Patents by Inventor Kyoung Kang

Kyoung Kang 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).

  • OPTICAL TRANSCEIVER OF FLEXIBLE MODULATION FORMAT
    Publication number: 20160233961
    Abstract: An optical transceiver of a flexible modulation format. The optical transceiver may include an optical transmitter to convert an electrical signal to an optical signal and transmit the optical signal, an optical receiver to receive and convert the optical signal to an electrical signal, s and a controller to set modulation formats of the optical transmitter and the optical receivers according to modulation format information.
    Type: Application
    Filed: February 5, 2016
    Publication date: August 11, 2016
    Inventors: Joon Young HUH, Jong Hyun LEE, Joon Ki LEE, Sae Kyoung KANG, Jyung Chan LEE
  • APPARATUS FOR MONITORING OPTICAL SIGNAL
    Publication number: 20160216446
    Abstract: An apparatus for monitoring an optical signal includes a light absorbing layer formed on an optical waveguide consisting of a core layer and upper and lower cladding layers; and a photodiode comprising electrodes arranged on both the optical waveguide and the light absorbing layer.
    Type: Application
    Filed: January 25, 2016
    Publication date: July 28, 2016
    Inventors: Sae Kyoung KANG, Heuk PARK, Sang Soo LEE
  • OPTICAL COUPLING APPARATUS INCLUDING OPTICAL TRANSMITTING AND RECEIVING MODULE
    Publication number: 20160216457
    Abstract: An optical coupling apparatus includes a shell in which a sleeve that guides optical coupling is inserted; a ferrule into which an optical fiber collimator stub is inserted, wherein the optical fiber collimator stub is integrated into one with an optical fiber inserted inside the sleeve and converts an optical signal into a collimated beam; and a housing that surrounds the ferrule.
    Type: Application
    Filed: January 26, 2016
    Publication date: July 28, 2016
    Inventors: Sae Kyoung KANG, Jun Ki LEE, Joon Young HUH, Jong Hyun LEE
  • Multi-wavelength optical signal receiving apparatus and method
    Patent number: 9360641
    Abstract: A multi-wavelength optical signal receiving apparatus receives a multi-wavelength optical signal, demultiplexes the received optical signal to convert into an electric signal. The multi-wavelength optical signal receiving apparatus includes a demultiplexing part including a demultiplexer configured to divide the received multi-wavelength optical signal into a plurality of optical signals by wavelength, a photoelectric conversion part to convert the optical signals into electric signals and amplify the electric signals, and at least one lower securing plate configured to couple the parts by an active alignment method. Accordingly, an additional polishing or coating process is not required, which simplifies the manufacturing process, and it is possible to manufacture the apparatus in blocks, thereby increasing mass-productivity.
    Type: Grant
    Filed: August 25, 2014
    Date of Patent: June 7, 2016
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTI
    Inventors: Joon Ki Lee, Sae-Kyoung Kang, Joon Young Huh
  • Light emitting diode driver apparatus
    Patent number: 9357611
    Abstract: A light emitting diode (LED) driver apparatus includes a pulse-width modulation (PWM) signal generator configured to generate a PWM signal according to a reference voltage. The LED driver apparatus also includes a DC-DC converter configured to provide a driving voltage to LED arrays based on the generated PWM signal, and a LED driver configured to drive the LED arrays through output ports. The LED apparatus includes a detector configured to detect whether the LED arrays are operatively connected to the corresponding output ports.
    Type: Grant
    Filed: May 2, 2013
    Date of Patent: May 31, 2016
    Assignee: Magnachip Semiconductor, Ltd.
    Inventors: Junsik (Samuel) Min, Tae Kyoung Kang, Juseon (Julie) Jang
  • METHOD AND ELECTRONIC DEVICE FOR OPERATING ELECTRONIC PEN
    Publication number: 20160103504
    Abstract: A electronic device includes a display for outputting an input area related to operation of an electronic pen in response to occurrence of a specified event related to the electronic pen, and a processor configured to process a function related to the operation of the electronic pen corresponding to a specific event that occurs on the basis of the input area. An electronic device includes a display comprising an input area for receiving an event for configuring an execution attribute of an electronic pen, and a processor configured to change the execution attribute of the electronic pen if the event is detected through the input area.
