Patents Assigned to SRI International
  • Patent number: 11362232
    Abstract: A photodiode, such as a linear mode avalanche photodiode can be made free of excess noise via having a superlattice multiplication region that allows only one electrical current carrier type, such as an electron or a hole, to accumulate enough kinetic energy to impact ionize when biased, where the layers are lattice matched. A photodiode can be constructed with i) a lattice matched pair of a first semiconductor alloy and a second semiconductor alloy in a superlattice multiplication region, ii) an absorber region, and iii) a semiconductor substrate. A detector with multiple photodiodes can be made with these construction layers in order to have a cutoff wavelength varied anywhere from 1.7 to 4.9 ?m as well as a noise resulting from a dark current at a level such that an electromagnetic radiation signal with the desired minimum wavelength cutoff can be accurately sensed by the photodiode.
    Type: Grant
    Filed: May 24, 2019
    Date of Patent: June 14, 2022
    Assignee: SRI International
    Inventor: Winston K. Chan
  • Patent number: 11361470
    Abstract: A method, apparatus and system for visual localization includes extracting appearance features of an image, extracting semantic features of the image, fusing the extracted appearance features and semantic features, pooling and projecting the fused features into a semantic embedding space having been trained using fused appearance and semantic features of images having known locations, computing a similarity measure between the projected fused features and embedded, fused appearance and semantic features of images, and predicting a location of the image associated with the projected, fused features. An image can include at least one image from a plurality of modalities such as a Light Detection and Ranging image, a Radio Detection and Ranging image, or a 3D Computer Aided Design modeling image, and an image from a different sensor, such as an RGB image sensor, captured from a same geo-location, which is used to determine the semantic features of the multi-modal image.
    Type: Grant
    Filed: October 29, 2019
    Date of Patent: June 14, 2022
    Assignee: SRI International
    Inventors: Han-Pang Chiu, Zachary Seymour, Karan Sikka, Supun Samarasekera, Rakesh Kumar, Niluthpol Mithun
  • Patent number: 11348033
    Abstract: A system comprises one or more observation stations. Each observation station of the one or more observation stations comprises a corresponding set of one or more sensors. Additionally, the system comprises one or more physical machines that implement a computation engine configured to receive first observation data from the one or more observation stations. The computation engine may use the first observation data to train a machine learning system. The computation engine may subsequently use the trained machine learning system to provide feedback regarding an additional instance of the observation subject. The computation engine outputs the feedback.
    Type: Grant
    Filed: July 21, 2017
    Date of Patent: May 31, 2022
    Assignee: SRI International
    Inventors: Prasad Narasimha Akella, Bhaskar Ramamurthy, Manish Kothari, John Peter Marcotullio
  • Patent number: 11340875
    Abstract: A method, apparatus and system for enabling the searchable storage of sequential application programs includes normalizing the sequential application programs, canonicalizing the sequential application programs, determining a unique identifier for each of the sequential application programs, and storing the unique identifier for each of the sequential application programs. The stored, unique identifier for the canonicalized sequential application programs can then be searched to, for example, determine if a sequential application program is stored and/or to certify at least one of the stored, canonicalized sequential application programs.
    Type: Grant
    Filed: June 2, 2020
    Date of Patent: May 24, 2022
    Assignee: SRI International
    Inventors: Christopher Connolly, Maneesh Yadav, Patrick D. Lincoln
  • Patent number: 11337981
    Abstract: The disclosure generally relates to substituted purine analogs that are dual CLK2/CDK1 inhibitors or more potent and specific CLK inhibitors to target CLK2 and CDK1 kinases. These compounds may be useful in the treatment of germ-line mutations of the spliceosome leading to the development of cancers and other human disease. This abstract is intended as a scanning tool for purposes of searching in the particular art and is not intended to be limiting of the present invention.
    Type: Grant
    Filed: May 28, 2020
    Date of Patent: May 24, 2022
    Assignee: SRI International
    Inventors: Thomas R. Webb, Jaehyeon Park, Chandraiah Lagisetti
  • Publication number: 20220143093
    Abstract: An example genetically engineered effector cell comprises an exogenous polynucleotide sequence that includes a receptor element, an actuator element, and an effector element. The receptor element encodes a chimeric antigen receptor (CAR) comprising an extracellular antigen binding domain operably linked to a transmembrane domain, and an intracellular signaling domain, wherein the extracellular antigen binding domain recognizes an antigen on a surface of a Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2)-infected cell. The actuator element encodes a transcription factor binding site that upregulates synthesis of an antiviral protein. The effector element encodes the antiviral protein operably linked to a signal peptide, wherein, in response to the antigen binding domain of the CAR binding to the antigen of SARS-CoV-2-infected cell, the engineered effector cell is configured to activate and, to synthesize and secrete the antiviral protein.
