Patents by Inventor Jay Endsley

Jay Endsley 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).

  • Publication number: 20200007804
    Abstract: A control pulse is generated a first control signal line coupled to a transfer gate of a pixel to enable photocharge accumulated within a photosensitive element of the pixel to be transferred to a floating diffusion node, the first control signal line having a capacitive coupling to the floating diffusion node. A feedthrough compensation pulse is generated on a second signal line of the pixel array that also has a capacitive coupling to the floating diffusion node. The feedthrough compensation pulse is generated with a pulse polarity opposite the pulse polarity of the control pulse and is timed to coincide with the control pulse such that capacitive feedthrough of the control pulse to the floating diffusion node is reduced.
    Type: Application
    Filed: July 3, 2019
    Publication date: January 2, 2020
    Inventors: Michael Guidash, Jay Endsley, John Ladd, Thomas Vogelsang, Craig M. Smith
  • Patent number: 10404908
    Abstract: An imaging system includes multiple diffractive optical gratings disposed over a two-dimensional array of photosensitive pixels. The different gratings present different patterns and features that are tailored to produce point-spread responses that emphasize different properties of an imaged scene. The different responses are captured by the pixels, and data captured from the responses can be used separately or together to analyze aspects of the scene. The imaging systems can include circuitry to analyze the image data, and to support modes that select between point-spread responses, selections of the pixels, and algorithms for analyzing image data.
    Type: Grant
    Filed: June 15, 2016
    Date of Patent: September 3, 2019
    Assignee: Rambus Inc.
    Inventors: David G. Stork, Patrick R. Gill, Evan L. Erickson, Mark D. Kellam, Alexander C. Schneider, Jay Endsley, Salman Kabir
  • Patent number: 10362256
    Abstract: Signals representative of total photocharge integrated within respective image-sensor pixels are read out of the pixels after a first exposure interval that constitutes a first fraction of a frame interval. Signals in excess of a threshold level are read out of the pixels after an ensuing second exposure interval that constitutes a second fraction of the frame interval, leaving residual photocharge within the pixels. After a third exposure interval that constitutes a third fraction of the frame interval, signals representative of a combination of at least the residual photocharge and photocharge integrated within the pixels during the third exposure interval are read out of the pixels.
    Type: Grant
    Filed: September 20, 2016
    Date of Patent: July 23, 2019
    Assignee: Rambus Inc.
    Inventors: Jay Endsley, Thomas Vogelsang, Craig M. Smith, Michael Guidash, Alexander C. Schneider
  • Patent number: 10356350
    Abstract: Photocharge is accumulated within an image sensor pixel array during a first exposure interval. At conclusion of the first exposure interval, accumulated photocharge is discarded from a first subset of the pixels to emulate absence of incident light with respect to those pixels. After discarding accumulated photocharge from the first subset of the pixels, first and second readout signals are generated, the first readout signals corresponding to respective pixels not included in the first subset and indicative of photocharge accumulated therein, and the second readout signals corresponding to respective pixels included in the first subset.
    Type: Grant
    Filed: July 31, 2018
    Date of Patent: July 16, 2019
    Assignee: Rambus Inc.
    Inventors: Michael Guidash, Jay Endsley, John Ladd, Thomas Vogelsang, Craig M. Smith
  • Publication number: 20190166321
    Abstract: A sequence of control voltage levels are applied to a control signal line capacitively coupled to a floating diffusion node of a pixel to sequentially adjust a voltage level of the floating diffusion node. A pixel output signal representative of the voltage level of the floating diffusion node is compared with a reference voltage to identify a first control voltage level of the sequence of control voltage levels for which the voltage level of the floating diffusion node exceeds the reference voltage.
    Type: Application
    Filed: November 20, 2018
    Publication date: May 30, 2019
    Inventors: John Ladd, Michael Guidash, Craig M. Smith, Thomas Vogelsang, Jay Endsley, Michael T. Ching, James E. Harris
  • Patent number: 10306169
    Abstract: A pixel in an integrated-circuit image sensor is enabled to output, throughout a sampling interval, an analog signal having an amplitude dependent, at least in part, on photocharge integrated within a photosensitive element of the pixel. A plurality of samples of the analog signal are generated during an initial portion of the sampling interval that is shorter than a settling time for a maximum possible level of the analog signal.
    Type: Grant
    Filed: February 2, 2016
    Date of Patent: May 28, 2019
    Assignee: Rambus Inc.
    Inventors: Michael Guidash, Craig M. Smith, Jay Endsley
  • Patent number: 10284825
    Abstract: An imaging system includes a refractive optical element and one or more diffractive optical gratings disposed over a two-dimensional array of photosensitive pixels. The different gratings present different patterns and features that are tailored to produce point-spread responses that emphasize different properties of an imaged scene. The different responses are captured by the pixels, and data captured from the responses can be used separately or together to analyze aspects of the scene. The imaging systems can include circuitry to analyze the image data, and to support modes that select between point-spread responses, selections of the pixels, and algorithms for analyzing image data.
