Patents by Inventor Ji Hyung RYU

Ji Hyung RYU 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: 20240086543
    Abstract: A secure booting apparatus according to an embodiment for solving the problems to be solved by the present invention includes: a memory configured to store encrypted data, an encrypted header, and a symmetric key; and a processor configured to generate decrypted data and a decrypted header by applying a symmetric key algorithm using the symmetric key to the encrypted data and encrypted header, to include a public key and a pre key generated from the public key in the decrypted header, to generate a comparison hashed message by applying a hash algorithm to the decrypted data, to generate a final verification value by applying a public key algorithm using the public key and the pre key to the decrypted header, to compare the comparison hashed message with the final verification value, and to determine that booting has failed if the comparison hashed message and the final verification value are different from each other.
    Type: Application
    Filed: August 31, 2020
    Publication date: March 14, 2024
    Inventors: Bo Ram HWANG, Ji Hyung RYU, Yong Tae YANG, Yoon Chul SHIN
  • Patent number: 11184614
    Abstract: An image processing apparatus includes an image processor and an encoder. The image processor enhances an edge of an input image, removes noise from the input image, synthesizes the edge-enhanced image and the noise-removed image, and removes a high frequency from the synthesized image. The encoder pre-encodes a downsized synthesized image, obtains a pre-bit rate of the pre-encoded image, sets a quantization parameter value based on a reference bit rate and the pre-bit rate, and compresses the high-frequency removed image based on the quantization parameter value.
    Type: Grant
    Filed: February 20, 2020
    Date of Patent: November 23, 2021
    Assignee: HANWHA TECHWIN CO., LTD.
    Inventors: Ji Hyung Ryu, Il Sik Yang
  • Publication number: 20200195927
    Abstract: An image processing apparatus includes an image processor and an encoder. The image processor enhances an edge of an input image, removes noise from the input image, synthesizes the edge-enhanced image and the noise-removed image, and removes a high frequency from the synthesized image. The encoder pre-encodes a downsized synthesized image, obtains a pre-bit rate of the pre-encoded image, sets a quantization parameter value based on a reference bit rate and the pre-bit rate, and compresses the high-frequency removed image based on the quantization parameter value.
    Type: Application
    Filed: February 20, 2020
    Publication date: June 18, 2020
    Applicant: HANWHA TECHWIN CO., LTD.
    Inventors: Ji Hyung RYU, Il Sik YANG
  • Patent number: 10574991
    Abstract: An image processing apparatus includes an image processor and an encoder. The image processor enhances an edge of an input image, removes noise from the input image, synthesizes the edge-enhanced image and the noise-removed image, and removes a high frequency from the synthesized image. The encoder pre-encodes a downsized synthesized image, obtains a pre-bit rate of the pre-encoded image, sets a quantization parameter value based on a reference bit rate and the pre-bit rate, and compresses the high-frequency removed image based on the quantization parameter value.
    Type: Grant
    Filed: June 5, 2019
    Date of Patent: February 25, 2020
    Assignee: HANWHA TECHWIN CO., LTD.
    Inventors: Ji Hyung Ryu, II Sik Yang
  • Publication number: 20190289292
    Abstract: An image processing apparatus includes an image processor and an encoder. The image processor enhances an edge of an input image, removes noise from the input image, synthesizes the edge-enhanced image and the noise-removed image, and removes a high frequency from the synthesized image. The encoder pre-encodes a downsized synthesized image, obtains a pre-bit rate of the pre-encoded image, sets a quantization parameter value based on a reference bit rate and the pre-bit rate, and compresses the high-frequency removed image based on the quantization parameter value.
    Type: Application
    Filed: June 5, 2019
    Publication date: September 19, 2019
    Applicant: HANWHA TECHWIN CO., LTD.
    Inventors: Ji Hyung RYU, II Sik Yang
  • Patent number: 10362308
    Abstract: An image processing apparatus includes an image processor and an encoder. The image processor enhances an edge of an input image, removes noise from the input image, synthesizes the edge-enhanced image and the noise-removed image, and removes a high frequency from the synthesized image. The encoder pre-encodes a downsized synthesized image, obtains a pre-bit rate of the pre-encoded image, sets a quantization parameter value based on a reference bit rate and the pre-bit rate, and compresses the high-frequency removed image based on the quantization parameter value.
    Type: Grant
    Filed: February 2, 2017
    Date of Patent: July 23, 2019
    Assignee: HANWHA TECHWIN CO., LTD.
    Inventors: Ji Hyung Ryu, Il Sik Yang
  • Publication number: 20180091813
    Abstract: An image processing apparatus includes an image processor and an encoder. The image processor enhances an edge of an input image, removes noise from the input image, synthesizes the edge-enhanced image and the noise-removed image, and removes a high frequency from the synthesized image. The encoder pre-encodes a downsized synthesized image, obtains a pre-bit rate of the pre-encoded image, sets a quantization parameter value based on a reference bit rate and the pre-bit rate, and compresses the high-frequency removed image based on the quantization parameter value.
    Type: Application
    Filed: February 2, 2017
    Publication date: March 29, 2018
    Applicant: Hanwha Techwin Co., Ltd.
    Inventors: Ji Hyung RYU, Il Sik YANG