    Type: Application
    Filed: January 27, 2022
    Publication date: May 12, 2022
    Applicant: SRI International
    Inventors: Parijat BHATNAGAR, Marvin A. SSEMADAALI
  • Publication number: 20220125280
    Abstract: An example apparatus includes a light source, first and second polarizers, an image sensor, a filter, and control circuitry. The light source outputs a light beam, and the first polarizer passes first polarized light from the output light beam and toward a sample. The image sensor collects light reflected from the sample responsive to the passed first polarized light. The second polarizer passes second polarized light from the reflected light and toward the image sensor. The filter selectively passes the reflected light in a visible light range and near infrared range (NIR) light range toward the image sensor. The control circuitry causes the first and second polarizers to adjust to different polarization angles, and collects the image data of the sample from the reflected light.
    Type: Application
    Filed: March 1, 2020
    Publication date: April 28, 2022
    Applicant: SRI International
    Inventors: Jenn-Kwei TYAN, Michael Raymond PIACENTINO
  • Patent number: 11313684
    Abstract: During GPS-denied/restricted navigation, images proximate a platform device are captured using a camera, and corresponding motion measurements of the platform device are captured using an IMU device. Features of a current frame of the images captured are extracted. Extracted features are matched and feature information between consecutive frames is tracked. The extracted features are compared to previously stored, geo-referenced visual features from a plurality of platform devices. If one of the extracted features does not match a geo-referenced visual feature, a pose is determined for the platform device using IMU measurements propagated from a previous pose and relative motion information between consecutive frames, which is determined using the tracked feature information.
    Type: Grant
    Filed: March 28, 2017
    Date of Patent: April 26, 2022
    Assignee: SRI International
    Inventors: Han-Pang Chiu, Supun Samarasekera, Rakesh Kumar, Mikhail Sizintsev, Xun Zhou, Philip Miller, Glenn Murray
  • Patent number: 11314614
    Abstract: A method, apparatus and system for providing security for a container network having a plurality of containers includes establishing a network stack for each of the plurality of containers of the container network, determining network and policy information from active containers, based on a set of pre-determined inter-container dependencies for the plurality of containers learned from the determined network and policy information, configuring container access in the container network to be limited to only containers of the plurality of containers that are relevant to a respective communication, and configuring inter-container traffic in the container network to be directed only from a source container into a destination container in a point-to-point manner such that exposure of the inter-container traffic to peer containers is prevented.
    Type: Grant
    Filed: December 17, 2020
    Date of Patent: April 26, 2022
    Assignee: SRI International
    Inventors: Phillip A. Porras, Vinod Yegneswaran, Jaehyun Nam, Seungwon Shin
  • Patent number: 11301703
    Abstract: A biometric access control system for controlling access to an environment based on an authorization status of a living subject is disclosed. In one example, a data source generates image data of a tissue region of the subject. A liveness measurement unit processes the image data to detect changes over at least one of time or spatial volume in one or more structural features of the tissue region and generates, based on the detected changes, a spoofing attack detection status indicating that the image data is from living biological tissue or that a spoofing attack is detected. A biometric identification unit processes at least a portion of the same image data generated by the data source to generate biometric information indicative of an identity of the subject. Responsive to the spoofing attack detection status and the biometric information, an authorization unit outputs an authorization status for the subject.
    Type: Grant
    Filed: March 21, 2018
    Date of Patent: April 12, 2022
    Assignee: SRI International
    Inventors: Jeffrey Lubin, James R. Bergen
  • Patent number: 11279279
    Abstract: An evaluation engine has two or more modules to assist a driver of a vehicle. A driver drowsiness module analyzes monitored features of the driver to recognize two or more levels of drowsiness of the driver of the vehicle. The driver drowsiness module evaluates drowsiness of the driver based on observed body language and facial analysis of the driver. The driver drowsiness module is configured to analyze live multi-modal sensor inputs from sensors against at least one of i) a trained artificial intelligence model and ii) a rules based model while the driver is driving the vehicle to produce an output comprising a driver drowsiness-level estimation. A driver assistance module provides one or more positive assistance mechanisms to the driver to return the driver to be at or above the designated level of drowsiness.
