Patents by Inventor Yil Suk Yang
Yil Suk 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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Patent number: 9083032Abstract: A lithium rechargeable battery includes a cathode plate having a cathode current collector layer; and a cathode layer composed of particles of a cathode active material; an anode plate that is spaced apart from the cathode plate and having an anode current collector layer and an anode layer composed a mixed anode active material that is a mixture including particles of a spinel lithium titanium oxide (Li4Ti5O12) and nanotubes of a lithium titanium oxide (LixTiO2, where 0<x<2); and a polymer electrolyte disposed between the cathode plate and the anode plate. The cathode active material may contain only one cathode active material or be a mixed cathode active material composed of a mixture of particles of carbon-coated lithium iron phosphate (LiFePO4) that are nanoparticles of lithium iron phosphate coated with carbon particles and particles of a lithium transition metal oxide.Type: GrantFiled: November 1, 2011Date of Patent: July 14, 2015Assignee: INTELLECTUAL DISCOVERY CO., LTD.Inventors: Young-Gi Lee, Kwang Man Kim, Min Gyu Choi, Kunyoung Kang, Yil Suk Yang, Jongdae Kim
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Publication number: 20150180336Abstract: Provided is a maximum power tracking apparatus. The apparatus includes a battery outputting first power, a switching unit, in response to a switching control signal, converting the first power into second power, and a pulse signal generation unit, based on the first power, controlling a pulse width of the switching control signal and controlling a frequency of the switching control signal.Type: ApplicationFiled: May 29, 2014Publication date: June 25, 2015Applicant: Electronics and Telecommunications Research InstituteInventors: Sewan HEO, Yil Suk YANG
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Publication number: 20150145494Abstract: Provided is a maximum power tracking device. The device includes: a battery outputting a first power; a switching unit changing the first power into a second power in response to a switching control signal; and a pulse modulation generation unit adjusting a pulse width of the switching control signal on the basis of the first power and adjusting a frequency of the switching control signal on the basis of the first power and the second power.Type: ApplicationFiled: May 2, 2014Publication date: May 28, 2015Applicant: Electronics and Telecommunications Research InstituteInventors: Sewan HEO, Yil Suk YANG
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Patent number: 9000737Abstract: Provided is a maximum power extraction devices including: a battery; a voltage control unit adjusting a size of a first power outputted from the battery according to a resistor selected from a plurality of resistors, and generating a compare signal according to a size difference between an operating voltage adjusting the size of the first power depending on the selected resistor and a reference voltage; a switching unit connected between the battery and a load and adjusting a size of the operating voltage according to a size difference of the compare signal in response to first and second switching control signals; a switching control unit generating the first and second switching control signals to allow a size between the operating voltage according to the compare signal and the reference voltage to be within an error range; and a maximum power control unit measuring the number of first operations obtained by counting the occurrence number of the first or second switching control signals for a predeterminedType: GrantFiled: May 28, 2013Date of Patent: April 7, 2015Assignee: Electronics and Telecommunications Research InstituteInventors: Sewan Heo, Yil Suk Yang, Jong-Kee Kwon
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Publication number: 20150084556Abstract: Provided is a motor driving circuit which transmits a driving signal to a motor, including a gate driver generating the driving signal corresponding to a pulse width modulation signal, a pulse width modulation signal generator generating the pulse width modulation signal according to Hall sensor signals received from Hall sensors mounted in the motor, a current sensor measuring a link current provided to the gate driver, a low pass filter outputting a filter current that high frequency components are removed from the measured link current, and a minimum power consumption estimating unit generating a lead angle according to a start signal with reference to the filter current, wherein the pulse with modulating signal is changed according to the lead angle.Type: ApplicationFiled: March 7, 2014Publication date: March 26, 2015Applicant: Electronics and Telecommunications Research InstituteInventors: Jimin OH, Minki KIM, Jung Hee SUK, Sewan HEO, Yil Suk YANG
