Patents Assigned to Exnodes Inc.
  • Patent number: 10184901
    Abstract: A method for designing a filter to image a feature on a surface, comprising: acquiring an image of said feature, with said image of feature comprising information from multiple points of said feature; generating a structural model of said feature by extracting predetermined properties of said feature from said image of feature; computing a scattering model for said feature from said structural model of said feature, with said scattering model for feature having information on scattered electromagnetic field from feature propagating in a plurality of scattering angles, wherein said scattered electromagnetic field from feature is generated by scattering of an electromagnetic radiation by said feature; acquiring an image of said surface, with said image of surface comprising information from multiple points of said surface; generating a structural model of said surface by extracting predetermined properties of said surface from said image of surface; computing a scattering model for said surface from said struct
    Type: Grant
    Filed: January 31, 2017
    Date of Patent: January 22, 2019
    Assignee: Exnodes Inc.
    Inventor: Sri Rama Prasanna Pavani
  • Patent number: 10082533
    Abstract: A system and method for improving production yield of an article with cloud based processing by storing process information in cloud; transferring functional results to cloud, with functional results having identifying information of articles that have failed a functional test and identifying information of articles that have passed functional test; generating a probable cause list from process information in cloud, wherein probable cause list is a shortlisted version of said process information in said cloud; and generating a root cause list from probable cause list in cloud, wherein root cause list comprises process information responsible for failure in failed articles, whereby root causes of failures are analytically determined with processing power, memory, and storage that are scalable, reliable, and upgradable on demand.
    Type: Grant
    Filed: October 29, 2016
    Date of Patent: September 25, 2018
    Assignee: Exnodes Inc.
    Inventor: Sri Rama Prasanna Pavani
  • Patent number: 10027928
    Abstract: A system and method for inspecting a surface, comprising: illuminating said surface with an electromagnetic radiation to generate scattered radiation, having a plurality of scattering angles, from features of said surface; collecting said scattered radiation from said surface at two or more positions, with radiation collected at each position forming an image of a plurality of points on said surface by collecting a portion of said scattered radiation propagating in a subset of said scattering angles; detecting images of surface at two or more said positions; and combining information from two or more said images of surface to generate a global information set, having information from a plurality of said scattering angles collected by two or more said imaging modules, whereby said features of said surface are detected in said images of surface and in said global information set.
    Type: Grant
    Filed: October 28, 2014
    Date of Patent: July 17, 2018
    Assignee: Exnodes Inc.
    Inventor: Sri Rama Prasanna Pavani
  • Patent number: 9696265
    Abstract: A method for designing a filter to image a feature on a surface, comprising: acquiring an image of said feature, with said image of feature comprising information from multiple points of said feature; generating a structural model of said feature by extracting predetermined properties of said feature from said image of feature; computing a scattering model for said feature from said structural model of said feature, with said scattering model for feature having information on scattered electromagnetic field from feature propagating in a plurality of scattering angles, wherein said scattered electromagnetic field from feature is generated by scattering of an electromagnetic radiation by said feature; acquiring an image of said surface, with said image of surface comprising information from multiple points of said surface; generating a structural model of said surface by extracting predetermined properties of said surface from said image of surface; computing a scattering model for said surface from said struct
    Type: Grant
    Filed: November 4, 2014
    Date of Patent: July 4, 2017
    Assignee: Exnodes Inc.
    Inventor: Sri Rama Prasanna Pavani
  • Patent number: 9612273
    Abstract: A system and method for inspecting a surface with cloud based processing, comprising: generating surface data by inspecting a surface; transferring said surface data from a client to a cloud, wherein said cloud comprises multiple interconnected computing nodes that are remotely located from said client; computing surface properties using said surface data on said cloud; generating surface analytics from said surface properties and a prior information set, with said prior information set comprising surface properties previously stored in said cloud; and transferring said surface properties and said surface analytics from said cloud to said client, whereby said surface properties and said surface analytics are generated with processing power, memory, and storage that are scalable, reliable, and upgradable on demand.
