Patents by Inventor Myung-hwan Lee

Myung-hwan 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).

  • Publication number: 20140288888
    Abstract: A screen generation method of an energy management system according to the present disclosure may include performing system visualization modeling indicating a connection relationship between monitoring facilities in a power system to generate a first screen; generating a file containing information on a connection relationship between facilities used during the first screen generation; and generating a second screen for monitoring facilities during the real-time operation using the generated file.
    Type: Application
    Filed: September 17, 2013
    Publication date: September 25, 2014
    Applicant: LSIS CO., LTD.
    Inventors: Yeo Chang YOON, Yong Hark SHIN, Jong Ho PARK, Myung Hwan LEE, Seung Ju LEE
  • Patent number: 8767489
    Abstract: A semiconductor memory device includes a transmission line configured to transmit a fuse enable signal for performance of a repair operation; a first repair enable signal generation unit configured to receive the fuse enable signal through the transmission line and generate a first repair enable signal for performing a repair operation for a first bank; and a second repair enable signal generation unit configured to receive the fuse enable signal through the transmission line and generate a second repair enable signal for performing a repair operation for a second bank.
    Type: Grant
    Filed: March 6, 2012
    Date of Patent: July 1, 2014
    Assignee: SK Hynix Inc.
    Inventors: Myung Hwan Lee, Shin Ho Chu
  • Publication number: 20140160045
    Abstract: A terminal and a method of providing a user interface using a pen are provided. The terminal includes a pen attachment/detachment perception switch configured to detect attachment and detachment of a pen; a touch screen panel configured to detect a state of the pen; and a controller configured to activate a terminal screen when a signal corresponding to the detachment of the pen from the pen attachment/detachment perception switch has been received, and to display a menu item list, including one or more applications, on the terminal screen when a hovering event by the pen has been detected by the touch screen panel.
    Type: Application
    Filed: November 22, 2013
    Publication date: June 12, 2014
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Hong-Joon Park, Myung-Hwan Lee, Jin Park
  • Patent number: 8749270
    Abstract: A driver circuit of a semiconductor apparatus includes a driver and a control unit configured to vary a voltage level of a power supply terminal of the driver in response to a standby mode signal.
    Type: Grant
    Filed: December 21, 2011
    Date of Patent: June 10, 2014
    Assignee: SK Hynix Inc.
    Inventors: Myung Hwan Lee, Shin Ho Chu
  • Publication number: 20140145766
    Abstract: An initialization circuit includes an initialization control unit configured to generate a start pulse, which is generated after a power supply voltage reaches a target voltage level, in response to the power supply voltage and an external command, and an initialization execution unit configured to extract a fuse signal from a programmed fuse in response to the start pulse, and to output stored data when an external address corresponding to the fuse signal is inputted.
    Type: Application
    Filed: March 18, 2013
    Publication date: May 29, 2014
    Applicant: SK HYNIX INC.
    Inventors: Myung Hwan LEE, Yun Seok HONG
  • Patent number: 8698524
    Abstract: Internal voltage generation circuits are provided. The internal voltage generation circuit includes a driving signal generator comparing first and second internal voltage signals with lower and upper limit reference voltage signals to generate a pull-up driving signal and a pull-down driving signal, a driver generating a first voltage and a second voltage in response to the pull-up driving signal and the pull-down driving signal, a selecting signal generator comparing the first internal voltage signal with the second internal voltage signal to generate a selection signal, and a selection transmitter that transmits any one of the first and second voltages to the first or second internal voltage signal in response to the selection signal.
    Type: Grant
    Filed: August 21, 2012
    Date of Patent: April 15, 2014
    Assignee: SK Hynix Inc.
    Inventor: Myung Hwan Lee
  • Publication number: 20140009421
    Abstract: An apparatus and a method for releasing a lock function set in advance by detecting a user's input in an electronic device increases the security level required to access the electronic device. A method for controlling the lock function in the electronic device includes determining pattern input information. After determining the pattern input information is valid by analysis with predetermined pattern information, the lock function is released. The pattern input information includes at least one of a pattern shape, a pattern input time, a pattern input position, and a pen pressure of a pattern. The apparatus includes a touchscreen configured for detecting gestures, use of a stylus within a pre-determined threshold, and touch. The device discerns whether input has been entered in a proper hidden region of the display, to reduce unauthorized access by someone observing the input pattern being entered.
    Type: Application
    Filed: July 8, 2013
    Publication date: January 9, 2014
    Inventors: Myung-Hwan LEE, Sun-Young MIM, Jin PARK, Hong-Joon PARK
  • Publication number: 20130307592
    Abstract: Internal voltage generation circuits are provided. The internal voltage generation circuit includes a driving signal generator comparing first and second internal voltage signals with lower and upper limit reference voltage signals to generate a pull-up driving signal and a pull-down driving signal, a driver generating a first voltage and a second voltage in response to the pull-up driving signal and the pull-down driving signal, a selecting signal generator comparing the first internal voltage signal with the second internal voltage signal to generate a selection signal, and a selection transmitter that transmits any one of the first and second voltages to the first or second internal voltage signal in response to the selection signal.
    Type: Application
    Filed: August 21, 2012
    Publication date: November 21, 2013
    Applicant: SK HYNIX INC.
    Inventor: Myung Hwan LEE
  • Patent number: 8415934
    Abstract: The present invention relates to an automatic voltage regulator, and more specifically, to an automatic voltage regulator capable of precisely controlling the output voltage level by using a toroidal autotransformer. The present invention has precise voltage control to enable the output of the voltage level desired by the user, and precisely carries out a variety of applications of power saving and voltage booster. In particular, the present invention can boost/reduce the input voltage to provide a desired target voltage within an error range of 1 volt or less. The present invention also comprises a simple relay switching circuit and excludes semiconductor switching devices, thereby being capable of operating adaptively in different system environments without an additional modification.