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Patent number: 8975692Abstract: Provided are a semiconductor device and a method of fabricating the same. The method includes: forming a trench in a semiconductor substrate of a first conductive type; forming a trench dopant containing layer including a dopant of a second conductive type on a sidewall and a bottom surface of the trench; forming a doping region by diffusing the dopant in the trench dopant containing layer into the semiconductor substrate; and removing the trench dopant containing layer.Type: GrantFiled: December 9, 2013Date of Patent: March 10, 2015Assignee: Electronics and Telecommunications Research InstituteInventors: Sang Gi Kim, Jin-Gun Koo, Seong Wook Yoo, Jong-Moon Park, Jin Ho Lee, Kyoung Il Na, Yil Suk Yang, Jongdae Kim
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Patent number: 8963404Abstract: Energy harvesting devices are provided. The energy harvesting device includes a body, a proof mass spaced apart from the body, a cantilever extending from the body onto the proof mass, a first electrode layer on the cantilever opposite to the body, a first piezoelectric layer on the first electrode layer, a second electrode layer on the first piezoelectric layer, a second piezoelectric layer on the second electrode layer, a pair of third electrode layers on the second piezoelectric layer, and a magnetic layer between the second electrode layer and the second piezoelectric layer. Related methods are also provided.Type: GrantFiled: September 7, 2012Date of Patent: February 24, 2015Assignee: Electronics and Telecommunications Research InstituteInventors: Sang Kyun Lee, Moonkeun Kim, Yil Suk Yang
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Patent number: 8957661Abstract: Disclosed is a DC-DC converter, including: a switch unit configured to generate output voltage for driving a load; an output voltage monitoring unit including a reference voltage generator generating reference voltage and a reference voltage capacitor maintaining the reference voltage when power of the reference voltage generator is interrupted and configured to generate a signal for setting the output voltage as the reference voltage; a switch controlling unit configured to control the switch unit by being operated in a pulse width modulation (PWM) mode or a pulse frequency modulation (PFM) mode by using the signal of the output voltage monitoring unit; and a mode determining and power interrupting unit configured to set an operating mode of the switch controlling unit as the PWM mode or the PFM mode according to a magnitude of the load and interrupt power of the reference voltage generator when operated in the PFM mode.Type: GrantFiled: September 11, 2012Date of Patent: February 17, 2015Assignee: Electronics and Telecommunications Research InstituteInventors: Sewan Heo, Yil Suk Yang, Jong Kee Kwon
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Patent number: 8937472Abstract: Disclosed is a DC-DC converter including: a switch unit controlling a flow of a current based on a buck-boost topology; a short circuit unit short circuited or opened according to an external setting to change a topology of the switch unit; an inductor storing a current induced by the switch unit; a topology selecting unit selecting a topology in response to an external input signal and generating a signal corresponding to the selected topology; a pulse width modulating unit generating a signal for determining an operation time of the switch unit; a reverse flow detecting unit detecting a reverse flow of a current flowing through the switch unit to generate a signal; and a switch control unit controlling the switch unit in response to signals of the topology selecting unit, the pulse width modulating unit and the reverse flow detecting unit.Type: GrantFiled: July 3, 2012Date of Patent: January 20, 2015Assignee: Electronics and Telecommunications Research InstituteInventors: Sewan Heo, Yil Suk Yang, Jong Kee Kwon
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Publication number: 20150002062Abstract: Provided is a motor including a motor driving unit outputting a plurality of switching signals and any one of estimated three-phase voltages, in response to a control signal and a compensated position signal; a pulse width modulation (PWM) inverter outputting three-phase voltages and any one of estimated three-phase currents corresponding to the one estimated phase voltage, in response to the plurality switching signals; a motor unit operating based on the three-phase voltages and outputting a position signal according to the operation; and a position signal compensation unit receiving the position signal, the estimated phase voltage and the estimated phase current, detecting a phase difference between the estimated phase voltage and the estimated phase current and compensating for the position signal in response to the detected phase difference.Type: ApplicationFiled: January 6, 2014Publication date: January 1, 2015Applicant: Electronics and Telecommunications Research InstituteInventors: Minki KIM, Yil Suk YANG, Jimin OH, Jung Hee SUK, Sewan HEO
