Patents by Inventor Dong-Ho Han

Dong-Ho Han 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).

  • Publication number: 20190103366
    Abstract: Electronic device packages utilizing a stiffener coupled to a substrate with a magnetic lossy bonding layer to attenuate or absorb electromagnetic signals such as radio frequency interference (RFI) along with related systems and method are disclosed.
    Type: Application
    Filed: September 29, 2017
    Publication date: April 4, 2019
    Applicant: Intel Corporation
    Inventors: Jaejin Lee, Hao-Han Hsu, Chung-Hao J. Chen, Dong-Ho Han
  • Publication number: 20190097313
    Abstract: Embodiments include apparatuses, methods, and systems including an electronic apparatus including an inductor within a circuit package affixed to a printed circuit board (PCB) having a ground layer, where the ground layer includes a mesh area that is substantially void along a contour of the inductor. An electronic apparatus may include a circuit package with an inductor, and a PCB, where the circuit package may be affixed to the PCB. The PCB may have a plurality of layers including a ground layer and a power layer, where the ground layer may be between the power layer and the inductor. The ground layer may include a mesh area that may be substantially void along a contour of the inductor within the circuit package. Other embodiments may also be described and claimed.
    Type: Application
    Filed: September 22, 2017
    Publication date: March 28, 2019
    Inventors: JaeJin Lee, Dong-Ho Han, Hao-Han Hsu
  • Publication number: 20190044289
    Abstract: A shielded SODIMM system for reducing RF emissions of a SODIMM connector is disclosed herein. SODIMM connector RFI presently interferes with connectivity and is also an obstacle for higher speed memory applications. The shielded SODIMM system includes a SODIMM connector that is at least partially housed by a SODIMM connector shield, to partially and/or substantially reduce or block RF emissions from the SODIMM connector. The SODIMM connector shield is at least partially conductive and is coupled to landing pads on a surface of a motherboard printed circuit board (“PCB”). The landing pads of the motherboard PCB that are coupled to the SODIMM connector shield are coupled to ground, which grounds the SODIMM connector shield. Grounding the SODIMM connector shield that at least partially houses the SODIMM connector reduces RF emissions from the SODIMM connector during information transfer operations.
    Type: Application
    Filed: February 20, 2018
    Publication date: February 7, 2019
    Applicant: Intel Corporation
    Inventors: XIANG LI, JAEJIN LEE, JUN LIAO, HAO-HAN HSU, GEORGE VERGIS, YUN LING, DONG-HO HAN, YUNHUI CHU
  • Publication number: 20190037683
    Abstract: Embodiments herein disclose techniques for electronic apparatuses including a printed circuit board (PCB) and an electromagnetic interference (EMI) shield for the PCB. An electronic apparatus may include a PCB with a plurality of layers including a ground layer. The PCB may include a cutout through the plurality of layers of the PCB. An EMI shield may be mounted to a bottom side of the PCB along an edge of the cutout, where the EMI shield may be coupled to the ground layer through an ohmic contact. The EMI shield may be flat. Other embodiments may also be described and claimed.
    Type: Application
    Filed: July 26, 2017
    Publication date: January 31, 2019
    Inventors: Dong-Ho Han, Timothy Swettlen
  • Patent number: 9705182
    Abstract: A patch-based proximity sensor having a capacitance and/or inductance that varies based on a proximity of an animate body, a sense circuit to sense the capacitance and/or inductance, and a control system to compare one or more sensed values to one or more thresholds, and to selectively enable/disable one or more antennas based on the comparison(s). The threshold may correspond to a desired/permitted minimum distance between an antenna and an animate body, and/or a desired/permitted maximum electromagnetic energy exposure to the animate body. A multi-layer module may include one or more patch-based proximity sensors and one or more patch-antennas. Multiple antennas may be individually controllable based on corresponding proximity measures.
    Type: Grant
    Filed: June 29, 2012
    Date of Patent: July 11, 2017
    Assignee: INTEL CORPORATION
    Inventors: Hao-Han Hsu, Songnan Yang, Dong-Ho Han, Chung-Hao J. Chen
  • Patent number: 9544991
    Abstract: Multi-pair differential lines printed circuit board common mode filters are generally described. In one embodiment, the apparatus includes a multi-layer printed circuit board, a first signal line and a second signal line forming a first differential pair on a first layer of the printed circuit board, a second differential pair on the first layer of the printed circuit board, and a common mode filter on a second layer of the printed circuit board, the common mode filter comprising an absence of a predominantly occurring dielectric material of the printed circuit board, the common mode filter spanning an area directly below at least a portion of both the first and the second differential pairs. Other embodiments are also described and claimed.
