Patents by Inventor Huaijin Chen

Huaijin Chen 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: 20230410341
    Abstract: A method for a passive single-viewpoint 3D imaging system comprises capturing an image from a camera having one or more phase masks. The method further includes using a reconstruction algorithm, for estimation of a 3D or depth image.
    Type: Application
    Filed: April 26, 2023
    Publication date: December 21, 2023
    Applicants: William Marsh Rice University, Carnegie Mellon University
    Inventors: Yicheng Wu, Vivek Boominathan, Huaijin Chen, Aswin C. Sankaranarayanan, Ashok Veeraraghavan
  • Patent number: 11676294
    Abstract: A method for a passive single-viewpoint 3D imaging system comprises capturing an image from a camera having one or more phase masks. The method further includes using a reconstruction algorithm, for estimation of a 3D or depth image.
    Type: Grant
    Filed: May 1, 2020
    Date of Patent: June 13, 2023
    Assignees: William Marsh Rice University, Carnegie Mellon University
    Inventors: Yicheng Wu, Vivek Boominathan, Huaijin Chen, Aswin C. Sankaranarayanan, Ashok Veeraraghavan
  • Publication number: 20220224881
    Abstract: A method, apparatus and device for camera calibration, and a storage medium. A camera to be calibrated for performing depth estimation on a scene is determined. A first correlation function for characterizing a correlation between a sensor modulation signal of the camera to be calibrated and a first modulated light emission signal is determined. A second correlation function for characterizing an actual correlation function produced by the camera to be calibrated is determined. A calibrated impulse response based on the first correlation function and the second correlation function is determined. The camera to be calibrated is calibrated based on the calibrated impulse response, to obtain the calibrated camera.
    Type: Application
    Filed: March 29, 2022
    Publication date: July 14, 2022
    Inventors: Felipe GUTIERREZ-BARRAGAN, Huaijin CHEN, Jinwei GU
  • Patent number: 10756613
    Abstract: Embodiments of the present disclosure provide a circuit structure including: a first transistor having a gate terminal, a source terminal, a drain terminal, and a back-gate terminal electrically coupled to an adjustable voltage source. The gate terminal of the first transistor is electrically coupled to a first node having a first bias voltage. A second transistor has a gate terminal, a source terminal electrically coupled to the drain terminal of the first transistor, a drain terminal, and a back-gate terminal electrically connected to the adjustable voltage source. The gate terminal of the second transistor is electrically coupled to a second node having a second bias voltage. The adjustable voltage source is selectable between a first voltage and a second voltage to control a threshold voltage of the first transistor and a threshold voltage of the second transistor.
    Type: Grant
    Filed: February 1, 2018
    Date of Patent: August 25, 2020
    Assignee: Marvell Asia Pte, Ltd.
    Inventors: Thomas G. Mckay, Huaijin Chen
  • Patent number: 10593020
    Abstract: An image processing method extracts consecutive input blurry frames from a video, and generates sharp frames corresponding to the input blurry frames. An optical flow is determined between the sharp frames, and the optical flow is used to compute a per-pixel blur kernel. The blur kernel is used to reblur each of the sharp frames into a corresponding re-blurred frame. The re-blurred frame is used to fine-tune the deblur network by minimizing the distance between the re-blurred frame and the input blurry frame.
    Type: Grant
    Filed: February 2, 2018
    Date of Patent: March 17, 2020
    Assignee: NVIDIA Corp.
    Inventors: Jinwei Gu, Orazio Gallo, Ming-Yu Liu, Jan Kautz, Huaijin Chen
  • Publication number: 20190244331
    Abstract: An image processing method extracts consecutive input blurry frames from a video, and generates sharp frames corresponding to the input blurry frames. An optical flow is determined between the sharp frames, and the optical flow is used to compute a per-pixel blur kernel. The blur kernel is used to reblur each of the sharp frames into a corresponding re-blurred frame. The re-blurred frame is used to fine-tune the deblur network by minimizing the distance between the re-blurred frame and the input blurry frame.
    Type: Application
    Filed: February 2, 2018
    Publication date: August 8, 2019
    Inventors: Jinwei Gu, Orazio Gallo, Ming-Yu Liu, Jan Kautz, Huaijin Chen
  • Publication number: 20190238044
    Abstract: Embodiments of the present disclosure provide a circuit structure including: a first transistor having a gate terminal, a source terminal, a drain terminal, and a back-gate terminal electrically coupled to an adjustable voltage source. The gate terminal of the first transistor is electrically coupled to a first node having a first bias voltage. A second transistor has a gate terminal, a source terminal electrically coupled to the drain terminal of the first transistor, a drain terminal, and a back-gate terminal electrically connected to the adjustable voltage source. The gate terminal of the second transistor is electrically coupled to a second node having a second bias voltage. The adjustable voltage source is selectable between a first voltage and a second voltage to control a threshold voltage of the first transistor and a threshold voltage of the second transistor.
    Type: Application
    Filed: February 1, 2018
    Publication date: August 1, 2019
    Inventors: Thomas G. Mckay, Huaijin Chen
  • Patent number: 7554408
    Abstract: An audio amplifier with an integrated asymmetric charge pump is provided. The audio amplifier receives VDD and VSS as power supply signals. The integrated charge pump is arranged to provide VSS from VDD, such that VSS is a negative voltage that is lower in magnitude than VDD.
    Type: Grant
    Filed: May 21, 2007
    Date of Patent: June 30, 2009
    Assignee: National Semiconductor Corporation
    Inventors: Huaijin Chen, Marcellus Chen, Ansuya P. Bhatt, Raminder Jit Singh
  • Publication number: 20080290949
    Abstract: An audio amplifier with an integrated asymmetric charge pump is provided. The audio amplifier receives VDD and VSS as power supply signals. The integrated charge pump is arranged to provide VSS from VDD, such that VSS is a negative voltage that is lower in magnitude than VDD.
    Type: Application
    Filed: May 21, 2007
    Publication date: November 27, 2008
    Applicant: National Semiconductor Corporation
    Inventors: Huaijin Chen, Marcellus Chen, Ansuya P. Bhatt, Raminder Jit Singh