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Patent number: 8896379Abstract: Provided is an error amplifier. The error amplifier includes: an amplifying unit receiving first and second input signals and amplifying a voltage difference between the received first and second input signals; a first voltage generating unit generating first and second driving voltages for driving the amplifying unit; a second voltage generating unit generating first and second body voltages to implement a body biasing method; a cascode current source including first to fourth PMOS transistors to provide a bias current to the amplifying unit and the first voltage generating unit; and an output unit outputting a signal of the voltage difference amplified by the amplifying unit, wherein the first and third PMOS transistors receive the first body voltage through a body terminal and the second and fourth PMOS transistors receive the second body voltage through a body terminal.Type: GrantFiled: March 15, 2013Date of Patent: November 25, 2014Assignees: Electronics and Telecommunications Research Institute, Industry-Academic Cooperation Foundation, Dankook UniversityInventors: Yil Suk Yang, Jongdae Kim, Yong-Seo Koo
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Patent number: 8823299Abstract: Disclosed is a power supply module for a hall sensorless BLDC motor, including: a high-voltage/large-current power device t applied with high voltage/large current and including a plurality of power devices driving the hall sensorless brushless direct current (BLDC) motor; a motor driving circuit sensing and controlling a positional signal or a velocity signal of the hall sensorless BLDC motor and generating a PWM control signal for controlling the hall sensorless BLDC motor; and a power device driving circuit driving the high-voltage/large-current power device according to the PWM control signal of the motor driving circuit, wherein the high-voltage/large-current power device, the power device driving circuit, and the motor driving circuit are CMOS-integrated on the same substrate.Type: GrantFiled: November 1, 2011Date of Patent: September 2, 2014Assignee: Electronics and Telecommunications Research InstituteInventors: Yil Suk Yang, Jongdae Kim, Sewan Heo, Sang Gi Kim, Jimin Oh, Minki Kim
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Publication number: 20140176108Abstract: Provided is a maximum power extraction devices including: a battery; a voltage control unit adjusting a size of a first power outputted from the battery according to a resistor selected from a plurality of resistors, and generating a compare signal according to a size difference between an operating voltage adjusting the size of the first power depending on the selected resistor and a reference voltage; a switching unit connected between the battery and a load and adjusting a size of the operating voltage according to a size difference of the compare signal in response to first and second switching control signals; a switching control unit generating the first and second switching control signals to allow a size between the operating voltage according to the compare signal and the reference voltage to be within an error range; and a maximum power control unit measuring the number of first operations obtained by counting the occurrence number of the first or second switching control signals for a predeterminedType: ApplicationFiled: May 28, 2013Publication date: June 26, 2014Applicant: Electronics and Telecommunications Research InstituteInventors: Sewan HEO, Yil Suk Yang, Jong-Kee Kwon
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Publication number: 20140159631Abstract: Provided is a motor position detecting unit that includes a first computing element configured to output three-phase back-electromotive foreces (back-EMFs) based on a linear computation; a second computing element configured to output three-phase back-EMF based on a non-linear computation; and a computing controller configured to receive a control signal, three-phase voltage and current, and selecting any one of the first and second computing elements based on the received control signal, the received three-phase voltages and currents, wherein the control signal includes information on operation modes of an external motor.Type: ApplicationFiled: June 4, 2013Publication date: June 12, 2014Inventors: Jung Hee SUK, Jimin OH, Minki KIM, Yil Suk YANG
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Publication number: 20140159632Abstract: A motor driving module is provided which includes a motor driving unit configured to control a PWM inverter on the basis of positional information and a control signal; a PWM inverter configured to output three-phase voltages on the basis of DC power according to control of the motor driving unit; a phase voltage estimating unit configured to output three-phase estimated voltages on the basis of the positional information, the DC power, and a voltage modulation index; and a position detecting unit configured to output the positional information on the basis of the three-phase estimated voltages, wherein the positional information is on an external motor that operates on the basis of the three-phase voltages.Type: ApplicationFiled: June 5, 2013Publication date: June 12, 2014Inventors: Minki KIM, Jimin Oh, Jung Hee Suk, Yil Suk Yang
