Patents by Inventor Rajan Bhattacharyya

Rajan Bhattacharyya has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 10092753
    Abstract: Described is a system for enhancing memories during sleep. The system detects, via at least one sensor, brain activity of a user as the user learns a new episode pattern or recalls an episode pattern. The episode pattern is temporally compressed. A specific sleep stage is detected in the user. Upon detection of the specific sleep stage, the system automatically recreates the temporally compressed episode pattern by applying neural stimulation to the user to ensure the consolidation of the episode pattern in the user.
    Type: Grant
    Filed: August 3, 2016
    Date of Patent: October 9, 2018
    Assignee: HRL Laboratories, LLC
    Inventors: Michael D. Howard, Praveen K. Pilly, Matthias Ziegler, Matthew E. Phillips, Rajan Bhattacharyya
  • Publication number: 20180217603
    Abstract: A system and method is taught for data processing where an environment around the self-vehicle is encoded into ego centric and geocentric overlapping coordinate systems. The overlapping coordinate systems are then divided into adaptively sized grid cells according to characteristics of environments and the self-vehicle status. Each grid cell is defined with one of representative event patterns and risk values to the self-vehicle. The autonomous driving system is then operative to provide a real time assessment of the surrounding environment in response to the grid cell data. And temporal sequences of the grid cell data are stored in the episodic memory and recalled from it during driving.
    Type: Application
    Filed: January 31, 2017
    Publication date: August 2, 2018
    Inventors: HYUKSEONG KWON, YOUNGKWAN CHO, RAJAN BHATTACHARYYA
  • Publication number: 20180217595
    Abstract: A system and method is taught for data processing in an autonomous vehicle control system. Using information is acquired from the vehicle, network interface, and sensors mounted on the vehicle, the system can perceive situations around it with much less complexity in computation without losing crucial details, and then make navigation and control decisions. The system and method are operative to generate situation aware events, store them, and recall to predict situations for autonomous driving.
    Type: Application
    Filed: January 31, 2017
    Publication date: August 2, 2018
    Inventors: HYUKSEONG KWON, YOUNGKWAN CHO, RAJAN BHATTACHARYYA, MICHAEL J. DAILY
  • Publication number: 20180210939
    Abstract: Described is a system for an episodic memory used by an automated platform. The system acquires data from an episodic memory that comprises an event database, an event-sequence graph, and an episode list. Using the event-sequence graph, the system identifies a closest node to a current environment for the automated platform. Based on the closest node and using a hash function or key based on the hash function, the system retrieves from the event database an episode that corresponds to the closest node, the episode including a sequence of events. Behavior of the automated platform in the current environment is guided based on the data from the episodic memory.
    Type: Application
    Filed: January 25, 2018
    Publication date: July 26, 2018
    Inventors: Youngkwan Cho, Hyukseong Kwon, Rajan Bhattacharyya
  • Patent number: 9824607
    Abstract: A brain-machine interface for extracting user action intentions within a continuous asynchronous interactive environment is presented. A subliminal stimulus module generates contextually appropriate decision-related stimuli that are unobtrusive to a user. An altered perceptual experience module modifies a user's sensation of the interactive environment based on decision-related stimuli generated from the subliminal stimulus module. A brain monitoring module assesses the user's brain activity in response to the decision-related stimuli and to determine whether an action within the asynchronous interactive environment is intended by the user. Finally, an action is taken based on explicit user input, the user's brain activity in response to the decision-related stimuli, or a combination thereof.
    Type: Grant
    Filed: January 23, 2013
    Date of Patent: November 21, 2017
    Assignee: HRL Laboratories, LLC
    Inventors: Rajan Bhattacharyya, Ryan M. Uhlenbrock, David W. Payton
  • Publication number: 20170316318
    Abstract: Described is system for data classification using formal concept analysis (FCA). In a training phase, the system generates a FCA classification lattice, having a structure, using a set of training data. The set of training data comprises training presentations and classifications corresponding to the training presentations. In a classification phase, a set of test data having classes that are hierarchical in nature is classified using the structure of the FCA classification lattice.
