Patents by Inventor Won-Ho Choi

Won-Ho Choi 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: 12082462
    Abstract: A display device includes a plurality of first constant voltage lines extended along a first direction and arranged along a second direction crossing the first direction, a plurality of second constant voltage lines extended along the second direction and arranged along the first direction, a first overlap area in which the plurality of first constant voltage lines and the plurality of second constant voltage lines overlap and contact each other, and a second overlap area in which the plurality of first constant voltage lines and the plurality of second constant voltage lines overlap and are insulated from each other.
    Type: Grant
    Filed: January 3, 2022
    Date of Patent: September 3, 2024
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Seung Hwan Cho, Ji Ryun Park, Ki Ho Bang, Won Suk Choi, Yoon Sun Choi
  • Patent number: 12079733
    Abstract: Anon-volatile memory structure capable of storing weights for layers of a deep neural network (DNN) and perform an inferencing operation within the structure is presented. An in-array multiplication can be performed between multi-bit valued inputs, or activations, for a layer of the DNN and multi-bit valued weights of the layer. Each bit of a weight value is stored in a binary valued memory cell of the memory array and each bit of the input is applied as a binary input to a word line of the array for the multiplication of the input with the weight. To perform a multiply and accumulate operation, the results of the multiplications are accumulated by adders connected to sense amplifiers along the bit lines of the array. The adders can be configured to multiple levels of precision, so that the same structure can accommodate weights and activations of 8-bit, 4-bit, and 2-bit precision.
    Type: Grant
    Filed: July 28, 2020
    Date of Patent: September 3, 2024
    Assignee: SanDisk Technologies LLC
    Inventors: Tung Thanh Hoang, Won Ho Choi, Martin Lueker-Boden
  • Publication number: 20240270979
    Abstract: Provided is a surface-treated steel sheet including: a steel sheet; and a corrosion-resistant film layer formed on at least one surface of the steel sheet. The corrosion-resistant film layer includes a product formed by a hydrolysis reaction of silica and an alkoxy silane and an acrylate-based polymer, comprises 25 to 65 wt % of carbon (C), 20 to 70 wt % of silicon (Si), and 1 to 40 wt % of oxygen (O), and in the corrosion-resistant film layer, a ratio of silicon (Si) to oxygen (O) (Si—O bonding) and silicon (Si) to carbon (C) (Si—C bonding) is 80 to 95 wt %:5 to 20 wt %.
    Type: Application
    Filed: March 22, 2024
    Publication date: August 15, 2024
    Inventors: Chang-Hoon CHOI, Dong-Yun KIM, Min-Ho JO, Jae-Duck KO, Won-Ho SON, Jong-Hwa KIM
  • Publication number: 20240271990
    Abstract: A vibration measurement error determination method according to an embodiment of the present invention comprises: a vibration data acquisition step for acquiring vibration data by measuring a vibration generated in a structure; a first determination step for determining, on the basis of a preset error data selection rule, whether the vibration data is data generated by a measurement error; a second determination step for using a machine-learning algorithm to determine whether the vibration data is data generated by a measurement error; and a final determination step for determining, on the basis of the results determined in the first determination step and the second determination step, whether the vibration data is data generated by a measurement error.
    Type: Application
    Filed: November 15, 2021
    Publication date: August 15, 2024
    Inventors: Min Ho KIM, Dae Woong KIM, Song Hae YE, Won Kyu LEE, Ju Sik KIM, Byeong Suk MOON, Sin Gyu KANG, Byeong Keun CHOI, Hyeon Tak YU
  • Patent number: 12059805
    Abstract: A layer jamming driving device is proposed, which includes an enclosure made of a variable material; and layer stacked structures having a plurality of layers stacked inside the enclosure, wherein the layer stacked structures can be coupled so as to be slidable and rotatable with respect to each other.
