Patents by Inventor Ki Seok Yang
Ki Seok Yang 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).
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Publication number: 20240124032Abstract: An automated driving system of a vehicle includes a driver monitoring unit configured to perform at least one of monitoring a gaze of a driver and determining a position of a hand of the driver, an automated-driving-level switching unit configured to determine whether a transition of a driving control over the vehicle is required based on whether driving environment of the vehicle has changed during the vehicle being driven under control of the automated driving system, and determine an automated driving level to be switched based on a driver monitoring result obtained by the drive monitoring unit, and an automated driving control unit configured to control the vehicle according to the automated driving level.Type: ApplicationFiled: June 29, 2023Publication date: April 18, 2024Applicants: Hyundai Motor Company, Kia CorporationInventors: Eun Young CHOI, Woo Jin KIM, Ki Seok SEONG, Dong Il YANG, Da Ye PYUN
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Patent number: 8378749Abstract: Systems and methods may include an amplifier having at least a first input port, where the amplifier includes a first capacitance associated with the first input port; a first bias circuit, where the first bias circuit comprises a series connection of a first charging circuit and a first discharging circuit, wherein a first node between the first charging circuit and the first discharging circuit is connected to the first input port, wherein responsive to an RF input signal having at least a first predetermined level being received at the first input port, the first charging circuit charges the first capacitance associated with the first input port during a first portion of a cycle of the RF input signal, and discharges the first capacitance associated with the first input port during a second portion of the cycle, thereby controlling a DC bias voltage level available at the first input port.Type: GrantFiled: July 29, 2011Date of Patent: February 19, 2013Assignee: Samsung Electro-MechanicsInventors: Woonyun Kim, Jeonghu Han, Ki Seok Yang, Jae Joon Chang, Chang-Ho Lee
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Publication number: 20130027135Abstract: Systems and methods may include an amplifier having at least a first input port, where the amplifier includes a first capacitance associated with the first input port; a first bias circuit, where the first bias circuit comprises a series connection of a first charging circuit and a first discharging circuit, wherein a first node between the first charging circuit and the first discharging circuit is connected to the first input port, wherein responsive to an RF input signal having at least a first predetermined level being received at the first input port, the first charging circuit charges the first capacitance associated with the first input port during a first portion of a cycle of the RF input signal, and discharges the first capacitance associated with the first input port during a second portion of the cycle, thereby controlling a DC bias voltage level available at the first input port.Type: ApplicationFiled: July 29, 2011Publication date: January 31, 2013Applicant: SAMSUNG ELECTRO-MECHANICS COMPANYInventors: Woonyun Kim, Jeonghu Han, Ki Seok Yang, Jae Joon Chang, Chang-Ho Lee
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Publication number: 20120194150Abstract: Systems and methods may include a low-dropout (LDO) voltage regulator for portable communication devices. The systems and methods may include a comparator having first and second inputs and generating a control voltage, the first input receiving a battery voltage from a battery source, the second input receiving a fixed voltage independent from the battery voltage, and a power management circuit that receives the control voltage and provides a regulated voltage based upon the control voltage, wherein when the received battery voltage is above the fixed voltage, the control voltage is provided at a high constant voltage, thereby resulting in the regulated voltage being at a first voltage, and wherein when the battery voltage is below the fixed voltage, the control voltage is provided at a low constant voltage, thereby resulting in the regulated voltage being at a second voltage less than the first voltage.Type: ApplicationFiled: February 1, 2011Publication date: August 2, 2012Applicant: SAMSUNG ELECTRO-MECHANICS COMPANYInventors: Jaejoon Chang, Ki Seok Yang, Jeonghu Han, Woonyun Kim, Chang-Ho Lee
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Patent number: 8044759Abstract: Systems and methods are provided for overlapping compact multiple transformers.Type: GrantFiled: October 12, 2010Date of Patent: October 25, 2011Assignees: Samsung Electro-Mechanics, Georgia Tech Research CorporationInventors: Ki Seok Yang, Jeonghu Han, Jaejoon Chang, Woonyun Kim, Chang-Ho Lee
