Patents by Inventor Andrew Kunil Choe

Andrew Kunil Choe 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: 20250167799
    Abstract: In one example, a system comprises a vector-by-matrix multiplication array comprising an array of non-volatile memory cells arranged in rows and columns; and a sigma-delta analog-to-digital converter to receive a current from a column of the vector-by-matrix multiplication array and to generate a digital output in response to the current.
    Type: Application
    Filed: January 29, 2024
    Publication date: May 22, 2025
    Inventors: Hieu Van Tran, Andrew Kunil Choe, Hoa Vu
  • Publication number: 20250068900
    Abstract: In one example, a system comprises a vector-by-matrix multiplication array comprising non-volatile memory cells arranged into rows and columns, a first set of columns storing W+ weights and a second set of columns storing W? weights; and an output circuit to receive a first current from a respective column in the first set of columns and a second current from a respective column in the second set of columns and to generate a first voltage and a second voltage, the output circuit comprising a first current-to-voltage converter comprising a first integration capacitor to provide the first voltage equal to an initial voltage minus a first discharge value due to the first current, and a second current-to-voltage converter comprising a second integration capacitor to provide the second voltage equal to the initial voltage minus a second discharge value due to the second current.
    Type: Application
    Filed: November 3, 2023
    Publication date: February 27, 2025
    Inventors: HIEU VAN TRAN, ANDREW KUNIL CHOE, HOA VU
  • Patent number: 8917098
    Abstract: Provided are a converter circuit and a method of driving the same. The converter circuit includes: an input unit receiving a conversion target signal; a detection unit receiving a conversion target signal for each interval from the input unit, sampling the conversion target signal for each interval according to a plurality of timings to calculate an average value for each interval, and outputting a comparison unit input signal by using the average value for each interval; and a comparison unit comparing the comparison unit input signal with a predetermined reference signal to output a comparison result value.
    Type: Grant
    Filed: August 25, 2011
    Date of Patent: December 23, 2014
    Assignee: LG Innotek Co., Ltd.
    Inventor: Andrew Kunil Choe
  • Patent number: 8508306
    Abstract: A relaxation oscillator and a method for offset cancellation in a relaxation oscillator. The relaxation oscillator comprises two comparator units, each comparator unit comprising a comparator element and a memory element; and a switch control generator coupled to each of the comparator units; wherein each comparator unit, in a reset state, stores an input-offset voltage on the memory element under the control of the switch control generator such that, in a comparison state, the input-offset voltage is applied to both inputs of the comparator for implementing an offset-free threshold.
    Type: Grant
    Filed: September 19, 2008
    Date of Patent: August 13, 2013
    Assignees: Agency for Science, Technology, and Research, Physical Logic AG
    Inventors: Andrew Kunil Choe, Minkyu Je, Bernal Oliver Daniel, David Nuttman
  • Publication number: 20130015861
    Abstract: Provided are a converter circuit and a method of driving the same. The converter circuit includes: an input unit receiving a conversion target signal; a detection unit receiving a conversion target signal for each interval from the input unit, sampling the conversion target signal for each interval according to a plurality of timings to calculate an average value for each interval, and outputting a comparison unit input signal by using the average value for each interval; and a comparison unit comparing the comparison unit input signal with a predetermined reference signal to output a comparison result value.
    Type: Application
    Filed: August 25, 2011
    Publication date: January 17, 2013
    Applicant: LG INNOTEK CO., LTD.
    Inventor: ANDREW KUNIL CHOE
  • Patent number: 8350217
    Abstract: Disclosed are a pixel, a pixel array, and an image sensor including the pixel array. The pixel includes a first photo-sensing unit to detect a visible light and an IR, and a second photo-sensing unit provided at one side of the first photo-sensing unit to detect a light in which the IR is blocked.
    Type: Grant
    Filed: April 29, 2011
    Date of Patent: January 8, 2013
    Assignee: LG Innotek Co., Ltd.
    Inventors: Seung Hoon Sa, Andrew Kunil Choe, Cheong Yong Park
  • Publication number: 20120256090
    Abstract: Disclosed are a pixel, a pixel array, and an image sensor including the pixel array. The pixel includes a first photo-sensing unit to detect a visible light and an IR, and a second photo-sensing unit provided at one side of the first photo-sensing unit to detect a light in which the IR is blocked.
    Type: Application
    Filed: April 29, 2011
    Publication date: October 11, 2012
    Applicant: LG INNOTEK CO., LTD.
    Inventors: SEUNG HOON SA, Andrew Kunil Choe, Cheong Yong Park
  • Publication number: 20120126906
    Abstract: A relaxation oscillator and a method for offset cancellation in a relaxation oscillator. The relaxation oscillator comprises two comparator units, each comparator unit comprising a comparator element and a memory element; and a switch control generator coupled to each of the comparator units; wherein each comparator unit, in a reset state, stores an input-offset voltage on the memory element under the control of the switch control generator such that, in a comparison state, the input-offset voltage is applied to both inputs of the comparator for implementing an offset-free threshold.
    Type: Application
    Filed: September 19, 2008
    Publication date: May 24, 2012
    Applicant: Agency for Science, Technology and Research
    Inventors: Andrew Kunil Choe, Minkyu Je, Bernal Oliver Daniel, David Nuttman
  • Publication number: 20120013351
    Abstract: A method for converting a sensor capacitance under parasitic capacitance conditions and a capacitance-to-voltage (CV) converter circuit for converting a sensor capacitance under parasitic capacitance conditions are provided. The method comprises the step of using a two stage operational amplifier (op-amp) in non-unity-gain configuration, wherein the two stage op-amp is chosen to be unstable in unity-gain configuration for reducing power consumption.
    Type: Application
    Filed: September 19, 2008
    Publication date: January 19, 2012
    Applicants: PHYSICAL LOGIC AG, AGENCY FOR SCIENCE, TECHNOLOGY AND RESEARCH
    Inventors: Bernal Olivier Daniel, Minkyu Je, Andrew Kunil Choe, David Nuttman