    Type: Grant
    Filed: August 23, 2016
    Date of Patent: May 7, 2019
    Assignee: Rambus Inc.
    Inventor: Jay Endsley
  • Patent number: 10274652
    Abstract: An imaging device uses a grating to produce an interference pattern for capture by a photodetector array. Digital photographs and other image information can then be extracted from the pattern. An integrated processor locally supports this extraction by upsampling the captured interference pattern and deconvolving the upsampled pattern with an image-calculation parameter set that represents the grating at a resolution greater than that provided by the photodetector array. Deconvolving the upsampled pattern with a high-resolution parameter increases the resolution of extracted image information.
    Type: Grant
    Filed: February 3, 2017
    Date of Patent: April 30, 2019
    Assignee: Rambus Inc.
    Inventors: Jay Endsley, Thomas Vogelsang
  • Patent number: 10277843
    Abstract: In a pixel array within an integrated-circuit image sensor, each of a plurality of pixels is evaluated to determine whether charge integrated within the pixel in response to incident light exceeds a first threshold. N-bit digital samples corresponding to the charge integrated within at least a subset of the plurality of pixels are generated, and then applied to a lookup table to retrieve respective M-bit digital values (M being less than N), wherein a stepwise range of charge integration levels represented by possible states of the M-bit digital values extends upward from a starting charge integration level that is determined based on the first threshold.
    Type: Grant
    Filed: May 8, 2017
    Date of Patent: April 30, 2019
    Assignee: Rambus Inc.
    Inventors: Craig M. Smith, Michael Guidash, Jay Endsley, Thomas Vogelsang, James E. Harris
  • Publication number: 20190082125
    Abstract: A pixel array within an integrated-circuit image sensor is exposed to light representative of a scene during a first frame interval and then oversampled a first number of times within the first frame interval to generate a corresponding first number of frames of image data from which a first output image may be constructed. One or more of the first number of frames of image data are evaluated to determine whether a range of luminances in the scene warrants adjustment of an oversampling factor from the first number to a second number, if so, the oversampling factor is adjusted such that the pixel array is oversampled the second number of times within a second frame interval to generate a corresponding second number of frames of image data from which a second output image may be constructed.
    Type: Application
    Filed: September 25, 2018
    Publication date: March 14, 2019
    Inventors: Craig M. Smith, Frank Armstrong, Jay Endsley, Thomas Vogelsang, James E. Harris, John Ladd, Michael Guidash
  • Publication number: 20190045149
    Abstract: Photocharge is accumulated within an image sensor pixel array during a first exposure interval. At conclusion of the first exposure interval, accumulated photocharge is discarded from a first subset of the pixels to emulate absence of incident light with respect to those pixels. After discarding accumulated photocharge from the first subset of the pixels, first and second readout signals are generated, the first readout signals corresponding to respective pixels not included in the first subset and indicative of photocharge accumulated therein, and the second readout signals corresponding to respective pixels included in the first subset.
    Type: Application
    Filed: July 31, 2018
    Publication date: February 7, 2019
    Inventors: Michael Guidash, Jay Endsley, John Ladd, Thomas Vogelsang, Craig M. Smith
  • Patent number: 10165209
    Abstract: A sequence of control voltage levels are applied to a control signal line capacitively coupled to a floating diffusion node of a pixel to sequentially adjust a voltage level of the floating diffusion node. A pixel output signal representative of the voltage level of the floating diffusion node is compared with a reference voltage to identify a first control voltage level of the sequence of control voltage levels for which the voltage level of the floating diffusion node exceeds the reference voltage.
    Type: Grant
    Filed: July 23, 2015
    Date of Patent: December 25, 2018
    Assignee: Rambus Inc.
    Inventors: John Ladd, Michael Guidash, Craig M. Smith, Thomas Vogelsang, Jay Endsley, Michael T. Ching, James E. Harris
  • Patent number: 10154220
    Abstract: Multiple image data subframes corresponding to respective portions of an exposure interval are generated within a sensor device of an image system. Depending on whether the exposure interval exceeds one or more exposure time thresholds, data representative multiple image data subframes are output from the image sensor device in one of at least two formats, including a first format in which each of the subframes of image data is output in its entirety, and a second format in which a logical combination of at least two of the subframes of image data is output instead of the at least two of the subframes of image data such that the total volume of image data output from the image sensor device is reduced relative to the first format.
    Type: Grant
    Filed: March 31, 2016
    Date of Patent: December 11, 2018
    Assignee: Rambus Inc.
    Inventors: Thomas Vogelsang, Jay Endsley, Michael Guidash, Craig M. Smith
  • Patent number: 10136090
    Abstract: An image sensor architecture with multi-bit sampling is implemented within an image sensor system. A pixel signal produced in response to light incident upon a photosensitive element is converted to a multiple-bit digital value representative of the pixel signal. If the pixel signal exceeds a sampling threshold, the photosensitive element is reset. During an image capture period, digital values associated with pixel signals that exceed a sampling threshold are accumulated into image data.
