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).
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Patent number: 9791726Abstract: 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: GrantFiled: November 25, 2014Date of Patent: October 17, 2017Assignee: LG DISPLAY CO., LTD.Inventors: Kwan Son Kim, Joo Hong Lee, Woong Ki Min, Yoonsan Park
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Publication number: 20170148417Abstract: 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: ApplicationFiled: November 23, 2016Publication date: May 25, 2017Inventors: Joo-Hong LEE, Ho-Up SONG, Soo-Lyun KIM
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Patent number: 9361849Abstract: 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: GrantFiled: June 30, 2014Date of Patent: June 7, 2016Assignee: LG Display Co., Ltd.Inventors: Sung-Gon Park, Joo-Hong Lee, Woong-Ki Min, Yoon-San Park
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Patent number: 9241071Abstract: 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: GrantFiled: July 18, 2014Date of Patent: January 19, 2016Assignee: Samsung Electronics Co., LtdInventors: Joo-Hong Lee, Chul-Hoon Hwang
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Publication number: 20150146141Abstract: 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: ApplicationFiled: November 25, 2014Publication date: May 28, 2015Inventors: Kwan Son KIM, Joo Hong LEE, Woong Ki MIN, Yoonsan PARK
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Publication number: 20150023488Abstract: 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: ApplicationFiled: July 18, 2014Publication date: January 22, 2015Inventors: Joo-Hong Lee, Chul-Hoon Hwang
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Publication number: 20150002503Abstract: 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: ApplicationFiled: June 30, 2014Publication date: January 1, 2015Inventors: Sung-Gon PARK, Joo-Hong LEE, Woong-Ki MIN, Yoon-San PARK
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Patent number: 8638323Abstract: 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: GrantFiled: December 30, 2008Date of Patent: January 28, 2014Assignee: LG Display Co., Ltd.Inventors: Joo Hong Lee, Hong Sung Song, Oh Hyun Lee, Woong Ki Min
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Patent number: 8624937Abstract: 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: GrantFiled: November 20, 2008Date of Patent: January 7, 2014Assignee: LG Display Co., Ltd.Inventors: Joo Hong Lee, Hong Sung Song, Woong Ki Min, Yong Gi Son
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Patent number: 8373819Abstract: 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: GrantFiled: December 2, 2009Date of Patent: February 12, 2013Assignee: LG. Display Co. Ltd.Inventors: Joo Hong Lee, Hong Sung Song, Seok Hwan Oh, Woong Ki Min, Ji Woon Min
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Patent number: 8218121Abstract: 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: GrantFiled: June 8, 2006Date of Patent: July 10, 2012Assignee: LG Display Co., Ltd.Inventors: Joo Hong Lee, Jae Hyun Park
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Patent number: 8194645Abstract: 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: GrantFiled: July 13, 2007Date of Patent: June 5, 2012Assignee: Samsung Electronics Co., Ltd.Inventor: Joo-Hong Lee
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Publication number: 20100157196Abstract: 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: ApplicationFiled: December 2, 2009Publication date: June 24, 2010Inventors: Joo Hong Lee, Hong Sung Song, Seok Hwan Oh, Woong Ki Min, Ji Woon Min
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Publication number: 20100073339Abstract: 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: ApplicationFiled: December 30, 2008Publication date: March 25, 2010Inventors: Joo Hong Lee, Hong Sung Song, Oh Hyun Lee, Woong Ki Min
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Patent number: 7593728Abstract: 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: GrantFiled: February 6, 2006Date of Patent: September 22, 2009Assignee: Samsung Electronics Co., Ltd.Inventors: Joo-Hong Lee, Doo-Yong Yang, Soo-Hwan Kim, Geun-Myeon Lee
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Publication number: 20090153593Abstract: 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: ApplicationFiled: November 20, 2008Publication date: June 18, 2009Inventors: Joo Hong Lee, Hong Sung Song, Woong Ki Min, Yong Gi Son
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Publication number: 20080175229Abstract: 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: ApplicationFiled: July 13, 2007Publication date: July 24, 2008Inventor: Joo-Hong Lee
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Patent number: 7385664Abstract: 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: GrantFiled: October 22, 2004Date of Patent: June 10, 2008Assignee: LG.Philips LCD Co., Ltd.Inventors: Joo-Hong Lee, Jae-Hyun Park
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Patent number: 7289818Abstract: 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: GrantFiled: November 15, 2004Date of Patent: October 30, 2007Assignee: Samsung Electronics Co., Ltd.Inventors: Ki-Heon Yoon, Tai-Yoon Lee, Joo-Hong Lee
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Patent number: D966373Type: GrantFiled: September 8, 2020Date of Patent: October 11, 2022Assignee: WOOWA BROTHERS CO., LTD.Inventors: Myung su Han, Jo Seph Kim, Joo Hong Lee, Jin Seok Park, Ju Yeong Kim