Patents by Inventor Sang-Keun Lee

Sang-Keun 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: 8933917
    Abstract: A timing controller includes a receiver, an internal clock generator, a first frequency converter, a first selector and a control signal generator. The receiver receives an image signal and a main clock signal having a first spread spectrum frequency from an external system, converts the main clock signal to a converted main clock signal and the image signal to a first converted image signal, and outputs the converted main clock signal as a first clock signal having a plurality of frequencies. The internal clock generator multiplies the frequencies of the first clock signal and generates a second clock signal having a frequency band within the multiplied frequencies of the first clock signal. The first frequency converter converts the second clock signal to a third clock signal having a second spread spectrum frequency.
    Type: Grant
    Filed: July 14, 2011
    Date of Patent: January 13, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventors: Yong-Bum Kim, Bong-Ju Jun, Dong-Hyun Yeo, Sang Keun Lee
  • Publication number: 20140369601
    Abstract: Provided are an apparatus and method for enhancing an image using a color channel. A pre-processing unit generates an inverted image by inverting a luminance component estimated from a red (R) channel among color channels of a red, green, and blue (RGB) color space of an input image. A channel merging unit generates a merged luminance (L) channel by merging an L channel of an International Commission on Illumination (CIE) L*a*b* (CIELab) color space of the input image and the inverted image. A contrast enhancement unit enhances contrast by expanding a histogram of the merged L channel. A color restoration unit combines the merged L channel whose contrast has been enhanced and chromaticity components of the input image, and converts a resultant color image to the RGB color space, thereby generating a restored image.
    Type: Application
    Filed: September 12, 2012
    Publication date: December 18, 2014
    Applicant: CHUNG-ANG UNIVERSITY INDUSTRY-ACADEMY COOPERATION FOUNDATION
    Inventors: Sang-Keun Lee, Jin Kim
  • Publication number: 20140242361
    Abstract: Disclosed therein is a sheet for green roof that includes a copper or aluminum thin film or a nonwoven fabric having a predetermined thickness firmly laminated on both sides of a glass fabric having a predetermined area through an adhesive to prevent the root growth of plants and maximizes insulation from moisture, thermal insulation, and reduction of thermal conductivity, thereby extending the lifetimes of the sheet, the waterproof layer and the building structure.
    Type: Application
    Filed: May 5, 2014
    Publication date: August 28, 2014
    Applicant: RENEW SYSTEM CO., LTD
    Inventors: Sang-Keun LEE, Jong-Yong LEE, Il-Kyu CHO
  • Publication number: 20130329268
    Abstract: A method for eliminating hologram DC noise and a hologram device using the same are provided. The method for processing the hologram includes: receiving input of hologram data; and implementing a differential operation with respect to the hologram data. Accordingly, the hologram data is processed by implementing the differential operation with respect to the hologram data, so that DC noise occurring when the hologram is reconstructed can be effectively eliminated.
    Type: Application
    Filed: May 31, 2013
    Publication date: December 12, 2013
    Inventors: Choong Sang Cho, Byeong Ho Choi, Hoon Jong Kang, Sang Keun Lee
  • Patent number: 8562153
    Abstract: A laser scanning display including a micro scanning mirror, and a beam alignment method thereof are disclosed. A scanning display includes a frame, at least one light source fixedly secured to the frame, a lens positioned in front of a light emission surface of the light source, the lens having a holder detachably mounted to an external adjusting device which is to make fine adjustment to finish beam alignment, and a fastening portion for fastening the lens having beam alignment finished thus to the frame.
    Type: Grant
    Filed: July 1, 2009
    Date of Patent: October 22, 2013
    Assignee: LG Electronics Inc.
    Inventors: Sang Keun Lee, Dong Uk Lee, Jae Wook Kwon
  • Patent number: 8559531
    Abstract: An apparatus for serial communication using embedded clock signals is presented. The apparatus includes a clock-embedded signal generator for generating a data signal and a data-bar signal displaying a data stream according to relative positions and, when an external clock is input, generating a clock-embedded data signal and a clock-embedded data-bar signal by equalizing the data signal and the data-bar signal. The apparatus also includes a clock-embedded signal recovery unit for recovering the data signal and the data-bar signal according to relative positions of the clock-embedded data signal and the clock-embedded data-bar signal, and recovering synchronization information of the clock by detecting when the clock-embedded data signal and the clock-embedded data-bar signal are equalized. A method for serial communication using embedded clock signals is also presented.
    Type: Grant
    Filed: June 29, 2011
    Date of Patent: October 15, 2013
    Assignee: Samsung Display Co., Ltd.
    Inventor: Sang-Keun Lee
  • Publication number: 20130073569
    Abstract: A portable communication device for extracting a user interest comprises a term vector generation unit for generating, based on types of text data stored in the portable communication device, a term vector representing each text data, a subject classification tree storage unit for storing a subject classification tree, which is a tree structure in which multiple nodes, each including at least one training data and representing a subject, are connected to one another, and a similarity calculation unit for calculating a similarity between the term vector and the training data for each node in the subject classification tree. The similarity calculation unit extracts a node name representing the user interest from the subject classification tree based on the similarity.
