Patents by Inventor Chang Kyu Choi

Chang Kyu 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: 11723143
    Abstract: A system and method for dissipating heat from a package and reducing interference between signaling pins is disclosed. The system includes a circuit substrate that includes a dielectric layer and at least one metal layer having an external surface. A plurality of metal posts is disposed on the external surface that function to a least one of dissipate heat from the circuit substrate, shield interfering signals between the signaling pins, and interact with mounting substrates on corresponding componentry. One or more metal posts are merged, increasing the interference shielding and heat dissipation functions of the metal posts.
    Type: Grant
    Filed: April 27, 2022
    Date of Patent: August 8, 2023
    Assignee: Avago Technologies International Sales Pte. Limited
    Inventors: Chang Kyu Choi, Hyun Mo Ku, Sarah Kay Haney, Li Sun
  • Patent number: 11720658
    Abstract: A processor-implemented method of performing authentication includes obtaining a first biometric information of a user according to a first modality; calculating a first score based on the first biometric information; filtering the first score; determining whether the filtered first score satisfies a second condition; and selectively, based on a result of the determining, authenticating the user based on the first score and a first condition corresponding to the first modality. The second condition is different from the first condition.
    Type: Grant
    Filed: June 28, 2021
    Date of Patent: August 8, 2023
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jihye Kim, Seungju Han, Jaejoon Han, Chang Kyu Choi
  • Patent number: 11715329
    Abstract: Disclosed is a face verification method and apparatus. The method including analyzing a current frame of a verification image, determining a current frame state score of the verification image indicating whether the current frame is in a state predetermined as being appropriate for verification, determining whether the current frame state score satisfies a predetermined validity condition, and selectively, based on a result of the determining of whether the current frame state score satisfies the predetermined validity condition, extracting a feature from the current frame and performing verification by comparing a determined similarity between the extracted feature and a registered feature to a set verification threshold.
    Type: Grant
    Filed: December 4, 2020
    Date of Patent: August 1, 2023
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Changyong Son, Wonsuk Chang, Deoksang Kim, Dae-Kyu Shin, Byungin Yoo, Seungju Han, Jaejoon Han, Jinwoo Son, Chang Kyu Choi
  • Patent number: 11715011
    Abstract: A neural network recognition method includes obtaining a first neural network that includes layers and a second neural network that includes a layer connected to the first neural network, actuating a processor to compute a first feature map from input data based on a layer of the first neural network, compute a second feature map from the input data based on the layer connected to the first neural network in the second neural network, and generate a recognition result based on the first neural network from an intermediate feature map computed by applying an element-wise operation to the first feature map and the second feature map.
    Type: Grant
    Filed: September 11, 2019
    Date of Patent: August 1, 2023
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Byungin Yoo, Youngsung Kim, Youngjun Kwak, Chang Kyu Choi
  • Publication number: 20230229926
    Abstract: A processor-implemented method of generating feature data includes: receiving an input image; generating, based on a pixel value of the input image, at least one low-bit image having a number of bits per pixel lower than a number of bits per pixel of the input image; and generating, using at least one neural network, feature data corresponding to the input image from the at least one low-bit image.
    Type: Application
    Filed: March 29, 2023
    Publication date: July 20, 2023
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Chang Kyu CHOI, Youngjun KWAK, Seohyung LEE
  • Patent number: 11688403
    Abstract: An authentication method and apparatus using a transformation model are disclosed. The authentication method includes generating, at a first apparatus, a first enrolled feature based on a first feature extractor, obtaining a second enrolled feature to which the first enrolled feature is transformed, determining an input feature by extracting a feature from input data with a second feature extractor different from the first feature extractor, and performing an authentication based on the second enrolled feature and the input feature.
    Type: Grant
    Filed: March 6, 2020
    Date of Patent: June 27, 2023
    Assignees: Samsung Electronics Co., Ltd., SNU R&DB FOUNDATION
    Inventors: Seungju Han, Jaejoon Han, Minsu Ko, Chang Kyu Choi, Bohyung Han
  • Patent number: 11688105
    Abstract: A processor implemented method of processing a facial expression image, the method includes controlling a camera to capture a first facial expression image and a second facial expression image, acquiring a first expression feature of the first facial expression image, acquiring a second expression feature of the second facial expression image, generating a new expression feature dependent on differences between the acquired first expression feature and the acquired second expression feature, and adjusting a target facial expression image based on the new expression feature.