    Type: Grant
    Filed: April 7, 2009
    Date of Patent: April 9, 2013
    Assignees: CSKK (HKG) Limited
    Inventor: Myung Hwan Lee
  • Publication number: 20130030117
    Abstract: The present invention provides a method of manufacturing polyamide-carbon nanotube composites. The method includes mixing a polyamide composition including 0.01-1% by weight of carbon nanotubes using a shearing rate equal to or greater than 1000-4400 sec?1.
    Type: Application
    Filed: November 10, 2011
    Publication date: January 31, 2013
    Applicants: GEMANKOREA CO., LTD., HYUNDAI MOTOR COMPANY
    Inventors: Kyong Hwa Song, Do Suck Han, Chi Hoon Choi, Chan Choi, Myung-Hwan Lee, Sang-Tae Lee
  • Publication number: 20120257468
    Abstract: A semiconductor memory device includes a transmission line configured to transmit a fuse enable signal for performance of a repair operation; a first repair enable signal generation unit configured to receive the fuse enable signal through the transmission line and generate a first repair enable signal for performing a repair operation for a first bank; and a second repair enable signal generation unit configured to receive the fuse enable signal through the transmission line and generate a second repair enable signal for performing a repair operation for a second bank.
    Type: Application
    Filed: March 6, 2012
    Publication date: October 11, 2012
    Applicant: HYNIX SEMICONDUCTOR INC.
    Inventors: Myung Hwan LEE, Shin Ho CHU
  • Publication number: 20120249214
    Abstract: A driver circuit of a semiconductor apparatus includes a driver and a control unit configured to vary a voltage level of a power supply terminal of the driver in response to a standby mode signal.
    Type: Application
    Filed: December 21, 2011
    Publication date: October 4, 2012
    Applicant: HYNIX SEMICONDUCTOR INC.
    Inventors: Myung Hwan LEE, Shin Ho CHU
  • Publication number: 20110273149
    Abstract: The present invention relates to an automatic voltage regulator and a toroidal transformer, comprising: a main winding; a primary field winding excited in the main winding; a first switch unit for selectively connecting one end of the primary field winding to either a reference potential or the output terminal; a plurality of secondary field windings excited in the main winding; a second switch unit for selectively switching so that the plurality of secondary field windings are selectively connected to the primary field winding serially; a third switch unit for selectively connecting an end of a serial connection generated by selectively connecting the primary field winding and the secondary field windings to either the reference potential or the input terminal; and a control unit which regulates the level of an output voltage output to the output terminal.
    Type: Application
    Filed: January 20, 2009
    Publication date: November 10, 2011
    Applicants: CSKK (HKG) LIMITED
    Inventor: Myung Hwan Lee
  • Publication number: 20110043182
    Abstract: The present invention relates to an automatic voltage regulator, and more specifically, to an automatic voltage regulator capable of precisely controlling the output voltage level by using a toroidal autotransformer. The present invention has precise voltage control to enable the output of the voltage level desired by the user, and precisely carries out a variety of applications of power saving and voltage booster. In particular, the present invention can boost/reduce the input voltage to provide a desired target voltage within an error range of 1 volt or less. The present invention also comprises a simple relay switching circuit and excludes semiconductor switching devices, thereby being capable of operating adaptively in different system environments without an additional modification.
    Type: Application
    Filed: April 7, 2009
    Publication date: February 24, 2011
    Applicants: CSKK (HKG) LIMITED
    Inventor: Myung Hwan Lee
  • Patent number: 6061563
    Abstract: A method of moving a station in a wireless LAN, includes the step of: a station recognizing that a first access point of a first communication area is connected thereto, when the station is located in the first communication area, and storing corresponding connection information in an initial access point record area of its storage. The station requires the first access point to cancel the connection with the station, when the station moves from the first communication area to second communication area. The station requires a second access point of the second communication area to be connected thereto, when the station moves to the second communication area. Then, the second access point registers the station on the connection station list stored in its storage. The station transmits connection information about the first access point, stored in its initial access point record area, to the second access point, to inform the second access point that the station moved from the first communication area.
    Type: Grant
    Filed: August 28, 1997
    Date of Patent: May 9, 2000
    Assignee: LG Information & Communication, Ltd.
    Inventor: Myung-Hwan Lee
  • Patent number: 5763993
    Abstract: An electron gun for a color cathode ray tube is formed with a control electrode, an accelerating electrode, an anode, and a focusing electrode divided into a first and a second focusing electrode. A static focusing voltage predetermined independently of a deflection period is applied to the first focusing electrode and a parabolic waveform dynamic focusing voltage varying according to the deflection period is applied to the second focusing electrode. The first focusing electrode has three electron beam apertures with vertical parallel plates mounted around each aperture in a direction opposite to the direction of the electron beams. The second focusing electrode has three electron beam apertures with horizontal parallel plates mounted around each aperture in a direction opposite to the direction of the electron beams. The centers of the left and right electron beam apertures are offset to the left and right sides of the central axis of the vertical and horizontal parallel plates.
    Type: Grant
    Filed: May 28, 1996
    Date of Patent: June 9, 1998
    Assignee: Samsung Display Devices Co., Ltd.
    Inventors: In-kyu Park, Myung-hwan Lee, Duk-ho Kim