Patents by Inventor Seung-Woo Hong

Seung-Woo Hong 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: 20170149936
    Abstract: There are provided a method, a system, and a computer-readable recording medium for processing network traffic. A method for processing network traffic using a switching application specific integrated circuit (ASIC) includes generating, by a software forwarder operated in a software-based network operating system, a message including network processing information, transmitting the message to a switch manager operated in a hardware-based network operating system, learning, by the switch manager, the network processing information, and controlling the switching ASIC with reference to the learned information.
    Type: Application
    Filed: July 15, 2016
    Publication date: May 25, 2017
    Inventors: Seong MOON, Ho Yong RYU, Ho Sun YOON, Seung Woo HONG
  • Patent number: 9635692
    Abstract: Provided are methods of ensuring network continuity performed at a local gateway, a fixed gateway, and a network device. The method of ensuring network continuity performed at a local gateway includes establishing a tunnel with a fixed gateway serving as a relay between an Internet service server and the local gateway, and performing communication with the fixed gateway through the tunnel. Therefore, even when the type of an uplink signal received by a local gateway changes or the local gateway is in an uplink signal shadow area, a terminal connected to the local gateway can be provided with a seamless Internet service.
    Type: Grant
    Filed: January 12, 2015
    Date of Patent: April 25, 2017
    Assignee: ELECTRONICS & TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Sun Cheul Kim, Seung Woo Hong, Young Soo Shin, Ho Yong Ryu
  • Publication number: 20170109156
    Abstract: A system including software enables the running software to he upgraded without stopping any service. A system including software includes a task block loaded into a memory the task block being communicable with the outside through a message, and a dynamic module block loaded into the memory, the dynamic module block being symbolically linked with the task block to provide a service corresponding to the message.
    Type: Application
    Filed: May 25, 2016
    Publication date: April 20, 2017
    Inventors: Seung Woo HONG, Ho Sun YOON, Ho Yong RYU
  • Patent number: 9609705
    Abstract: A switching control circuit includes a switching trigger unit that receives a sensing voltage, which senses a driving current that includes a first and second driving current sections, and that provides a first switching trigger signal based on the sensing voltage in the second current section, an off-time control unit configured to provide a second switching trigger signal in the first driving current section to control a maximum off-time of a driving switching element and a switching control unit configured to turn on the driving switching element based on the first or second switching trigger signal.
    Type: Grant
    Filed: May 19, 2016
    Date of Patent: March 28, 2017
    Assignee: MagnaChip Semiconductor, Ltd.
    Inventor: Seung Woo Hong
  • Publication number: 20170027031
    Abstract: A trigger circuit includes an off-time controller configured to receive a sensing voltage by sensing a driving current and to compare the sensing voltage to first and second certain voltages that are close to a zero voltage value and symmetrical to the zero voltage value to control a turn-off time of a driving switch in order for the sensing voltage to correspond to the zero voltage value at the turn-on time point of the driving switch and a switching controller configured to provide a switching control signal for turning on the driving switch at the turn-on time point of the driving switch.
    Type: Application
    Filed: July 14, 2016
    Publication date: January 26, 2017
    Applicant: Magnachip Semiconductor, Ltd.
    Inventor: Seung Woo HONG
  • Patent number: 9543939
    Abstract: A trigger circuit includes a high voltage protector configured to scale down a first voltage according to an internal voltage to output a second voltage having a lower level than the first voltage, a switching trigger configured to detect that the outputted second voltage falls below a certain voltage level to provide a switching trigger signal, and a switching controller configured to provide a switching control signal for turning on a driving switching element based on the switching trigger signal.
    Type: Grant
    Filed: March 28, 2016
    Date of Patent: January 10, 2017
    Assignee: Magnachip Semiconductor, Ltd.
    Inventor: Seung Woo Hong
  • Publication number: 20160366736
    Abstract: A switching control circuit includes a switching trigger unit that receives a sensing voltage, which senses a driving current that includes a first and second driving current sections, and that provides a first switching trigger signal based on the sensing voltage in the second current section, an off-time control unit configured to provide a second switching trigger signal in the first driving current section to control a maximum off-time of a driving switching element and a switching control unit configured to turn on the driving switching element based on the first or second switching trigger signal.
    Type: Application
    Filed: May 19, 2016
    Publication date: December 15, 2016
    Inventor: Seung Woo HONG
  • Publication number: 20160301317
    Abstract: A Pulse-Width Modulation (PWM) controlling apparatus includes a valley detector configured to detect a valley of an auxiliary winding voltage of a flyback converter, an output voltage controller configured to output a first PWM control signal by performing averaging and sampling of the auxiliary winding voltage, an output current controller configured to output a second PWM control signal by performing an average current mode method on a current signal (CS) voltage, a latch configured to output a gate control signal after being supplied with the result of a logical OR operation of the first PWM control signal output by the output voltage controller and the second PWM control signal output by the output current controller, or an output signal of the valley detector, and a gate controller configured to perform a turning-on or turning-off operation of a first switch based on the gate control signal.
