Patents by Inventor Jae-han Lee

Jae-han 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: 20090160844
    Abstract: A data driving circuit receiving an image signal and applying a data signal based on the image signal to a display panel, the data driving circuit includes a signal generator that generates a horizontal scanning identical signal based on the image signal and a load signal instructing an output of the data signal to the display panel; a signal amplifier that alternately converts a polarity of an offset compensation value from positive to negative and amplifies the image signal based on the offset compensation value; and a controller that counts pulses of the horizontal scanning identical signal and controls the signal amplifier to retain the converted polarity of the offset compensation value until a counted reaches a predetermined reference value.
    Type: Application
    Filed: September 30, 2008
    Publication date: June 25, 2009
    Inventors: Jae-han Lee, Chang-soo Lee
  • Publication number: 20090129527
    Abstract: A refueling apparatus for charging nuclear fuel in a reactor vessel, the refueling apparatus including: a refueling unit loading new nuclear fuel to a core or extracting spent nuclear fuel from the core; and a waveguide sensor unit including an ultrasonic wedge to form a Lamb wave, a waveguide with an end connected to the ultrasonic wedge and with another end transmitting the Lamb wave into the reactor vessel, and an ultrasonic sensor connected to the ultrasonic wedge and sensing a reflection signal reflected from an inside of the reactor vessel, the waveguide being formed in a plate shape and mounted in an end of the refueling unit. The waveguide integrally moves with the refueling unit, and the waveguide sensor unit detects a condition of the inside of the reactor vessel, while the refueling unit refuels the fuel assembly in the reactor vessel.
    Type: Application
    Filed: November 12, 2008
    Publication date: May 21, 2009
    Inventors: Young- Sang Joo, Chang- Gyu Park, Seok- Hoon Kim, Gyeong- Hoi Koo, Jae- Han Lee
  • Publication number: 20090132730
    Abstract: The present invention relates to an apparatus and method for controlling power to a Universal Serial Bus (USB) device. The present invention provides an apparatus for controlling power to a USB device, the USB device being used to connect a Personal Computer (PC) with a peripheral device, the power control apparatus including a plug-in port for connecting the peripheral device with the PC, a state detector for detecting whether the peripheral device is in a preparation completion state, a power supply unit for supplying power to the USB device, and a power control unit for controlling the power supply unit so that power is supplied to the USB device if it is determined that the peripheral device is in a plugged-in state, and if it is determined that the peripheral device is in a preparation completion state by the state detector.
    Type: Application
    Filed: May 15, 2007
    Publication date: May 21, 2009
    Inventors: Kyung-Beom Kim, Young-Hwan Kim, Tae-Gyun Kim, Min-sick Park, Jae-Han Lee, Jang Gwang-Sig, Sang-Hyun Han
  • Publication number: 20090051651
    Abstract: Problem: since a remote pointing system using an image sensor and having a communication function through an infrared remote controller is used in various environments, the various environments have to be considered when designing the system. Solution: a signal reception unit outputs a control signal controlled to operate in a mode that corresponds to an infrared signal received from a remote controller among a remote control mode and a remote pointing mode. When receiving a control signal controlled to operate in the remote pointing mode from the signal reception unit, an image reception unit is operated to obtain a background image during a first signal reception section and obtains an optical image that corresponds to an infrared signal received from the remote controller during a second signal reception section. The infrared signal is not received during the first signal reception section and received during the second signal reception section from the remote controller.
    Type: Application
    Filed: January 5, 2006
    Publication date: February 26, 2009
    Inventors: Sang-Hyun Han, Jae-Han Lee, Chang-Suc Han, Woo-Seok Song
  • Publication number: 20080303809
    Abstract: Disclosed are a display and a method of driving the display. The display includes a display panel on which a plurality of data lines are formed, a data driver for supplying data voltages generated by modulating input image data to the respective data lines. The data driver includes a precharging unit for selecting a specific precharge voltage from a plurality of precharge voltages applied to the data driver depending on grayscale sections of the input image data, and for precharging the selected precharge voltages to the respective data lines. A predetermined voltage is precharged according to a grayscale section of image data and then applied to a pixel, whereby voltage rising time and voltage falling time when charging the pixel can be shortened. Therefore, even though the charge time of the pixel is shortened and bias current of the data driver is thus reduced, it is possible to obtain high driving performance.
    Type: Application
    Filed: February 22, 2008
    Publication date: December 11, 2008
    Inventor: Jae Han Lee
  • Publication number: 20080136806
    Abstract: A liquid crystal display having data driving apparatus comprising first and second output switches, a charge sharing line, and first and second charge sharing switches. The first output switch switches an electrical connection between a first amplifier providing a positive gradation voltage and a first data line in response to a control signal. The second output switch switches an electrical connection between a second amplifier providing a negative gradation voltage and a second data line in response to the control signal. The first charge sharing switch switches an electrical connection between the first data line and the charge sharing line in response to the control signal. The second charge sharing switch switches an electrical connection between the second data line and the charge sharing line in response to the control signal.
