Patents by Inventor Jeonghoon Yoo
Jeonghoon Yoo 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: 9854720Abstract: Disclosed herein is an electromagnetic wave shielding dielectric film. The electromagnetic wave shielding dielectric film includes a lower layer and an upper layer. The lower layer is formed of a dielectric in a plate shape. The upper layer is formed of a dielectric stacked on the lower layer, and is configured to form a periodic pattern of protrusion and depression structures.Type: GrantFiled: April 22, 2016Date of Patent: December 26, 2017Assignee: Industry-Academic Cooperation Foundation, Yonsei UniversityInventors: Jeonghoon Yoo, Hyundo Shin, Kyoungsik Kim
-
Patent number: 9570936Abstract: A wired/wireless charging apparatus capable of performing wired charging and wireless charging and a circuit are provided. The wired/wireless charging apparatus includes a body including a wired charging circuit for wired charging, a wireless charging circuit for wireless charging, and a battery mounting space a cover coupled with the body and including a transmission coil generating a magnetic field for the wireless charging, wherein the body and the cover including a contact unit for electrically connecting the transmission coil to the wireless charging circuit.Type: GrantFiled: April 18, 2013Date of Patent: February 14, 2017Assignee: Samsung Electronics Co., Ltd.Inventor: Jeonghoon Yoo
-
Publication number: 20160324041Abstract: Disclosed herein is an electromagnetic wave shielding dielectric film. The electromagnetic wave shielding dielectric film includes a lower layer and an upper layer. The lower layer is formed of a dielectric in a plate shape. The upper layer is formed of a dielectric stacked on the lower layer, and is configured to form a periodic pattern of protrusion and depression structures.Type: ApplicationFiled: April 22, 2016Publication date: November 3, 2016Inventors: Jeonghoon YOO, Hyundo SHIN, Kyoungsik KIM
-
Patent number: 9373443Abstract: An electromagnetic coil system for driving control of a micro-robot includes pairs of X-axis and Y-axis Helmholtz coils whose winding central axes are placed on an X axis and Y axis respectively, a position recognition system that detects a position and direction of the micro-robot in a workspace, a controller that controls an amount of supply of electric currents flowing to the X-axis or Y-axis Helmholtz coils in order to control movement of the micro-robot based on information about the movement of the micro-robot and previously input information about a path of the micro-robot, and a current amplifier that supplies the electric currents to the respective Helmholtz coils. The pairs of X-axis and Y-axis Helmholtz coils are disposed so as to face each other, and the X-axis Helmholtz coils and the Y-axis Helmholtz coils are vertically crossed and installed so as to form the workspace of the micro-robot.Type: GrantFiled: November 18, 2013Date of Patent: June 21, 2016Assignee: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGYInventors: Seung-Jong Kim, Jin Soo Kim, Jeonghoon Yoo
-
Publication number: 20140333143Abstract: An electromagnetic coil system for driving control of a micro-robot includes pairs of X-axis and Y-axis Helmholtz coils whose winding central axes are placed on an X axis and Y axis respectively, a position recognition system that detects a position and direction of the micro-robot in a workspace, a controller that controls an amount of supply of electric currents flowing to the X-axis or Y-axis Helmholtz coils in order to control movement of the micro-robot based on information about the movement of the micro-robot and previously input information about a path of the micro-robot, and a current amplifier that supplies the electric currents to the respective Helmholtz coils. The pairs of X-axis and Y-axis Helmholtz coils are disposed so as to face each other, and the X-axis Helmholtz coils and the Y-axis Helmholtz coils are vertically crossed and installed so as to form the workspace of the micro-robot.Type: ApplicationFiled: November 18, 2013Publication date: November 13, 2014Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGYInventors: Seung-Jong KIM, Jin Soo KIM, Jeonghoon YOO
-
Publication number: 20130278207Abstract: A wired/wireless charging apparatus capable of performing wired charging and wireless charging and a circuit are provided. The wired/wireless charging apparatus includes a body including a wired charging circuit for wired charging, a wireless charging circuit for wireless charging, and a battery mounting space a cover coupled with the body and including a transmission coil generating a magnetic field for the wireless charging, wherein the body and the cover including a contact unit for electrically connecting the transmission coil to the wireless charging circuit.Type: ApplicationFiled: April 18, 2013Publication date: October 24, 2013Applicant: Samsung Electronics Co. Ltd.Inventor: Jeonghoon YOO
