Patents by Inventor Joo Hong Lee

Joo Hong 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).

  • Patent number: 9791726
    Abstract: A stereoscopic three-dimensional image display device is disclosed which includes: a liquid crystal display panel defined into a plurality of pixel regions; a data driver to supply data voltages to the pixel regions; a patterned retarder disposed on a front surface of the liquid crystal display panel to polarize light from the liquid crystal display panel. The patterned retarder includes a first patterned retarder, to circularly polarize light from the liquid crystal display panel in a first direction and formed in a height greater than that of a pixel region of the plurality of pixel regions, and second patterned retarder to circularly polarize light from the liquid crystal display panel in a second direction opposite the first direction and formed in a height greater than that of the pixel region.
    Type: Grant
    Filed: November 25, 2014
    Date of Patent: October 17, 2017
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Kwan Son Kim, Joo Hong Lee, Woong Ki Min, Yoonsan Park
  • Publication number: 20170148417
    Abstract: Disclosed is an electronic device that includes a first processor that monitors whether screen updating is delayed based on a reference time associated with screen updating and generates a control signal that controls a screen updating time based on whether the screen updating is delayed, and a clock managing unit that controls a clock that is supplied to the electronic device in response to the control signal.
    Type: Application
    Filed: November 23, 2016
    Publication date: May 25, 2017
    Inventors: Joo-Hong LEE, Ho-Up SONG, Soo-Lyun KIM
  • Patent number: 9361849
    Abstract: A data driving apparatus for a liquid crystal display device includes an output buffer for buffering and outputting a data voltage input from a digital-analog converter, wherein the output buffer includes an input amplifier for amplifying and outputting current proportional to the data voltage, an outputter for supplying a data voltage corresponding to the input data voltage to an output channel using charging and discharging current proportional to output current from the input amplifier, a control switch unit connected between the input amplifier and the outputter, for driving the outputter in a switching mode to precharge the output channel in a precharge period prior to a data supplying period in which the outputter outputs the data voltage, and a mode controller for controlling the control switch unit in response to an input control signal.
    Type: Grant
    Filed: June 30, 2014
    Date of Patent: June 7, 2016
    Assignee: LG Display Co., Ltd.
    Inventors: Sung-Gon Park, Joo-Hong Lee, Woong-Ki Min, Yoon-San Park
  • Patent number: 9241071
    Abstract: An operation method and apparatus of a terminal for call move are provided. The method includes, if receiving a call move request signal including registration information of a first device that is in voice communication with a second device from the first device, transmitting, by the terminal, a call state request signal for the first device using the registration information to a server, if determining that a call state for the first device is not a call through the server by using a call state response signal received from the server, establishing, by the terminal, a wireless connection with the first device, and, performing, by the terminal, voice communication with the second device through the established wireless connection.
    Type: Grant
    Filed: July 18, 2014
    Date of Patent: January 19, 2016
    Assignee: Samsung Electronics Co., Ltd
    Inventors: Joo-Hong Lee, Chul-Hoon Hwang
  • Publication number: 20150146141
    Abstract: A stereoscopic three-dimensional image display device is disclosed which includes: a liquid crystal display panel defined into a plurality of pixel regions; a data driver to supply data voltages to the pixel regions; a patterned retarder disposed on a front surface of the liquid crystal display panel to polarize light from the liquid crystal display panel. The patterned retarder includes a first patterned retarder, to circularly polarize light from the liquid crystal display panel in a first direction and formed in a height greater than that of a pixel region of the plurality of pixel regions, and second patterned retarder to circularly polarize light from the liquid crystal display panel in a second direction opposite the first direction and formed in a height greater than that of the pixel region.
    Type: Application
    Filed: November 25, 2014
    Publication date: May 28, 2015
    Inventors: Kwan Son KIM, Joo Hong LEE, Woong Ki MIN, Yoonsan PARK
  • Publication number: 20150023488
    Abstract: An operation method and apparatus of a terminal for call move are provided. The method includes, if receiving a call move request signal including registration information of a first device that is in voice communication with a second device from the first device, transmitting, by the terminal, a call state request signal for the first device using the registration information to a server, if determining that a call state for the first device is not a call through the server by using a call state response signal received from the server, establishing, by the terminal, a wireless connection with the first device, and, performing, by the terminal, voice communication with the second device through the established wireless connection.
    Type: Application
    Filed: July 18, 2014
    Publication date: January 22, 2015
    Inventors: Joo-Hong Lee, Chul-Hoon Hwang
  • Publication number: 20150002503
    Abstract: A data driving apparatus for a liquid crystal display device includes an output buffer for buffering and outputting a data voltage input from a digital-analog converter, wherein the output buffer includes an input amplifier for amplifying and outputting current proportional to the data voltage, an outputter for supplying a data voltage corresponding to the input data voltage to an output channel using charging and discharging current proportional to output current from the input amplifier, a control switch unit connected between the input amplifier and the outputter, for driving the outputter in a switching mode to precharge the output channel in a precharge period prior to a data supplying period in which the outputter outputs the data voltage, and a mode controller for controlling the control switch unit in response to an input control signal.
