Patents by Inventor Jeong-Hwan Lee

Jeong-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).

  • Patent number: 7826003
    Abstract: Disclosed are a back light assembly for preventing discoloration and deformation caused by heat generated from a lamp, and a liquid crystal display device for displaying an enhanced image. The back light assembly includes a receiving container, a lamp, a glass substrate and a diffuser. The receiving container has a receiving space. The lamp for generating the light is disposed in the receiving space. The glass substrate is interposed between the liquid crystal display panel and the lamp. The diffuser diffuses the light generated by the lamp so as to unify a luminance distribution of the liquid crystal display panel. The liquid crystal display device includes the back light assembly.
    Type: Grant
    Filed: January 14, 2008
    Date of Patent: November 2, 2010
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jeong-Hwan Lee, Keun-Woo Lee, Jong-Dae Park, Jae-Ho Jung, Tae-Jin Lee, Chang-Young Bang
  • Patent number: 7771078
    Abstract: There is provided a lamp fixing holder. A lamp fixing holder for fixes a lamp to a receiving container. The lamp provides a liquid crystal display panel with light. The lamp includes a first portion of a face and a second portion of the face. The light emitted from the first portion of the face advances toward the liquid crystal display panel. The lamp fixing holder comprises a lamp fixing body and a fixing member. The lamp fixing body holds a third portion of the face of the lamp. The second portion includes the third portion. The fixing member fixes the lamp fixing body to the receiving container. The lamp fixing holder according to the present invention fixes the lamp so that the lamp does not sway, while minimizing an amount of light that is shielded by the lamp fixing holder.
    Type: Grant
    Filed: July 23, 2007
    Date of Patent: August 10, 2010
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jeong-Hwan Lee, Jong-Dae Park, Yong-Il Kim, Chang-Young Bang, Tae-Jin Lee, Yong-Seok Choi, Jae-Ho Jung, Keun-Woo Lee, Jae-Sang Lee
  • Publication number: 20100182489
    Abstract: Disclosed are an auto focus (AF) module and a photographing apparatus employing the same. The AF module may include an AF sensor having a plurality of AF pixels and a controller. The controller receives an information regarding the amount of light respectively received by the light receiving elements of one or more of the plurality of AF pixels from the one or more of the plurality of AF pixels. The controller of the AF sensor may be configured to control the operations, e.g., the light exposure timing, of the plurality of AF pixels based on the information received from the AF pixels.
    Type: Application
    Filed: December 7, 2009
    Publication date: July 22, 2010
    Applicants: SAMSUNG ELECTRONICS CO., LTD., INDUSTRY-ACADEMIC COOPERATION FOUNDATION, YONSET UNIVERSITY
    Inventors: Il-Do KIM, Ki-Sub Song, Gun-Hee Han, Ji-Min Cheon, Jeong-Hwan Lee
  • Publication number: 20100151876
    Abstract: A technology for inter-cell interference control is provided. In one general aspect, the inter-cell interference may be controlled by resource allocation scheduling or power management. A cell may be divided into a plurality of regions. A constant available resource band and a selectively available band are allocated to each region. Each of the allocated resource bands is assigned with an interference characteristic. The resource allocation scheduling and the power management are performed according to the resources allocated to the respective regions and the interference characteristics assigned to the respective resources.
    Type: Application
    Filed: December 11, 2009
    Publication date: June 17, 2010
    Applicants: Electronics and Telecommunications Research Institute, Industry Foundation of Chonnam National University
    Inventors: Soon-gi PARK, Yeon-seung SHIN, Hyung-sub KIM, Yeong-jin KIM, In-tae HWANG, Gil-sang YOON, Jeong-hwan LEE
  • Patent number: 7731406
    Abstract: A backlight assembly and an LCD having the same are disclosed to prevent wrinklings of optical sheets due to close contact of optical sheets or prism sheets. The backlight assembly includes multiple optical sheets disposed between a light guiding plate and a display unit, for the diffusion of light, collection of light and securing of horizontal viewing angle. The front surface or the rear surface of each of the optical sheets each has an embossing structure or a matte structure to decrease a contact area between the multiple optical sheets and to minimize frictions.