    Type: Application
    Filed: July 23, 2015
    Publication date: November 2, 2017
    Inventors: Michael J. O'Brien, James Benvenuto, Rajan Bhattacharyya
  • Publication number: 20170316265
    Abstract: Described is a system for feature selection for formal concept analysis (FCA). A set of data points having features is separated into object classes. For each object class, the data points are convolved with a Gaussian function, resulting in a class distribution curve for each known object class. For each class distribution curve, a binary array is generated having ones on intervals of data values on which the class distribution curve is maximum with respect to all other class distribution curves, and zeroes elsewhere. For each object class, a binary class curve indicating for which interval a performance of the known object class exceeds all other known object classes is generated. The intervals are ranked with respect to a predetermined confidence threshold value. The ranking of the intervals is used to select which features to extract from the set of data points in FCA lattice construction.
    Type: Application
    Filed: May 10, 2016
    Publication date: November 2, 2017
    Inventors: Michael J. O'Brien, Kang-Yu Ni, James Benvenuto, Rajan Bhattacharyya
  • Publication number: 20170312519
    Abstract: Described is a system for the therapeutic modification of human behavior and, more specifically, a system for the transcranial control of procedural memory reconsolidation for the purposes of enhanced skill acquisition. During operation the system records a practice pattern. The practice pattern is a recording of a sensed brain activity from a sensor array when a subject is performing a skill. The practice pattern is converted to brain activity voxels and stored as both an uncompressed practice pattern and a compressed practice pattern.
    Type: Application
    Filed: October 27, 2016
    Publication date: November 2, 2017
    Inventors: Praveen K. Pilly, Michael D. Howard, Rajan Bhattacharyya
  • Patent number: 9646248
    Abstract: Described is system for extracting conceptual knowledge representation from neural system. The system extracts a first set of attributes to define a set of objects in a first domain. A first formal concept lattice is constructed comprising the set of objects and the first set of attributes from the first domain. A second set of attributes is extracted to define the set of objects in a second domain. A second formal concept lattice is constructed comprising the set of objects and the second set of attributes from the second domain. The first formal concept lattice is aligned with the second formal concept lattice to link the first set of attributes with the second set of attributes, wherein a combined lattice is generated. The combined lattice is used to relate the first domain to the second domain.
    Type: Grant
    Filed: September 17, 2014
    Date of Patent: May 9, 2017
    Assignee: HRL Laboratories, LLC
    Inventors: James Benvenuto, Rajan Bhattacharyya
  • Patent number: 9646056
    Abstract: Described is a system for rank-ordered and cognitive saliency schema-based object selection. The system receives a set of unnormalized probabilities corresponding to a set of objects competing for attentional selection in a current environment. Each unnormalized probability in the set of unnormalized probabilities is based on a likelihood estimation of encountering the corresponding object in the current environment. The set of objects is ranked based on a set of cognitive saliency values corresponding to the set of objects to generate a rank-ordered list of cognitive saliency values. The rank-ordered list of cognitive saliency values is analyzed to detect a schema of the current environment by which the set of objects is ranked. The schema is learned and stored along with a reward measure of the schema's utility. A maximum saliency object in the set of objects is selected based on the rank-ordered list of cognitive saliency values.
    Type: Grant
    Filed: July 17, 2014
    Date of Patent: May 9, 2017
    Assignee: HRL Laboratories, LLC
    Inventors: Matthew E. Phillips, Matthias Ziegler, Rajan Bhattacharyya
  • Patent number: 9552544
    Abstract: Described is a system for action selection based on a combination of neuromodulatory and prefrontal cortex models. The system inputs group attack probability estimates for multiple groups in a prefrontal cortex (PFC) input area of a model instance. The system encodes a dispersion of the group attack probability estimates in an anterior cingulated cortex (ACC) conflict input area of the model instance, resulting in activation of the ACC conflict input area. The activation is propagated to an action area and a neuromodulatory area of the model instance. An action strategy is selected in the action area. The action strategy is implemented, and a reward and a cost is generated for the implemented action strategy. An assessment of possible action strategies is updated based on the generated reward and cost. Each model instance modulates its subsequent action strategy selection based on the updated assessment of the possible action strategies.