    Type: Application
    Filed: June 30, 2014
    Publication date: January 1, 2015
    Inventors: Sung-Gon PARK, Joo-Hong LEE, Woong-Ki MIN, Yoon-San PARK
  • Patent number: 8638323
    Abstract: Disclosed is a system and method for correcting a gamma for shortening a gamma correction time period and improving gamma correction efficiency and reliability thereof, and simplifying a gamma correction device for reducing a production cost of image display devices.
    Type: Grant
    Filed: December 30, 2008
    Date of Patent: January 28, 2014
    Assignee: LG Display Co., Ltd.
    Inventors: Joo Hong Lee, Hong Sung Song, Oh Hyun Lee, Woong Ki Min
  • Patent number: 8624937
    Abstract: A gray scale voltage generator includes a voltage dividing resistor string to generate blue (B), red (R), and green (G) gamma voltage signals, the voltage dividing resistor string including a B gamma voltage signal generating section, a R/G gamma voltage generating section, and a common (COM) gamma voltage generating section to individually control a B gray scale voltage and a R/G gray scale voltage to maintain a constant color temperature.
    Type: Grant
    Filed: November 20, 2008
    Date of Patent: January 7, 2014
    Assignee: LG Display Co., Ltd.
    Inventors: Joo Hong Lee, Hong Sung Song, Woong Ki Min, Yong Gi Son
  • Patent number: 8373819
    Abstract: A backlight unit capable of preventing an initial driving malfunction is disclosed. The backlight unit includes a bottom cover opened upwardly, a reflective sheet disposed in the inner surface of the bottom cover; a plurality of lamps arranged at a fixed interval on the reflective sheet; an auxiliary light source disposed at the outer side surface of the bottom cover; and a light guide member, opposite to the emitting surface of the auxiliary light source, configured to guide light emitted from the auxiliary light source to the lamps through first and second penetration holes formed on one of the side walls of the bottom cover and the reflective sheet.
    Type: Grant
    Filed: December 2, 2009
    Date of Patent: February 12, 2013
    Assignee: LG. Display Co. Ltd.
    Inventors: Joo Hong Lee, Hong Sung Song, Seok Hwan Oh, Woong Ki Min, Ji Woon Min
  • Patent number: 8218121
    Abstract: The present invention relates to a liquid crystal device to which a line on glass structure and a cascade structure are both applied, and a manufacturing method thereof. The liquid crystal device includes: a liquid crystal panel including a plurality of pixels defined by gate lines and data lines that cross each other, wherein a first group of signal lines is formed on the liquid crystal panel in an on-glass-configuration; a plurality of tape carrier packages mounted with source drivers that provide data signals through the data lines to the liquid crystal panel and mounted on the liquid crystal panel in a cascade structure, wherein a second group of signal lines connected to the first group of signal lines is formed thereon; and a printed circuit board combined directly with only one of the plurality of tape carrier packages so as to supply a plurality of driving signals and control signals to the liquid crystal panel.
    Type: Grant
    Filed: June 8, 2006
    Date of Patent: July 10, 2012
    Assignee: LG Display Co., Ltd.
    Inventors: Joo Hong Lee, Jae Hyun Park
  • Patent number: 8194645
    Abstract: A method for controlling blind/attended transfer in an SIP-based network includes: transmitting, by an SIP-based terminal, a call request message to a third terminal, which is an object of a call transfer, after pausing a communication with a second terminal by transmitting a call waiting message to the SIP server; determining, by the SIP-based terminal, whether a call transfer function (Hook on) has been activated prior to receiving a call response (200OK) signal from the SIP server; and performing, by the SIP-based terminal, the blind transfer with the third terminal by transmitting a call transfer message (REFER) to the SIP server upon the call transfer function (Hook on) being activated prior to receiving the call response message from the SIP server. The SIP-based terminal processes the blind/attended transfer using one input, thereby providing convenience to a user.
    Type: Grant
    Filed: July 13, 2007
    Date of Patent: June 5, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Joo-Hong Lee
  • Publication number: 20100157196
    Abstract: A backlight unit capable of preventing an initial driving malfunction is disclosed. The backlight unit includes a bottom cover opened upwardly, a reflective sheet disposed in the inner surface of the bottom cover; a plurality of lamps arranged at a fixed interval on the reflective sheet; an auxiliary light source disposed at the outer side surface of the bottom cover; and a light guide member, opposite to the emitting surface of the auxiliary light source, configured to guide light emitted from the auxiliary light source to the lamps through first and second penetration holes formed on one of the side walls of the bottom cover and the reflective sheet.