    Type: Application
    Filed: April 11, 2016
    Publication date: October 13, 2016
    Applicant: Magnachip Semiconductor, Ltd.
    Inventor: Seung Woo HONG
  • Publication number: 20160294380
    Abstract: A trigger circuit includes a high voltage protector configured to scale down a first voltage according to an internal voltage to output a second voltage having a lower level than the first voltage, a switching trigger configured to detect that the outputted second voltage falls below a certain voltage level to provide a switching trigger signal, and a switching controller configured to provide a switching control signal for turning on a driving switching element based on the switching trigger signal.
    Type: Application
    Filed: March 28, 2016
    Publication date: October 6, 2016
    Applicant: Magnachip Semiconductor, Ltd.
    Inventor: Seung Woo HONG
  • Publication number: 20160285365
    Abstract: A current compensation circuit includes a current compensator configured to measure a compensation time in which a sensing voltage generated by a driving current passing through a driving switching element drops below a first certain voltage in response to the driving switching element being turned on and configured to delay a turn-off point of the driving switching element from a point in which the sensing voltage reaches a second certain voltage during the measured compensation time and a switching controller configured to provide a switching control signal at a turn-off point of the delayed driving switching element. Such a current compensation circuit accurately controls an average driving current regardless of change of an input voltage and an output voltage and is able to use a peak current mode control method to operate a light emitting diode.
    Type: Application
    Filed: March 11, 2016
    Publication date: September 29, 2016
    Applicant: Magnachip Semiconductor, Ltd.
    Inventor: Seung Woo HONG
  • Publication number: 20160285367
    Abstract: The present disclosure relates to a circuit compensation circuit includes a current compensator configured to perform a charging or a discharging of a capacitive element according to whether a sensing voltage is less than or greater than a certain voltage and to delay a turn-off point of a driving switching element until a corresponding discharging quantity is identical to a corresponding charging quantity and a switching controller configured to provide a switching control signal at the delayed turn-off point of the driving switching element.
    Type: Application
    Filed: March 24, 2016
    Publication date: September 29, 2016
    Applicant: Magnachip Semiconductor, Ltd.
    Inventor: Seung Woo HONG
  • Patent number: 9455629
    Abstract: The present disclosure relates to a circuit compensation circuit includes a current compensator configured to perform a charging or a discharging of a capacitive element according to whether a sensing voltage is less than or greater than a certain voltage and to delay a turn-off point of a driving switching element until a corresponding discharging quantity is identical to a corresponding charging quantity and a switching controller configured to provide a switching control signal at the delayed turn-off point of the driving switching element. The present disclosure also relates to a light emitting diode apparatus that includes such a current compensation circuit, and a related method of driving such a current compensation circuit.
    Type: Grant
    Filed: March 24, 2016
    Date of Patent: September 27, 2016
    Assignee: Magnachip Semiconductor, Ltd.
    Inventor: Seung Woo Hong
  • Publication number: 20160165687
    Abstract: A ballast type detecting circuit includes a ballast signal clamping circuit coupled to a ballast, wherein the ballast signal clamping unit is configured to clamp an output of the ballast, and a ballast type detection circuit configured to compare first and second reference clocks and the clamped output of the ballast to determine a type of the ballast, each of the first and second reference clocks having a frequency lower than an output frequency of a first type ballast and higher than an output frequency of a second type ballast. Thus, the ballast type detecting circuit detects a type of electronic ballast and magnetic ballast based on a digital output signal and decreases a number of outside circuit elements through a ballast type detection based on a digital output signal.
    Type: Application
    Filed: November 13, 2015
    Publication date: June 9, 2016
    Applicant: Magnachip Semiconductor, Ltd.
    Inventor: Seung Woo HONG
  • Publication number: 20160040168
    Abstract: The present invention relates to a composition for treatment or metastasis suppression of cancers which includes a p34 expression inhibitor or activity inhibitor as an active ingredient. According to the present invention, the p34 protein knock-down causes monoubiquitination of PTEN and accordingly nuclear localization of PTEN is induced, as a result, an Akt pathway which is related to survival, proliferation, invasive properties and metastatic properties of tumors is inhibited, and thus there is an effect of significantly reducing clonogenic potential and tumor forming potential of various cancer cells which simultaneously express PTEN and NEDD4-1. Consequently, the p34 gene expression inhibitor or p34 protein activity inhibitor according to the present invention can be effectively used as a treatment agent or a metastasis suppression agent for cancers.
    Type: Application
    Filed: March 27, 2014
    Publication date: February 11, 2016
    Inventors: Tae Won Kim, Dong Hoon Jin, Seung Woo Hong, Jai Hee MOON, Jae Sik Shin, Jin Sun Kim, Kyung Ah Jung, Jung Shin Lee, Eun Kyung Choi, Jae Lyun Lee, Yong Sang Hong, Kyu Pyo Kim, Ky Youb Nam, Bong Cheol Kim
  • Publication number: 20150201442
    Abstract: Provided are methods of ensuring network continuity performed at a local gateway, a fixed gateway, and a network device. The method of ensuring network continuity performed at a local gateway includes establishing a tunnel with a fixed gateway serving as a relay between an Internet service server and the local gateway, and performing communication with the fixed gateway through the tunnel. Therefore, even when the type of an uplink signal received by a local gateway changes or the local gateway is in an uplink signal shadow area, a terminal connected to the local gateway can be provided with a seamless Internet service.