    Type: Grant
    Filed: April 25, 2007
    Date of Patent: June 8, 2010
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Jeong-Hwan Lee
  • Patent number: 7710513
    Abstract: A method for illuminating a liquid crystal display device, a back-light assembly for performing the same and a liquid crystal display device using the same can improve the front luminance and production yield. Lights from a lamp is incident to a LCD panel side, which are then primarily diffused for a uniformity of the luminous flux of the incident lights. The luminous flux of the primarily diffused lights is condensed with respect to a first orientation component on a plane in parallel with the LCD panel, and then partially and secondarily diffused for extending a view angle of pixels of the LCD panel. After the luminous flux of the secondarily diffused lights is condensed with respect to a second orientation component perpendicular to the first orientation on the parallel plane, the condensed lights are illuminated onto the LCD panel.
    Type: Grant
    Filed: May 22, 2008
    Date of Patent: May 4, 2010
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jeong-Hwan Lee, Ik-Soo Lee, Kyu-Seok Kim, Jong-Ho Won
  • Patent number: 7679827
    Abstract: An integral optical plate includes a convex lens plate, a microlens sheet and an adhesion element. The convex lens plate includes a first light incident surface into which light is incident and a first light-exiting surface disposed opposite the first light incident surface and on which a convex tens pattern is formed. The microlens sheet is disposed on the first light-exiting surface, and includes a microlens pattern. The adhesion element is disposed between the convex lens plate and the microlens sheet to combine the convex lens plate with the microlens sheet. The convex tens pattern includes a plurality of convex in lenses having a stripe shape extending lengthwise along the convex lens plate.
    Type: Grant
    Filed: June 19, 2007
    Date of Patent: March 16, 2010
    Assignee: Samsung Electronics Co., Ltd
    Inventors: Jheen-Hyeok Park, Dong-Hoon Kim, Jin-Sung Choi, Tae-Seok Jang, Jeong-Hwan Lee
  • Publication number: 20100045645
    Abstract: A backlight assembly has a lamp driving device for driving external electrode fluorescent lamps (EEFLs) parallel connected each other. The lamp driving device includes a power switch transistor, a diode, an inverter and a PWM controller. The transistor converts external DC power signal into pulse power signal based on switching signal, the diode prevents rush current from flowing into the transistor. The inverter converts the pulse power signal into AC power signal, raises voltage level of the AC power signal, and provides the lamps with the raised AC power signal. The PWM controller is activated by external on/off signal to provide the transistor with the switching signal so as to regulate voltage level of the AC power signal. The EEFLs can maintain a constant current level, and the backlight assembly can have characteristics of uniform luminance, high luminance and high heat efficiency.
    Type: Application
    Filed: November 2, 2009
    Publication date: February 25, 2010
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Hyeong-Suk YOO, Sung-Chul KANG, Jeong-Hwan LEE, Keun-Woo LEE, Moon-Sik KANG
  • Patent number: 7649591
    Abstract: In an LCD apparatus having an optical member, the optical member has a base body having a light incident surface and a light emitting surface faced the light incident surface. A first resin layer is formed on the light emitting surface and a light diffusing pattern is uniformly formed on the first resin layer so as to diffuse a first light and emit a second light. Accordingly, the LCD apparatus can improve display quality and can be fabricated in low-cost manufacture. Also, since the light diffusing pattern is formed with a curable material, the light diffusing pattern can have various shapes and superior reproducibility.
    Type: Grant
    Filed: May 8, 2008
    Date of Patent: January 19, 2010
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jeong-Hwan Lee, Jae-Ho Jung, Sang-Hyuck Yoon, Jong-Dae Park, Kyu-Seok Kim
  • Patent number: 7629838
    Abstract: A ratio-independent switched capacitor amplifier includes a first sampling circuit configured to sample a first input voltage as a first sampling voltage and to double a level of the first sampling voltage during an interval in which the first input voltage is cut off; a second sampling circuit configured to sample a second input voltage as a second sampling voltage and to double a level of the second sampling voltage during an interval in which the second input voltage is cut off; and a differential amplifier circuit configured to output a difference between the first sampling voltage and the second sampling voltage.