-
Patent number: 7965006Abstract: A device for generating and varying stiffness, which may be applied to a joint of a robot manipulator, the stiffness generating device having a rotating shaft connected to a driven member; a rotor fixed to the rotating shaft and having arms comprising a magnetic element; a stator disposed to surround the rotor outside the arms and being connected to a drive motor; electromagnets fixed to an inner periphery of the stator and being opposed to each other about the rotating shaft, each having a core and a coil wound around the core; and means for applying current to the coils. One half of the electromagnets has N-poles at their inward ends and the other half of the electromagnets has S-poles at their inward ends. Current regulating means regulates the current being applied to the coils.Type: GrantFiled: December 7, 2006Date of Patent: June 21, 2011Assignee: Korea Institute of Science and TechnologyInventors: Sung Chul Kang, Munsang Kim, Seung Jong Kim, Seung Kook Yun, Jeonghoon Yoo
-
Publication number: 20100192719Abstract: The present invention provides a device for generating and varying stiffness, which may be applied to a joint of a robot manipulator. The stiffness generating device of the present invention, comprises: a rotating shaft connected to a driven member; a rotor fixed to the rotating shaft and having arms comprising a magnetic element; a stator disposed to surround the rotor outside the arms and being connected to a drive motor; electromagnets fixed to an inner periphery of the stator and being opposed to each other about the rotating shaft, each having a core and a coil wound around the core; and means for applying current to the coils. One half of the electromagnets has N-poles at their inward ends and the other half of the electromagnets has S-poles at their inward ends. Current regulating means regulates the current being applied to the coils.Type: ApplicationFiled: December 7, 2006Publication date: August 5, 2010Inventors: Sung Chul Kang, Munsang Kim, Seung Jong Kim, Seung Kook Yun, Jeonghoon Yoo
-
Patent number: 7616532Abstract: A small-sized optical disc drive includes one voice coil motor magnet within which a tracking coil and two focusing coils are disposed such that the tracking coil straddles the two poles of permanent magnets that are adjacently disposed. The two focusing coils are disposed on either side of the tracking coil, with each of the two focusing coils being only disposed over one of the permanent magnets.Type: GrantFiled: September 29, 2006Date of Patent: November 10, 2009Assignee: Hitachi, Ltd.Inventors: Shigeo Nakamura, Takeshi Shimano, Masaya Horino, Irizo Naniwa, No-Cheol Park, Jeonghoon Yoo, Dong-Ju Lee, Jeseung Oh, Chul Park
-
Publication number: 20070223325Abstract: There is provided a compact optical disc apparatus having a small footprint actuator. A tracking coil of a swing arm-type actuator is disposed substantially perpendicular to an arm and on the opposite side to an optical disc loading slot with respect to the line connecting the center of rotation of the optical disc to the center of swing movement of the actuator. A pair of permanent magnets are disposed such that they face the tracking coil and they are opposite in polarity. The tracking coil is disposed on both the permanent magnets such that the tracking coil straddles the boundary of the pair of permanent magnets.Type: ApplicationFiled: January 26, 2007Publication date: September 27, 2007Inventors: Shigeo Nakamura, Takeshi Shimano, Irizo Naniwa, No-Cheol Park, Jeonghoon Yoo, Hyun Seok Yang, Dong-Ju Lee, Heoksoo Hong
-
Publication number: 20070121436Abstract: A small-sized optical disc drive includes one voice coil motor magnet within which a tracking coil and two focusing coils are disposed such that the tracking coil straddles the two poles of permanent magnets that are adjacently disposed. The two focusing coils are disposed on either side of the tracking coil, with each of the two focusing coils being only disposed over one of the permanent magnets.Type: ApplicationFiled: September 29, 2006Publication date: May 31, 2007Inventors: Shigeo Nakamura, Takeshi Shimano, Masaya Horino, Irizo Naniwa, No-Cheol Park, Jeonghoon Yoo, Dong-Ju Lee, Jeseung Oh, Chul Park