Patents Assigned to NEC Corporation of America
  • Publication number: 20220308290
    Abstract: Aspects of the present disclosure describe methods for reducing guided acoustic wave Brillouin (GAWBS) noise in an optical fiber that may be included in an optical communications system by reducing the polarization diffusion length of the fiber by increasing the birefringence of the optical fiber, the increased birefringence of the optical fiber being increased with respect to its average magnitude. Additionally, the polarization diffusion length is reduced by reducing the coherence length of birefringence of the optical fiber.
    Type: Application
    Filed: March 1, 2022
    Publication date: September 29, 2022
    Applicants: NEC LABORATORIES AMERICA, INC, NEC Corporation
    Inventors: Fatih YAMAN, Eduardo Mateo RODRIGUEZ, Hassam BATSHON, Shinsuke FUJISAWA, Kohei NAKAMURA, Takanori INOUE, Yoshihisa INADA
  • Publication number: 20220309283
    Abstract: Disclosed herein are methods and systems for determining liveness of a user, comprising analyzing visual content of a screen of a client device used by a user to access an online service, adjusting one or more visual objects displayed on the screen of the client device according to dynamically changing patterns, capturing a sequence of images depicting one or more reflecting surfaces associated with the user viewing the screen while the visual objects are displayed, analyzing the images to identify a reflection of the displayed visual objects in the reflecting surfaces and verifying liveness of the user based on one or more of a plurality of reflection attributes of the identified reflection.
    Type: Application
    Filed: March 29, 2021
    Publication date: September 29, 2022
    Applicant: NEC Corporation Of America
    Inventors: Liran OREVI, Mark VEXLER, Yaacov HOCH
  • Publication number: 20220284223
    Abstract: Disclosed herein are methods and systems for painting driving markings invisible in visible light spectrum, comprising generating driving assistance markings expressing driving information relating to one or more road segments, computing instructions for painting the driving assistance markings on one or more elements of the road segment(s) using one or more paint material(s) characterized by: (1) reflecting light in a visible light spectral range deviating less than a first value from the visible light spectral range reflected by a surface of the element(s) and (2) reflecting light in an infrared spectral range deviating more than a second value from the infrared spectral range reflected by the surface of the element(s), and outputting the painting instructions for applying the one or more paint materials on the element(s) according to the instructions such that the driving assistance markings are visible in the infrared spectrum and significantly invisible in the visible spectrum.
    Type: Application
    Filed: March 4, 2021
    Publication date: September 8, 2022
    Applicant: NEC Corporation Of America
    Inventor: Tsvi LEV
  • Publication number: 20220284226
    Abstract: Disclosed herein are methods and systems for detecting dynamic objects using road painted patterns perceptible in infrared spectral range, comprising receiving images captured in one or more infrared spectral ranges depicting a road segment painted with background patterns which are highly imperceptible in visible light spectrum while highly visible in one or more infrared spectral ranges, analyzing the images to detecting one or more dynamic objects located in front of the background patterns. The light reflected by the one or more dynamic objects in the one or more infrared spectral ranges deviating from the light reflected by the one or more background pattern and computing a location of the one or more identified objects. Further disclosed are methods and systems for calibration of systems and/or sensors based on reference markings which are highly imperceptible in visible light spectrum while highly visible in the infrared spectral range(s).
    Type: Application
    Filed: July 12, 2021
    Publication date: September 8, 2022
    Applicant: NEC Corporation Of America
    Inventor: Tsvi LEV
  • Publication number: 20220282436
    Abstract: Disclosed herein are methods and systems for enhancing road markings using Infrared (IR) retroreflective spherical elements, comprising immersing a plurality of IR retroreflective spherical elements in one or more paint materials to produce a composition applied to paint road markings on one or more surfaces of one or more road segments. Each of the plurality of IR retroreflective spherical elements is at least partially transparent in visible light spectral range and in one or more infrared spectral ranges and is at least partially coated with one or more IR reflective materials characterized by (1) reflecting more than a first value of light in the one or more infrared spectral ranges, and (2) transferring more than a second value of light in the visible light spectral range. The painted road markings expressing driving information relating to the one or more road segments.
