recent inflow to obtain a current deviation. For a future time, a predicted deviation is estimated using the statistics. The seasonal component is added to the predicted deviation to obtain a predicted inflow from which the future travel time is predicted. | 05-15-2014 |
20140133848 | Adaptively Coding and Modulating Signals Transmitted Via Nonlinear Channels - An adaptive coding scheme for nonlinear channels improves reliability and an efficiency in digital communication networks. The method monitors channel statistics to analyze an extrinsic information transfer chart of the channels. The channel statistics are fed back to the transmitter to adapt forward error correction coding. A parametric analysis method uses a Gaussian mixture model. The statistical information feedback can adapt an ARQ sheme by adding a weighted received signal to the original coded signals to reduce nonlinear distortion. Trellis shaping, can make the transmitting signal preferable for nonlinear channels. | 05-15-2014 |
20140133535 | Signal Classification for Adaptive Signal Detection - Signal received in a wireless network are detected by arranging samples of the signal in a set of windows. For each window, estimating interference, an average signal, noise and interference ratio (SINR), and a channel. For each window, also classifying a type of a process of a set of processes of a receiver. Then, selecting the process for each windows according to the type to detect the signal in the window. | 05-15-2014 |
20140124300 | Method and System for Controlling Sway of Ropes in Elevator Systems by Modulating Tension on the Ropes - A method controls an operation of an elevator system using a control law to stabilize a state of the elevator system using a tension of an elevator rope. A derivative of a Lyapunov function along dynamics of the elevator system controlled by the control law is negative definite. The control law is a function of amplitude of a sway of the elevator rope and a velocity of the sway of the elevator rope. The method determines the amplitude of the sway of the elevator rope and the velocity of the sway of the elevator rope during the operation, and determines a magnitude of the tension of the elevator rope based on the control law, and the amplitude and the velocity of the sway of the elevator rope. | 05-08-2014 |
20140114463 | Determining Trajectories of Redundant Actuators Jointly Tracking Reference Trajectory - A method determines trajectories of redundant actuators of a machine including a first actuator and a second actuator. The method determines a first trajectory of the first actuator tracking a reference trajectory with an error tolerance, wherein the error tolerance is a function of a constraint of the second actuator, and determines a second trajectory of the second actuator based on a difference between the reference trajectory and the first trajectory. | 04-24-2014 |
20140098837 | Antenna Selection with Frequency-Hopped Sounding Reference Signals - A transceiver has a first antenna and a second antenna for transmitting alternatively a frequency-hopped sounding reference signal (SRS) over a sub-band of a bandwidth at a time. The transceiver includes a determination unit for determining whether a number of sub-bands in the bandwidth is odd or even, a transmitter for transmitting the SRS continuously from the first antenna, if the number of sub-bands is even, and a receiver for receiving a response to the transmitting. | 04-10-2014 |
20140092210 | Method and System for Motion Field Backward Warping Using Neighboring Blocks in Videos - Videos of a scene are processed for view synthesis. The videos are acquired by corresponding cameras arranged so that a view of each camera overlaps with the view of at least one other camera. For each current block, motion or disparity vector is obtained from neighboring blocks. A depth block is based on a corresponding reference depth image and the motion or disparity vector. A prediction block is generated based on the depth block using backward warping of a motion field. Then, predictive coding for the current block using the prediction block. Backward mapping can also be performed in the spatial domain. | 04-03-2014 |
20140092208 | Method and System for Backward 3D-View Synthesis Prediction using Neighboring Blocks - Videos of a scene are processed for view synthesis. The videos are acquired by corresponding cameras arranged so that a view of each camera overlaps with the view of at least one other camera. For each current block, motion or disparity vector is obtained from neighboring blocks. A depth block is based on a corresponding reference depth image and the motion or disparity vector. A prediction block is generated based on the depth block using backward warping. Then, predictive coding for the current block using the prediction block. | 04-03-2014 |