    Type: Application
    Filed: December 7, 2007
    Publication date: June 12, 2008
    Inventors: Jae-Han LEE, Sun-Kyu Son, Myong-Bin Lim, In-Yong Hwang, Ock-Jin Kim
  • Publication number: 20080084378
    Abstract: A display device and a method for driving the same wherein the timing of the gate clock signal, which is an output of a timing controller, is changed to a time before a data latch signal is applied, so that degradation of the image due to gate noise can be prevented. That is, a gate turn-on voltage is applied before the data latch signal to turn on thin film transistors in an interval in which a gate turn-off voltage is stabilized. Accordingly, the generation of horizontal streaks in the lower portion of the display device is prevented.
    Type: Application
    Filed: October 9, 2007
    Publication date: April 10, 2008
    Inventors: Jae Han Lee, Sun Kyu Son, Myong Bin Lim, In Yong Hwang, Ock Jin Kim
  • Publication number: 20080062666
    Abstract: A signal transfer member for a liquid crystal display (LCD) apparatus includes a power line for receiving power from an external source and for driving a semiconductor chip disposed on the transfer member or the display apparatus. The power line is bent so as to incorporate a serpentine structure, which enables the length of the power line to be easily adjusted and results in the line being longer than a power line formed with a relatively straight structure. Accordingly, the length of the power line can be adjusted to take into account the respective impedances of the chip and the external source so as to suppress electromagnetic waves in the power line. This prevents the creation of noise, distortion of signals, damage to the semiconductor chip, and disconnection of the input interconnection thereof that are caused by the electromagnetic waves, so that product yields are thereby improved.
    Type: Application
    Filed: August 13, 2007
    Publication date: March 13, 2008
    Inventors: Myong-Bin Lim, Jae-Han Lee, Sun-Kyu Son, In-Yong Hwang
  • Publication number: 20080030490
    Abstract: A signal generating circuit for a liquid crystal display (LCD) includes circuitry adapted to receive a gate clock signal and an output enable signal. The gate clock signal is a combination of a gate-on signal and a gate-off signal and the output enable signal is operable to adjust the width of the gate-on signal. The signal generating circuit adjusts the output enable signal such that a falling edge of the output enable signal overlaps a rising edge of the gate clock signal and thereby delays the gate clock signal for a selected amount of time.
    Type: Application
    Filed: July 24, 2007
    Publication date: February 7, 2008
    Inventors: Sun-kyu Son, Myong-bin Lim, In-yong Hwang, Jae-han Lee, Ock-jin Kim
  • Patent number: 6673706
    Abstract: A photoresist pattern is formed, without being exposed, by using photoresist having a residual layer proportion characteristic by which the photoresist dissolves at a suitable rate in a developing solution. First, a target layer to be patterned and a photoresist layer are sequentially formed on a substrate having a pattern that defines a step on the substrate. Some of the photoresist layer is treated with the developing solution, to thereby form a photoresist pattern whose upper surface is situated beneath the step and hence, exposes part of the target layer. Next, the exposed part of the target layer, and the photoresist pattern are removed. A silicidation process may be carried out thereafter on the area(s) from which the target layer has been removed. The method is relatively simple because it does not involve an exposure process. Furthermore, the method can be used to manufacture devices having very fine linewidths, i.e.
    Type: Grant
    Filed: December 21, 2001
    Date of Patent: January 6, 2004
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Ji-yong Yoo, Dae-youp Lee, Jeung-woo Lee, Suk-joo Lee, Jae-han Lee
  • Patent number: 6620690
    Abstract: A method of fabricating a flash memory device uses a self-aligned non-exposure pattern formation process. A conductive layer and an oxidation-blocking layer are formed on a stepped pattern including a floating gate pattern and an inter-gate insulating layer pattern such that the conductive layer and the oxidation-blocking layer conform to the stepped pattern. A photoresist layer is formed on the oxidation-blocking layer such that the photoresist layer has an upper surface situated above the oxidation-blocking layer. A portion of the photoresist layer is dissolved, without having photo-exposed the photoresist layer, by soaking the photoresist layer in developing solution. This soaking alone, or supplemented with an etch back process, is carried out until the upper surface of the photoresist layer is situated below the upper surface of the oxidation-blocking layer on the stepped pattern. The resulting photoresist pattern exposes that part of the oxidation-blocking layer on the stepped pattern.
    Type: Grant
    Filed: July 17, 2002
    Date of Patent: September 16, 2003
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jae-han Lee, Dae-youp Lee
  • Publication number: 20030022439
    Abstract: A method of fabricating a flash memory device uses a self-aligned non-exposure pattern formation process. A conductive layer and an oxidation-blocking layer are formed on a stepped pattern including a floating gate pattern and an inter-gate insulating layer pattern such that the conductive layer and the oxidation-blocking layer conform to the stepped pattern. A photoresist layer is formed on the oxidation-blocking layer such that the photoresist layer has an upper surface situated above the oxidation-blocking layer. A portion of the photoresist layer is dissolved, without having exposed the photoresist layer, by soaking the photoresist layer in developing solution. This soaking alone, or supplemented with an etch back process, is carried out until the upper surface of the photoresist layer is situated below the upper surface of the oxidation-blocking layer on the stepped pattern. The resulting photoresist pattern exposes that part of the oxidation-blocking layer on the stepped pattern.