    Type: Grant
    Filed: December 2, 2020
    Date of Patent: June 27, 2023
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Tianchu Guo, Youngsung Kim, Hui Zhang, Byungin Yoo, Chang Kyu Choi, Jae-Joon Han, Jingtao Xu, Deheng Qian
  • Patent number: 11663728
    Abstract: A depth estimation method and apparatus are provided. The depth estimation method includes obtaining an image from an image sensor comprising upper pixels, each comprising N sub-pixels, obtaining N sub-images respectively corresponding to the N sub-pixels from the image, obtaining a viewpoint difference between the N sub-images using a first neural network, and obtaining a depth map of the image based on the viewpoint difference using a second neural network.
    Type: Grant
    Filed: January 12, 2021
    Date of Patent: May 30, 2023
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jiaqian Yu, Jingtao Xu, Yiwei Chen, Byung In Yoo, Chang Kyu Choi, Hana Lee, Jaejoon Han, Qiang Wang
  • Patent number: 11636575
    Abstract: A processor-implemented method of generating feature data includes: receiving an input image; generating, based on a pixel value of the input image, at least one low-bit image having a number of bits per pixel lower than a number of bits per pixel of the input image; and generating, using at least one neural network, feature data corresponding to the input image from the at least one low-bit image.
    Type: Grant
    Filed: October 22, 2021
    Date of Patent: April 25, 2023
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Chang Kyu Choi, Youngjun Kwak, Seohyung Lee
  • Publication number: 20230119080
    Abstract: A face verification method and apparatus is disclosed. The face verification method includes selecting a current verification mode, from among plural verification modes, to be implemented for the verifying of the face, determining one or more recognizers, from among plural recognizers, based on the selected current verification mode, extracting feature information from information of the face using at least one of the determined one or more recognizers, and indicating whether a verification is successful based on the extracted feature information.
    Type: Application
    Filed: December 16, 2022
    Publication date: April 20, 2023
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Changyong SON, Deoksang KIM, Minsu KO, Jinwoo SON, Seungju HAN, Chang Kyu CHOI, Jae-Joon HAN
  • Patent number: 11625473
    Abstract: A method and apparatus with selective combined authentication performs a single authentication based on a first modality among plural modalities, and in response to the single authentication having failed, determines whether to perform a combined authentication by a combination of two or more of the plural modalities, and selectively, depending on a result of the determining of whether to perform the combined authentication, performs the combined authentication.
    Type: Grant
    Filed: February 7, 2019
    Date of Patent: April 11, 2023
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jihye Kim, Seungju Han, Jaejoon Han, Minsu Ko, SungUn Park, Chang Kyu Choi
  • Patent number: 11625601
    Abstract: A lightened neural network, method, and apparatus, and recognition method and apparatus implementing the same. A neural network includes a plurality of layers each comprising neurons and plural synapses connecting neurons included in neighboring layers. Synaptic weights with values greater than zero and less than a preset value of a variable a, which is greater than zero, may be at least partially set to zero. Synaptic weights with values greater than a preset value of a variable b, which is greater than zero, may be at least partially set to the preset value of the variable b.
    Type: Grant
    Filed: September 9, 2019
    Date of Patent: April 11, 2023
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Changyong Son, Jinwoo Son, Byungin Yoo, Chang Kyu Choi, Jae-Joon Han
  • Patent number: 11586886
    Abstract: A processor-implemented neural network processing method includes: obtaining a kernel bit-serial block corresponding to first data of a weight kernel of a layer in a neural network; generating a feature map bit-serial block based on second data of one or more input feature maps of the layer; and generating at least a portion of an output feature map by performing a convolution operation of the layer using a bitwise operation between the kernel bit-serial block and the feature map bit-serial block.
    Type: Grant
    Filed: August 16, 2019
    Date of Patent: February 21, 2023
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jinwoo Son, Changyong Son, Seohyung Lee, Sangil Jung, Chang Kyu Choi, Jaejoon Han
  • Publication number: 20230051648
    Abstract: Disclosed is a convolutional neural network (CNN) processing apparatus and method, the apparatus configured to determine a loading space unit for at least one loading space in an input based on a height or a width for an input feature map of the input and an extent of a dimension of a kernel feature map, load target input elements corresponding to a target loading space, among the at least one loading space, from a memory and store the target input elements in an allocated input buffer having a size corresponding to the loading space unit, and perform a convolution operation between the target input elements stored in the input buffer and at least one kernel element of a kernel.