    Type: Grant
    Filed: June 28, 2019
    Date of Patent: August 13, 2024
    Assignee: CHUNGANG UNIVERSITY INDUSTRY-ACADEMIC COOPERATION FOUNDATION
    Inventors: Dong Jun Shin, Won Ho Choi
  • Patent number: 12054643
    Abstract: Provided is a composition for steel sheet surface coating, the composition comprising colloidal silica, a silane, a monomer, an organic resin, an acidity adjuster, a long-term corrosion-resistance improver, and a solvent; and a steel sheet coated with the composition. The steel sheet has excellent acid resistance, and maintains thickness uniformity thereof even when exposed to an acid for an extended period of time.
    Type: Grant
    Filed: August 7, 2019
    Date of Patent: August 6, 2024
    Assignees: POSCO CO., LTD, NOROO COIL COATINGS CO., LTD.
    Inventors: Chang-Hoon Choi, Dong-Yun Kim, Won-Ho Son, Hee-Jea Eun, Jae-Duck Ko
  • Patent number: 12053574
    Abstract: The present invention relates to a dry powder inhaler. The dry powder inhaler includes an inhaler housing, a drug container configured to be provided in the inhaler housing and accommodate the dry powder drug, a drug inlet configured to be disposed above the drug container and through which the dry powder drug is inhaled, and a mesh network configured to be installed on a path of the drug inlet and have a mesh part for collision with the dry powder drug formed therein.
    Type: Grant
    Filed: June 29, 2017
    Date of Patent: August 6, 2024
    Inventors: Won Ho Kang, Youn Woong Choi, Dae Chul Ha, Seung Jin Yang, Gweon Hee Yu, Kyu Yeol Nam, Kyu Chul Jang
  • Publication number: 20240162113
    Abstract: In one example, an electronic device comprises a substrate comprising a conductive structure and an inner side and an outer side, a first electronic component over the inner side of the substrate and coupled with the conductive structure, a lid over the substrate and the first electronic component and comprising a first hole in the lid, and a thermal interface material between the first electronic component and the lid. The thermal interface material is in the first hole. Other examples and related methods are also disclosed herein.
    Type: Application
    Filed: November 11, 2022
    Publication date: May 16, 2024
    Applicants: Amkor Technology Singapore Holding Pte. Ltd., Amkor Technology Singapore Holding Pte. Ltd.
    Inventors: Dong Hyeon Park, Yun Ah Kim, Seok Ho Na, Won Ho Choi, Dong Su Ryu, Jo Hyun Bae, Min Jae Kong, Jin Young Khim, Jae Yeong Bae, Dong Hee Kang
  • Patent number: 11931978
    Abstract: An anti-icing honeycomb core composite manufactured by forming an electromagnetic wave absorption layer by using dielectric fiber, molding the electromagnetic wave absorption layer into a honeycomb core structure by using a molded part including a first base, a second base, and an inner block, hardening the honeycomb core structure, and removing the molded part. The molding step includes first stacking, on the first base including a plurality of grooves in which the inner blocks each having a hexagonal column shape are able to be seated, a plurality of the inner blocks and a plurality of the electromagnetic wave absorption layers as the honeycomb core structure so that the electromagnetic wave absorption layer is disposed between the plurality of inner blocks, and second stacking covering the inner blocks and the electromagnetic wave absorption layers stacked on the first base with the second base having the same shape as the first base.
    Type: Grant
    Filed: December 22, 2020
    Date of Patent: March 19, 2024
    Assignee: INDUSTRY-ACADEMIC COOPERATION FOUNDATION GYEONGSANG NATIONAL UNIVERSITY
    Inventors: Young Woo Nam, Hyeon Seok Choe, Jin Hwe Kweon, Rho Shin Myong, Won Ho Choi
  • Patent number: 11927309
    Abstract: Disclosed is an automatic alignment method of a high-pressure gas container in which a high-pressure gas container is loaded on a lift of a cabinet so as to supply a gas from a fabrication (FAB) process facility of a semiconductor to a wafer production line, and then, the high-pressure gas container loaded on the lift is raised, and an end cap of the high-pressure gas container and the center of a connector holder of a gas pipe are automatically aligned.
    Type: Grant
    Filed: December 10, 2018
    Date of Patent: March 12, 2024
    Assignee: AMT CO., LTD.