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Patent number: 7936215Abstract: Embodiments of the invention may provide for power amplifier systems and methods. The systems and methods may include a power amplifier that generates a first differential output signal and a second differential output signal, a primary winding comprised of a plurality of primary segments, where a first end of each primary segment is connected to a first common input port and a second end of each primary segment is connected to a second common input port, where the first common input port is operative to receive the first differential output signal, and where the second common input port is operative to receive the second differential output signal, and a single secondary winding inductively coupled to the plurality of primary segments.Type: GrantFiled: April 1, 2009Date of Patent: May 3, 2011Assignees: Samsung-Electro Mechanics, Georgia Tech Research CorporationInventors: Chang-Ho Lee, Ockgoo Lee, Jeonghu Han, Kyu Hwan An, Hyungwook Kim, Dong Ho Lee, Ki Seok Yang, Haksun Kim, Joy Laskar
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Publication number: 20110043316Abstract: Systems and methods are provided for overlapping compact multiple transformers.Type: ApplicationFiled: October 12, 2010Publication date: February 24, 2011Inventors: Ki Seok Yang, Jeonghu Han, Jaejoon Chang, Woonyun Kim, Chang-Ho Lee
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Patent number: 7880547Abstract: Systems and methods may be provided for a power amplifier system. The systems and methods may include a plurality of power amplifiers, where each power amplifier includes at least one output port. The systems and methods may also include a plurality of primary windings each having a first number of turns, where each primary winding is connected to at least one output port of the plurality of power amplifiers, and a single secondary winding inductively coupled to the plurality of primary windings, where the secondary winding includes a second number of turns greater than the first number of turns.Type: GrantFiled: February 24, 2010Date of Patent: February 1, 2011Assignees: Samsung Electro-Mechanics, Georgia Tech Research CorporationInventors: Chang-Ho Lee, Kyu Hwan An, Ki Seok Yang, Jaejoon Chang, Wangmyong Woo, Younsuk Kim, Haksun Kim, Ockgoo Lee, Dong Ho Lee, Hyungwook Kim, Joy Laskar
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Patent number: 7812701Abstract: Example embodiments of the invention may provide systems and methods for multiple transformers. The systems and methods may include a first transformer that may include a first primary winding and a first secondary winding, where the first primary winding may be inductively coupled to the first secondary winding, where the first transformer may be associated with a first rotational current flow direction in the first primary winding.Type: GrantFiled: January 8, 2008Date of Patent: October 12, 2010Assignees: Samsung Electro-Mechanics, Georgia Tech Research CorporationInventors: Dong Ho Lee, Ki Seok Yang, Chang-Ho Lee, Haksun Kim, Joy Laskar
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Patent number: 7768353Abstract: Embodiments of the invention may provide for enhancement systems and methods for a power amplifier output control system. In an example embodiment, driver amplifier control may be provided in conjunction with power amplifier control to improve the power efficiency and/or dynamic range of the transmitter system. Furthermore, control over the driver amplifier may allow for relaxed power control slope, which may lessens the burden of digital to analog converters (DACs) in transmitter systems such as cellular transmitter systems. Also, systems and methods in accordance with example embodiments of the invention may provide a less sensitive solution to operational environment variations such as temperature, battery power voltage and implementation IC process.Type: GrantFiled: June 13, 2008Date of Patent: August 3, 2010Assignee: Samsung Electro-Mechanics Company, Ltd.Inventors: Jaejoon Chang, Ki Seok Yang, Kyu Hwan An, Wangmyong Woo, Chang-Ho Lee, Younsuk Kim, Hyogun Bae, Kijoong Kim, Shinichi Iizuka
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Patent number: 7746174Abstract: Embodiments of the invention may provide for systems and methods for providing a power amplifier with integrated passive device, thereby improving the performance of the power amplifier. The power amplifier may include a signal amplification section, a power combining section, and a coupling device section that interconnects the signal amplification section and the power combining section. The signal amplification section may be implemented on a first substrate, and the power combining section may be implemented on a second substrate, where the first substrate and the second substrate may be different. The power combining section may be implemented by the integrated passive device (IPD) that may have characteristics of high performance passive device with flexibility of implementing diverse functions, including a notch filter, a low pass filter, and/or bypass capacitance for bias network. The power combining section implemented by the integrated passive device may have an improved power combining efficiency.Type: GrantFiled: June 12, 2008Date of Patent: June 29, 2010Assignee: Samsung Electro-Mechanics Company, Ltd.Inventors: Ki Seok Yang, Jaejoon Chang, Kyu Hwan An, Wangmyong Woo, Chang-Ho Lee, Younsuk Kim, Hyogun Bae, Kijoong Kim, Shinichi Iizuka