    Type: Application
    Filed: December 2, 2009
    Publication date: June 24, 2010
    Inventors: Joo Hong Lee, Hong Sung Song, Seok Hwan Oh, Woong Ki Min, Ji Woon Min
  • Publication number: 20100073339
    Abstract: Disclosed is a system and method for correcting a gamma for shortening a gamma correction time period and improving gamma correction efficiency and reliability thereof, and simplifying a gamma correction device for reducing a production cost of image display devices.
    Type: Application
    Filed: December 30, 2008
    Publication date: March 25, 2010
    Inventors: Joo Hong Lee, Hong Sung Song, Oh Hyun Lee, Woong Ki Min
  • Patent number: 7593728
    Abstract: In a private wireless communication system and a mobile station (MS) control method using the same, the system informs an MS of its entrance into a private network using a system parameter message broadcast through a paging channel in order to control additional functions of the MS (e.g., a camera function, a MP3 player function, and a USB data communication function), and the MS transmits a registration message to the private wireless communication system through an access channel. The system determines whether the MS is registered in the private network based on the registration message from the MS, and if the MS is registered in the private network, controls the functions of the MS by writing a message for MS function control based on MS control information set in a database, and by and transmitting the MS function control message to the MS.
    Type: Grant
    Filed: February 6, 2006
    Date of Patent: September 22, 2009
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Joo-Hong Lee, Doo-Yong Yang, Soo-Hwan Kim, Geun-Myeon Lee
  • Publication number: 20090153593
    Abstract: A gray scale voltage generator includes a voltage dividing resistor string to generate blue (B), red (R), and green (G) gamma voltage signals, the voltage dividing resistor string including a B gamma voltage signal generating section, a R/G gamma voltage generating section, and a common (COM) gamma voltage generating section to individually control a B gray scale voltage and a R/G gray scale voltage to maintain a constant color temperature.
    Type: Application
    Filed: November 20, 2008
    Publication date: June 18, 2009
    Inventors: Joo Hong Lee, Hong Sung Song, Woong Ki Min, Yong Gi Son
  • Publication number: 20080175229
    Abstract: A method for controlling blind/attended transfer in an SIP-based network includes: transmitting, by an SIP-based terminal, a call request message to a third terminal, which is an object of a call transfer, after pausing a communication with a second terminal by transmitting a call waiting message to the SIP server; determining, by the SIP-based terminal, whether a call transfer function (Hook on) has been activated prior to receiving a call response (200OK) signal from the SIP server; and performing, by the SIP-based terminal, the blind transfer with the third terminal by transmitting a call transfer message (REFER) to the SIP server upon the call transfer function (Hook on) being activated prior to receiving the call response message from the SIP server. The SIP-based terminal processes the blind/attended transfer using one input, thereby providing convenience to a user.
    Type: Application
    Filed: July 13, 2007
    Publication date: July 24, 2008
    Inventor: Joo-Hong Lee
  • Patent number: 7385664
    Abstract: A liquid crystal display (LCD) module includes a liquid crystal panel, a backlight assembly to supply light to the liquid crystal panel, at least one first flexible film having first printed circuit patterns, a gate driving integrated circuit (IC) on the first flexible film, at least one ground pad on the first flexible film, and a top case electrically connected to the ground pad.
    Type: Grant
    Filed: October 22, 2004
    Date of Patent: June 10, 2008
    Assignee: LG.Philips LCD Co., Ltd.
    Inventors: Joo-Hong Lee, Jae-Hyun Park
  • Patent number: 7289818
    Abstract: In a Short Message Service (SMS) between private wireless network systems in a multi-zone arrangement, when private wireless network systems, which have been separately placed, are configured in one service area called a multi-zone arrangement, Home Location Register (HLR) information is periodically updated and synchronized through interfacing between the private wireless network systems in the multi-zone arrangement, and making it possible to determine whether or not a receiving terminal is positioned in a service area of which of the private wireless network systems using the synchronized HLR information. An SMS transmission is requested to a call processor of the associated private wireless network system to allow performing SMS message transmission to the associated terminal.
    Type: Grant
    Filed: November 15, 2004
    Date of Patent: October 30, 2007
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Ki-Heon Yoon, Tai-Yoon Lee, Joo-Hong Lee
  • Patent number: D966373
    Type: Grant
    Filed: September 8, 2020
    Date of Patent: October 11, 2022
    Assignee: WOOWA BROTHERS CO., LTD.
    Inventors: Myung su Han, Jo Seph Kim, Joo Hong Lee, Jin Seok Park, Ju Yeong Kim