Patents by Inventor Chang-Heon Oh

Chang-Heon Oh 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: 11956712
    Abstract: Electronic device includes first wireless communication interface; second wireless communication interface; and controller.
    Type: Grant
    Filed: January 10, 2022
    Date of Patent: April 9, 2024
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Yong-woo Lee, Chang-heon Yoon, Jong-min Kim, Sang-hun Park, Sung-min So, Wha-seob Sim, Se-young Oh
  • Publication number: 20240112762
    Abstract: The present disclosure relates to an apparatus for obtaining a raw material which extracts a color raw material for cosmetics having a target color, wherein when a target color development value is input, raw material information is extracted using a genetic algorithm.
    Type: Application
    Filed: December 17, 2021
    Publication date: April 4, 2024
    Applicant: LG HOUSEHOLD & HEALTH CARE LTD.
    Inventors: Se Heon OH, Hye Jin JEONG, Chang Young PARK
  • Patent number: 10581148
    Abstract: An antenna is disclosed wherein a plurality of antennas are combined in a single housing, whereby antenna radiation performance can be improved by increasing frequency bandwidth while minimizing signal interference between antennas. The antenna has a case, a housing, a circuit board, and a base. The case has an open bottom. The housing, formed in a shape corresponding to the interior surface of the case and inserted into the interior of the case, has a plurality of radiating bodies that send and receive signals in a plurality of frequency bands, and a coupling patch that increases frequency bandwidth and minimizes signal interference between radiating bodies. The board is mounted in the case and whereon a feeding pad is furnished that is electrically connected to the radiating bodies. The base is mounted on the board so as to couple to the case and block to open bottom of the case.
    Type: Grant
    Filed: August 18, 2016
    Date of Patent: March 3, 2020
    Assignee: Molex, LLC
    Inventors: Dae Hyeon Jeong, Chang Heon Oh, Hu Bong Jeong, Ju Bong Yoo
  • Publication number: 20180241118
    Abstract: An antenna is disclosed wherein a plurality of antennas are combined in a single housing, whereby antenna radiation performance can be improved by increasing frequency bandwidth while minimizing signal interference between antennas. The antenna has a case, a housing, a circuit board, and a base. The case has an open bottom. The housing, formed in a shape corresponding to the interior surface of the case and inserted into the interior of the case, has a plurality of radiating bodies that send and receive signals in a plurality of frequency bands, and a coupling patch that increases frequency bandwidth and minimizes signal interference between radiating bodies. The board is mounted in the case and whereon a feeding pad is furnished that is electrically connected to the radiating bodies. The base is mounted on the board so as to couple to the case and block to open bottom of the case.
    Type: Application
    Filed: August 18, 2016
    Publication date: August 23, 2018
    Applicant: Molex, LLC
    Inventors: Dae Hyeon JEONG, Chang Heon OH, Hu Bong JEONG, Ju Bong YOO
  • Patent number: 6993329
    Abstract: An apparatus and method for automatically switching communication/communication suppression mode of a wireless communication terminal is disclosed.
    Type: Grant
    Filed: May 31, 2001
    Date of Patent: January 31, 2006
    Assignees: Hyundai Curitel, Inc.
    Inventors: Sung-Joon Cho, Chang-Heon Oh, Jea-Sung Rho
  • Publication number: 20030139138
    Abstract: An apparatus and method for automatically switching communication/communication suppression mode of a wireless communication terminal is disclosed.
    Type: Application
    Filed: November 27, 2002
    Publication date: July 24, 2003
    Inventors: Sung-Joon Cho, Chang-Heon Oh, Jea-Sung Rho
  • Patent number: 6078790
    Abstract: A radio frequency generator in a radio communication system having a transmitter for up-converting the frequency of transmission data signals, and a receiver for down-converting the frequency of reception data signals includes: a first radio frequency generator for generating a low-band reception local oscillator frequency signal which is provided to a second mixer in the receiver; a second radio frequency generator for generating a low-band transmission local oscillator frequency signal which is provided to a first mixer in the transmitter; and a third radio frequency generator for generating a high-band local oscillator frequency signal for a first mixer of the receiver and a second mixer of the transmitter. A reference frequency generator is provided for receiving a radio frequency signal from a global position system receiver and generating a reference signal for generating local oscillator frequency signals in response thereto.
    Type: Grant
    Filed: April 25, 1997
    Date of Patent: June 20, 2000
    Assignee: SamSung Electronics Co., Ltd.
    Inventors: Chang-Heon Oh, Sung-Gyu Kim
  • Patent number: 6037868
    Abstract: An alarm method and apparatus in a mobile communication repeating system having a plurality of repeating modules for informing a base station that a repeating module is out of order. The repeating modules respectively check whether a self repeating module is out of order. A repeating interface unit informs the base station of an alarm state according to a failure of a particular repeating module.
    Type: Grant
    Filed: March 30, 1998
    Date of Patent: March 14, 2000
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Chang-Heon Oh, Kwang-Il Ko
  • Patent number: 6035218
    Abstract: A radio signal repeating apparatus of a code division multiple access communication system. A plurality of antennas is constructed by utilizing both time diversity and space diversity, and a code division multiple access signal processed by a base station is transmitted to a corresponding mobile station through the use of such time diversity and the space diversity.
    Type: Grant
    Filed: May 8, 1997
    Date of Patent: March 7, 2000
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Chang-Heon Oh, Sung-Gyu Kim