Patents by Inventor Jeong Nam LEE
Jeong Nam LEE 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: 11973584Abstract: This application relates to a noise signal generating apparatus. In one aspect, the apparatus includes a bandwidth expansion unit configured to generate a noise signal having a second bandwidth by expanding a noise source signal having a first bandwidth to the second bandwidth that is greater than the first bandwidth. The apparatus may also include a randomization unit configured to perform randomization and output the generated noise signal having the second bandwidth.Type: GrantFiled: July 15, 2021Date of Patent: April 30, 2024Assignee: Agency for Defense DevelopmentInventors: Jaewon Chang, Jeong Ho Ryu, Joo Rae Park, Young Ju Park, Byeong Nam Lee
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Publication number: 20240097125Abstract: A cathode for a lithium secondary battery includes a cathode current collector, and a cathode active material layer formed on the cathode current collector. The cathode active material layer includes cathode active material particles. The cathode active material particles include a lithium metal oxide particle containing nickel and having a mole fraction of cobalt of 0.02 or less among all elements except lithium and oxygen.Type: ApplicationFiled: July 11, 2023Publication date: March 21, 2024Inventors: Yong Seok LEE, Jeong Hoon JEUN, Jae Ram KIM, Jae Yun MIN, Ki Joo EOM, Myung Ro LEE, Hyun Joong JANG, Je Nam CHOI
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Patent number: 9845104Abstract: Disclosed herein is an apparatus for tilting a steering column, capable of smoothly guiding tooth-on-tooth between a moving gear moved along with a tilt shaft when an operating lever is operated such that a steering column tilts up and down, and a fixing gear fixed to a vehicle body. Consequently, it is possible to resolve faulty operation and prevent the emotional quality of product from deteriorating.Type: GrantFiled: February 10, 2015Date of Patent: December 19, 2017Assignee: NAMYANG IND. CO., LTDInventors: Sung Jong Hong, Jeong Nam Lee
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Publication number: 20170008545Abstract: Disclosed herein is an apparatus for tilting a steering column, capable of smoothly guiding tooth-on-tooth between a moving gear moved along with a tilt shaft when an operating lever is operated such that a steering column tilts up and down, and a fixing gear fixed to a vehicle body. Consequently, it is possible to resolve faulty operation and prevent the emotional quality of product from deteriorating.Type: ApplicationFiled: February 10, 2015Publication date: January 12, 2017Applicant: NAMYANG IND. CO., LTDInventors: Sung Jong HONG, Jeong Nam LEE
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Patent number: 9431899Abstract: A power supply device may include: a standby power unit converting a direct current (DC) voltage to an operating voltage and a first standby voltage and providing the first standby voltage to a standby output terminal; a DC/DC converting unit receiving the operating voltage from the standby power unit, converting the DC voltage to a main voltage, and providing the main voltage to a main output terminal; and a main/standby power unit converting the main voltage from the DC/DC converting unit to a second standby voltage and providing the second standby voltage to the standby output terminal. The standby power unit varies a magnitude of the first standby voltage based on whether or not the second standby voltage is supplied to the standby output terminal.Type: GrantFiled: June 11, 2014Date of Patent: August 30, 2016Assignees: SAMSUNG ELECTRO-MECHANICS CO., LTD., SOLUM CO., LTD.Inventors: Jeong Nam Lee, Chong Eun Kim
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Patent number: 9417644Abstract: There are provided an apparatus for and a method of controlling a power supply system. The apparatus for controlling a power supply system includes an offset correction circuit equally dividing an input voltage into n (n is a natural number larger than 2) and outputting n divided voltages, and a control unit using an analog-to-digital converter (ADC) to detect the n divided voltages output from the offset correction circuit, and determining a difference in levels between a value of the detected n divided voltages and a value calculated by dividing the input voltage by n, as an offset correction value.Type: GrantFiled: July 12, 2013Date of Patent: August 16, 2016Assignees: SAMSUNG ELECTRO-MECHANICS CO., LTD, SOLUM CO., LTDInventors: Chong Eun Kim, Jeong Nam Lee
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Patent number: 9344000Abstract: There are provided a power module in which a bias voltage is varied and supplied to a control circuit controlling power conversion when an idle mode is switched to a normal mode, and a distributed power supply apparatus having the same. The power module includes: a power factor correction stage; a DC/DC conversion stage switching power to convert the power into pre-set DC power in a powering mode in which normal power is output; a standby stage converting the power into pre-set standby power in a cold standby mode in which the DC/DC conversion stage outputs power having a level lower than that of normal power; and a variable bias supply unit varying a voltage level of bias power for controlling DC/DC power conversion and supplying the same to the DC/DC conversion stage in the cold standby mode and the powering mode.Type: GrantFiled: March 15, 2013Date of Patent: May 17, 2016Assignees: SAMSUNG ELECTRO-MECHANICS CO., LTD., KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGYInventors: Chong Eun Kim, Jeong Nam Lee, Duk You Kim, Gun Woo Moon, Don Sik Kim
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Patent number: 9263953Abstract: Embodiments of the invention provide a power supply apparatus, including an AC/DC rectifying unit converting an AC voltage into a DC voltage, a power factor correction unit correcting a power factor of the DC voltage, and a DC/DC conversion unit converting the DC voltage having the corrected power factor into a DC voltage having a different magnitude therefrom. According to various embodiments, the power supply apparatus further includes an auxiliary winding connected to a primary side winding of a transformer of the DC/DC conversion unit and generating the DC voltage having a predetermined magnitude, and an internal power generation unit connected to an output terminal of the power factor correction unit and the auxiliary winding and using a voltage of the output terminal of the power factor correction unit and a voltage generated by the auxiliary winding to generate temporary Vcc power and supply the generated temporary Vcc power as internal power of the power factor correction unit.Type: GrantFiled: October 1, 2014Date of Patent: February 16, 2016Assignee: SAMSUNG ELECTRO-MECHANICS CO., LTD.Inventors: Jeong Nam Lee, Yeon Ho Jeong
