Patents by Inventor Chenguang Gong

Chenguang Gong 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: 11252353
    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: Grant
    Filed: June 29, 2017
    Date of Patent: February 15, 2022
    Assignee: BAE Systems Imaging Solutions Inc.
    Inventors: Hung T. Do, Chenguang Gong, Alberto M. Magnani
  • Patent number: 11107847
    Abstract: A pixel sensor, an imaging array that includes such pixel sensors, and a method for operating an imaging array are disclosed. The pixel sensor includes a transfer gate that connects a photodiode to a floating diffusion node in response to a transfer signal, a reset circuit, and a controller. The reset circuit is adapted to apply either a first potential or a second potential to the floating diffusion node, the second potential being less than the first potential. The controller is configured to cause the reset circuit to apply the first potential to the floating diffusion node while the transfer gate is conducting just prior to a start of an accumulation phase, and then apply the second potential to the floating diffusion node after the transfer gate is rendered non-conducting, the second potential is less than the first potential.
    Type: Grant
    Filed: April 19, 2019
    Date of Patent: August 31, 2021
    Assignee: BAE Systems Imaging Solutions Inc.
    Inventors: Hung T. Do, Chenguang Gong, Stephen W. Mims, Khai Nguyen
  • 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: 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: 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: 20200335538
    Abstract: A pixel sensor, an imaging array that includes such pixel sensors, and a method for operating an imaging array are disclosed. The pixel sensor includes a transfer gate that connects a photodiode to a floating diffusion node in response to a transfer signal, a reset circuit, and a controller. The reset circuit is adapted to apply either a first potential or a second potential to the floating diffusion node, the second potential being less than the first potential. The controller is configured to cause the reset circuit to apply the first potential to the floating diffusion node while the transfer gate is conducting just prior to a start of an accumulation phase, and then apply the second potential to the floating diffusion node after the transfer gate is rendered non-conducting, the second potential is less than the first potential.
    Type: Application
    Filed: April 19, 2019
    Publication date: October 22, 2020
    Applicant: BAE Systems Imaging Solutions Inc.
    Inventors: Hung T. Do, Chenguang Gong, Stephen W. Mims, Khai Nguyen
  • 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
  • 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
  • Patent number: 9206479
    Abstract: Disclosed are compositions and methods for identifying binding sites of targets of Stau1-mediated mRNA decay; methods and compositions for treating subjects with conditions resulting from Stau1-mediated mRNA decay, and method of screening for therapeutic agents. Also disclosed is the new pathway as a means for cells to down-regulate the expression of Stau1-binding mRNAs.
    Type: Grant
    Filed: February 9, 2012
    Date of Patent: December 8, 2015
    Assignee: University of Rochester
    Inventors: Lynne E. Maquat, Chenguang Gong
  • Patent number: 8897342
    Abstract: A master modem is configured to generate a carrier signal for transmission over a wired connection. A slave modem is configured to change an impedance of the wired connection to alter generation of the carrier signal by the master modem. The impedance of the wired connection is changed based on data to be provided by the slave modem. The master modem can demodulate its own carrier signal to obtain the data provided by the slave modem. The impedance of the wired connection could be changed by changing an impedance of a transformer winding or inductor of the slave modem, where the transformer winding or inductor is coupled to the wired connection. The impedance of the wired connection could also be changed by changing a reactance of a circuit coupled to the wired connection.
    Type: Grant
    Filed: August 4, 2011
    Date of Patent: November 25, 2014
    Assignee: National Semiconductor Corporation
    Inventors: Lawrence H. Zuckerman, Perry I. Tsao, Thomas Yang, Keiichi McGuire, Chenguang Gong, Ravichander Bairi
  • Publication number: 20130317087
    Abstract: Disclosed are compositions and methods for identifying binding sites of targets of Staul-mediated mRNA decay; methods and compositions for treating subjects with conditions resulting from Staul-mediated mRNA decay, and method of screening for therapeutic agents. Also disclosed is the new pathway as a means for cells to down-regulate the expression of Staul-binding mRNAs.
    Type: Application
    Filed: February 9, 2012
    Publication date: November 28, 2013
    Applicant: UNIVERSITY OF ROCHESTER
    Inventors: Lynne E. Maquat, Chenguang Gong
  • Publication number: 20130034137
    Abstract: A master modem is configured to generate a carrier signal for transmission over a wired connection. A slave modem is configured to change an impedance of the wired connection to alter generation of the carrier signal by the master modem. The impedance of the wired connection is changed based on data to be provided by the slave modem. The master modem can demodulate its own carrier signal to obtain the data provided by the slave modem. The impedance of the wired connection could be changed by changing an impedance of a transformer winding or inductor of the slave modem, where the transformer winding or inductor is coupled to the wired connection. The impedance of the wired connection could also be changed by changing a reactance of a circuit coupled to the wired connection.
    Type: Application
    Filed: August 4, 2011
    Publication date: February 7, 2013
    Applicant: NATIONAL SEMICONDUCTOR CORPORATION
    Inventors: Lawrence H. Zuckerman, Perry I. Tsao, Thomas Yang, Keiichi McGuire, Chenguang Gong, Ravichander Bairi