    Type: Application
    Filed: January 17, 2022
    Publication date: September 8, 2022
    Applicant: NEC Corporation Of America
    Inventor: Tsvi LEV
  • Publication number: 20220284225
    Abstract: Disclosed herein are methods and system for detecting road marking expressed using alternating infrared reflective tiles comprising high infrared reflective tiles and low infrared red reflective tiles painted on a road surface using paint material(s) characterized by: (1) reflecting light in visible light spectral range deviating less than a first value from the light reflected by the road surface and (2) reflecting light in an infrared spectral range deviating more than a second value from the light reflected by the road surface. Infrared image(s) and visible light image(s) of the road surface which are registered to each other may be analyzed to compute an infrared reflective value and a luminance value for each pixel respectively. A ratio may be computed between the infrared reflective value of and the luminance value of corresponding pixels to identify high and low infrared reflective tiles in pixels having a ratio exceeding a third value.
    Type: Application
    Filed: May 24, 2021
    Publication date: September 8, 2022
    Applicant: NEC Corporation Of America
    Inventor: Tsvi LEV
  • Publication number: 20220284224
    Abstract: Disclosed herein are methods and systems for painting driving assistance markings using one or more paint materials which are visible in a plurality of light spectral ranges, in particular, visible light and one or more infrared light spectral ranges. Further disclosed are methods and systems for analyzing images captured in multiple spectral ranges to identify the driving assistance markings and/or part thereof in a plurality of different spectral ranges and identify aggregated driving assistance markings by aggregating the driving assistance markings identified in the plurality of different spectral ranges. Also disclosed herein are methods and systems for presenting and detecting enhanced driving assistance markings on one or more elements under one or more paint materials which are highly transparent in one or more infrared spectral ranges while reflecting visible light conforming to a color of the element(s) surface thus not affecting appearance of the element(s) in the visible light spectrum.
    Type: Application
    Filed: May 6, 2021
    Publication date: September 8, 2022
    Applicant: NEC Corporation Of America
    Inventor: Tsvi LEV
  • Publication number: 20220278748
    Abstract: Aspects of the present disclosure are directed to systems, methods, and structures providing for the accurate measurement of guided acoustic-wave Brillouin scattering in optical fiber transmission systems and facilities.
    Type: Application
    Filed: June 1, 2021
    Publication date: September 1, 2022
    Applicants: NEC LABORATORIES AMERICA, INC, NEC Corporation
    Inventors: Fatih YAMAN, Eduardo Mateo RODRIGUEZ, Shinsuke FUJISAWA, Hussam BATSHON, Kohei NAKAMURA, Takanori INOUE, Yoshihisa INADA, Takaaki OGATA
  • Publication number: 20220260667
    Abstract: Provided herein are methods and systems for generating a model, mapping a monitored space, and used for augmenting the location and paths of devices path in the monitored space, using orientation and obstruction analysis. The disclosure comprises moving a device having a camera and one or more wireless transceiver through the monitored space, exchanging signal transmissions with one or more wireless transceivers present in the monitored space, and taking images, video sequences, or other optical readings. Either the mobile wireless device, the wireless transceivers, or both may have a non-isotropic transmission and reception characteristics, due to antenna structure, occlusions, other objects with radiation impact and/or the like. The images, videos, and/or optical readings, in addition to the received signal characteristics are stored and processed to generate the model, which one or more verification units, configured to verify the location objects or devices in the monitored space, may use.
    Type: Application
    Filed: February 14, 2021
    Publication date: August 18, 2022
    Applicant: NEC Corporation Of America
    Inventor: Tsvi LEV
  • Publication number: 20220237396
    Abstract: An article having an invisible infrared pattern is disclosed. The article includes at least one infrared pattern printed onto a surface. The infrared pattern includes regions of high absorption and high reflection for a plurality of wavelengths of infrared radiation ranging between 700 and 2000 nm. A coating is overlaid over the infrared pattern. The coating is made of a material and has a thickness that is penetrable by infrared radiation and that has an average opacity of at least 20 for light in the visible range.
