Patents by Inventor Hyoung-Rae Lee

Hyoung-Rae 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: 7898536
    Abstract: A display apparatus and a method of driving the same in which a selector outputs one of two high gamma values and one of two low gamma values in one frame unit in response to a selection signal. A gamma reference voltage generator outputs a high gamma reference voltage corresponding to the selected high gamma value and a low gamma reference voltage corresponding to the selected low gamma value. A data driving circuit outputs a first data voltage based on the high gamma reference voltage during a first active period and outputs a second data voltage based on the low gamma reference voltage during a second active period. Thus, a display panel may display an image using data voltages corresponding to different gamma curves in one frame unit, thereby improving visibility of the display apparatus.
    Type: Grant
    Filed: September 25, 2007
    Date of Patent: March 1, 2011
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Yong-Jin Shin, Hyoung-Rae Lee
  • Publication number: 20100045588
    Abstract: A timing control apparatus includes a memory part, a multi-timing control part, and a power supply part. The memory part stores data. The multi-timing control part includes a plurality of timing controllers that sequentially read the stored data from the memory part in response to a reset signal, and outputs a power control signal that controls an output timing of a power. The power supply part outputs the power in response to the power control signal.
    Type: Application
    Filed: April 8, 2009
    Publication date: February 25, 2010
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Hyoung-Rae LEE, Jae-Ho Jung, Sang-Won Lee, Duk-Hwan Kang, Tae-Gwang Jung, Ri-Na You
  • Publication number: 20090146942
    Abstract: A backlight apparatus includes a plurality of light source parts, a plurality of transformers and a scanning control part. The light source parts include at least one light source, respectively. The transformers provide the light source parts with power, respectively. The scanning control part drives a first transformer based on a vertical synchronization signal Vsync provided from an external device and sequentially driving at least one of remaining transformers based on a clock signal provided from the external device. Therefore, a light emitting time between light source groups may be made uniform even though an operating frequency corresponding to images is varied, so that a response time of a moving picture may be realized.
    Type: Application
    Filed: July 15, 2008
    Publication date: June 11, 2009
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Hyoung-Rae LEE, Sang-Won LEE, Ri-Na YOU
  • Publication number: 20090040156
    Abstract: A display device and a method for driving the same, in which the display device includes a storage unit for storing a plurality of reference gradation code data corresponding to a plurality of gradations, and some of variable gradation code data corresponding to some of the gradation points of the plurality of gradations; a signal controller for converting gradations of original pixel data into gradation code signals of different levels using the plurality of reference gradation code data or both the plurality of reference gradation code data and the some variable gradation code data according to an operation mode; a data driver for converting the gradation code signal into an analog pixel data signal; and an image display unit for displaying an image according to the pixel data signal. The original pixel data are converted into gradation code signals of different levels according to an image display mode, thereby preventing luminance degradation and flicker generation due to the image display mode.
    Type: Application
    Filed: June 3, 2008
    Publication date: February 12, 2009
    Inventors: Bong-Ju Jun, Bong-Im Park, Hyoung-Rae Lee, Jae-Won Jeong, Yong-Jun Choi
  • Publication number: 20080122814
    Abstract: A display apparatus and a method of driving the same in which a selector outputs one of two high gamma values and one of two low gamma values in one frame unit in response to a selection signal. A gamma reference voltage generator outputs a high gamma reference voltage corresponding to the selected high gamma value and a low gamma reference voltage corresponding to the selected low gamma value. A data driving circuit outputs a first data voltage based on the high gamma reference voltage during a first active period and outputs a second data voltage based on the low gamma reference voltage during a second active period. Thus, a display panel may display an image using data voltages corresponding to different gamma curves in one frame unit, thereby improving visibility of the display apparatus.
    Type: Application
    Filed: September 25, 2007
    Publication date: May 29, 2008
    Inventors: Yong-Jin SHIN, Hyoung-Rae Lee