    Type: Application
    Filed: October 28, 2022
    Publication date: February 16, 2023
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Jinwoo SON, Changyong SON, Jaejoon HAN, Chang Kyu CHOI
  • Publication number: 20230015107
    Abstract: Disclosed is an image fusion method and apparatus. The fusion method includes detecting first feature points of an object in a first image frame from the first image frame; transforming the first image frame based on the detected first feature points and predefined reference points to generate a transformed first image frame; detecting second feature points of the object in a second image frame from the second image frame; transforming the second image frame based on the detected second feature points and the predefined reference points to generate a transformed second image frame; and generating a combined image by combining the transformed first image frame and the transformed second image frame.
    Type: Application
    Filed: September 19, 2022
    Publication date: January 19, 2023
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Minsu KO, Seungju HAN, Jaejoon HAN, Jihye KIM, SungUn PARK, Chang Kyu CHOI
  • Publication number: 20230021306
    Abstract: A lightened neural network method and apparatus. The neural network apparatus includes a processor configured to generate a neural network with a plurality of layers including plural nodes by applying lightened weighted connections between neighboring nodes in neighboring layers of the neural network to interpret input data applied to the neural network, wherein lightened weighted connections of at least one of the plurality of layers includes weighted connections that have values equal to zero for respective non-zero values whose absolute values are less than an absolute value of a non-zero value. The lightened weighted connections also include weighted connections that have values whose absolute values are no greater than an absolute value of another non-zero value, the lightened weighted connections being lightened weighted connections of trained final weighted connections of a trained neural network whose absolute maximum values are greater than the absolute value of the other non-zero value.
    Type: Application
    Filed: January 12, 2022
    Publication date: January 19, 2023
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Changyong SON, Jinwoo SON, Byungin YOO, Chang Kyu CHOI, Jae-Joon HAN
  • Patent number: 11551476
    Abstract: A facial verification method includes separating a query face image into color channel images of different color channels, obtaining a multi-color channel target face image with a reduced shading of the query face image based on a smoothed image and a gradient image of each of the color channel images, extracting a face feature from the multi-color channel target face image, and determining whether face verification is successful based on the extracted face feature.
    Type: Grant
    Filed: December 24, 2020
    Date of Patent: January 10, 2023
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Minsu Ko, SeungJu Han, JaeJoon Han, Chang Kyu Choi
  • Patent number: 11532177
    Abstract: A face verification method and apparatus is disclosed. The face verification method includes selecting a current verification mode, from among plural verification modes, to be implemented for the verifying of the face, determining one or more recognizers, from among plural recognizers, based on the selected current verification mode, extracting feature information from information of the face using at least one of the determined one or more recognizers, and indicating whether a verification is successful based on the extracted feature information.
    Type: Grant
    Filed: January 8, 2018
    Date of Patent: December 20, 2022
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Changyong Son, Deoksang Kim, Minsu Ko, Jinwoo Son, Seungju Han, Chang Kyu Choi, Jae-Joon Han
  • Patent number: 11514290
    Abstract: Disclosed is a convolutional neural network (CNN) processing apparatus and method, the apparatus configured to determine a loading space unit for at least one loading space in an input based on a height or a width for an input feature map of the input and an extent of a dimension of a kernel feature map, load target input elements corresponding to a target loading space, among the at least one loading space, from a memory and store the target input elements in an allocated input buffer having a size corresponding to the loading space unit, and perform a convolution operation between the target input elements stored in the input buffer and at least one kernel element of a kernel.
    Type: Grant
    Filed: December 11, 2017
    Date of Patent: November 29, 2022
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jinwoo Son, Changyong Son, Jaejoon Han, Chang Kyu Choi
  • Patent number: 11514602
    Abstract: A gaze estimation method includes receiving, by a processor, input data including a current image and a previous image each including a face of a user, determining, by the processor, a gaze mode indicating a relative movement between the user and a camera that captured the current image and the previous image based on the input data, and estimating, by the processor, a gaze of the user based on the determined gaze mode, wherein the determined gaze mode is one of a plurality of gaze modes comprising a stationary mode and a motion mode.
    Type: Grant
    Filed: December 20, 2019
    Date of Patent: November 29, 2022
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Tianchu Guo, Hui Zhang, Xiabing Liu, Chang Kyu Choi, Jaejoon Han, Yongchao Liu