Patents by Inventor Chang Ko

Chang Ko 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: 9622195
    Abstract: Disclosed are an apparatus and method for controlling transmission power of a terminal in a wireless environment. The apparatus for controlling transmission power of a terminal includes an optimal transmission power calculation unit configured to calculate an optimal transmission power value for a terminal of a type, the terminal being accessible to one or more wireless networks; a transmission power setting unit configured to, when an access of the terminal to at least one of the one or more wireless networks is sensed, provide the terminal with optimal transmission power values corresponding to the terminal and the network accessed by the terminal.
    Type: Grant
    Filed: November 26, 2014
    Date of Patent: April 11, 2017
    Assignee: SAMSUNG SDS CO., LTD.
    Inventors: You-Chang Ko, Yang-Hwan Joe, Ha-Young Kim, Dong-Eun Oh
  • Publication number: 20170062406
    Abstract: An electrostatic discharge (ESD) protection device includes an N-type laterally diffused metal oxide semiconductor (LDMOS) transistor including a source electrode, a gate electrode, and a well bias electrode that are connected to a first pad receiving a first voltage, and a drain electrode connected to a middle node. The ESD protection device further includes a silicon controlled rectifier (SCR) connected between the middle node and a second pad receiving a second voltage higher than the first voltage.
    Type: Application
    Filed: August 11, 2016
    Publication date: March 2, 2017
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jae-Hyok KO, Min-Chang KO, Han-Gu KIM, Jong-Kyu SONG, Jin HEO
  • Publication number: 20160334790
    Abstract: An autonomous vehicle retrofit system includes: a central computer; and a braking interface to decelerate a wheel of a vehicle via actuation of a brake caliper, the braking interface further including a brake pedal; a first master cylinder assembly, mechanically coupled to the brake pedal such that actuation of the brake pedal causes actuation of the first master cylinder assembly; a second master cylinder assembly, coupled to the central computer such that the central computer controls actuation of the second master cylinder assembly; and an actuator selector, hydraulically coupled to the brake caliper, that selectively actuates the brake caliper in response to actuation of at least one of the first master cylinder assembly and the second master cylinder assembly.
    Type: Application
    Filed: May 10, 2016
    Publication date: November 17, 2016
    Inventors: Ian Rust, Rita Caravino, Matthew Graney, Yung-Chang Ko, Kyle Vogt, Kevin Chu
  • Publication number: 20160297397
    Abstract: A control method for vehicle anti-theft is provided. The control method includes as follows. Obtain a communication identification code of a smart key. Control a first wireless transmitting unit of the smart key to transmit a wireless signal containing the communication identification code. Obtain a predefined communication identification code; comparing the communication identification code with the predefined communication identification code. Obtain a control order randomly from the second storage unit when the communication identification code matches with the predefined communication identification code. Transmit a wireless signal containing the control order; setting communication parameters of the smart key according to the control order. Transmit a wireless signal containing the set communication parameters; determining whether the communication parameters match with the predefined communication parameters.
    Type: Application
    Filed: August 6, 2015
    Publication date: October 13, 2016
    Inventor: HUNG-CHANG KO
  • Publication number: 20160300412
    Abstract: A communication system for a vehicle includes a vehicle and a portable communication device. The vehicle includes a low frequency antenna and an ultra high frequency (UHF) antenna. The portable communication device includes a low frequency antenna and a UHF antenna. Signals are transmitted from the vehicle to the portable communication device via the low frequency antenna. Signals are transmitted from the portable communication device to the vehicle via the UHF antenna. Periodic detecting signals, and challenge signals on detection, are broadcast by the vehicle, and received by the low frequency antenna of the portable communication device. Doors of the vehicle are unlocked and the engine of the vehicle may be started when the return signals from the UHF antenna of the portable communication device are authenticated by the vehicle.