    Type: Application
    Filed: October 13, 2015
    Publication date: April 14, 2016
    Inventor: Tae Kyoung Kang
  • POWER FACTOR CORRECTION CONTROL CIRCUIT AND DRIVING METHOD THEREOF
    Publication number: 20160081154
    Abstract: A circuit for adjusting a frequency of an AC direct lighting apparatus is provided. The circuit may include a reference voltage generation unit configured to receive a dimming voltage having a first frequency and a first voltage range, and generate a reference voltage having a second voltage range, a sensing section determining unit configured to generate first and second section reference voltages based on the reference voltage, and determine a driving current sensing section using the first and second section reference voltages, and a driving signal generation unit configured to generate a switching device driving signal having a second frequency through the determined driving current sensing section.
    Type: Application
    Filed: August 6, 2015
    Publication date: March 17, 2016
    Inventors: Gyu Ho LIM, Tae Kyoung KANG, Zhi Yuan CUI
  • Large capacity optical transceiver module
    Patent number: 9287986
    Abstract: A large capacity optical transceiver module includes: an optical transmitter configured to convert electric signals input from an external source into optical signals to transmit the converted signals, in which the electric signals are directly modulated into optical signals in a plurality of sub groups to be multiplexed; and an optical receiver configured to receive optical signals from the external source, and to convert the received optical signals into electric signals to output the converted signals, in which the optical signals are demultiplexed in a plurality of sub groups to be converted into electric signals.
    Type: Grant
    Filed: April 16, 2014
    Date of Patent: March 15, 2016
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Joon Ki Lee, Sae-Kyoung Kang, Joon Young Huh
  • LED driver apparatus
    Patent number: 9271369
    Abstract: A Light Emitting Diode (LED) driving apparatus and a method of driving a LED backlight unit are provided. An LED driving apparatus includes: an input unit configured to receive a dimming signal, an extension unit configured to extend ON time of the inputted dimming signal, an LED driving unit configured to drive an LED array using the extended dimming signal, and a detection unit configured to detect a degradation of the LED array by measuring a forward voltage between the LED array and the LED driving unit.
    Type: Grant
    Filed: August 15, 2012
    Date of Patent: February 23, 2016
    Assignee: Magnachip Semiconductor, Ltd.
    Inventors: Tae-kyoung Kang, Gyo-ho Lim, Hyoung-kyu Kim
  • LED driver circuit having a sensing unit
    Patent number: 9253834
    Abstract: A LED driving circuit having a sensing unit is disclosed. The LED driving circuit includes an input unit configured to receive a dimming signal to drive an LED array, a DC-DC converter including a power transistor configured to perform a switching operation, the DC-DC converter being configured to provide an output voltage to the LED array by the switching operation, a PWM signal generating unit configured to provide a PWM signal to adjust power of the LED array to the power transistor, a LED driving unit configured to drive the LED array using the dimming signal, and a sensing unit configured to sense degradation of the power transistor.
    Type: Grant
    Filed: June 4, 2012
    Date of Patent: February 2, 2016
    Assignee: Magnachip Semiconductor, Ltd.
    Inventors: Hyoung-kyu Kim, Tae-kyoung Kang, Gyu-ho Lim, Jin-wook Kim
  • Ramp circuit and direct current (DC)-DC converter thereof
    Patent number: 9178423
    Abstract: Provided are a ramp circuit and a DC-DC converter. The ramp circuit generates a current flowing in a resistor using voltages affected by an output voltage and an input voltage of a DC-DC converter, and generates a ramp signal through copying of the current and charging and discharging of a capacitor using a current mirror unit. The ramp signal is generated by considering the input voltage and the output voltage, and thus the ramp signal has an optimal slope to provide an adaptive response to state change in the input voltage and the output voltage. The DC-DC converter uses such a ramp circuit to facilitate its operation.