    Inventors: Won Ho Choi, Chan Woo Kim
  • Publication number: 20230395175
    Abstract: Devices and methods include transmitting loopback signals for monitoring operation of a memory device. In some embodiments, a memory device may receive a system clock signal from a host device and may generate an internal clock signal based at least in part on the system clock signal. In some embodiments, the memory device may generate a loopback signal based at least in part on the internal clock signal and may transmit the loopback signal via a loopback datapath associated with the memory device. A host device may compare the internal clock signal and the system clock signal to determine a fidelity of the internal clock signal. Termination values of the memory device may be adjusted based on the determined fidelity of the internal clock signal.
    Type: Application
    Filed: May 4, 2023
    Publication date: December 7, 2023
    Inventors: Matthew Alan Prather, Won Ho Choi
  • Patent number: 11837733
    Abstract: The present disclosure relates to a sub-nanometric particles-metal organic framework complex including a multi-shell hollow metal organic framework (MOF) and sub-nanometric particles (SNPs), and a method of preparing the same.
    Type: Grant
    Filed: April 13, 2021
    Date of Patent: December 5, 2023
    Assignee: KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Jeung Ku Kang, Won Ho Choi, Byeong Cheul Moon, Dong Gyu Park, Jae Won Choi, Keon-Han Kim
  • Patent number: 11741188
    Abstract: An innovative low-bit-width device may include a first digital-to-analog converter (DAC), a second DAC, a plurality of non-volatile memory (NVM) weight arrays, one or more analog-to-digital converters (ADCs), and a neural circuit. The first DAC is configured to convert a digital input signal into an analog input signal. The second DAC is configured to convert a digital previous hidden state (PHS) signal into an analog PHS signal. NVM weight arrays are configured to compute vector matrix multiplication (VMM) arrays based on the analog input signal and the analog PHS signal. The NVM weight arrays are coupled to the first DAC and the second DAC. The one or more ADCs are coupled to the plurality of NVM weight arrays and are configured to convert the VMM arrays into digital VMM values. The neural circuit is configured to process the digital VMM values into a new hidden state.
    Type: Grant
    Filed: July 8, 2021
    Date of Patent: August 29, 2023
    Assignee: WESTERN DIGITAL TECHNOLOGIES, INC.
    Inventors: Wen Ma, Pi-Feng Chiu, Minghai Qin, Won Ho Choi, Martin Lueker-Boden
  • Patent number: 11740687
    Abstract: Certain aspects of the present disclosure provide a method for performing multimode inferencing, comprising: receiving machine learning model input data from a requestor; processing the machine learning model input data with a machine learning model using processing hardware at a first power level to generate first output data; selecting a second power level for the processing hardware based on comparing the first output data to a threshold value; processing the machine learning model input data with the machine learning model using the processing hardware at the second power level to generate second output data; and sending second output data to the requestor.
    Type: Grant
    Filed: April 21, 2020
    Date of Patent: August 29, 2023
    Assignee: Western Digital Technologies, Inc.
    Inventors: Yongjune Kim, Cyril Guyot, Won Ho Choi
  • Patent number: 11721406
    Abstract: Methods and systems for testing memory systems are disclosed. A refresh rate for a test system including a number of memory devices may be controlled based on estimated power scenario of a memory system design. In response to performance of a number of refresh operations on the memory devices and based on the refresh rate, one or more conditions of the test system may be monitored to generate estimated performance data for the memory system design.
    Type: Grant
    Filed: August 6, 2021
    Date of Patent: August 8, 2023
    Assignee: Micron Technology, Inc.
    Inventors: Won Ho Choi, Randall J. Rooney
  • Publication number: 20230226785
    Abstract: An anti-icing honeycomb core composite manufactured by forming an electromagnetic wave absorption layer by using dielectric fiber, molding the electromagnetic wave absorption layer into a honeycomb core structure by using a molded part including a first base, a second base, and an inner block, hardening the honeycomb core structure, and removing the molded part. The molding step includes first stacking, on the first base including a plurality of grooves in which the inner blocks each having a hexagonal column shape are able to be seated, a plurality of the inner blocks and a plurality of the electromagnetic wave absorption layers as the honeycomb core structure so that the electromagnetic wave absorption layer is disposed between the plurality of inner blocks, and second stacking covering the inner blocks and the electromagnetic wave absorption layers stacked on the first base with the second base having the same shape as the first base.
