Patents by Inventor Alberto M. Magnani

Alberto M. Magnani 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: 11089244
    Abstract: An imaging array and a pixel sensor are disclosed. One of the pixel sensors in the imaging array includes a photodiode having a cathode connected to an electron storage node and an anode connected to a hole storage node. An overflow path connects the electron storage node via an overflow gate that allows electrons to leak off of the electron storage node into the overflow path if the electron storage node has a potential less than a leakage potential. A floating diffusion node is connected to the electron storage node by a transfer gate and the overflow path by an overflow path gate. A hole storage node reset gate connects the hole storage node to ground. A hole storage capacitor is connected between the hole storage node and ground, and an overflow path coupling capacitor connects the hole storage node to the overflow path.
    Type: Grant
    Filed: December 9, 2019
    Date of Patent: August 10, 2021
    Assignee: BAE Systems Imaging Solutions Inc.
    Inventors: Hung T. Do, Chenguang Gong, Paul G. Lim, Alberto M. Magnani
  • Publication number: 20210225913
    Abstract: An apparatus for forming a color image of a scene and a method for utilizing that apparatus are disclosed. The apparatus includes a plurality of pixel sensors. Each pixel sensor includes a first photodetector includes first main photodiode and a first floating diffusion node. The first main photodiode is characterized by a first light conversion efficiency as a function of wavelength of a light signal incident thereon. The first floating diffusion node includes a parasitic photodiode characterized by a second light conversion efficiency as a function of the wavelength. The second light conversion efficiency is different from the first light conversion efficiency as a function of wavelength. A controller generates an intensity of light in each of a plurality of wavelength bands for the pixel sensor utilizing a measurement of the light signal by each of the first main photodiode and the first parasitic photodiode in that photodetector.
    Type: Application
    Filed: May 31, 2017
    Publication date: July 22, 2021
    Inventors: John W. Ladd, James E. Crouch, Alberto M. Magnani
  • Publication number: 20210176414
    Abstract: An imaging array and a pixel sensor are disclosed. One of the pixel sensors in the imaging array includes a photodiode having a cathode connected to an electron storage node and an anode connected to a hole storage node. An overflow path connects the electron storage node via an overflow gate that allows electrons to leak off of the electron storage node into the overflow path if the electron storage node has a potential less than a leakage potential. A floating diffusion node is connected to the electron storage node by a transfer gate and the overflow path by an overflow path gate. A hole storage node reset gate connects the hole storage node to ground. A hole storage capacitor is connected between the hole storage node and ground, and an overflow path coupling capacitor connects the hole storage node to the overflow path.
    Type: Application
    Filed: December 9, 2019
    Publication date: June 10, 2021
    Applicant: BAE Systems Imaging Solutions Inc.
    Inventors: Hung T. Do, Chenguang Gong, Paul G. Lim, Alberto M. Magnani
  • Patent number: 10939046
    Abstract: An apparatus for taking moving pictures, a method for taking moving pictures, and a novel pixel sensor array are disclosed. The apparatus includes a rectangular imaging array, a plurality of column processing circuits, and a controller. The rectangular imaging array is characterized by a plurality of rows and columns of UHDR pixel sensors and a plurality of readout lines, and a plurality of row select lines. Each column processing circuit is connected to a corresponding one of the plurality of readout lines. The controller causes the rectangular imaging array to measure a plurality of images of a scene that is illuminated by a pulsating light source characterized by an illumination period and a dark period. Each of the images is generated in a frame period which includes an exposure period and a dead period, the dead period being less than the dark period.
    Type: Grant
    Filed: November 30, 2017
    Date of Patent: March 2, 2021
    Assignee: BAE Systems Imaging Solutions Inc.
    Inventors: Alberto M. Magnani, Christopher R. Adams, Calvin B. Ward
  • Patent number: 10863128
    Abstract: A system produces an interpolated luminance-balanced monochrome image from a Red-Clear-Clear-Clear (RCCC) pattern image. It may include an imager having a RCCC pattern filter array. There is an interpolation processing module with one or more processors processing sampled, red filtered image pixels. A red plane is interpolated using the sampled, red filtered pixels, producing an interpolated red for the pixels. The interpolated red pixels are subtracted from the sampled clear pixels, producing a “Clear minus Red” (“C?R”) plane. A C?R value is interpolated for the red filtered pixels. The interpolated C?R value is added to the sampled red pixels, and the monochrome image is output, where the luminance is balanced across the pixels, especially in low and very light environments.