    Type: Application
    Filed: January 26, 2021
    Publication date: July 28, 2022
    Applicant: NEC Corporation Of America
    Inventor: Tsvi LEV
  • Publication number: 20220228859
    Abstract: Aspects of the present disclosure describe estimating/measuring core-cladding concentricity error in optical fibers. In sharp contrast to the prior art, our inventive method is based on measuring a seemingly unrelated property of fibers called guided acoustic wave Brillouin scattering (GAWBS). As we shall show and describe, by analyzing this GAWBS property we advantageously determine what level of CCCE is exhibited by the optical fiber.
    Type: Application
    Filed: January 17, 2022
    Publication date: July 21, 2022
    Applicants: NEC LABORATORIES AMERICA, INC, NEC Corporation
    Inventors: Fatih YAMAN, Hussam BATSHON, Shinsuke FUJISAWA, Kohei NAKAMURA, Takanori INOUE, Eduardo Mateo RODRIGUEZ, Yoshihisa INADA
  • Patent number: 11394698
    Abstract: Provided herein are system, devices and methods for applying Multi-Party Computation (MPC) to authenticate a user accessing a secure resource using a plurality of computing nodes. The computing nodes, each receiving a respective one of a plurality of encrypted shares created using a plurality of keys to encrypt private data captured by a client device used by the user accessing the secure resource, engage in a secure MPC to compare between the encrypted shares and reference encrypted private data copies also encrypted using the plurality of keys without decrypting the private data since the keys are not available to the computing nodes. The computing nodes compute a match score based on the comparison and transmit it to a controller of the secure resource configured to grant or deny the client device access to the secure resource based on the match score.
    Type: Grant
    Filed: July 29, 2020
    Date of Patent: July 19, 2022
    Assignee: NEC Corporation Of America
    Inventors: Tsvi Lev, Yaacov Hoch
  • Publication number: 20220224515
    Abstract: Disclosed herein are methods and systems for efficiently retrieving data from an at least partially encrypted table based record using secure Multi-Party Computation (MPC). A query received to retrieve data from a table based record comprising data items arranged in rows and columns may include a queried data item (key) which potentially matches one or more encrypted data items contained in one or more of the columns. The computing nodes, each having a respective one of a plurality of shares of a one-hot representation of each of the encrypted data items engage in the MPC session to match between a one-hot representation of the queried data item and the one-hot representation of each encrypted data item and output each matching row. The match is based on multiplying, in each encrypted data item's one-hot representation, only bits identified as hot in the queried data item's one-hot representation.
    Type: Application
    Filed: January 10, 2021
    Publication date: July 14, 2022
    Applicant: NEC Corporation Of America
    Inventors: Ori YAMPOLSKY, Maya COHEN MAIMON, Tsvi LEV, Yaacov HOCH, Ekaterina SHELENKOVA
  • Publication number: 20220212633
    Abstract: A method for detecting non-rain and/or non-snow particles movement towards an optical interface is disclosed. The method comprises: receiving one or more images from one or more imaging sensors of the vicinity of the optical interface, of particles movement towards the optical interface; analyzing the one or more images to detect non-rain and/or non-snow particles movement towards the optical interface and distinguish between rain and/or snow particles and the non-rain and/or non-snow particles movement towards the optical interface; and controlling one or more wiping elements activation based on the analyzed one or more images and removing the non-rain and/or non-snow particles from the optical interface.
    Type: Application
    Filed: January 6, 2021
    Publication date: July 7, 2022
    Applicant: NEC Corporation Of America
    Inventor: Tsvi LEV
  • Publication number: 20220207263
    Abstract: Disclosed herein are methods and systems for determining whether a user engaged in an interactive video session is a genuine user or a potential impersonator by analyzing a plurality of consecutive images depicting the user while engaged in the video session to identify one or more dynamic facial patterns in the face of the user while his lips are moving. Each such dynamic facial pattern may express a movement of one or more of a plurality of wrinkles and/or other dynamic facial features (e.g., nostrils, distance between nostrils, ear, skin portion, muscle, etc.) in the face of the user. The user may be then determined to be genuine or not based on a comparison between the identified dynamic facial pattern(s) and one or more reference dynamic facial patterns.