20130299283 | System and Method for Controlling Semi-Active Actuators Arranged to Minimize Vibration in Elevator Systems - A method controls a set of semi-active actuators arranged in an elevator system to minimize a vibration of an elevator car. The elevator system is represented with a model of a virtual elevator system having a single virtual semi-active actuator arranged to compensate a virtual disturbance. The virtual disturbance is determined using a motion profile of position of the elevator car during the operation and a disturbance profile of the virtual disturbance. A state of the elevator system is determined using the model of the virtual elevator system, the virtual disturbance and a signal indicative of a horizontal acceleration of the elevator car during the operation. Each actuator of the set of semi-active actuators is controlled based on the state of the elevator system and according to a control policy of the virtual semi-active actuator. | 11-14-2013 |
20130262648 | Location Based Data Delivery Schedulers - Packets are transmitted by a server to mobile nodes in a coverage area of a wireless network using a coverage and reliability map, which indicates qualities and reliabilities of links between the server and the nodes. When a new packet is received in the server, the server transmits the packet if a current load of the packets including the new packet is less than a peak load constraint. Otherwise, the new packet is delayed for one time slot. Packets are transmitted according to associated priorities. | 10-03-2013 |
20130253870 | Self-Calibrating Single Track Absolute Rotary Encoder - A rotary encoder includes a single read-head and a circular scale. The encoder is self-calibrated by acquiring calibration samples with the read-head for rotational angles of the circular scale, and estimating spatial frequency and spatial distortion parameters of the encoder from the calibration samples. | 09-26-2013 |
20130140908 | Wireless Energy Transfer with Metamaterials - Embodiments of the invention disclose a system configured to exchange energy wirelessly. The system includes a structure configured to exchange the energy wirelessly via a coupling of evanescent waves, wherein the structure is electromagnetic (EM) and non-radiative, and wherein the structure generates an EM near-field in response to receiving the energy; and a metamaterial arranged within the EM near-field such that the coupling is enhanced. | 06-06-2013 |
20130121405 | Method for Coding Signals with Universal Quantized Embeddings - Distances between data are encoded by per a random projection, followed by dithering and scaling, with a fixed scaling for all values. The resulting dithered and scaled projection is quantized using a non-monotonic 1-bit quantizer to form a vector of bits representing the signal. The distance between signals can be approximately calculated from the corresponding vectors of bits by computing the hamming distance of the two vectors of bits. The computation is approximately correct up to a specific distance, determined by the scaling, and not beyond that | 05-16-2013 |
20130107667 | Method and System for Reconstructing Scenes Using Virtual Arrays of Transducers and Joint Sparsity Models | 05-02-2013 |
20120230396 | Method for Embedding Decoding Information in Quantized Transform Coefficients - A method decodes a picture in a form of a bit-stream. The picture is encoded and represented by vectors of coefficients. Each coefficient is in a quantized form. A specific coefficient is selected in each vector based on a scan order of the vector. Then, a set of modes is inferred based on characteristics of the specific coefficient. Subsequently, the bit-stream is decoded according to the set of modes. | 09-13-2012 |
20110295786 | BELIEF PROPAGATION PROCESSOR - A processor includes a first memory module for storing a first set of storage values each representing a respective input, and a second memory module for storing a second set of storage values in analog form. An analog module is coupled to the first and the second memory modules. The analog module is configured to, in each operation cycle of at least one iteration, update at least some of the second set of storage values based on the first and the second sets of storage values. An output module is for generating a set of outputs from at least some of the second set of storage values. | 12-01-2011 |
20100226415 | Mapping for MIMO Communication Apparatus - A method, MIMO communication device and electronic storage medium for mapping symbols during a duration of each plural consecutive frames of each of a plurality of first data streams ( | 09-09-2010 |
20080267528 | Method for Retargeting Images - A method for content-aware image retargeting generates an energy image from a source image according to an energy function. From the energy image, one or more seams are determined according to a minimizing function such that each seam has a minimal energy. Each seam is applied to the source image to obtain a target image that preserves content and a rectangular shape of the source image. | 10-30-2008 |