    Type: Application
    Filed: September 8, 2015
    Publication date: October 13, 2016
    Inventor: HUNG-CHANG KO
  • Publication number: 20160189457
    Abstract: A control method for anti-theft is provided. The method is applied to a vehicle and a smart key.
    Type: Application
    Filed: May 15, 2015
    Publication date: June 30, 2016
    Inventor: HUNG-CHANG KO
  • Patent number: 9351147
    Abstract: Provided are an apparatus for setting a roaming parameter and a method for the apparatus to set a roaming parameter. The apparatus includes a receiver configured to receive terminal information from a terminal connected to a wireless local area network (LAN), a manager configured to store and manage roaming parameters according to terminal models connectable to the wireless LAN (terminal-model-specific roaming parameters), a calculator configured to calculate a roaming parameter of the terminal using the received terminal information and the terminal-model-specific roaming parameters, and a transmitter configured to transmit the calculated roaming parameter to the terminal.
    Type: Grant
    Filed: May 28, 2015
    Date of Patent: May 24, 2016
    Assignee: SAMSUNG SDS CO., LTD.
    Inventors: Kwang-Seop Choi, You-Chang Ko, Yang-Hwan Joe, Young-Soo Yuk
  • Publication number: 20150350873
    Abstract: Provided are an apparatus for setting a roaming parameter and a method for the apparatus to set a roaming parameter. The apparatus includes a receiver configured to receive terminal information from a terminal connected to a wireless local area network (LAN), a manager configured to store and manage roaming parameters according to terminal models connectable to the wireless LAN(terminal-model-specific roaming parameters), a calculator configured to calculate a roaming parameter of the terminal using the received terminal information and the terminal-model-specific roaming parameters, and a transmitter configured to transmit the calculated roaming parameter to the terminal.
    Type: Application
    Filed: May 28, 2015
    Publication date: December 3, 2015
    Applicant: SAMSUNG SDS CO., LTD.
    Inventors: Kwang-Seop CHOI, You-Chang KO, Yang-Hwan JOE, Young-Soo YUK
  • Patent number: 9113224
    Abstract: An optical low-noise block down-converter for a satellite television system is disclosed. The optical low-noise block down-converter includes a first down-conversion module coupled to a satellite antenna of the satellite television system for converting a vertically polarized signal received by the satellite antenna into a first intermediate frequency signal, a second down-conversion module coupled to the satellite antenna for converting a horizontally polarized signal received by the satellite antenna into a second intermediate frequency signal, and a third down-conversion module having a first input terminal coupled between the satellite antenna and a first down-converter of the first down-conversion module and a second input terminal coupled between the satellite antenna and a second down-converter of the second down-conversion module for draining out part of the vertically polarized signal and the horizontally polarized signal to combine and convert into a legacy electrical signal.
    Type: Grant
    Filed: December 26, 2012
    Date of Patent: August 18, 2015
    Assignee: Wistron NeWeb Corporation
    Inventors: Che-Ming Wang, Chih-Chang Ko
  • Patent number: 9107070
    Abstract: Provided are a system and method for setting an adaptive set of handoff parameters. The system includes a user terminal configured to transmit an authentication request to a network and receive a set of handoff parameters from the network; an access point (AP) belonging to the network and configured to receive the authentication request from the user terminal, transmit the authentication request to a central management server, receive the set of handoff parameters from the central management server, and transmit the set of handoff parameters to the user terminal; and the central management server, which is configured to store and manage a plurality of network-specific sets of handoff parameters for one or more networks, authenticate the user terminal using the authentication request received from the AP, and transmit a set of handoff parameters of a network to which the authenticated user terminal connects to the AP.
    Type: Grant
    Filed: November 23, 2011
    Date of Patent: August 11, 2015
    Assignee: SAMSUNG SDS CO., LTD.