    Type: Grant
    Filed: December 19, 2017
    Date of Patent: March 22, 2022
    Assignees: SRI International, Toyota Motor Corporation
    Inventors: Amir Tamrakar, Girish Acharya, Makoto Okabe, John James Byrnes
  • Patent number: 11275109
    Abstract: Manufacturing integrated circuits is discussed with steps as follows. Creating a wafer with a plurality of dies, where each die contains its own integrated circuit. Fabricating multiple instances of TAP circuitry located in a margin between dies of the wafer. Fabricating on the wafer one row of test pads and power pads per group of dies on the wafer, where the row of test pads and power pads is electrically connected and shared among all of the dies in the group. The test and power pads connect to a chain of TAP circuitry in order to supply operating power as well as testing data to verify the integrity of each die in that group of dies. Singulating the dies to create each instance of the integrated circuit, and during the singulation process, the TAP circuitry located in the margin between the dies is destroyed.
    Type: Grant
    Filed: March 7, 2018
    Date of Patent: March 15, 2022
    Assignee: SRI International
    Inventors: Richard Sita, Michael G. Kane
  • Patent number: 11272662
    Abstract: A fruit harvesting system includes a vacuum generating subsystem and an end effector connected to the vacuum generating subsystem. The end effector has a first tube having a first diameter, and a second tube having a second diameter smaller than the first diameter so the second tube fits inside the first tube. A fruit harvesting system includes a vacuum generating subsystem, a tube connected to the vacuum generating subsystem and at least one structure coupled to an inside of the tube. A fruit harvesting system includes a vacuum generating subsystem, a first tube connected to the vacuum generating subsystem, and a second tube coupled to the first tube, the second tube having a tubular portion coupled to the first tube in an orientation other than parallel, the second tube having openings on opposite sides of the first tube.
    Type: Grant
    Filed: December 2, 2015
    Date of Patent: March 15, 2022
    Assignee: SRI International
    Inventors: Curt Salisbury, Jacob Suchoski, Rich Mahoney
  • Patent number: 11271308
    Abstract: Systems are provided for the efficient generation of oscillating magnetic fields below the Low Frequency band. These systems generate such fields by mechanically rotating one or more diametrically-magnetized permanent magnets. In order to reduce friction, the magnets are rotated by applying a motive magnetic field to the magnet(s) to rotate the magnet(s) and thereby generate the oscillating magnetic field. Additionally, diamagnetic repulsion, active magnetic field control, and/or biasing permanent magnets are employed to levitate the rotating magnet(s), further reducing friction and increasing system efficiency. These systems may be employed to generate modulated low-frequency oscillating magnetic fields for communication through seawater, rocks, or other obstacles. Additionally or alternatively, these systems may be employed to generate low-frequency oscillating magnetic fields for navigation and location sensing, resource identification and extraction, or other applications.
    Type: Grant
    Filed: September 5, 2018
    Date of Patent: March 8, 2022
    Assignee: SRI International
    Inventors: Ronald E. Pelrine, Annjoe Wong-Foy, Allen L. Hsu
  • Patent number: 11270426
    Abstract: Computer aided inspection systems (CAIS) and method for inspection, error analysis and comparison of structures are presented herein. In some embodiments, a CAIS may include a SLAM system configured to determine real-world global localization information of a user in relation to a structure being inspected using information obtained from a first sensor package, a model alignment system configured to: use the determined global localization information to index into a corresponding location in a 3D computer model of the structure being inspected; and align observations and/or information obtained from the first sensor package to the local area of the model 3D computer model of the structure extracted; a second sensor package configured to obtain fine level measurements of the structure; and a model recognition system configured to compare the fine level measurements and information obtained about the structure from the second sensor package to the 3D computer model.