    Type: Application
    Filed: December 29, 2020
    Publication date: June 30, 2022
    Applicant: NEC Corporation Of America
    Inventors: Mark VEXLER, Liran OREVI, Yaacov HOCH, Tsvi LEV
  • Publication number: 20220188706
    Abstract: There is provided a system for computing a secure statistical classifier, comprising: at least one hardware processor executing a code for: accessing code instructions of an untrained statistical classifier, accessing a training dataset, accessing a plurality of cryptographic keys, creating a plurality of instances of the untrained statistical classifier, creating a plurality of trained sub-classifiers by training each of the plurality of instances of the untrained statistical classifier by iteratively adjusting adjustable classification parameters of the respective instance of the untrained statistical classifier according to a portion of the training data serving as input and a corresponding ground truth label, and at least one unique cryptographic key of the plurality of cryptographic keys, wherein the adjustable classification parameters of each trained sub-classifier have unique values computed according to corresponding at least one unique cryptographic key, and providing the statistical classifier, whe
    Type: Application
    Filed: March 1, 2022
    Publication date: June 16, 2022
    Applicants: NEC Corporation Of America, Bar-Ilan University, NEC Corporation
    Inventors: Jun FURUKAWA, Joseph KESHET, Kazuma OHARA, Toshinori ARAKI, Hikaru TSUCHIDA, Takuma AMADA, Kazuya KAKIZAKI, Shir AVIV-REUVEN
  • Patent number: 11361445
    Abstract: There is provided a computer implemented method for analyzing a thermal image for enforcing mask wearing compliance, comprising: receiving a thermal image of a subject captured by a sensor, analyzing the thermal image to identify an indication of estimated temperature of a region of a face of the subject, in response to the estimated temperature being below a temperature threshold, detecting lack of mask wearing compliance, and generating instructions for meeting proper mask wearing compliance.
    Type: Grant
    Filed: July 8, 2020
    Date of Patent: June 14, 2022
    Assignee: NEC Corporation Of America
    Inventor: Tsvi Lev
  • Patent number: 11361592
    Abstract: A monitoring system, comprising: at least one device, comprising at least one processing circuitry configured for: receiving from at least one image sensor connected to the at least one processing circuitry, at least one digital image captured by the at least one image sensor; identifying a nature of at least one relationship between at least one first body part of at least one first person and at least one second body part of at least one second person, where the at least one first person and the at least one second person are identified in the at least one digital image; identifying at least one offending relationship according to the nature of the at least one relationship and a set of relationship rules; and outputting an indication of the at least one offending relationship.
    Type: Grant
    Filed: January 13, 2020
    Date of Patent: June 14, 2022
    Assignee: NEC Corporation Of America
    Inventors: Tsvi Lev, Yaacov Hoch
  • Patent number: 11357411
    Abstract: There is provided a system for measuring a physiological parameter of a person indicative of physiological pathology, comprising: a plurality of remote non-contact sensors, each of a different type of sensing modality, at least one hardware processor executing a code for: simultaneously receiving over a time interval, from each of the plurality of remote non-contact sensors monitoring a person, a respective dataset, extracting, from each respective dataset, a respective sub-physiological parameter of a plurality of sub-physiological parameters, analyzing a combination of the plurality of sub-physiological parameters, and computing a physiological parameter indicative of physiological pathology according to the analysis, wherein an accuracy of the physiological parameter computed from the combination is higher than an accuracy of the physiological parameter independently computed using any one of the plurality of sub-physiological parameters.
    Type: Grant
    Filed: August 31, 2020
    Date of Patent: June 14, 2022
    Assignee: NEC Corporation Of America
    Inventors: Tsvi Lev, Yaacov Hoch
  • Patent number: 11363557
    Abstract: A computer implemented method of detecting unauthorized mobile wireless transmitters, comprising using one or more processors adapted for obtaining, from one or more radio frequency (RF) sensors deployed in a monitored location, RF sensory data relating to a plurality of transmissions transmitted by one or more of a plurality of mobile wireless transmitters, detecting a change in a location of one or more of the mobile wireless transmitters by analyzing the RF sensory data, classifying one or more of the mobile wireless transmitters as unauthorized in case the detected location change deviates from one or more mobility rules and outputting an indication of the classification.
    Type: Grant
    Filed: November 28, 2018
    Date of Patent: June 14, 2022
    Assignee: NEC Corporation Of America
    Inventors: Tsvi Lev, Yaacov Hoch, Doron Gonen