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Patent number: 9112424Abstract: There is provided a phase shift full bridge (PSFB) type power supply device controlling a switching on time of lagging leg switches according to a load state. The power supply device includes a power supply unit supplying preset DC power by switching input power using a full bridge by a phase shift method; and a control unit controlling a switching time of a switch of the full bridge according to a load state in which the DC power is received from the power supply unit.Type: GrantFiled: June 11, 2013Date of Patent: August 18, 2015Assignees: SAMSUNG ELECTRO-MECHANICS CO., LTD., Korea Advanced Institute of Science and TechnologyInventors: Chong Eun Kim, Jeong Nam Lee, Duk You Kim, Gun Woo Moon, Don Sik Kim
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Publication number: 20150117061Abstract: A power supply apparatus may include: a power supplying unit switching input power and supplying driving power; and a controlling unit controlling supplying of power by the power supplying unit by fixing a power switching phase and duty to a preset value and varying a switching frequency thereof in a case in which a load state of the power supplying unit is equal to a preset load state or above, and by varying the power switching phase and the switching frequency of the power supplying unit in a case in which the load state of the power supplying unit is a preset load state or less.Type: ApplicationFiled: June 19, 2014Publication date: April 30, 2015Inventors: Chong Eun KIM, Jeong Nam LEE
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Publication number: 20150092463Abstract: Embodiments of the invention provide a power supply apparatus, including an AC/DC rectifying unit converting an AC voltage into a DC voltage, a power factor correction unit correcting a power factor of the DC voltage, and a DC/DC conversion unit converting the DC voltage having the corrected power factor into a DC voltage having a different magnitude therefrom. According to various embodiments, the power supply apparatus further includes an auxiliary winding connected to a primary side winding of a transformer of the DC/DC conversion unit and generating the DC voltage having a predetermined magnitude, and an internal power generation unit connected to an output terminal of the power factor correction unit and the auxiliary winding and using a voltage of the output terminal of the power factor correction unit and a voltage generated by the auxiliary winding to generate temporary Vcc power and supply the generated temporary Vcc power as internal power of the power factor correction unit.Type: ApplicationFiled: October 1, 2014Publication date: April 2, 2015Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.Inventors: Jeong Nam LEE, Yeon Ho JEONG
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Publication number: 20140368179Abstract: A power supply device may include: a standby power unit converting a direct current (DC) voltage to an operating voltage and a first standby voltage and providing the first standby voltage to a standby output terminal; a DC/DC converting unit receiving the operating voltage from the standby power unit, converting the DC voltage to a main voltage, and providing the main voltage to a main output terminal; and a main/standby power unit converting the main voltage from the DC/DC converting unit to a second standby voltage and providing the second standby voltage to the standby output terminal. The standby power unit varies a magnitude of the first standby voltage based on whether or not the second standby voltage is supplied to the standby output terminal.Type: ApplicationFiled: June 11, 2014Publication date: December 18, 2014Inventors: Jeong Nam LEE, Chong Eun Kim
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Publication number: 20140184178Abstract: There are provided an apparatus for and a method of controlling a power supply system. The apparatus for controlling a power supply system includes an offset correction circuit equally dividing an input voltage into n (n is a natural number larger than 2) and outputting n divided voltages, and a control unit using an analog-to-digital converter (ADC) to detect the n divided voltages output from the offset correction circuit, and determining a difference in levels between a value of the detected n divided voltages and a value calculated by dividing the input voltage by n, as an offset correction value.Type: ApplicationFiled: July 12, 2013Publication date: July 3, 2014Inventors: Chong Eun KIM, Jeong Nam LEE
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Publication number: 20140177282Abstract: There is provided a phase shift full bridge (PSFB) type power supply device controlling a switching on time of lagging leg switches according to a load state. The power supply device includes a power supply unit supplying preset DC power by switching input power using a full bridge by a phase shift method; and a control unit controlling a switching time of a switch of the full bridge according to a load state in which the DC power is received from the power supply unit.Type: ApplicationFiled: June 11, 2013Publication date: June 26, 2014Applicants: Korea Advanced Institute of Science and Technology, Samsung Electro-Mechanics Co., Ltd.Inventors: Chong Eun KIM, Jeong Nam LEE, Duk You KIM, Gun Woo MOON, Don Sik KIM
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Publication number: 20140177301Abstract: There are provided a power module in which a bias voltage is varied and supplied to a control circuit controlling power conversion when an idle mode is switched to a normal mode, and a distributed power supply apparatus having the same. The power module includes: a power factor correction stage; a DC/DC conversion stage switching power to convert the power into pre-set DC power in a powering mode in which normal power is output; a standby stage converting the power into pre-set standby power in a cold standby mode in which the DC/DC conversion stage outputs power having a level lower than that of normal power; and a variable bias supply unit varying a voltage level of bias power for controlling DC/DC power conversion and supplying the same to the DC/DC conversion stage in the cold standby mode and the powering mode.Type: ApplicationFiled: March 15, 2013Publication date: June 26, 2014Inventors: Chong Eun KIM, Jeong Nam LEE, Duk You KIM, Gun Woo MOON, Don Sik KIM