    Type: Grant
    Filed: October 17, 2007
    Date of Patent: December 8, 2009
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Seung-Hyun Lim, Jeong-Hwan Lee, Gun-Hee Han, Seog-Heon Ham
  • Patent number: 7618347
    Abstract: In a training control method using biofeedback, and an apparatus using the method, the method includes setting a target exercise zone for a user based on a bio-signal from the user, the target exercise zone including a range of indices and comparing a current index obtained from the bio-signal with the target exercise zone in time units in an exercise training mode and providing at least one of positive biofeedback information, negative biofeedback information, and a warning message to the user according to a result of the comparison.
    Type: Grant
    Filed: September 7, 2004
    Date of Patent: November 17, 2009
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Hyung-sok Yeo, Jae-chan Park, Kun-soo Shin, Kyung-ho Kim, Jeong-hwan Lee, Youn-ho Kim
  • Publication number: 20090240305
    Abstract: An apparatus, method, and medium for generating electrical stimulation, including an electromyogram detector detecting an electromyographic signal of a body, a fatigue index calculator calculating a fatigue index indicating a degree of muscle fatigue by converting the electromyographic signal detected by the electromyogram detector during a predetermined time unit into a frequency-domain electromyographic signal, and an electrical stimulation signal generator adjusting an electrical stimulation signal according to the calculated fatigue index and generating the electrical stimulation signal.
    Type: Application
    Filed: March 4, 2009
    Publication date: September 24, 2009
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Jeong-hwan Lee, Kun-soo Shin, Wan-taek Han, Hyung-sok Yeo, Jin-sang Whang
  • Patent number: 7535398
    Abstract: An analog-to-digital converter (ADC) includes first and second circuits, a differential amplifier, a comparator and a digital-to-analog converter (DAC). The first circuit samples a reset voltage, amplifies the sampled reset voltage, and subtracts a first reference voltage from the amplified reset voltage to produce a first difference. The second circuit samples a signal voltage, amplifies the sampled signal voltage, and subtracts a second reference voltage from the amplified signal voltage to produce a second difference. The differential amplifier produces a third difference based a comparison of the first and second differences from the first and second circuits. The comparator compares an output of the differential amplifier with at least one predetermined comparison voltage and outputs a comparison result as a digital value. The DAC is connected to the first and second circuits and the comparator, and controls the first and second reference voltages in response to the digital value.
    Type: Grant
    Filed: October 16, 2007
    Date of Patent: May 19, 2009
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Seung-Hyun Lim, Jeong-Hwan Lee, Gun-Hee Han, Seog-Hoon Ham
  • Patent number: 7528915
    Abstract: A display device comprises an optical module, a light source unit, a container and a display panel. The optical module comprises at least one optical member and a transparent adhesion member combined with the optical member. The optical member has a first modulus of elasticity, and the transparent adhesion member has a second modulus of elasticity that is substantially identical to the first modulus of elasticity. The light source unit is disposed in a light providing region of the display device to generate a light. The container receives the light source unit and the optical module. The display panel is received in the container and disposed in a display region of the display device. The display panel displays an image based on a light passing through the optical module.
    Type: Grant
    Filed: September 1, 2005
    Date of Patent: May 5, 2009
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jin-Sung Choi, Jheen-Hyeok Park, Dong-Hoon Kim, Jong-Dae Park, Jin-Mi Jung, Jeong-Hwan Lee
  • Patent number: 7522637
    Abstract: A dynamic resource allocation method in an OFDMA system is provided. A base station determines if each of a plurality of SSs supports subchannel-based dynamic resource allocation. If an SS supports the subchannel-based dynamic resource allocation, the base station allocates resources to the SS on a subchannel basis. If the SS does not support the subchannel-based dynamic resource allocation, the base station allocates resources to the SS on a burst basis.