    Type: Application
    Filed: January 12, 2015
    Publication date: July 16, 2015
    Inventors: Sun Cheul KIM, Seung Woo HONG, Young Soo SHIN, Ho Yong RYU
  • Patent number: 8984618
    Abstract: Disclosed are a system for managing virtual private networks (VPNs) includes: terminals configured to transmit user data; a manager configured to transmit information for concealing networks and managing the VPNs; border gateways configured to decrypt the user data and perform a network address translation (NAT) procedure and a filtering procedure on the decrypted user data based on the information; and servers configured to receive the user data subjected to the NAT procedure and the filtering procedure, wherein the filtering procedure is a procedure discarding the user data to be transferred to the servers that are not allowed so as to allow the terminals to access only the allowed servers, the NAT procedure is a procedure changing an Internet protocol (IP) address used in a first network to an IP address used in a second network, and the first network and the second network are different networks.
    Type: Grant
    Filed: September 12, 2012
    Date of Patent: March 17, 2015
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Ho Sun Yoon, Sung Back Hong, Jung Sik Kim, Seong Moon, Sun Cheul Kim, Seung Woo Hong, Sang Jin Hong, Pyung Koo Park, Young Soo Shin, Ho Yong Ryu, Soon Seok Lee
  • Patent number: 8873206
    Abstract: Embodiments of the present invention relate to a switch control circuit, a switch control method, and a power supply device using the same. Embodiments generate a reference signal according to a full-wave rectification voltage and control a switching operation of a power switch according to a comparing result of a sense voltage corresponding to a current flowing to the power switch and the reference voltage. Embodiments determine whether a line is opened between a first output terminal and a second output terminal of the power supply device using the sense voltage. When the line is opened, Embodiments turn off the protection switch.
    Type: Grant
    Filed: January 3, 2012
    Date of Patent: October 28, 2014
    Assignee: Fairchild Korea Semiconductor Ltd.
    Inventors: Young-Je Lee, Gye-Hyun Cho, Seung-Woo Hong, Jae-yong Lee
  • Publication number: 20140301396
    Abstract: Disclosed are a method for constructing a virtual private network, a method for packet forwarding, and a gateway apparatus using the methods. A method for constructing a virtual private network, according to an example embodiment of the present invention, may comprise receiving a first tunnel connection request from the lower gateway, and transmitting a permission message for the first tunnel connection request to the lower gateway; transmitting a second tunnel connection request to the upper gateway, and receiving a permission message for the second tunnel connection request from the upper gateway; and generating a second tunnel, and storing information about the second tunnel in a tunnel routing table.
    Type: Application
    Filed: April 9, 2014
    Publication date: October 9, 2014
    Applicant: ELECTRONICS & TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Seung Woo HONG, Ho Yong RYU
  • Publication number: 20140247924
    Abstract: A radiation shield to locally apply radiation includes a source irradiating the radiation, and a shielding member is formed so that the radiation is incident only to a localized area of an object or a body to be inspected or treated and the other parts are shielded. According to the present invention, since the radiation is applied only to a part to be radiographed or treated, it is possible to provide the radiation shield which may locally irradiate the radiation to an object or a body to be inspected or treated. Furthermore, according to the present invention, it is possible to provide the radiation shield which may be used along with a radiation irradiation apparatus (60Co Therapy, CyberKnife: a collimated source) universally used in existing medical institutions and also may accommodate a separate radioactive source (an uncollimated source) to be used.
    Type: Application
    Filed: December 10, 2013
    Publication date: September 4, 2014
    Applicant: Research & Business Foundation Sungkyunkwan University
    Inventors: Suk Chan LEE, Jae Won SHIN, Seung-Woo HONG, Kangsan ROH, So Yoon PARK, Jae Hyun PARK
  • Patent number: 8803434
    Abstract: A power supply has a TRIAC dimmer, and an AC-DC converter connected to the TRIAC dimmer. The AC-DC converter has a power switch, a bleed switch, and a controller. The controller turns off the bleed switch in a first time duration and turns on the bleed switch in a second time duration. Magnitude of a current of the power switch in the first time duration is larger than magnitude of a current of the power switch in the second time duration. Magnitude of a current of the bleed switch in a third time duration within the second time duration is smaller than magnitude of a current of the bleed switch in a fourth time duration within the second time duration.
    Type: Grant
    Filed: September 21, 2011
    Date of Patent: August 12, 2014
    Assignee: Fairchild Korea Semiconductor Ltd.
    Inventors: Seung Woo Hong, Gye-Hyun Cho, Young-Je Lee, Jae-yong Lee