    Inventors: Yang Hwan Joe, You Chang Ko
  • Patent number: 9093287
    Abstract: A method of manufacturing a diode is provided. An N-type well region is formed in a first upper portion of an N-type epitaxial layer. A P-type drift region is formed in a second upper portion of the N-type epitaxial layer. An N-type doping region is formed in the N-type well region. A P-type doping region is formed in the P-type drift region. An isolation structure is formed in the P-type drift region. The isolation structure is disposed between the P-type doping region and the N-type well region. A first electrode is formed on a portion of the N-type epitaxial layer. The portion of the N-type epitaxial layer is disposed between the N-type well region and the P-type drift region. The first electrode overlaps a portion of the isolation structure. A connection structure is formed to electrically couple the N-type doping region and the first electrode.
    Type: Grant
    Filed: November 18, 2013
    Date of Patent: July 28, 2015
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jae-Hyok Ko, Han-Gu Kim, Min-Chang Ko, Chang-Su Kim, Kyoung-Ki Jeon
  • Publication number: 20150156731
    Abstract: Disclosed are an apparatus and method for controlling transmission power of a terminal in a wireless environment. The apparatus for controlling transmission power of a terminal includes an optimal transmission power calculation unit configured to calculate an optimal transmission power value for a terminal of a type, the terminal being accessible to one or more wireless networks; a transmission power setting unit configured to, when an access of the terminal to at least one of the one or more wireless networks is sensed, provide the terminal with optimal transmission power values corresponding to the terminal and the network accessed by the terminal.
    Type: Application
    Filed: November 26, 2014
    Publication date: June 4, 2015
    Applicant: SAMSUNG SDS CO., LTD.
    Inventors: You-Chang KO, Yang-Hwan JOE, Ha-Young KIM, Dong-Eun OH
  • Publication number: 20150139032
    Abstract: An apparatus for accessing a wireless network includes an access manager configured to request access to a wireless network according to a wireless network access condition including at least one desired service set identifier (SSID); and a wireless network access module configured to search for at least one wireless network corresponding to the at least one desired SSID, and access the searched at least one wireless network.
    Type: Application
    Filed: December 30, 2014
    Publication date: May 21, 2015
    Applicant: SAMSUNG SDS CO., LTD.
    Inventors: You Chang KO, Yang Hwan JOE
  • Publication number: 20140308364
    Abstract: A novel nanocomposite including hydroxyapatite-gelatin bioceramic material and dopamine, wherein the dopamine undergoes an oxidative self-polymerization reaction to form the novel nanocomposite. The nanocomposite displays superior mechanical strength, elasticity, biocompatibility and forming capabilities and is targeted for bone repairs and template-assisted tissue engineering applications. In addition, improved aminosilica-based hydroxyapatite-gelatin bioceramic bioceramics are disclosed.
    Type: Application
    Filed: November 15, 2012
    Publication date: October 16, 2014
    Applicant: THE UNIVERSITY OF NORTH CAROLINA AT CHAPEL HILL
    Inventor: Ching-Chang Ko
  • Publication number: 20140210003
    Abstract: A method of manufacturing a diode is provided. An N-type well region is formed in a first upper portion of an N-type epitaxial layer. A P-type drift region is formed in a second upper portion of the N-type epitaxial layer. An N-type doping region is formed in the N-type well region. A P-type doping region is formed in the P-type drift region. An isolation structure is formed in the P-type drift region. The isolation structure is disposed between the P-type doping region and the N-type well region. A first electrode is formed on a portion of the N-type epitaxial layer. The portion of the N-type epitaxial layer is disposed between the N-type well region and the P-type drift region. The first electrode overlaps a portion of the isolation structure. A connection structure is formed to electrically couple the N-type doping region and the first electrode.