    Type: Grant
    Filed: January 15, 2019
    Date of Patent: December 8, 2020
    Assignee: BAE Systems Information and Electronic Systems Integration Inc.
    Inventor: Alberto M Magnani
  • Patent number: 10863130
    Abstract: An imaging array and method for using the same that are adapted for backside illuminated imaging arrays utilizing a global shutter are disclosed. The imaging array includes a plurality of pixel sensors having an ordered array of pixel sensors. Each pixel sensor includes a main photodiode and a correction photodiode. A controller resets all of the main photodiodes at a first time that is the same for all of the pixel sensors, resets all of the correction photodiodes at a second time that is the same for all of the pixel sensors after the first time, and sequentially reads out the pixel sensors. The pixel sensor is read out at a third time that is different for different ones of the pixel sensors. A correction charge is measured that corrects for the different readout times.
    Type: Grant
    Filed: January 25, 2017
    Date of Patent: December 8, 2020
    Assignee: BAE Systems Imaging Solutions Inc.
    Inventors: Hung T. Do, Chenguang Gong, Alberto M. Magnani
  • Publication number: 20200228742
    Abstract: A system produces an interpolated luminance-balanced monochrome image from a Red-Clear-Clear-Clear (RCCC) pattern image. It may include an imager having a RCCC pattern filter array. There is an interpolation processing module with one or more processors processing sampled, red filtered image pixels. A red plane is interpolated using the sampled, red filtered pixels, producing an interpolated red for the pixels. The interpolated red pixels are subtracted from the sampled clear pixels, producing a “Clear minus Red” (“C?R”) plane. A C?R value is interpolated for the red filtered pixels. The interpolated C?R value is added to the sampled red pixels, and the monochrome image is output, where the luminance is balanced across the pixels, especially in low and very light environments.
    Type: Application
    Filed: January 15, 2019
    Publication date: July 16, 2020
    Applicant: BAE SYSTEMS Information and Electronic Systems Integration Inc.
    Inventor: Alberto M. Magnani
  • Publication number: 20200228731
    Abstract: A low-noise amplifier is disclosed. The amplifier includes a signal amplifier having an amplifier signal output, a first filter capacitor, a buffer amplifier having a buffer amplifier input and a buffer amplifier output; and a switching network. The first filter capacitor has first and second terminals. The second terminal is connected to a power rail. The amplifier signal output is connected to the buffer amplifier input by a first direct current path and the buffer amplifier output to the first terminal of the first filter capacitor by a second direct current path during a first time period. The amplifier signal output is connected directly to the first terminal of the first filter capacitor by a third direct current path during a second time period, and the amplifier signal output to the first terminal of the first filter capacitor through a resistor during a third time period.
    Type: Application
    Filed: June 29, 2017
    Publication date: July 16, 2020
    Applicant: BAE Systems Imaging Solutions Inc.
    Inventors: Hung T. Do, Chenguang Gong, Alberto M. Magnani
  • Publication number: 20200150229
    Abstract: A LIDAR system and a method for operating a LIDAR system are disclosed. The LIDAR system broadly includes a transmitter that that emits a light pulse in response to a launch signal, a receiver that detects light pulses and determines a time of arrival for each detected light pulse; and a controller that generates an ordered sequence of frames. The controller generates a launch signal at the start of each frame and records information specifying a time of arrival relative to the start time for all light pulses received by the receiver until a stop time. After the stop time, the controller waits for the interframe delay time before generating another launch signal. The interframe delay time is different for each frame in the sequence of frames. The controller determines a distance between the transmitter and an object from the recorded information.
    Type: Application
    Filed: December 7, 2018
    Publication date: May 14, 2020
    Applicant: BAE Systems Imaging Solutions Inc.
    Inventors: Alberto M. Magnani, Calvin B. Ward
  • Patent number: 10641870
    Abstract: A LIDAR system and a method for operating a LIDAR system are disclosed. The LIDAR system broadly includes a transmitter that that emits a light pulse in response to a launch signal, a receiver that detects light pulses and determines a time of arrival for each detected light pulse; and a controller that generates an ordered sequence of frames. The controller generates a launch signal at the start of each frame and records information specifying a time of arrival relative to the start time for all light pulses received by the receiver until a stop time. After the stop time, the controller waits for the interframe delay time before generating another launch signal. The interframe delay time is different for each frame in the sequence of frames. The controller determines a distance between the transmitter and an object from the recorded information.