    Type: Grant
    Filed: December 19, 2011
    Date of Patent: January 10, 2017
    Assignee: Intel Corporation
    Inventors: Chung-Hao J. Chen, Dong-Ho Han, Mike Schaffer
  • Publication number: 20160304328
    Abstract: The present disclosure relates to a forklift. The forklift according to the present disclosure is controlled such that when a traveling speed reaches or becomes higher than a predetermined traveling speed, a flow rate of hydraulic oil to be provided to a steering unit is reduced. Therefore, in order to implement a desired direction change, a steering wheel needs to be rotated to a relatively larger degree than when the forklift travels at a low speed. That is, straight traveling performance may be improved by reducing sensitivity of a direction change of the forklift to an operation of the steering wheel.
    Type: Application
    Filed: October 16, 2014
    Publication date: October 20, 2016
    Applicant: DOOSAN CORPORATION
    Inventor: Dong Ho Han
  • Publication number: 20160297657
    Abstract: The present disclosure relates to a forklift. The forklift according to the present disclosure is controlled such that when a traveling speed reaches or becomes higher than a predetermined traveling speed, pressure of hydraulic oil to be provided to a steering unit is reduced. Therefore, in order to implement a desired direction change, a steering wheel needs to be rotated to a relatively larger degree than when the forklift travels at a low speed. That is, straight traveling performance may be improved by reducing sensitivity of a direction change of the forklift to an operation of the steering wheel.
    Type: Application
    Filed: October 16, 2014
    Publication date: October 13, 2016
    Applicant: DOOSAN CORPORATION
    Inventor: Dong Ho Han
  • Patent number: 9251984
    Abstract: Methods and systems may provide for a hybrid RF MEMS component design including an electrostatic actuation and a piezoelectric actuation. In one example, the method may include applying a first voltage to generate a first piezoelectric force to reduce a first gap between a cantilever and an actuation electrode, and applying a second voltage to generate an electrostatic force to create contact between the cantilever and a transmission electrode.
    Type: Grant
    Filed: December 27, 2012
    Date of Patent: February 2, 2016
    Assignee: Intel Corporation
    Inventors: Hao-Han Hsu, Rashed Mahameed, Mohamed A. Abdelmoneum, Dong-Ho Han
  • Patent number: 9079755
    Abstract: The present disclosure relates to an energy reclaiming system for an electric forklift truck. The energy reclaiming system includes an electronic device operated by a motor when a working machine is raised and operated by a generator when the working machine is lowered, a hydraulic pump/motor connected to the electronic device and configured to perform two functions of a hydraulic pump and a hydraulic motor, a main control valve unit including a lift cylinder operating unit connected to the hydraulic pump/motor and configured to operate a lift cylinder and a secondary consumer operating unit connected to the hydraulic pump/motor and configured to operate a secondary consumer, and a control lever including a control valve configured to control the lift cylinder or the secondary consumer through the lift cylinder operating unit and the secondary consumer operating unit of the main control valve unit, respectively.
    Type: Grant
    Filed: May 19, 2011
    Date of Patent: July 14, 2015
    Assignee: Doosan Corporation
    Inventors: Dong Ho Han, Dal Sik Jang
  • Patent number: 8907859
    Abstract: Described herein are techniques related to near field coupling and wireless power transfers. A mobile device may include an edge-emitting antenna that offers ultra slim, all-metallic chassis packaging option with no cutout, uses lesser area, has robust mechanical strength, and provides EMI/ESD protection. In one example, an inductor coil is wrapped around a magnetic core and a pair of conductive layers is configured to interpose the magnetic core and the inductor coil between them to expose an edge of the magnetic core. The inductor coil being operable in a transmit mode to generate a magnetic field in response to a current passing through it. The edge is configured to enhance outward radiation of the magnetic field. Based on simulation results, the edge-emitting antenna occupies less space and provides an acceptable level of performance for coupling coefficients compared to conventional antenna.
    Type: Grant
    Filed: June 19, 2012
    Date of Patent: December 9, 2014
    Assignee: Intel Corporation
    Inventors: Hao-Han Hsu, Dong-Ho Han, Songnan Yang, Anand S Konanur, Chung-Hao Joseph Chen
  • Publication number: 20140184028
    Abstract: Methods and systems may provide for a hybrid RF MEMS component design including an electrostatic actuation and a piezoelectric actuation. In one example, the method may include applying a first voltage to generate a first piezoelectric force to reduce a first gap between a cantilever and an actuation electrode, and applying a second voltage to generate an electrostatic force to create contact between the cantilever and a transmission electrode.
    Type: Application
    Filed: December 27, 2012
    Publication date: July 3, 2014
    Inventors: Hao-Han Hsu, Rashed Mahameed, Mohamed A. Abdelmoneum, Dong-Ho Han
  • Publication number: 20140153656
    Abstract: Methods and systems may provide for generating a data signal based on a local clock signal and converting the local clock signal into a pseudorandom binary sequence (PRBS) signal. The data signal and the PRBS signal may be transferred from a transmitter to a receiver via a channel, wherein a recovered clock signal may be generated at the receiver based on the PRBS signal. Additionally, the data signal may be processed based on the recovered clock signal. In one example, the PRBS signal has a number of timing edges that is randomized and less than a number of timing edges in the local clock signal per period of time.