    Type: Application
    Filed: January 31, 2011
    Publication date: March 21, 2013
    Inventors: Sang Keun Lee, Jong Woo Ha, Jung Hyun Lee
  • Patent number: 8400378
    Abstract: An electro-luminescence display having a plurality of pixels is disclosed. One of the pixels of the electro-luminescence display includes an electro-luminescence diode electrically connected between first and second voltage sources; first and second thin film transistors adjusting an amount of current flowing to the electro-luminescence diode; and a control circuit complementarily operating the first and second thin film transistors in an active mode and a refresh mode.
    Type: Grant
    Filed: March 8, 2012
    Date of Patent: March 19, 2013
    Assignee: LG Display Co., Ltd.
    Inventors: In Hwan Kim, Seung Chan Byun, Jin Chul Choi, Jin Hyoung Kim, Sang Keun Lee
  • Publication number: 20120206429
    Abstract: A method of processing data including dividing, at a transmitter, data into 3-bit units, generating, at the transmitter, first and second clock embedded data signals and a third data signal, wherein a clock signal and first bits of the units are included in the first clock embedded data signal, the clock signal and second bits of the units are included in the second clock embedded data signal and third bits of the units are included in the third data signal, transmitting, from the transmitter to a receiver, the first and second clock embedded data signals and the third data signal, and restoring, at the receiver, the first and second bits and the clock signal from the first and second clock embedded data signals and the third bits from the third data signal.
    Type: Application
    Filed: December 6, 2011
    Publication date: August 16, 2012
    Inventors: Sang-Keun Lee, Seung-Seok NAM, Sung-Gon JUNG, Sang-Su HAN
  • Patent number: 8244925
    Abstract: Provided are a circuit board that stores Extended Display Identification Data (EDID) information provided externally and a liquid crystal display (LCD) comprising the same. The liquid crystal display comprises a circuit board and a liquid crystal panel. The circuit board comprises a first connector which receives an externally provided video signal, a second connector which receives an externally provided EDID signal, a memory coupled to the second connector that receives and stores the EDID signal, and a timing controller which receives the video signal from the first connector and generates a video data voltage by using the EDID signal. The liquid crystal panel responds to the video data voltage and displays a video image.
    Type: Grant
    Filed: August 26, 2008
    Date of Patent: August 14, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Dong-won Park, Sang-keun Lee, Jin-kyu Park
  • Publication number: 20120202026
    Abstract: Disclosed therein is a sheet for green roof that includes a copper or aluminum thin film or a nonwoven fabric having a predetermined thickness firmly laminated on both sides of a glass fabric having a predetermined area through an adhesive to prevent the root growth of plants and maximizes insulation from moisture, thermal insulation, and reduction of thermal conductivity, thereby extending the lifetimes of the sheet, the waterproof layer and the building structure.
    Type: Application
    Filed: November 23, 2009
    Publication date: August 9, 2012
    Inventors: Sang-Keun Lee, Jong-Yong Lee, Il-Kyu Cho
  • Patent number: 8239300
    Abstract: A method and system for extracting a weight classified by a ranking which can calculate, in a keyword advertisement, a unit sale cost of an advertisement area exposing advertisement information by considering an advertising effect classified by a keyword, the advertising effect being acquired by using the corresponding advertisement area, is provided. The method of extracting a weight classified by a ranking includes the steps of: generating the advertisement area, wherein one keyword corresponds to a plurality of advertisement areas and each of the plurality of advertisement areas corresponds to the ranking; and extracting a weight value for advertising costs of the advertisement area by considering an advertising effect classified by the ranking of the advertisement area corresponding to a click-through rate (CTR), and the ranking.
    Type: Grant
    Filed: October 9, 2007
    Date of Patent: August 7, 2012
    Assignee: NHN Business Platform Corporation
    Inventors: Sang Keun Lee, Min Uk Kim
  • Publication number: 20120196956
    Abstract: Disclosed therein is an unvulcanized adhesive waterproof material using reclaimed rubber and a preparation method thereof, and more particularly, an unvulcanized adhesive waterproof material using reclaimed rubber and a preparation method thereof, where reclaimed rubber is added to a softener, a tackifier, a filler, an SBS resin, a PVA pressure sensitive adhesive, etc. and subjected to mechanically forced mixing to form a highly adhesive material, which is then applied on asphalt sheets, HDPE sheets, nonwoven fabric, PE foam, or the like according to the intended use purpose to form a waterproof sheet.