    Type: Grant
    Filed: December 7, 2018
    Date of Patent: May 5, 2020
    Assignee: BAE Systems Imaging Solutions Inc.
    Inventors: Alberto M. Magnani, Calvin B. Ward
  • Patent number: 10484618
    Abstract: An imaging array having a plurality of pixel sensors connected to a bit line is disclosed. Each pixel sensor includes a capacitive overflow pixel sensor characterized by an overflow capacitor having a switching terminal, and a floating diffusion node, a buffer amplifier that connects the floating diffusion node to a bit line in response to row select signal, and a switch that connects the switching terminal to either ground or a boost voltage. The imaging array also includes a switch controller that controls the switch and is connected to the bit line, the switch controller determining a voltage on the bit line, the switch controller connecting the switching terminal to the boost voltage during an exposure of the pixel sensor to light and to either ground or the boost voltage during a readout of charge stored on the overflow capacitor depending on the voltage on the bit line.
    Type: Grant
    Filed: October 24, 2018
    Date of Patent: November 19, 2019
    Assignee: BAE Systems Imaging Solutions Inc.
    Inventors: Hung T. Do, Chenguang Gong, Paul G. Lim, Alberto M. Magnani
  • Publication number: 20190335130
    Abstract: An imaging array and method for using the same that are adapted for backside illuminated imaging arrays utilizing a global shutter are disclosed. The imaging array includes a plurality of pixel sensors having an ordered array of pixel sensors. Each pixel sensor includes a main photodiode and a correction photodiode. A controller resets all of the main photodiodes at a first time that is the same for all of the pixel sensors, resets all of the correction photodiodes at a second time that is the same for all of the pixel sensors after the first time, and sequentially reads out the pixel sensors. The pixel sensor is read out at a third time that is different for different ones of the pixel sensors. A correction charge is measured that corrects for the different readout times.
    Type: Application
    Filed: January 25, 2017
    Publication date: October 31, 2019
    Applicant: BAE Systems Imaging Solutions Inc.
    Inventors: Hung T. Do, Chenguang Gong, Alberto M. Magnani
  • Publication number: 20190166291
    Abstract: An apparatus for taking moving pictures, a method for taking moving pictures, and a novel pixel sensor array are disclosed. The apparatus includes a rectangular imaging array, a plurality of column processing circuits, and a controller. The rectangular imaging array is characterized by a plurality of rows and columns of UHDR pixel sensors and a plurality of readout lines, and a plurality of row select lines. Each column processing circuit is connected to a corresponding one of the plurality of readout lines. The controller causes the rectangular imaging array to measure a plurality of images of a scene that is illuminated by a pulsating light source characterized by an illumination period and a dark period. Each of the images is generated in a frame period which includes an exposure period and a dead period, the dead period being less than the dark period.
    Type: Application
    Filed: November 30, 2017
    Publication date: May 30, 2019
    Applicant: BAE Systems Imaging Solutions Inc.
    Inventors: Alberto M. Magnani, Christopher R. Adams, Calvin B. Ward
  • Patent number: 10237501
    Abstract: The present invention includes an imaging apparatus that includes a two dimensional array of pixel sensors. Each pixel sensor includes a main photodiode, an autofocus photodiode, and a microlens that concentrates light onto the main photodiode and the autofocus photodiode. The imaging array of pixel sensors includes first and second autofocus arrays of pixel sensors, the pixel sensors in the first autofocus array of pixel sensors having the autofocus photodiodes positioned such that each autofocus photodiode receives light preferentially from one half of the microlens in that pixel sensor, and the pixel sensors in the second autofocus array of pixel sensors having each autofocus photodiode positioned such that each autofocus photodiode receives light preferentially from the other half of the microlens in that pixel sensor. The autofocus photodiodes can be constructed from the parasitic photodiodes associated with the floating diffusion nodes in each pixel sensor or conventional photodiodes.
    Type: Grant
    Filed: February 28, 2017
    Date of Patent: March 19, 2019
    Assignee: BAE Systems Imaging Solutions Inc.