    Type: Grant
    Filed: March 14, 2014
    Date of Patent: November 20, 2018
    Assignee: Rambus Inc.
    Inventors: Thomas Vogelsang, Michael Guidash, Song Xue, Maxim Smirnov, Craig M. Smith, Jay Endsley, James E. Harris
  • Patent number: 10104318
    Abstract: A pixel array within an integrated-circuit image sensor is exposed to light representative of a scene during a first frame interval and then oversampled a first number of times within the first frame interval to generate a corresponding first number of frames of image data from which a first output image may be constructed. One or more of the first number of frames of image data are evaluated to determine whether a range of luminances in the scene warrants adjustment of an oversampling factor from the first number to a second number, if so, the oversampling factor is adjusted such that the pixel array is oversampled the second number of times within a second frame interval to generate a corresponding second number of frames of image data from which a second output image may be constructed.
    Type: Grant
    Filed: December 3, 2014
    Date of Patent: October 16, 2018
    Assignee: Rambus Inc.
    Inventors: Craig M. Smith, Frank Armstrong, Jay Endsley, Thomas Vogelsang, James E. Harris, John Ladd, Michael Guidash
  • Publication number: 20180270432
    Abstract: Signals representative of total photocharge integrated within respective image-sensor pixels are read out of the pixels after a first exposure interval that constitutes a first fraction of a frame interval. Signals in excess of a threshold level are read out of the pixels after an ensuing second exposure interval that constitutes a second fraction of the frame interval, leaving residual photocharge within the pixels. After a third exposure interval that constitutes a third fraction of the frame interval, signals representative of a combination of at least the residual photocharge and photocharge integrated within the pixels during the third exposure interval are read out of the pixels.
    Type: Application
    Filed: September 20, 2016
    Publication date: September 20, 2018
    Inventors: Jay Endsley, Thomas Vogelsang, Craig M. Smith, Michael Guidash, Alexander C. Schneider
  • Patent number: 10070084
    Abstract: A pixel within a pixel array of an integrated-circuit image sensor outputs an analog signal representative of accumulated photocharge. First and second analog-to-digital conversions of the analog signal are initiated while the pixel is outputting the analog signal, the first analog-to-digital conversion corresponding to a low-light range of photocharge accumulation within the pixel and the second analog-to-digital conversion corresponding to a brighter-light range of photocharge accumulation within the pixel.
    Type: Grant
    Filed: January 6, 2016
    Date of Patent: September 4, 2018
    Assignee: Rambus Inc.
    Inventors: Michael Guidash, Jay Endsley, John Ladd, Thomas Vogelsang, Craig M. Smith
  • Publication number: 20180191953
    Abstract: An imaging system includes multiple diffractive optical gratings disposed over a two-dimensional array of photosensitive pixels. The different gratings present different patterns and features that are tailored to produce point-spread responses that emphasize different properties of an imaged scene. The different responses are captured by the pixels, and data captured from the responses can be used separately or together to analyze aspects of the scene. The imaging systems can include circuitry to analyze the image data, and to support modes that select between point-spread responses, selections of the pixels, and algorithms for analyzing image data.
    Type: Application
    Filed: June 15, 2016
    Publication date: July 5, 2018
    Inventors: David G. Stork, Patrick R. Gill, Evan L. Erickson, Mark D. Kellam, Alexander C. Schneider, Jay Endsley, Salman Kabir
  • Publication number: 20180124343
    Abstract: Multiple image data subframes corresponding to respective portions of an exposure interval are generated within a sensor device of an image system. Depending on whether the exposure interval exceeds one or more exposure time thresholds, data representative multiple image data subframes are output from the image sensor device in one of at least two formats, including a first format in which each of the subframes of image data is output in its entirety, and a second format in which a logical combination of at least two of the subframes of image data is output instead of the at least two of the subframes of image data such that the total volume of image data output from the image sensor device is reduced relative to the first format.
    Type: Application
    Filed: March 31, 2016
    Publication date: May 3, 2018
    Inventors: Thomas Vogelsang, Jay Endsley, Michael Guidash, Craig M. Smith
  • Patent number: 9894304
    Abstract: Photocharge is integrated within a first plurality of pixels of an integrated-circuit image sensor during a first exposure interval. A read-out signal is output from each pixel of the first plurality of pixels upon conclusion of the first exposure interval, each read-out signal indicating a respective level of photocharge integrated within the corresponding pixel during the first exposure interval. Photocharge is also integrated within a second plurality of pixels during a second exposure interval that transpires concurrently with the first exposure interval and has a duration not more than half the duration of the first exposure interval. A read-out signal is output from each pixel of the second plurality of pixels at least twice with respect to the second exposure interval, with each such read-out signal indicating a respective level of photocharge integrated within the corresponding pixel during at least a portion of the second exposure interval.
    Type: Grant
    Filed: August 17, 2015
    Date of Patent: February 13, 2018
    Assignee: Rambus Inc.
    Inventors: Craig M. Smith, Michael Guidash, Thomas Vogelsang, Jay Endsley, Michael T. Ching