    Type: Grant
    Filed: March 26, 2014
    Date of Patent: November 3, 2015
    Assignee: Magnachip Semiconductor, Ltd.
    Inventors: Jun Sik Min, Hyoung Kyu Kim, Tae Kyoung Kang
  • Hybrid optical coupling module having an alignment mark formed on an optical transmission means and an array lens and manufacturing method thereof
    Patent number: 9110260
    Abstract: Provided are a hybrid optical coupling module and a manufacturing method thereof. The hybrid optical coupling module includes an optical unit configured to include an optical transmission means that transmits an optical signal, and an array lens that is bonded at a point where the optical signal of the optical transmission means is output and focuses the output optical signal, and an electrical unit configured to receive the optical signal focused through the array lens and convert the received optical signal into an electrical signal. Here, an alignment mark is formed on the optical transmission means and the array lens so that the array lens is bonded at the point where the optical signal of the optical transmission means is output.
    Type: Grant
    Filed: August 22, 2013
    Date of Patent: August 18, 2015
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Joon Ki Lee, Sae-Kyoung Kang, Joon Young Huh
  • PHOTODETECTOR
    Publication number: 20150214387
    Abstract: A photodetector is provided. The photodetector includes first metal layers in which optical signals are converted into electric signals; first vias formed between the first metal layers and doped areas which include doped areas on both ends of an optical waveguide and a doped area on a growing portion, which absorbs a light signal transmitted through the optical waveguide; second metal layer in which optical signals are converted into electric signals; and second vias formed between the first metal layers and the second metal layers.
    Type: Application
    Filed: January 8, 2015
    Publication date: July 30, 2015
    Inventors: Sae-Kyoung KANG, Sang-Soo LEE
  • COMPOSITION FOR PREVENTING AND TREATING INFLAMMATORY DISEASES AND IMMUNE DISEASES, CONTAINING APO-9`-FUCOXANTHINONE AS ACTIVE INGREDIENT
    Publication number: 20150182487
    Abstract: The present invention relates to a composition for preventing and treating inflammatory diseases and immune diseases, containing a Sargassum muticum extract and apo-9?-fucoxanthinone as active ingredients. According to the present invention, the Sargassum muticum extract and apo-9?-fucoxanthinone show an excellent inhibiting activity for the generation of IL-12, IL-6 and TNF-?, which are inflammatory cytokines, in a macrophage and a dendritic cell due to a stimulating factor causing an inflammatory response, remarkably inhibit MAPK and AP-1 activity, and inhibit the activity of NLRP3 inflammasome which is known to be involved in the pathogenesis of various immune inflammatory diseases, and thus can be ultimately useful for the development of an agent for treating inflammatory diseases and immune diseases caused by an excessive immune inflammatory response.
    Type: Application
    Filed: March 10, 2015
    Publication date: July 2, 2015
    Inventors: Young-Sang KOH, Eun-Sook YOO, Jin-Won HYUN, Hee-Kyoung KANG, Nam-Ho LEE, In-Soo SUH
  • Optical coupling module for silicon photonics chip
    Patent number: 9042691
    Abstract: An optical coupling module for a silicon photonics chip in which a grating is formed on an optical waveguide, and a material having an intermediate refractive index between refractive indexes of a core and a cladding for side surface optical coupling of the silicon photonics chip is provided. The optical coupling module which is optically coupled with an internal/external optical fiber comprises a core transmitting light, and a cladding covering the core and holding the light in the core through total internal reflection, wherein a grating is formed at one end of the core, and a refractive element is formed between the one end of the core and the cladding, has an intermediate refractive index between the refractive indexes of the core and the cladding, and is optically coupled with the internal/external optical fiber.
