Patents by Inventor Chang-Hun Jeon

Chang-Hun Jeon 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: 20240135858
    Abstract: A display device includes pixels connected to scan lines and data lines, each pixel including a driving transistor and at least one light emitting element, and a timing controller configured to generate output data using external input data. The timing controller includes a first compensator configured generate first data by correcting the external input data using at least one of optical measurement information, a threshold voltage of each of the driving transistors, mobility information, dimming information, and temperature information, and an afterimage compensator configured to generate second data based on age information of each light emitting element and the first data, generate third data based on a current amount corresponding to the first data and a current amount corresponding to the second data, and generate the age information by accumulating the third data.
    Type: Application
    Filed: May 17, 2023
    Publication date: April 25, 2024
    Inventors: Joon Hyeok JEON, Byoung Kwan AN, Sang Myeon HAN, Chang Hun KIM, Seung Ho PARK, Seok Gyu BAN, Nam Jae LIM
  • Publication number: 20240118196
    Abstract: In the case of a gas in which several gases are mixed, a type and concentration of the gas may be incorrectly measured when measured using only an optical band-pass filter. The invention of the present application is directed to providing a technology in which a plurality of broadband band-pass filters having overlapping regions are provided to calculate a magnitude of absorption for each wavelength band for light passing through each broadband band-pass filter, thereby identifying the presence of a gas of interest and the presence of a gas other than the gas of interest.
    Type: Application
    Filed: September 8, 2023
    Publication date: April 11, 2024
    Inventors: Cheol Woo NAM, Byung Yul MOON, Eung Yul KIM, Jae Hwan KIM, Chun Ho SHIN, Kwang Hun PARK, Myun Gu CHOI, Chang Hwang CHOI, Yong Geol KIM, Jae Min JEON
  • Publication number: 20240098382
    Abstract: An image processing device including: a decision pixel manager for setting a decision area for a defect candidate pixel, and determining a first decision pixel and a second decision pixel, based on first phase information of pixels included in the decision area with respect to a first modulation frequency of a sensing light source among the pixels; a target pixel determiner for calculating a phase difference between the first decision pixel and the second decision pixel, based on second phase information of the pixels with respect to a second modulation frequency of the sensing light source, and determining the defect candidate pixel as a target pixel, corresponding to that the phase difference exceeds a predetermined reference value; and a phase corrector for changing a phase of the target pixel, based on the phase difference.
    Type: Application
    Filed: February 28, 2023
    Publication date: March 21, 2024
    Applicant: SK hynix Inc.
    Inventors: Woo Young JEONG, Ja Min KOO, Tae Hyun KIM, Jae Hwan JEON, Chang Hun CHO
  • Patent number: 6905500
    Abstract: Disclosed is a bone fixation apparatus. This device comprises a bone screw having a head; a cap member placed on an upper part of the head of the bone screw; a receiver member having a bore in which the cap member and the head of the bone screw are respectively accommodated and held, and a U-shaped channel through which a support bar extends; and a compression member threadedly coupled into the receiver member to downwardly bias the support bar. A multitude of stepped portions are formed at a lower end and inner surface of the receiver member to be brought into linear contact with an outer surface of a lower part of the head so that the supporting force for the head of the bone screw is increased.
    Type: Grant
    Filed: February 4, 2002
    Date of Patent: June 14, 2005
    Assignee: U & I Corporation
    Inventors: Chang-Hun Jeon, Howard S. An, Ja-Kyo Koo
  • Publication number: 20040102781
    Abstract: Disclosed is a bone fixation apparatus. This apparatus comprises a bone screw having a head; a cap member placed on the head of the bone screw; a receiver member having a bore in which the cap member and the head of the bone screw are respectively accommodated and held, and a U-shaped channel through which a support bar extends; and a compression member threadedly coupled into the receiver member to downwardly bias the support bar; wherein a multitude of stepped portions are formed at the lower end and on the inner surface of the receiver member, an accommodating chamber is defined above the stepped portions to accommodate therein the cap member, internal threads are formed on the inner surface of the receiver member to allow the compression member to be threadedly coupled therewith, and an outward flange is formed around the upper end of the cap member, thereby preventing movement of a bone, improving the assemblability of the bone fixation apparatus and keeping a cap member from being released.
    Type: Application
    Filed: November 29, 2002
    Publication date: May 27, 2004
    Applicant: U & I Corporation
    Inventor: Chang-Hun Jeon
  • Publication number: 20030158552
    Abstract: Disclosed is a bone fixation apparatus. This device comprises a bone screw having a head; a cap member placed on an upper part of the head of the bone screw; a receiver member having a bore in which the cap member and the head of the bone screw are respectively accommodated and held, and a U-shaped channel through which a support bar extends; and a compression member threadedly coupled into the receiver member to downwardly bias the support bar. A multitude of stepped portions are formed at a lower end and inner surface of the receiver member to be brought into linear contact with an outer surface of a lower part of the head so that the supporting force for the head of the bone screw is increased.
    Type: Application
    Filed: November 21, 2002
    Publication date: August 21, 2003
    Inventors: Chang-Hun Jeon, Howard S. An, Ja-Kyo Koo