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Publication number: 20140159625Abstract: The inventive concept provides a motor driving module, a operating method for the same, and a Brush less Direct Current (BLDC) motor system. The motor driving module is provided which comprises a motor driving unit configured to output a plurality of switching signals based on a plurality of position signals and a control signal; and a Pulse Width Modulation (PWM) inverter configured to output 3-phase voltages based on the plurality of switching signals outputted from the motor driving unit, wherein the motor driving unit comprises; a correction circuit configured to detect an error of the plurality of position signals to output a compensation signal based on the detecting result; and a control circuit configured to output the plurality of switching signals based on the compensation signal and the control signal, wherein the plurality of position signals indicate a position of a rotor in an external motor.Type: ApplicationFiled: August 5, 2013Publication date: June 12, 2014Applicant: Electronics and Telecommunications Research InstituteInventors: Jimin Oh, Minki Kim, Jung Hee Suk, Yil Suk Yang
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Publication number: 20140159542Abstract: A flexible piezoelectric energy harvesting device includes a first flexible electrode substrate, a piezoelectric layer disposed on the first flexible electrode substrate, and a second flexible electrode substrate disposed on the piezoelectric layer. The piezoelectric layer may include a plurality of first piezoelectric lines spaced apart from each other in one direction and a plurality of second piezoelectric lines respectively filling spaces between the first piezoelectric lines.Type: ApplicationFiled: June 3, 2013Publication date: June 12, 2014Inventors: Sang Kyun LEE, Yil Suk YANG, Jong-Kee KWON
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Patent number: 8731059Abstract: An apparatus that calculates a Sum of Absolute Differences (SAD) for motion estimation of a variable block capable of parallelly calculating SAD values with respect to multiple current frame macroblocks at a time is presented. The apparatus includes a PE array unit including at least one Processing Element (PE) that is aligned in the form of a matrix, and parallelly calculating a SAD value of at least one pixel provided in multiple serial current frame macroblocks, a local memory including current frame macroblock data, reference frame macroblock data, and reference frame search area data, and transmitting the data to each PE that is provided in the PE array unit, and a controller for making a command for the data that are provided in the local memory to be transmitted corresponding to at least one pixel, on which each PE provided in the PE array unit performs calculation.Type: GrantFiled: April 18, 2008Date of Patent: May 20, 2014Assignee: Electronics and Telecommunications Research InstituteInventors: Yil Suk Yang, Jung Hee Suk, Chun Gi Lyuh, Ik Jae Chun, Tae Moon Roh, Jong Dae Kim, Ki Chul Kim, Jung Hoon Kim
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Publication number: 20140091388Abstract: Provided are a semiconductor device and a method of fabricating the same. The method includes: forming a trench in a semiconductor substrate of a first conductive type; forming a trench dopant containing layer including a dopant of a second conductive type on a sidewall and a bottom surface of the trench; forming a doping region by diffusing the dopant in the trench dopant containing layer into the semiconductor substrate; and removing the trench dopant containing layer.Type: ApplicationFiled: December 9, 2013Publication date: April 3, 2014Applicant: Electronics and Telecommunications Research InstituteInventors: Sang Gi KIM, Jin-Gun KOO, Seong Wook YOO, Jong-Moon PARK, Jin Ho LEE, KYOUNG IL NA, Yil Suk Yang, Jongdae KIM
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Patent number: 8629020Abstract: Provided are a semiconductor device and a method of fabricating the same. The method includes: forming a trench in a semiconductor substrate of a first conductive type; forming a trench dopant containing layer including a dopant of a second conductive type on a sidewall and a bottom surface of the trench; forming a doping region by diffusing the dopant in the trench dopant containing layer into the semiconductor substrate; and removing the trench dopant containing layer.Type: GrantFiled: September 9, 2011Date of Patent: January 14, 2014Assignee: Electronics & Telecommunications Research InstituteInventors: Sang Gi Kim, Jin-Gun Koo, Seong Wook Yoo, Jong-Moon Park, Jin Ho Lee, Kyoung Il Na, Yil Suk Yang, Jongdae Kim