    Type: Grant
    Filed: July 17, 2014
    Date of Patent: January 24, 2017
    Assignee: HRL Laboratories, LLC
    Inventors: Suhas E. Chelian, Rajan Bhattacharyya
  • Patent number: 9269027
    Abstract: Described is a system for optimizing rapid serial visual presentation (RSVP). A similarity metric is computed for RSVP images, and the images are sequenced according to the similarity metrics. The sequenced images are presented to a user, and neural signals are received to detect a P300 signal. A neural score for each image is computed, and the system is optimized to model the neural scores. The images are resequenced according a predictive model to output a sequence prediction which does not cause a false P300 signal. Additionally, the present invention describes computing a set of motion surprise maps from image chips. The image chips are labeled as static or moving and prepared into RSVP datasets. Neural signals are recorded in response to the RSVP datasets, and an EEG score is computed from the neural signals. Each image chip is then classified as containing or not containing an item of interest.
    Type: Grant
    Filed: February 20, 2014
    Date of Patent: February 23, 2016
    Assignee: HRL Laboratories, LLC
    Inventors: Deepak Khosla, David J. Huber, Rajan Bhattacharyya
  • Patent number: 9002762
    Abstract: Described is a system for adaptive memory recall. The system receives original input data, then divides the original input data into multiple data groups to serve as input for a network comprising a pattern separation layer and an autoassociative memory layer. The original input data is processed with a pattern separation component of the pattern separation layer, and each pattern separation component generates an increased-contrast version of the original input data it processes. The generated increased-contrast version of the original input data is combined with the original input data and stored in an autoassociative memory component of the autoassociative memory layer for each data group. New input data is received, and a parameter that controls processing in the pattern separation layer is modulated to determine an optimal parameter, which indicates that a memory recall between the stored data and the new set of input data is achieved.
    Type: Grant
    Filed: January 15, 2013
    Date of Patent: April 7, 2015
    Assignee: HRL Laboratories, LLC
    Inventors: Michael D. Howard, Rajan Bhattacharyya
  • Patent number: 8990139
    Abstract: Described is a system for flexible cognitive perception and selection. A pre-processing recognition module filters and tags input data from an environment resulting in a tagged percept. The tagged percept is stored and associated with a knowledge frame by a memory module based on shared descriptors, resulting in an activated knowledge frame. A utility rating is then supplied to each activated knowledge frame based on a set of reward values by an evaluation module. The activated knowledge frames are sorted, compared, and evaluated for a goodness of fit between the utility ratings of the activated knowledge frames and the input data by a hypothesis module. A best hypothesis for a current situation in the environment is determined based on a current highest rated activated knowledge frame.
    Type: Grant
    Filed: July 23, 2012
    Date of Patent: March 24, 2015
    Assignee: HRL Laboratories, LLC
    Inventors: Mike Howard, Rajan Bhattacharyya
  • Patent number: 8774517
    Abstract: The present invention relates to a system for identifying regions of interest in visual imagery. The system is configured to receive a series of consecutive frames representing a scene as captured from N sensors. The frames include at least a current frame and a previous frame. A surprise map can be generated based on features found in the current frame and the previous frame. The surprise map having a plurality of values corresponding to spatial locations within the scene. Based on the values, a surprise in the scene can be identified if a value in the surprise map exceeds a predetermined threshold.
    Type: Grant
    Filed: December 30, 2010
    Date of Patent: July 8, 2014
    Assignee: HRL Laboratories, LLC
    Inventors: Deepak Khosla, Rajan Bhattacharyya, Terrell N. Mundhenk, David J. Huber
  • Patent number: 8699767
    Abstract: Described is a system for optimizing rapid serial visual presentation (RSVP). A similarity metric is computed for RSVP images, and the images are sequenced according to the similarity metrics. The sequenced images are presented to a user, and neural signals are received to detect a P300 signal. A neural score for each image is computed, and the system is optimized to model the neural scores. The images are resequenced according a predictive model to output a sequence prediction which does not cause a false P300 signal. Additionally, the present invention describes computing a set of motion surprise maps from image chips. The image chips are labeled as static or moving and prepared into RSVP datasets. Neural signals are recorded in response to the RSVP datasets, and an EEG score is computed from the neural signals. Each image chip is then classified as containing or not containing an item of interest.