    Type: Grant
    Filed: May 14, 2019
    Date of Patent: March 8, 2022
    Assignee: SRI International
    Inventors: Garbis Salgian, Bogdan C. Matei, Taragay Oskiper, Mikhail Sizintsev, Rakesh Kumar, Supun Samarasekera
  • Patent number: 11271130
    Abstract: A linear mode avalanche photodiode senses light and outputs electrical current by being configured to, generate a gain equal to or greater than 1000 times amplification while generating an excess noise factor of less than 3 times a thermal noise present at or above a non-cryogenic temperature due to the gain from the amplification. The linear mode avalanche photodiode detects one or more photons in the light by using a superlattice structure that is matched to suppress impact ionization for a first carrier in the linear mode avalanche photodiode while at least one of 1) increasing impact ionization, 2) substantially maintaining impact ionization, and 3) suppressing impact ionization to a lesser degree for a second carrier. The first carrier having its impact ionization suppressed is either i) an electron or ii) a hole; and then, the second carrier is the electron or the hole.
    Type: Grant
    Filed: July 11, 2018
    Date of Patent: March 8, 2022
    Assignee: SRI International
    Inventor: Winston K. Chan
  • Patent number: 11263339
    Abstract: In general, techniques for data access control are described, in which a policy engine implements and applies a declarative policy framework that can represent and reason about complex privacy policies. By using a common data model together with a formal shareability theory, this declarative policy framework enables the specification of expressive policies in a concise way without burdening the user with technical details of the underlying formalism of a data querying application or other knowledge representation scheme. The policy engine may be deployed as the policy decision point in a data access control system that also includes a policy enforcement point. The policy engine includes user interfaces for the creation, validation, and management of privacy policies. The policy engine may interface with systems that manage data requests and replies by coordinating policy engine decisions and access to databases.
    Type: Grant
    Filed: September 4, 2019
    Date of Patent: March 1, 2022
    Assignee: SRI International
    Inventors: Grit Denker, Karsten Martiny, Daniel Elenius
  • Patent number: 11263443
    Abstract: A method, apparatus and system for human skeleton pose estimation includes synchronously capturing images of a human moving through an area from a plurality of different points of view, for each of the plurality of captured images, determining a bounding box that bounds the human in the captured image and identifying pixel locations of the bounding box in the image, for each of the plurality of captured images, determining 2D and single-view 3D skeletons from the pixel locations of the bounding box, determining a first, multi-view 3D skeleton using a combination of the 2D and single-view 3D skeletons, and optimizing the first, multi-view 3D skeleton to determine a final 3D skeleton pose for the human. The method, apparatus and system can further include illuminating the area with structured light during the capturing of the images of the human moving through the area.
    Type: Grant
    Filed: May 7, 2020
    Date of Patent: March 1, 2022
    Assignee: SRI International
    Inventors: Jonathan D. Brookshire, Supun Samarasekera, Kshitij Singh Minhas
  • Patent number: 11238631
    Abstract: A method, apparatus and system for visual grounding of a caption in an image include projecting at least two parsed phrases of the caption into a trained semantic embedding space, projecting extracted region proposals of the image into the trained semantic embedding space, aligning the extracted region proposals and the at least two parsed phrases, aggregating the aligned region proposals and the at least two parsed phrases to determine a caption-conditioned image representation and projecting the caption-conditioned image representation and the caption into a semantic embedding space to align the caption-conditioned image representation and the caption. The method, apparatus and system can further include a parser for parsing the caption into the at least two parsed phrases and a region proposal module for extracting the region proposals from the image.
    Type: Grant
    Filed: April 22, 2020
    Date of Patent: February 1, 2022
    Assignee: SRI International
    Inventors: Karan Sikka, Ajay Divakaran, Samyak Datta
  • Patent number: 11223478
    Abstract: An example system can include a reference biometric template (RBT) reader, an authenticator, and an auxiliary system. In some examples, during an initial enrollment process, the RBT reader obtains a biometric from a user, transforms the biometric into an RBT, and provides different shares of the RBT to the authenticator and the auxiliary system. The authenticator and the auxiliary system create respective shares of helper data. In some examples, the authenticator and the auxiliary system use a non-commutative transformation function to embed a secret key in their respective shares of the helper data. The auxiliary system provides its share of the helper data to the authenticator. The authenticator combines its share of the helper data with the share provided by the auxiliary system to create a full version of the helper data. The helper data can be used in a subsequent authentication process between the RBT reader and the authenticator.
    Type: Grant
    Filed: April 2, 2019
    Date of Patent: January 11, 2022
    Assignee: SRI International
    Inventors: Karim Eldefrawy, Ivan De Oliveira Nunes, Titouan Tanguy