    Type: Application
    Filed: July 17, 2002
    Publication date: January 30, 2003
    Inventors: Jae-han Lee, Dae-youp Lee
  • Publication number: 20020119403
    Abstract: A photoresist pattern is formed, without being exposed, by using photoresist having a residual layer proportion characteristic by which the photoresist dissolves at a suitable rate in a developing solution. First, a target layer to be patterned and a photoresist layer are sequentially formed on a substrate having a pattern that defines a step on the substrate. Some of the photoresist layer is treated with the developing solution, to thereby form a photoresist pattern whose upper surface is situated beneath the step and hence, exposes part of the target layer. Next, the exposed part of the target layer, and the photoresist pattern are removed. A silicidation process may be carried out thereafter on the area(s) from which the target layer has been removed. The method is relatively simple because it does not involve an exposure process. Furthermore, the method can be used to manufacture devices having very fine linewidths, i.e.
    Type: Application
    Filed: December 21, 2001
    Publication date: August 29, 2002
    Inventors: Ji-Yong Yoo, Dae-Youp Lee, Jeung-Woo Lee, Suk-Joo Lee, Jae-Han Lee
  • Patent number: 6062669
    Abstract: A method for detecting ink cartridge status, corresponding to ink cartridge IDs including the steps of displaying the state information of the cartridge, identified by a cartridge ID entered by a user on the monitor, and summing the ink consumption of the cartridge during printing.
    Type: Grant
    Filed: September 22, 1997
    Date of Patent: May 16, 2000
    Assignee: SamSung Electronics Co., Ltd.
    Inventor: Jae-Han Lee
  • Patent number: 5949446
    Abstract: A technique for resetting the time for driving a print head of an ink-jet printer, based on different absorptivities of papers to be printed by the ink-jet printer, optimizes the amount of ink emerging from nozzles of the head resulting in a high print resolution. The technique includes: displaying different paper types on a display; selecting one type of paper out of the displayed paper types; obtaining a head driving time corresponding to the selected paper type from a look-up table prestored in a memory device and changing the predesignated head driving time to the obtained head driving time; and printing data with the changed head driving time.
    Type: Grant
    Filed: March 17, 1997
    Date of Patent: September 7, 1999
    Assignee: SamSung Electronics Co., Ltd.
    Inventor: Jae-Han Lee
  • Patent number: 5903285
    Abstract: An ink cartridge detection circuit and method for detecting whether an ink cartridge is mounted in an ink jet recording apparatus. The ink cartridge circuit includes a driver for driving a corresponding nozzle by applying a driving power supply voltage to a corresponding heating element; a voltage detector connected to the heating elements for detecting a voltage level of the driving power supply voltage dropped by means of driving of the heating elements; and a controller for driving one or more of the heating elements through the driver and for comparing a voltage level detected by the voltage detector with a preset reference voltage level in order to detect whether an ink cartridge is mounted on a carriage of the ink jet recording apparatus.
    Type: Grant
    Filed: June 19, 1996
    Date of Patent: May 11, 1999
    Assignee: SamSung Electronics Co., Ltd.
    Inventors: Young-Bok Ju, Jae-Han Lee
  • Patent number: 5881507
    Abstract: A seismic isolation bearing device is disclosed in which a laminated elastic rubber-steel bearing adapted to isolate horizontal seismic loading cooperates with a vertical isolation device employing a compression spring, or equivalent device, effective for isolating vertical seismic loadings whereby a three dimensional seismic isolation device is effective to isolate both vertical and horizontal seismic loadings to insure the structural integrity of a superstructure against damage induced by seismic events. The isolation device formed of an isolation cylinder fixed to the structure, with an upper fixing plate vertically movable within the cylinder. A plurality of steel balls being disposed within a space formed between the perimeter of the upper fixing plate and the interior wall of the isolation cylinder. The balls facilitating the guided relative vertical movement between the upper fixing plate and the isolation cylinder.
    Type: Grant
    Filed: October 30, 1996
    Date of Patent: March 16, 1999
    Assignees: Korea Atomic Energy Research Institute, Korea Electric Power Corporation
    Inventors: Bong Yoo, Gyeong-Hoi Koo, Jae-Han Lee, Mann Cho
  • Patent number: 5805182
    Abstract: A method for cleaning nozzles in an ink jet printer includes the steps of: ejecting ink from a first plurality of the nozzles that are not frequently used in printing every first period; and ejecting ink from a second plurality of the nozzles which are frequently used in printing every second period, wherein the first period is different from the second period.
    Type: Grant
    Filed: February 28, 1996
    Date of Patent: September 8, 1998
    Assignee: SamSung Electronics Co., Ltd.
    Inventor: Jae-Han Lee