    Inventors: Bo Mu, Alberto M. Magnani
  • Publication number: 20180249106
    Abstract: The present invention includes an imaging apparatus that includes a two dimensional array of pixel sensors. Each pixel sensor includes a main photodiode, an autofocus photodiode, and a microlens that concentrates light onto the main photodiode and the autofocus photodiode. The imaging array of pixel sensors includes first and second autofocus arrays of pixel sensors, the pixel sensors in the first autofocus array of pixel sensors having the autofocus photodiodes positioned such that each autofocus photodiode receives light preferentially from one half of the microlens in that pixel sensor, and the pixel sensors in the second autofocus array of pixel sensors having each autofocus photodiode positioned such that each autofocus photodiode receives light preferentially from the other half of the microlens in that pixel sensor. The autofocus photodiodes can be constructed from the parasitic photodiodes associated with the floating diffusion nodes in each pixel sensor or conventional photodiodes.
    Type: Application
    Filed: February 28, 2017
    Publication date: August 30, 2018
    Inventors: Bo Mu, Alberto M. Magnani
  • Patent number: 10057530
    Abstract: An apparatus having a rectangular imaging array characterized by a plurality of pixel sensors and a plurality of readout lines is disclosed. The apparatus has a plurality of column processing circuits, each column processing circuit being connected to a corresponding one of the readout lines and a plurality of signal injectors, one signal injector being connected to each of the readout lines. Each signal injector causes one of a predetermined number of voltages to be coupled to that readout line. An exposure for each of the pixel sensors is determined during image recording periods. The signal injectors inject a plurality of calibration voltages into the readout lines during calibration periods, and determines a gain function of an amplifier in one of the column processing circuits by measuring an output of the amplifier for the plurality of calibration voltages, the calibration period is between the imaging recording periods.
    Type: Grant
    Filed: August 18, 2016
    Date of Patent: August 21, 2018
    Assignee: BAE Systems Imaging Solutions Inc.
    Inventors: Bo Mu, Alberto M. Magnani, Stephen W. Mims
  • Publication number: 20180191979
    Abstract: An apparatus having a rectangular imaging array characterized by a plurality of pixel sensors and a plurality of readout lines is disclosed. The apparatus has a plurality of column processing circuits, each column processing circuit being connected to a corresponding one of the readout lines and a plurality of signal injectors, one signal injector being connected to each of the readout lines. Each signal injector causes one of a predetermined number of voltages to be coupled to that readout line. An exposure for each of the pixel sensors is determined during image recording periods. The signal injectors inject a plurality of calibration voltages into the readout lines during calibration periods, and determines a gain function of an amplifier in one of the column processing circuits by measuring an output of the amplifier for the plurality of calibration voltages, the calibration period is between the imaging recording periods.
    Type: Application
    Filed: August 18, 2016
    Publication date: July 5, 2018
    Inventors: Bo Mu, Alberto M. Magnani, Stephen W. Mims
  • Patent number: 9933300
    Abstract: A pixel comprises a high-response photodiode that collects photocharge, a first transfer gate that enables the charge to be transferred off the high-response photodiode, completely emptying it onto a low-response photodiode, a second transfer gate enables the charge to be transferred off the low-response photodiode, completely emptying it onto floating diffusion, a third transfer gate for anti-blooming; the floating diffusion collects the transferred charge creating a change of voltage, a means of resetting the floating diffusion. A source-follower is modulated by the voltage on floating diffusion to control bit-line voltage and column-amplifier output. In examples, photocharge is integrated onto both the high-response photodiode and onto the low-response photodiode.
    Type: Grant
    Filed: February 23, 2016
    Date of Patent: April 3, 2018
    Assignee: BAE Systems Imaging Solutions Inc.
    Inventors: Hung T Do, Alberto M Magnani, R Daniel McGrath
  • Publication number: 20170241835
    Abstract: A pixel comprises a high-response photodiode that collects photocharge, a first transfer gate that enables the charge to be transferred off the high-response photodiode, completely emptying it onto a low-response photodiode, a second transfer gate enables the charge to be transferred off the low-response photodiode, completely emptying it onto floating diffusion, a third transfer gate for anti-blooming; the floating diffusion collects the transferred charge creating a change of voltage, a means of resetting the floating diffusion. A source-follower is modulated by the voltage on floating diffusion to control bit-line voltage and column-amplifier output. In examples, photocharge is integrated onto both the high-response photodiode and onto the low-response photodiode.
    Type: Application
    Filed: February 23, 2016
    Publication date: August 24, 2017
    Inventors: Hung T. Do, Alberto M. Magnani, R. Daniel McGrath