Patents by Inventor Tae-kyoung Kang

Tae-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).

  • Patent number: 10442796
    Abstract: The present invention relates to a novel 2,3,5-substituted thiophene compound having inhibitory activity against kinases, an anticancer agent including the compound as an active ingredient, and a method for preparing the compound.
    Type: Grant
    Filed: August 16, 2018
    Date of Patent: October 15, 2019
    Assignees: Korea Institute of Science and Technology, Daegu-Gyeongbuk Medical Innovation Foundation
    Inventors: Tae Bo Sim, Woo Young Hur, Chi Man Song, Ho Jong Yoon, Seung Hye Choi, Han Na Cho, Hwan Geun Choi, Nam Doo Kim, Jung Beom Son, Eun Hwa Ko, Hyun Kyoung Kim, Joong Heui Cho, Seock Yong Kang, So Young Kim, Yi Kyung Ko, Seung Yeon Lee, Suk Kyoon Yoon, Jae Hyun Bae
  • Patent number: 10428055
    Abstract: The present invention relates to a substituted piperidines represented by following Chemical Formula 1, which have a GPR119 agonistic activity, a method for preparing the same, and a pharmaceutical composition including the same: wherein A, B, and X are defined therein.
    Type: Grant
    Filed: July 24, 2015
    Date of Patent: October 1, 2019
    Assignee: DONG-A ST CO., LTD.
    Inventors: Jae Sung Yang, Gye Rim Baek, Yoon Jung Kim, Chi Young Ahn, Jae Young Lee, Il Hoon Jung, Mi Kyung Kim, So Mi Kang, Hyo Ju Lee, Yu Na Chae, Ye Hwang Cheong, Tae Hyoung Kim, Eun Kyoung Yang, Moon Ho Son, Chang Yell Shin
  • Patent number: 10243558
    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: Grant
    Filed: January 4, 2017
    Date of Patent: March 26, 2019
    Assignee: MagnaChip Semiconductor, Ltd.
    Inventors: Beom Seon Ryu, Gyu Ho Lim, Tae Kyoung Kang
  • Patent number: 10231302
    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: Grant
    Filed: August 6, 2015
    Date of Patent: March 12, 2019
    Assignee: MAGNACHIP SEMICONDUCTOR, LTD.
    Inventors: Gyu Ho Lim, Tae Kyoung Kang, Zhi Yuan Cui
  • Publication number: 20190056836
    Abstract: According to an embodiment, a method for operating an electronic device may comprise operating touch circuitry configured to detect a touch or hovering according to a first driving signal in a first operation mode, detecting a first event related to mode switching, and operating the touch circuitry according to a second driving signal different from the first driving signal in a second operation mode based on detecting the first event. Other embodiments are also possible.
    Type: Application
    Filed: August 17, 2018
    Publication date: February 21, 2019
    Inventors: Sang-Yup LEE, Tae-Kyoung KANG, Yeon-Hwan KIM, Jun-Ho KO, Young-Jun AN, Won-Woo YOO, Ji-Young LIM, Jang-Hoon HONG, Hyun-Suk CHOI
  • Patent number: 9958967
    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: Grant
    Filed: October 13, 2015
    Date of Patent: May 1, 2018
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventor: Tae Kyoung Kang
  • Patent number: 9888552
    Abstract: A detection circuit configured to detect a short in a plurality of LED arrays is provided. The detection circuit includes a voltage measuring unit, a short detecting unit, and a detection control unit. The voltage measuring unit is configured to measure respective feedback voltages of the plurality of LED arrays and output a lowest measured feedback voltage as a first feedback voltage. The short detecting unit is configured to detect the short in the LED arrays using the measured feedback voltages. The detection control unit is configured to control the short detecting unit to stop short detection operation, when the first feedback voltage exceeds a first preset reference voltage.
    Type: Grant
    Filed: December 4, 2012
    Date of Patent: February 6, 2018
    Assignee: Magnachip Semiconductor, Ltd.