    Type: Application
    Filed: November 18, 2013
    Publication date: July 31, 2014
    Inventors: Jae-Hyok KO, Han-Gu KIM, Min-Chang KO, Chang-Su KIM, Kyoung-Ki JEON
  • Publication number: 20140089991
    Abstract: An optical low-noise block down-converter for a satellite television system is disclosed. The optical low-noise block down-converter includes a first down-conversion module coupled to a satellite antenna of the satellite television system for converting a vertically polarized signal received by the satellite antenna into a first intermediate frequency signal, a second down-conversion module coupled to the satellite antenna for converting a horizontally polarized signal received by the satellite antenna into a second intermediate frequency signal, and a third down-conversion module having a first input terminal coupled between the satellite antenna and a first down-converter of the first down-conversion module and a second input terminal coupled between the satellite antenna and a second down-converter of the second down-conversion module for draining out part of the vertically polarized signal and the horizontally polarized signal to combine and convert into a legacy electrical signal.
    Type: Application
    Filed: December 26, 2012
    Publication date: March 27, 2014
    Applicant: WISTRON NEWEB CORPORATION
    Inventors: Che-Ming Wang, Chih-Chang Ko
  • Publication number: 20130337760
    Abstract: A radio-frequency (RF) receiver device for a wireless communication system includes a first filter for filtering out a first RF signal within a first frequency band, a first frequency converter for using a first oscillating signal to convert the first RF signal of the first frequency band to generate a second RF signal, a second filter for filtering out a second RF signal within a second frequency band, a second frequency converter for using a second oscillating signal to convert the second RF signal of the second frequency band to generate a third RF signal, a third filter for filtering out a third RF signal within a third frequency band, and a controller for controlling the first frequency converter and the second frequency converter.
    Type: Application
    Filed: September 5, 2012
    Publication date: December 19, 2013
    Inventors: Chih-Chang Ko, Che-Ming Wang
  • Publication number: 20130252587
    Abstract: Provided are a wireless terminal and a method of managing a network connection using the same. The wireless terminal includes a login processor configured to carry out a login procedure including an authentication procedure and a user account verification procedure, a received signal strength indication (RSSI) detector configured to detect an RSSI and check a receiving state, a wireless connection profile manager configured to generate, maintain, or delete a wireless connection profile, and a controller configured to monitor a login process state and a network connection state from the login processor and the RSSI detector and control the login processor or the wireless connection profile manager according to the monitoring result.
    Type: Application
    Filed: December 2, 2011
    Publication date: September 26, 2013
    Applicant: SAMSUNG SDS CO., LTD.
    Inventors: You Chang Ko, Yang Hwan Joe
  • Patent number: 8526330
    Abstract: Disclosed herein are an automatically-switchable network extension apparatus and a switching method thereof. An automatic connection mechanism is particularly introduced into the apparatus. Exemplarily, a random number scheme is used to generate a value to be a basis for configuring the apparatus functioned as a CO or CPE operational mode. Based on the value, the method is to perform a connection with the other network extension apparatus. According to the embodiment, a set of connection parameters and the randomly-generated value are generated after the apparatus is initialized. The apparatus may be configured as CO or CPE operational mode according to the value, and simultaneously detect the operational mode of the apparatus to be linked. The apparatus accomplishes the connection if the two apparatuses have different modes, or the value is generated again to perform the connection.
    Type: Grant
    Filed: November 12, 2010
    Date of Patent: September 3, 2013
    Assignee: Etherwan Systems, Inc.
    Inventor: Jen-Chang Ko
  • Patent number: 8509623
    Abstract: An optical LNB capable of fast position-adjusting is employed in an LNBF. The optical LNB includes a down-converting device coupled to an OMT of the LNBF for down-converting a polarized signal for generating a first intermediate frequency signal, a branching device for branching the first intermediate frequency signal for generating a second and a third intermediate frequency signals, an electrical/optical converting device coupled to the branching device for converting the second intermediate frequency signal into an optical signal, and a power end for receiving power from a power supply and outputting the third intermediate frequency signal.
    Type: Grant
    Filed: December 15, 2010
    Date of Patent: August 13, 2013
    Assignee: Wistron NeWeb Corporation
    Inventors: Che-Ming Wang, Chih-Chang Ko