    Type: Application
    Filed: November 23, 2009
    Publication date: August 2, 2012
    Inventors: Sang Keun Lee, Jong Yong Lee, Il Kyu Cho, Jin Sung Kim
  • Publication number: 20120169686
    Abstract: A timing controller includes a receiver, an internal clock generator, a first frequency converter, a first selector and a control signal generator. The receiver receives an image signal and a main clock signal having a first spread spectrum frequency from an external system, converts the main clock signal to a converted main clock signal and the image signal to a first converted image signal, and outputs the converted main clock signal as a first clock signal having a plurality of frequencies. The internal clock generator multiplies the frequencies of the first clock signal and generates a second clock signal having a frequency band within the multiplied frequencies of the first clock signal. The first frequency converter converts the second clock signal to a third clock signal having a second spread spectrum frequency.
    Type: Application
    Filed: July 14, 2011
    Publication date: July 5, 2012
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Yong-Bum KIM, Bong-Ju JUN, Dong-Hyun YEO, Sang Keun LEE
  • Publication number: 20120162052
    Abstract: An electro-luminescence display having a plurality of pixels is disclosed. One of the pixels of the electro-luminescence display includes an electro-luminescence diode electrically connected between first and second voltage sources; first and second thin film transistors adjusting an amount of current flowing to the electro-luminescence diode; and a control circuit complementarily operating the first and second thin film transistors in an active mode and a refresh mode.
    Type: Application
    Filed: March 8, 2012
    Publication date: June 28, 2012
    Inventors: In Hwan KIM, Seung Chan BYUN, Jin Chul CHOI, Jin Hyoung KIM, Sang Keun LEE
  • Patent number: 8188960
    Abstract: An apparatus for driving a display device includes a plurality of data driving integrated circuits which generates data voltages and a signal controller which inputs a first load signal to a data driving integrated circuit of the plurality of data driving integrated circuits to control the data driving integrated circuit. Each data driving integrated circuit of the plurality of data driving integrated circuits includes a load signal converter which generates a second load signal having a falling time which is different than a falling time of the first load signal.
    Type: Grant
    Filed: March 6, 2008
    Date of Patent: May 29, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Sang-Keun Lee
  • Patent number: 8188475
    Abstract: An organic electroluminescent device includes a first substrate including a plurality of pixel regions; a thin film transistor on the first substrate and in each pixel region; a second substrate facing the first substrate; an organic electroluminescent diode on the second substrate and connected to the thin film transistor; a seal pattern at edges of the first and second substrates; and an adhesive layer including a plurality of conductive balls, an inner space defined by the first substrate, the second substrate and the seal pattern filled with the adhesive layer.
    Type: Grant
    Filed: October 19, 2009
    Date of Patent: May 29, 2012
    Assignee: LG Display Co., Ltd.
    Inventors: Sang-Keun Lee, Ho-Jin Kim, Joon-Young Heo, Joong-Hwan Yang
  • Patent number: 8154479
    Abstract: An electro-luminescence display having a plurality of pixels is disclosed. One of the pixels of the electro-luminescence display includes an electro-luminescence diode electrically connected between first and second voltage sources; first and second thin film transistors adjusting an amount of current flowing to the electro-luminescence diode; and a control circuit complementarily operating the first and second thin film transistors in an active mode and a refresh mode.
    Type: Grant
    Filed: December 28, 2007
    Date of Patent: April 10, 2012
    Assignee: LG Display Co., Ltd.
    Inventors: In Hwan Kim, Seung Chan Byun, Jin Chul Choi, Jin Hyoung Kim, Sang Keun Lee
  • Publication number: 20110261027
    Abstract: A display apparatus includes a display part including a plurality of data lines to display an image, a data driver electrically connected to the data lines to apply data signals to the data lines, a controller converting an input image signal into a data format used by the data driver and transmitting the converted image signal to the data driver using a differential signaling scheme, and a filter filtering the converted image signal provided from the controller in the differential signaling scheme and passing the filtered image signal to the data driver.
    Type: Application
    Filed: August 2, 2010
    Publication date: October 27, 2011
    Inventor: Sang Keun Lee
  • Publication number: 20110255585
    Abstract: Apparatus for serial communication using embedded clock signals includes a data divider for dividing a data stream into odd-numbered and even-numbered data streams; a clock-embedded signal generator for generating odd-numbered and even-numbered embedded clock signals by pulse amplitude modulating the odd-numbered and even-numbered data streams and, when an external clock is input, inverting polarities of the pulse amplitude modulated odd-numbered and even-numbered data streams; a clock-embedded signal recovery unit for recovering the odd-numbered and even-numbered data streams by comparing amplitudes of the odd-numbered and even-numbered embedded clock signals with reference voltages, respectively, and recovering synchronization information of the clock by detecting when amplitude polarities of the odd-numbered and even-numbered embedded clock signals are inverted; and a data integrator for integrating the odd-numbered and even-numbered data streams and supplying the result as the data stream.
    Type: Application
    Filed: June 29, 2011
    Publication date: October 20, 2011
    Inventor: Sang-Keun Lee