    Type: Application
    Filed: November 30, 2012
    Publication date: June 5, 2014
    Inventors: Hao-Han Hsu, Dong-Ho Han, Chung-Hao J. Chen
  • Publication number: 20140002305
    Abstract: A patch-based proximity sensor having a capacitance and/or inductance that varies based on a proximity of an animate body, a sense circuit to sense the capacitance and/or inductance, and a control system to compare one or more sensed values to one or more thresholds, and to selectively enable/disable one or more antennas based on the comparison(s). The threshold may correspond to a desired/permitted minimum distance between an antenna and an animate body, and/or a desired/permitted maximum electromagnetic energy exposure to the animate body. A multi-layer module may include one or more patch-based proximity sensors and one or more patch-antennas. Multiple antennas may be individually controllable based on corresponding proximity measures.
    Type: Application
    Filed: June 29, 2012
    Publication date: January 2, 2014
    Inventors: Hao-Han Hsu, Songnan Yang, Dong-Ho Han, Chung-Hao J. Chen
  • Publication number: 20130335284
    Abstract: Described herein are techniques related to near field coupling and wireless power transfers. A mobile device may include an edge-emitting antenna that offers ultra slim, all-metallic chassis packaging option with no cutout, uses lesser area, has robust mechanical strength, and provides EMI/ESD protection. In one example, an inductor coil is wrapped around a magnetic core and a pair of conductive layers is configured to interpose the magnetic core and the inductor coil between them to expose an edge of the magnetic core. The inductor coil being operable in a transmit mode to generate a magnetic field in response to a current passing through it. The edge is configured to enhance outward radiation of the magnetic field. Based on simulation results, the edge-emitting antenna occupies less space and provides an acceptable level of performance for coupling coefficients compared to conventional antenna.
    Type: Application
    Filed: June 19, 2012
    Publication date: December 19, 2013
    Inventors: Hao-Han Hsu, Dong-Ho Han, Songnan Yang, Anand S. Konanur, Chung-Hao Joseph Chen
  • Publication number: 20130271909
    Abstract: Multi-pair differential lines printed circuit board common mode filters are generally described. In one embodiment, the apparatus includes a multi-layer printed circuit board, a first signal line and a second signal line forming a first differential pair on a first layer of the printed circuit board, a second differential pair on the first layer of the printed circuit board, and a common mode filter on a second layer of the printed circuit board, the common mode filter comprising an absence of a predominantly occurring dielectric material of the printed circuit board, the common mode filter spanning an area directly below at least a portion of both the first and the second differential pairs. Other embodiments are also described and claimed.
    Type: Application
    Filed: December 19, 2011
    Publication date: October 17, 2013
    Inventors: Chung-Hao J. Chen, Dong-Ho Han, Mike Schaffer
  • Publication number: 20130145751
    Abstract: The present disclosure relates to an energy reclaiming system for an electric forklift truck. The energy reclaiming system includes an electronic device operated by a motor when a working machine is raised and operated by a generator when the working machine is lowered, a hydraulic pump/motor connected to the electronic device and configured to perform two functions of a hydraulic pump and a hydraulic motor, a main control valve unit including a lift cylinder operating unit connected to the hydraulic pump/motor and configured to operate a lift cylinder and a secondary consumer operating unit connected to the hydraulic pump/motor and configured to operate a secondary consumer, and a control lever including a control valve configured to control the lift cylinder or the secondary consumer through the lift cylinder operating unit and the secondary consumer operating unit of the main control valve unit, respectively.
    Type: Application
    Filed: May 19, 2011
    Publication date: June 13, 2013
    Applicant: DOOSAN INDUSTRIAL VEHICLE CO., LTD
    Inventors: Dong Ho Han, Dal Sik Jang
  • Patent number: 7611924
    Abstract: Embodiments of the present invention include an apparatus, method, and/or system for an integrated circuit package with signal connections on the chip-side of the package structure.
    Type: Grant
    Filed: January 17, 2008
    Date of Patent: November 3, 2009
    Assignee: Intel Corporation
    Inventors: Joong-Ho Kim, Dong-Ho Han, Hyunjun Kim, Jiangqi He
  • Patent number: 7432779
    Abstract: Transmission line impedance matching for matching an impedance discontinuity on a transmission signal trace with one or more non-transmission traces disposed near the transmission signal trace at a region corresponding to the impedance discontinuity.
    Type: Grant
    Filed: February 22, 2007
    Date of Patent: October 7, 2008
    Assignee: Intel Corporation
    Inventors: Hyunjun Kim, Joong-Ho Kim, Dong-Ho Han, Jiangqi He
  • Patent number: D801418
    Type: Grant
    Filed: May 10, 2016
    Date of Patent: October 31, 2017
    Assignee: 3OPTICS CO., LTD.
    Inventors: Kil Woo Park, Dong Ho Han, Dong Myung Ham, Jong Hee Kim