    Type: Grant
    Filed: November 28, 2014
    Date of Patent: April 4, 2017
    Assignee: Exnodes Inc.
    Inventor: Sri Rama Prasanna Pavani
  • Patent number: 9523645
    Abstract: A system and method for inspecting a surface, comprising: illuminating said surface with an electromagnetic radiation to generate scattered radiation from features of said surface; inducing a change in phase to said scattered radiation for reducing divergence of said scattered radiation and for redirecting said scattered radiation towards a predetermined spatial region; focusing after said radiation has propagated to said spatial region; capturing an image of radiation, whereby said features of said surface are detected in said image of radiation.
    Type: Grant
    Filed: October 20, 2014
    Date of Patent: December 20, 2016
    Assignee: Exnodes Inc.
    Inventor: Sri Rama Prasanna Pavani
  • Patent number: 9395309
    Abstract: A system and method for inspecting a surface, comprising: illuminating a region of said surface, with said region having an aspect ratio larger than unity; capturing an image of scattered radiation originating from said region; and computing electromagnetic field of said scattered radiation from said image of scattered radiation and generating an image of region by computational propagation of said electromagnetic field through a predetermined distance, whereby features of said region are captured in said image of region.
    Type: Grant
    Filed: October 15, 2014
    Date of Patent: July 19, 2016
    Assignee: Exnodes Inc.
    Inventor: Sri Rama Prasanna Pavani
  • Patent number: 9324541
    Abstract: A method for certifying an inspection system using a calibrated surface, comprising: acquiring a calibrated list from said calibrated surface, with said calibrated list comprising information about features located on said calibrated surface; inspecting said calibrated surface with said inspection system to generate an estimated list, with said estimated list comprising information about features located on said calibrated surface; generating a matched list by searching for the presence of one or more calibrated features in said estimated list, wherein said calibrated features are listed in said calibrated list; computing an estimated characteristic parameter from said matched list, wherein said estimated characteristic parameter quantifies features in said matched list having a unifying characteristic; and comparing said estimated characteristic parameter with a calibrated characteristic parameter, wherein said calibrated characteristic parameter quantifies features in said calibrated list having said unifyi
    Type: Grant
    Filed: November 18, 2014
    Date of Patent: April 26, 2016
    Assignee: Exnodes Inc.
    Inventor: Sri Rama Prasanna Pavani
  • Patent number: 9250187
    Abstract: A system and method for detecting a feature located on a surface, comprising: attaching a label to said feature; generating a label radiation from said label, a feature radiation from said feature, and a surface radiation from said surface; collecting said label radiation, said feature radiation, and said surface radiation; separating said label radiation from said feature radiation and said surface radiation; capturing the separated label radiation for generating an image of label, with said image of label having one or more pixels; and locating label pixels corresponding to said label radiation by searching for pixels, in said image of label, that possess substantially different pixel values when compared to other pixels in local neighborhood, whereby said feature is located by detecting said label.
    Type: Grant
    Filed: November 11, 2014
    Date of Patent: February 2, 2016
    Assignee: Exnodes Inc.
    Inventor: Sri Rama Prasanna Pavani
  • Patent number: 9250194
    Abstract: A system and method for illuminating a surface, comprising: providing a reflective layer around said surface; directing an electromagnetic beam to be incident on said layer; aligning said layer, said beam, and said surface so that said beam undergoes a plurality of reflections on said layer for illuminating a predetermined region of said surface, whereby the size of said region is larger than the size of said beam, and the intensity of illumination on said region is higher than the value obtained by multiplying the intensity of said beam and the ratio of the size of said beam to the size of said region.
    Type: Grant
    Filed: October 10, 2014
    Date of Patent: February 2, 2016
    Assignee: Exnodes Inc.
    Inventor: Sri Rama Prasanna Pavani