Patents by Inventor Hector A. Quevedo

Hector A. Quevedo 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: 10319098
    Abstract: A system for processing video signal information to identify those pixels associated with a moving object in the presence of platform and/or sensor pointing induced motion. Frame differencing with self-adjusting noise thresholds is implemented to detect pixels associated with objects that are in motion with respect to the background and a field-by-field motion pixel map of pixels associated with the moving object is generated. A two (2) step pixel grouping process is used where the first pass runs in real-time as the video signal is received and writes the links between pixel groups into entries in a table. The second pass operates on a smaller set of link data and only needs to reorder entries in the table.
    Type: Grant
    Filed: August 31, 2018
    Date of Patent: June 11, 2019
    Assignee: Raytheon Company
    Inventors: Stephen R. Nash, Christopher A. Leddy, Hector A. Quevedo
  • Publication number: 20190114785
    Abstract: A system for processing video signal information to identify those pixels associated with a moving object in the presence of platform and/or sensor pointing induced motion. Frame differencing with self-adjusting noise thresholds is implemented to detect pixels associated with objects that are in motion with respect to the background and a field-by-field motion pixel map of pixels associated with the moving object is generated. A two (2) step pixel grouping process is used where the first pass runs in real-time as the video signal is received and writes the links between pixel groups into entries in a table. The second pass operates on a smaller set of link data and only needs to reorder entries in the table.
    Type: Application
    Filed: August 31, 2018
    Publication date: April 18, 2019
    Applicant: Raytheon Company
    Inventors: Stephen R. Nash, Christopher A. Leddy, Hector A. Quevedo
  • Patent number: 10225441
    Abstract: According to one aspect, embodiments herein provide a TDI sensor comprising a plurality of light sensing elements arranged in a row, each configured to accumulate charge proportional to an intensity of light incident on it from a field of view, and means for improving the sampling resolution of the TDI sensor by electronically introducing phase shift between a first set of image data generated by the plurality of light sensing elements at a first phase and a second set of image data generated by the plurality of light sensing elements at a second phase, for reading out the first set of image data and the second set of image data from a light sensing element at an end of the row of light sensing elements, and for generating an image of the field of view based on the two sets of phase shifted image data.
    Type: Grant
    Filed: June 16, 2017
    Date of Patent: March 5, 2019
    Assignee: RAYTHEON COMPANY
    Inventors: Stephen P. Shaffer, Stephen M. Palik, Hector A. Quevedo
  • Patent number: 10109064
    Abstract: A system for processing video signal information to identify those pixels associated with a moving object in the presence of platform and/or sensor pointing induced motion. Frame differencing with self-adjusting noise thresholds is implemented to detect pixels associated with objects that are in motion with respect to the background and a field-by-field motion pixel map of pixels associated with the moving object is generated. A two (2) step pixel grouping process is used where the first pass runs in real-time as the video signal is received and writes the links between pixel groups into entries in a table. The second pass operates on a smaller set of link data and only needs to reorder entries in the table.
    Type: Grant
    Filed: September 1, 2015
    Date of Patent: October 23, 2018
    Assignee: Raytheon Company
    Inventors: Stephen R. Nash, Christopher A. Leddy, Hector A. Quevedo
  • Publication number: 20170310918
    Abstract: According to one aspect, embodiments herein provide a TDI sensor comprising a plurality of light sensing elements arranged in a row, each configured to accumulate charge proportional to an intensity of light incident on it from a field of view, and means for improving the sampling resolution of the TDI sensor by electronically introducing phase shift between a first set of image data generated by the plurality of light sensing elements at a first phase and a second set of image data generated by the plurality of light sensing elements at a second phase, for reading out the first set of image data and the second set of image data from a light sensing element at an end of the row of light sensing elements, and for generating an image of the field of view based on the two sets of phase shifted image data.
    Type: Application
    Filed: June 16, 2017
    Publication date: October 26, 2017
    Inventors: Stephen P. Shaffer, Stephen M. Palik, Hector A. Quevedo
  • Publication number: 20170228875
    Abstract: A system for processing video signal information to identify those pixels associated with a moving object in the presence of platform and/or sensor pointing induced motion. Frame differencing with self-adjusting noise thresholds is implemented to detect pixels associated with objects that are in motion with respect to the background and a field-by-field motion pixel map of pixels associated with the moving object is generated. A two (2) step pixel grouping process is used where the first pass runs in real-time as the video signal is received and writes the links between pixel groups into entries in a table. The second pass operates on a smaller set of link data and only needs to reorder entries in the table.
    Type: Application
    Filed: September 1, 2015
    Publication date: August 10, 2017
    Applicant: Raytheon Company
    Inventors: Stephen R. NASH, Christopher A. LEDDY, Hector A. QUEVEDO
  • Patent number: 9723179
    Abstract: According to one aspect, embodiments herein provide a TDI image sensor comprising an array of light sensing elements, at least one clock, and an image processor, wherein the at least one clock is configured to operate a first plurality of the light sensing elements to transfer accumulated charge to an adjacent element at a first phase and to operate a second plurality of the light sensing elements to transfer accumulated charge to an adjacent element at a second phase, and wherein the image processor is configured to read out a first signal from the first plurality of light sensing elements corresponding to a total charge accumulated at the first phase, to read out a second signal from the second plurality of light sensing elements corresponding to a total charge accumulated at the second phase, and to combine the first signal and the second signal to generate an image.
    Type: Grant
    Filed: November 25, 2014
    Date of Patent: August 1, 2017
    Assignee: RAYTHEON COMPANY
    Inventors: Stephen P. Shaffer, Stephen M. Palik, Hector A. Quevedo
  • Publication number: 20160150128
    Abstract: According to one aspect, embodiments herein provide a TDI image sensor comprising an array of light sensing elements, at least one clock, and an image processor, wherein the at least one clock is configured to operate a first plurality of the light sensing elements to transfer accumulated charge to an adjacent element at a first phase and to operate a second plurality of the light sensing elements to transfer accumulated charge to an adjacent element at a second phase, and wherein the image processor is configured to read out a first signal from the first plurality of light sensing elements corresponding to a total charge accumulated at the first phase, to read out a second signal from the second plurality of light sensing elements corresponding to a total charge accumulated at the second phase, and to combine the first signal and the second signal to generate an image.
    Type: Application
    Filed: November 25, 2014
    Publication date: May 26, 2016
    Inventors: Stephen P. Shaffer, Stephen M. Palik, Hector A. Quevedo