Patents by Inventor Byung-Geun Lee

Byung-Geun Lee 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: 11942025
    Abstract: A display device includes a substrate, a plurality of pixel electrodes on the substrate and spaced apart from each other, a plurality of light-emitting elements on the plurality of pixel electrodes, respectively, and a common electrode layer on the plurality of light-emitting elements and to which a common voltage is applied. The plurality of light-emitting elements include a first light-emitting element that is configured to emit first light according to a first driving current and a second light-emitting element that is configured to emit second light according to a second driving current. An active layer of the first light-emitting element is the same as an active layer of the second light-emitting element.
    Type: Grant
    Filed: June 30, 2022
    Date of Patent: March 26, 2024
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jin Wan Kim, Seung Geun Lee, Sang Jo Kim, Su Jeong Kim, Young Jin Song, Byung Ju Lee
  • Patent number: 11223785
    Abstract: A compressive sensing image sensor includes: a pixel array; and a readout circuit configured to receive pixel data on a shot image in an analogue form, and to process the pixel data, wherein the pixel array includes a plurality of blocks each having a plurality of pixels and arranged in an array form, wherein the circuit includes: a compressive sensing multiplexer to which a plurality of pixel data outputted from a corresponding block from among the plurality of blocks are inputted; an LFSR configured to arbitrarily select at least one pixel data from the plurality of pixel data inputted to the compressive sensing multiplexer; and a delta-sigma ADC configured to receive the at least one pixel data selected by the LFSR, to delta-sigma modulate the received at least one pixel data, and to generate compressive sensing data for restoring an image of the corresponding block from among the shot images.
    Type: Grant
    Filed: September 3, 2018
    Date of Patent: January 11, 2022
    Assignee: GWANGJU INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Byung Geun Lee, Jin Ho Kim, Hyun Keun Lee, Woo Tae Kim
  • Patent number: 11050965
    Abstract: Disclosed is an image sensor including pixels, and an analog digital converter configured to select output values of the pixels using an analog multiplexer and to simultaneously perform a convolution operation and conversion into a digital signal using a delta-sigma ADC. The size of processed data is reduced, and power consumption is reduced, and thus the image sensor is advantageously applied to a portable device.
    Type: Grant
    Filed: March 18, 2020
    Date of Patent: June 29, 2021
    Assignee: Gwangju Institute of Science and Technology
    Inventors: Wootae Kim, Byung-Geun Lee, Hyun-Keun Lee, Jung-Gyun Kim
  • Publication number: 20200344428
    Abstract: A compressive sensing image sensor includes: a pixel array; and a readout circuit configured to receive pixel data on a shot image in an analogue form, and to process the pixel data, wherein the pixel array includes a plurality of blocks each having a plurality of pixels and arranged in an array form, wherein the circuit includes: a compressive sensing multiplexer to which a plurality of pixel data outputted from a corresponding block from among the plurality of blocks are inputted; an LFSR configured to arbitrarily select at least one pixel data from the plurality of pixel data inputted to the compressive sensing multiplexer; and a delta-sigma ADC configured to receive the at least one pixel data selected by the LFSR, to delta-sigma modulate the received at least one pixel data, and to generate compressive sensing data for restoring an image of the corresponding block from among the shot images.
    Type: Application
    Filed: September 3, 2018
    Publication date: October 29, 2020
    Inventors: Byung Geun LEE, Jin Ho KIM, Hyun Keun LEE, Woo Tae KIM
  • Patent number: 9489617
    Abstract: A neuromorphic system includes: an unsupervised learning hardware device configured to perform learning in an unsupervised manner, the unsupervised learning hardware device performing grouping on input signals; and a supervised learning hardware device configured to perform learning in a supervised manner with labeled values, the supervised learning hardware device performing clustering on input signals.
    Type: Grant
    Filed: July 7, 2015
    Date of Patent: November 8, 2016
    Assignee: GWANGJU INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Myong-Lae Chu, Byung-Geun Lee, Moon-Gu Jeon, Ahmad Muqeem Sheri
  • Publication number: 20160004964
    Abstract: A neuromorphic system includes: an unsupervised learning hardware device configured to perform learning in an unsupervised manner, the unsupervised learning hardware device performing grouping on input signals; and a supervised learning hardware device configured to perform learning in a supervised manner with labeled values, the supervised learning hardware device performing clustering on input signals.
    Type: Application
    Filed: July 7, 2015
    Publication date: January 7, 2016
    Inventors: Myong-Lae CHU, Byung-Geun LEE, Moon-Gu JEON, Ahmad Muqeem SHERI
  • Publication number: 20150154469
    Abstract: The present invention relates to a pattern recognition method and a pattern recognition apparatus for the same. According to the present invention, a pattern recognition method comprises: receiving data of a recognition object having a pattern; and recognizing the pattern using an electronic device having a synapse characteristic including a plurality of RRAMs (Resistance Random Access Memories), wherein each RRAM includes a variable resistance layer and has multiple memory states depending on variations in resistance of the variable resistance layer.
    Type: Application
    Filed: December 1, 2014
    Publication date: June 4, 2015
    Inventors: Sang Su Park, Hyun Sang Hwang, Byoung Hun Lee, Byung Geun Lee, Bo Reom Lee, Moon Gu Jeon
  • Patent number: 7265705
    Abstract: A first stage circuit for a high-speed, high-resolution pipeline analog-to-digital converter (ADC) implements operational amplifier (opamp) sharing and capacitor sharing to combine the sample-and-hold (SAH) and the MDAC (multiplying digital to analog converter) functions in the first residue stage of the pipeline ADC. In one embodiment, the first stage circuit includes a sampling capacitor, an amplifier, a feedback capacitor array and a comparator. The sampling capacitor and the feedback capacitor array are configured by switches to operate in a sampling/MDAC mode, a discharge mode and a hold mode. In this manner, the sample-and-hold operation and the MDAC operation are merged into the first stage circuit of the pipeline ADC to achieve low power and high speed of operation.
    Type: Grant
    Filed: August 10, 2006
    Date of Patent: September 4, 2007
    Assignee: National Semiconductor Corporation
    Inventors: Byung-Geun Lee, Byung-Moo Min