    Type: Grant
    Filed: July 11, 2005
    Date of Patent: April 21, 2009
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Il-Whan Kim, Sang-Boh Yun, Sung-Hyun Cho, Won-Hyoung Park, Chung-Gu Kang, Jeong-Hwan Lee
  • Patent number: 7478942
    Abstract: A light guide plate includes a light incident surface for receiving light, first and second light emission surfaces for emitting light at a first light emission angle with respect to the first and second light emission surfaces, and a light reflection pattern formed on the first light emission surface, for reflecting the light toward the second light emission surface. The reflected light from the light reflection pattern exits the second light emission surface at a second light emission angle with respect to the second light emission surface, and the second light emission angle is larger than the first light emission angle. The light reflection pattern includes multiple dots each having a prim pattern on their surface and light reflecting surfaces elongated in a selected direction. The adjacent light reflecting surfaces meet each other at their elongated edges to form a prism shape.
    Type: Grant
    Filed: August 26, 2003
    Date of Patent: January 20, 2009
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Dong-Hoon Kim, Jong-Dae Park, Kyu-Seok Kim, Jeong-Hwan Lee, Jae-Ho Jung, Man-Suk Kim, Chul-Goo Chi, O-Yong Jeong
  • Publication number: 20090015752
    Abstract: A method for illuminating a liquid crystal display device, a back-light assembly for performing the same and a liquid crystal display device using the same can improve the front luminance and production yield. Lights from a lamp is incident to a LCD panel side, which are then primarily diffused for a uniformity of the luminous flux of the incident lights. The luminous flux of the primarily diffused lights is condensed with respect to a first orientation component on a plane in parallel with the LCD panel, and then partially and secondarily diffused for extending a view angle of pixels of the LCD panel. After the luminous flux of the secondarily diffused lights is condensed with respect to a second orientation component perpendicular to the first orientation on the parallel plane, the condensed lights are illuminated onto the LCD panel.
    Type: Application
    Filed: May 22, 2008
    Publication date: January 15, 2009
    Inventors: Jeong-Hwan Lee, Ik-Soo Lee, Kyu-Seok Kim, Jong-Ho Won
  • Publication number: 20080278949
    Abstract: An optical sheet includes a base film, a plurality of prism patterns and a plurality of first embossing patterns. The prism patterns are formed on an upper surface of the base film. Each of the prism patterns has the shape of a trigonal prism and includes a first inclined surface and a second inclined surface. The first and second inclined surfaces are inclined with respect to the upper surface of the base film and meet each other at a peak portion. First embossing patterns are formed at the peak portion.
    Type: Application
    Filed: May 8, 2008
    Publication date: November 13, 2008
    Inventors: Dong-Hoon Kim, Jin-Sung Choi, Jeong-Hwan Lee, Seung-Mo Kim
  • Publication number: 20080263726
    Abstract: The present invention relates to SVP protein which controls the flowering time of plants originating from Arabidopsis, a gene encoding SVP protein, a recombinant vector comprising said gene, a plant transformed with said recombinant vector, a method of controlling flowering time of plants by using said gene, and a method of searching a protein or a gene which controls the flowering time of plants by using said SVP protein or said gene encoding the same.
    Type: Application
    Filed: February 4, 2008
    Publication date: October 23, 2008
    Applicant: Seoul National University Industry Foundation
    Inventors: Jong Seob Lee, Jeong Hwan Lee, Seong Jeon Yoo, Soo Hyun Park, Il doo Hwang, Ji Hoon Ahn, Yang Do Choi
  • Publication number: 20080212331
    Abstract: In an LCD apparatus having an optical member, the optical member has a base body having a light incident surface and a light emitting surface faced the light incident surface. A first resin layer is formed on the light emitting surface and a light diffusing pattern is uniformly formed on the first resin layer so as to diffuse a first light and emit a second light. Accordingly, the LCD apparatus can improve display quality and can be fabricated in low-cost manufacture. Also, since the light diffusing pattern is formed with a curable material, the light diffusing pattern can have various shapes and superior reproducibility.
    Type: Application
    Filed: May 8, 2008
    Publication date: September 4, 2008
    Inventors: Jeong-Hwan LEE, Jae-Ho Jung, Sang-Hyuck Yoon, Jong-Dae Park, Kyu-Seok Kim