    Type: Application
    Filed: December 22, 2020
    Publication date: July 20, 2023
    Inventors: Young Woo NAM, Hyeon Seok CHOE, Jin Hwe KWEON, Rho Shin MYONG, Won Ho CHOI
  • Patent number: 11662904
    Abstract: Methods and apparatus are disclosed for implementing principal component analysis (PCA) within a non-volatile memory (NVM) die of solid state drive (SSD) to reduce the dimensionality of machine learning data before the data is transferred to other components of the SSD, such as to a data storage controller equipped with a machine learning engine. The machine learning data may include, for example, training images for training an image recognition system in which the SSD is installed. In some examples, the on-chip PCA components of the NVM die are configured as under-the-array or next-to-the-array components. In other examples, one or more arrays of the NVM die are configured as multiplication cores for performing PCA matrix multiplication. In still other aspects, multiple NVM dies are arranged in parallel, each with on-chip PCA components to permit parallel concurrent on-chip processing of machine learning data.
    Type: Grant
    Filed: December 8, 2021
    Date of Patent: May 30, 2023
    Assignee: Western Digital Technologies, Inc.
    Inventors: Won Ho Choi, Yongjune Kim, Martin Lueker-Boden
  • Patent number: 11663471
    Abstract: Non-volatile memory structures for performing compute in memory inferencing for neural networks are presented. To improve performance, both in terms of speed and energy consumption, weight matrices are replaced with their singular value decomposition (SVD) and use of a low rank approximations (LRAs). The decomposition matrices can be stored in a single array, with the resultant LRA matrices requiring fewer weight values to be stored. The reduced sizes of the LRA matrices allow for inferencing to be performed more quickly and with less power. In a high performance and energy efficiency mode, a reduced rank for the SVD matrices stored on a memory die is determined and used to increase performance and reduce power needed for an inferencing operation.
    Type: Grant
    Filed: June 26, 2020
    Date of Patent: May 30, 2023
    Assignee: SanDisk Technologies LLC
    Inventors: Tung Thanh Hoang, Won Ho Choi, Martin Lueker-Boden
  • Patent number: 11657259
    Abstract: Techniques are presented for performing in-memory matrix multiplication operations for binary input, binary weight valued convolution neural network (CNN) inferencing. The weights of a filter are stored in pairs of memory cells of a storage class memory device, such as a ReRAM or phase change memory based devices. To reduce current consumption, the binary valued filters are transformed into ternary valued filters by taking sums and differences of binary valued filter pairs. The zero valued weights of the transformed filters are stored as a pair of high resistance state memory cells, reducing current consumption during convolution. The results of the in-memory multiplications are pair-wise combined to compensate for the filter transformations. To compensate for zero valued weights, a zero weight register stores the number of zero weights along each bit line and is used to initialize counter values for accumulating the multiplication operations.
    Type: Grant
    Filed: December 20, 2019
    Date of Patent: May 23, 2023
    Assignee: SanDisk Technologies LLC
    Inventors: Tung Thanh Hoang, Won Ho Choi, Martin Lueker-Boden
  • Patent number: 11625586
    Abstract: Use of a NAND array architecture to realize a binary neural network (BNN) allows for matrix multiplication and accumulation to be performed within the memory array. A unit synapse for storing a weight of a BNN is stored in a pair of series connected memory cells. A binary input is applied on a pair of word lines connected to the unit synapse to perform the multiplication of the input with the weight. The results of such multiplications are determined by a sense amplifier, with the results accumulated by a counter. The arrangement extends to ternary inputs to realize a ternary-binary network (TBN) by adding a circuit to detect 0 input values and adjust the accumulated count accordingly. The arrangement further extends to a ternary-ternary network (TTN) by allowing 0 weight values in a unit synapse, maintaining the number of 0 weights in a register, and adjusting the count accordingly.
    Type: Grant
    Filed: October 15, 2019
    Date of Patent: April 11, 2023
    Assignee: SanDisk Technologies LLC
    Inventors: Tung Thanh Hoang, Won Ho Choi, Martin Lueker-Boden