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Publication number: 20100148866Abstract: Systems and methods may be provided for a power amplifier system. The systems and methods may include a plurality of power amplifiers, where each power amplifier includes at least one output port. The systems and methods may also include a plurality of primary windings each having a first number of turns, where each primary winding is connected to at least one output port of the plurality of power amplifiers, and a single secondary winding inductively coupled to the plurality of primary windings, where the secondary winding includes a second number of turns greater than the first number of turns.Type: ApplicationFiled: February 24, 2010Publication date: June 17, 2010Applicants: SAMSUNG ELECTRO-MECHANICS COMPANY, GEORGIA TECH RESEARCH CORPORATIONInventors: Chang-Ho Lee, Kyu Hwan An, Ki Seok Yang, Jaejoon Chang, Wangmyong Woo, Younsuk Kim, Haksun Kim, Ockgoo Lee, Dong Ho Lee, Hyungwook Kim, Joy Laskar
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Patent number: 7675365Abstract: Systems and methods may be provided for a power amplifier system. The systems and methods may include a plurality of power amplifiers, where each power amplifier includes at least one output port. The systems and methods may also include a plurality of primary windings each having a first number of turns, where each primary winding is connected to at least one output port of the plurality of power amplifiers, and a single secondary winding inductively coupled to the plurality of primary windings, where the secondary winding includes a second number of turns greater than the first number of turns.Type: GrantFiled: December 26, 2007Date of Patent: March 9, 2010Assignees: Samsung Electro-Mechanics, Georgia Tech Research CorporationInventors: Chang-Ho Lee, Kyu Hwan An, Ki Seok Yang, Jaejoon Chang, Wangmyong Woo, Younsuk Kim, Haksun Kim, Ockgoo Lee, Dong Ho Lee, Hyungwook Kim, Joy Laskar
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Patent number: 7642858Abstract: Example embodiments of the invention may provide for active baluns. An example active balun may include a resonator that may convert a single-ended input signal to at least two differential input signals, and a differential switching block that includes first and second transistors that each receive a respective one of the at least two differential input signals from the resonator, where the first and second transistors may be cross-coupled to each other to provide a first differential output signal and a second differential output signal. An example active balun may further include one or more loads connected to the first and second differential output signals, and one or more stacked inverters that may provide a first output port and a second output port, where the first output port may be responsive to the first differential output signal and the second output port may be responsive to the second differential output signal.Type: GrantFiled: January 7, 2008Date of Patent: January 5, 2010Assignees: Samsung Electro-Mechanics Company, Georgia Tech Research CorporationInventors: Dong Ho Lee, Ki Seok Yang, Yunseok Kim, Sanghee Kim, Hyogeun Bae, Kijoong Kim, Li Lee, Songcheol Hong, Chang-Ho Lee, Haksun Kim, Joy Laskar
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Publication number: 20090309662Abstract: Embodiments of the invention may provide for systems and methods for providing a power amplifier with integrated passive device, thereby improving the performance of the power amplifier. The power amplifier may include a signal amplification section, a power combining section, and a coupling device section that interconnects the signal amplification section and the power combining section. The signal amplification section may be implemented on a first substrate, and the power combining section may be implemented on a second substrate, where the first substrate and the second substrate may be different. The power combining section may be implemented by the integrated passive device (IPD) that may have characteristics of high performance passive device with flexibility of implementing diverse functions, including a notch filter, a low pass filter, and/or bypass capacitance for bias network. The power combining section implemented by the integrated passive device may have an improved power combining efficiency.Type: ApplicationFiled: June 12, 2008Publication date: December 17, 2009Inventors: Ki Seok Yang, Jaejoon Chang, Kyu Hwan An, Wangmyong Woo, Chang-Ho Lee, Younsuk Kim, Hyogun Bae, Kijoong Kim, Shinichi Iizuka