    Inventors: Tae-kyoung Kang, Gyu-ho Lim, Beom-seon Ryu, Jun-sik Min
  • Patent number: 9875697
    Abstract: A Light Emitting Diode (LED) driver apparatus and a method of driving an LED array are provided. A Light Emitting Diode (LED) driver apparatus includes: a DC-DC converter configured to supply a driving voltage to an LED array, a plurality of LED drivers configured to drive the LED array according to a dimming signal, in which the plurality of LED drivers are connected to one another in parallel to supply currents to the LED array.
    Type: Grant
    Filed: August 15, 2012
    Date of Patent: January 23, 2018
    Assignee: Magnachip Semiconductor, Ltd.
    Inventors: Tae-kyoung Kang, Su-jin Lee, Gyu-ho Lim
  • Patent number: 9825634
    Abstract: A level shifting circuit includes a transistor output unit that receives a first power supply signal and convert the first power supply signal to a second power supply signal having a different level from the first power supply signal and a current provision unit that provides a current to an output terminal of the transistor output unit when the first power supply signal of the transistor output unit is inputted to shorten a prolonged portion of the second power supply signal. Therefore, the level shifting circuit may provide an additional current to the output terminal of the transistor output unit to shorten a prolonged portion of the output voltage.
    Type: Grant
    Filed: July 13, 2016
    Date of Patent: November 21, 2017
    Assignee: MagnaChip Semiconductor, Ltd.
    Inventors: Seok Min Hong, Tae Kyoung Kang, Jun Sik Min
  • Publication number: 20170117894
    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: January 4, 2017
    Publication date: April 27, 2017
    Applicant: MagnaChip Semiconductor, Ltd.
    Inventors: Beom Seon RYU, Gyu Ho LIM, Tae Kyoung KANG
  • Patent number: 9635746
    Abstract: A detecting circuit and method thereof are configured to detect whether an LED array is open is described. The detecting circuit includes a resistance unit, a first switching unit, and an output unit. The resistance unit is operatively connected in series to the LED array. The switching unit is configured to be turned on when a voltage of the resistance unit is greater than or equal to a predetermined voltage level. The output unit is configured to produce an output indicative of whether the LED array is open, based whether the first switching unit is turned on.
    Type: Grant
    Filed: December 4, 2012
    Date of Patent: April 25, 2017
    Assignee: Magnachip Semiconductor, Ltd.
    Inventors: Jun-sik Min, Tae-kyoung Kang, Beom-seon Ryu
  • Patent number: 9603220
    Abstract: A light-emitting diode (LED) driver apparatus is provided. The LED driver apparatus includes a pulse width modulation (PWM) signal generating unit, a DC-DC converter, and a comparison voltage generating unit. The PWM signal generating unit generates a PWM signal according to a comparison voltage. The DC-DC converter supplies a driving voltage of an LED array by using the PWM signal. The comparison voltage generating unit measures a feedback voltage of the LED array and supplies a difference between the measured feedback voltage and a target voltage as a comparison voltage to the PWM signal generating unit. The comparison voltage generating unit supplies a second reference voltage as a comparison voltage to the PWM signal generating unit from a time when the driving voltage is higher than or equal to a first reference voltage to a time when the driving voltage reaches the target voltage.
    Type: Grant
    Filed: December 4, 2012
    Date of Patent: March 21, 2017
    Assignee: Magnachip Semiconductor, Ltd.
    Inventor: Tae-kyoung Kang
  • Publication number: 20170026042
    Abstract: A level shifting circuit includes a transistor output unit that receives a first power supply signal and convert the first power supply signal to a second power supply signal having a different level from the first power supply signal and a current provision unit that provides a current to an output terminal of the transistor output unit when the first power supply signal of the transistor output unit is inputted to shorten a prolonged portion of the second power supply signal. Therefore, the level shifting circuit may provide an additional current to the output terminal of the transistor output unit to shorten a prolonged portion of the output voltage.
    Type: Application
    Filed: July 13, 2016
    Publication date: January 26, 2017
    Inventors: Seok Min HONG, Tae Kyoung KANG, Jun Sik MIN
  • 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
  • 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
  • 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
  • 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
  • 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
  • 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
  • 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