    Type: Grant
    Filed: December 21, 2010
    Date of Patent: April 15, 2014
    Assignee: HRL Laboratories, LLC
    Inventors: Deepak Khosla, David J. Huber, Rajan Bhattacharyya
  • Publication number: 20130325202
    Abstract: A driver state module for interfacing with a vehicle, with a surroundings vicinity of the vehicle and with a driver of the vehicle, the driver state module comprising: (i) a frame memory for storing representations of behaviors with related context; (ii) an evaluation system for ranking the frames based on goals and rewards; (iii) a working memory comprising a foreground sub-memory and a background sub-memory, the working memory for holding and sorting frames into foreground and background frames, and (iv) a recognition processor for identifying salient features relevant to a frame in the foreground memory ranked highest by the evaluation system.
    Type: Application
    Filed: June 1, 2012
    Publication date: December 5, 2013
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Michael D. HOWARD, Rajan BHATTACHARYYA, Michael J. DAILY
  • Patent number: 8406989
    Abstract: A method for adaptive obstacle avoidance for articulated redundant robots is disclosed. The method comprises acts of calculating an obstacle avoidance vector for each of a set of limbs in a robot arm, and then applying the obstacle avoidance vector to constrain the inverse model in a robot controller. The obstacle avoidance vector incorporates factors including: (1) a distance and direction of each of a set of obstacles to the limb; and (2) when the limb is part of a kinematic chain of limbs, contributions from the obstacle avoidance vectors of all peripheral limbs in the kinematic chain. The method of the present invention was designed for use with the DIRECT model robot controller, but the method is generally applicable to any of a variety of robot controllers known in the art.
    Type: Grant
    Filed: February 13, 2009
    Date of Patent: March 26, 2013
    Assignee: HRL Laboratories, LLC
    Inventors: Rajan Bhattacharyya, Narayan Srinivasa
  • Patent number: 8285052
    Abstract: Described is a system for ordering images. The system receives a plurality of images. Image features are extracted from each image. A set of all possible image pairs are generated for all images. A similarity metric with weights is generated between the images in each image pair in the set, with a net similarity metric thereafter generated by combining the similarity metrics. The images are then ordered according to the net similarity metrics to generate a computer-ordered set of images. The computer-ordered set of images is then displayed to the user, which allows the user to re-order the images to generate a user-ordered set of images. The weights are then optimized to minimize the distance between the computer-ordered set of images and the user-ordered set of images. The similarity metrics are then re-weighted, with the images thereafter being re-ordered according to the new metrics.
    Type: Grant
    Filed: December 15, 2009
    Date of Patent: October 9, 2012
    Assignee: HRL Laboratories, LLC
    Inventors: Rajan Bhattacharyya, Deepak Khosla, David J. Huber, Penn Tasinga
  • Patent number: 8204623
    Abstract: A planning approach for obstacle avoidance for a robot arm is disclosed. In particular, the invention relates to a planning approach for obstacle avoidance in complex environments for an articulated redundant robot arm which uses a set of via points surrounding an obstacle as an intermediary point between initial and target arm positions. Via points are generated using visual perception, and possible trajectories through the via points and to the target are rehearsed prior to execution of movement. The disclosed planning method solves the “local minima” problem in obstacle avoidance; a situation in which the obstacle avoidance vectors prevent the arm from making progress toward the target.
    Type: Grant
    Filed: October 13, 2009
    Date of Patent: June 19, 2012
    Assignee: HRL Laboratories, LLC
    Inventors: Rajan Bhattacharyya, Narayan Srinivasa