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Publication number: 20090309661Abstract: Embodiments of the invention may provide for enhancement systems and methods for a power amplifier output control system. In an example embodiment, driver amplifier control may be provided in conjunction with power amplifier control to improve the power efficiency and/or dynamic range of the transmitter system. Furthermore, control over the driver amplifier may allow for relaxed power control slope, which may lessens the burden of digital to analog converters (DACs) in transmitter systems such as cellular transmitter systems. Also, systems and methods in accordance with example embodiments of the invention may provide a less sensitive solution to operational environment variations such as temperature, battery power voltage and implementation IC process.Type: ApplicationFiled: June 13, 2008Publication date: December 17, 2009Inventors: Jaejoon Chang, Ki Seok Yang, Kyu Hwan An, Wangmyong Woo, Chang-Ho Lee, Younsuk Kim, Hyogun Bae, Kijoong Kim, Shinichi Iizuka
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Patent number: 7576607Abstract: Embodiments of the invention may provide for power amplifier systems and methods. The systems and methods may include a power amplifier that generates a first differential output signal and a second differential output signal, a primary winding comprised of a plurality of primary segments, where a first end of each primary segment is connected to a first common input port and a second end of each primary segment is connected to a second common input port, where the first common input port is operative to receive the first differential output signal, and where the second common input port is operative to receive the second differential output signal, and a single secondary winding inductively coupled to the plurality of primary segments.Type: GrantFiled: January 3, 2008Date of Patent: August 18, 2009Assignees: Samsung Electro-Mechanics, Georgia Tech Research CorporationInventors: Chang-Ho Lee, Ockgoo Lee, Jeonghu Han, Kyu Hwan An, Hyungwook Kim, Dong Ho Lee, Ki Seok Yang, Haksun Kim, Joy Laskar
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Publication number: 20090184786Abstract: Embodiments of the invention may provide for power amplifier systems and methods. The systems and methods may include a power amplifier that generates a first differential output signal and a second differential output signal, a primary winding comprised of a plurality of primary segments, where a first end of each primary segment is connected to a first common input port and a second end of each primary segment is connected to a second common input port, where the first common input port is operative to receive the first differential output signal, and where the second common input port is operative to receive the second differential output signal, and a single secondary winding inductively coupled to the plurality of primary segments.Type: ApplicationFiled: April 1, 2009Publication date: July 23, 2009Inventors: Chang-Ho Lee, Ockgoo Lee, Jeonghu Han, Kyu Hwan An, Hyungwook Kim, Dong Ho Lee, Ki Seok Yang, Haksun Kim, Joy Laskar
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Patent number: 7560994Abstract: Example embodiments of the invention may provide systems and methods for a power amplifier. The systems and methods may include a first common-source device having a first source, a first gate, a first drain, and a first body, where the first source is connected to the first body, and wherein the first gate is connected to an input port. The systems and methods may further include a second common-gate device having a second source, a second gate, a second drain, and a second body, where the second source is connected to the first drain, where the second source is further connected to the second body, and where the second drain is connected to an output port.Type: GrantFiled: January 3, 2008Date of Patent: July 14, 2009Assignees: Samsung Electro-Mechanics Company, Georgia Tech Research CorporationInventors: Ockgoo Lee, Jeonghu Han, Kyu Hwan An, Hyungwook Kim, Dong Ho Lee, Ki Seok Yang, Chang-Ho Lee, Haksun Kim, Joy Laskar
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Publication number: 20090174477Abstract: Embodiments of the invention may provide for power amplifier systems and methods. The systems and methods may include a power amplifier that generates a first differential output signal and a second differential output signal, a primary winding comprised of a plurality of primary segments, where a first end of each primary segment is connected to a first common input port and a second end of each primary segment is connected to a second common input port, where the first common input port is operative to receive the first differential output signal, and where the second common input port is operative to receive the second differential output signal, and a single secondary winding inductively coupled to the plurality of primary segments.Type: ApplicationFiled: January 3, 2008Publication date: July 9, 2009Inventors: Chang-Ho Lee, Ockgoo Lee, Jeonghu Han, Kyu Hwan An, Hyungwook Kim, Dong Ho Lee, Ki Seok Yang, Haksun Kim, Joy Laskar