    Type: Grant
    Filed: November 15, 2013
    Date of Patent: May 26, 2015
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Sae-Kyoung Kang, Sang-Soo Lee
  • MULTI-WAVELENGTH OPTICAL SIGNAL RECEIVING APPARATUS AND METHOD
    Publication number: 20150139666
    Abstract: A multi-wavelength optical signal receiving apparatus receives a multi-wavelength optical signal, demultiplexes the received optical signal to convert into an electric signal. The multi-wavelength optical signal receiving apparatus includes a demultiplexing part including a demultiplexer configured to divide the received multi-wavelength optical signal into a plurality of optical signals by wavelength, a photoelectric conversion part to convert the optical signals into electric signals and amplify the electric signals, and at least one lower securing plate configured to couple the parts by an active alignment method. Accordingly, an additional polishing or coating process is not required, which simplifies the manufacturing process, and it is possible to manufacture the apparatus in blocks, thereby increasing mass-productivity.
    Type: Application
    Filed: August 25, 2014
    Publication date: May 21, 2015
    Inventors: JOON KI LEE, SAE KYOUNG KANG, JOON YOUNG HUH
  • COMPLEMENTARY METAL-OXIDE-SEMICONDUCTOR (CMOS) INVERTER CIRCUIT DEVICE
    Publication number: 20150109047
    Abstract: There is provided a CMOS inverter circuit device. The CMOS inverter circuit device includes a delay circuit unit configured to generate different charge and discharge paths of each gate node of a PMOS transistor and an NMOS transistor respectively at the time that an input signal transitions between high and low levels. Therefore, the present examples minimize or erase generation of a short circuit current made at the time that the input signal transition. The examples may simplify circuit architecture, and may make a magnitude of a CMOS inverter circuit device smaller.
    Type: Application
    Filed: August 13, 2014
    Publication date: April 23, 2015
    Applicant: MagnaChip Semiconductor, Ltd.
    Inventors: Beom Seon RYU, Gyu Ho LIM, Tae Kyoung KANG
  • Method and apparatus for transmitting a message as an image
    Patent number: 9015347
    Abstract: A message to be transmitted is converted into an image file. The image file is stored and location information about a location where the image file is stored, is generated. The image file is transmitted to at least one device based on the location information.
    Type: Grant
    Filed: April 4, 2012
    Date of Patent: April 21, 2015
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Min-kyoung Kang, Sung-wook Ahn, Eun Namgung, Jong-ho Lee
  • LARGE CAPACITY OPTICAL TRANSCEIVER MODULE
    Publication number: 20150078758
    Abstract: A large capacity optical transceiver module includes: an optical transmitter configured to convert electric signals input from an external source into optical signals to transmit the converted signals, in which the electric signals are directly modulated into optical signals in a plurality of sub groups to be multiplexed; and an optical receiver configured to receive optical signals from the external source, and to convert the received optical signals into electric signals to output the converted signals, in which the optical signals are demultiplexed in a plurality of sub groups to be converted into electric signals.
    Type: Application
    Filed: April 16, 2014
    Publication date: March 19, 2015
    Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Joon Ki LEE, Sae-Kyoung KANG, Joon Young HUH
  • PWM controlling circuit and LED driver circuit having the same
    Patent number: 8941327
    Abstract: A Light Emitting Diode (LED) driver circuit and a Pulse Width Modulation (PWM) controlling circuit thereof is provided. The LED driver circuit includes a voltage detector connected to a plurality of LED arrays, the voltage detector being configured to determine a connection status of each of the LED arrays according to a level of a feedback voltage of each of the LED arrays, and detect a minimum feedback voltage from the feedback voltage of each of the LED arrays that are determined to be connected, a controller configured to output a control signal to control boosting of the LED arrays according to the detected minimum feedback voltage, a PWM signal generator configured to output a PWM signal corresponding to the outputted control signal, and a driving voltage generator configured to supply a driving voltage commonly to the LED arrays according to the PWM signal.
    Type: Grant
    Filed: February 16, 2012
    Date of Patent: January 27, 2015
    Assignee: MagnaChip Semiconductor, Ltd.
    Inventors: Beom-seon Ryu, Chang-sik Lim, Tae-kyoung Kang