Patents by Inventor Hyun-Kyu Jeon

Hyun-Kyu Jeon 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: 20160005374
    Abstract: Provided are an output buffer circuit capable of outputting a pair of output signals having different polarities and a display driving circuit including the same. The output buffer circuit includes output buffers which output a positive output signal and a negative output signal in response to a pair of input signals having different polarities. As the output buffers are driven while sharing a common voltage, the output buffer circuit satisfies a low-power specification, and has a stable electrical characteristic.
    Type: Application
    Filed: July 7, 2015
    Publication date: January 7, 2016
    Inventors: Young Bok KIM, Young Tae KIM, Hyun Kyu JEON, Joon Ho NA
  • Publication number: 20150091618
    Abstract: A sample and hold circuit may include: a main sample and hold circuit configured to sample and hold pixel information of an organic light emitting diode (OLED) cell, and output a first output signal; and a dummy sample and hold circuit configured to sample and hold a reference voltage in synchronization with the main sample and hold circuit, and output a second output signal for offsetting a switching noise signal contained in the first output signal.
    Type: Application
    Filed: September 29, 2014
    Publication date: April 2, 2015
    Inventors: Kyung Jik MIN, Hyun Kyu Jeon, Yong Ik Jung, Hyun Ho Cho, Young Bok Kim
  • Publication number: 20150091888
    Abstract: A source driver may include: a transmission line configured to transmit an output signal of a sample and hold circuit which stores pixel information of an organic light emitting diode (OLED) cell; an amplifier is formed a first offset voltage at an input terminal by a parasitic capacitor of the transmission line; and an offset voltage storage unit configured to store the first offset voltage outputted from the amplifier as a second offset voltage while the transmission of the output signal of the sample and hold circuit through the transmission line is turned off, and offset the first offset voltage by providing the second offset voltage to the input terminal of the amplifier when the output signal of the sample and hold circuit is transmitted through the transmission line.
    Type: Application
    Filed: September 29, 2014
    Publication date: April 2, 2015
    Inventors: Kyung Jik MIN, Hyun Kyu Jeon, Yong Ik Jung, Hyun Ho Cho, Young Bok Kim
  • Publication number: 20150062110
    Abstract: The present invention relates to a source driver of a display apparatus, and relates to a source driver for display apparatus insensitive to power noise, which forcibly decides an internal operation state as normality in a specific period including a power noise generation period and operates insensitively to the power noise. Accordingly, the display apparatus can normally output an image voltage even though power noise occurs.
    Type: Application
    Filed: March 15, 2013
    Publication date: March 5, 2015
    Inventors: Kwang Il Oh, Yun Tack Han, Jung II Seo, Yong Ik Jung, Hyun Kyu Jeon
  • Patent number: 8947412
    Abstract: A display driving system includes a timing control section having an LVDS receiving unit for receiving data signals, a data processing unit for temporarily storing the data signals, processing the data signals and outputting processed data signals, a timing generation unit for generating clock signals and timing control signals, and a transmission unit for transmitting the data signals; and a panel driving section having row driving units for sequentially emitting gate signals toward a display panel and column driving units for receiving the signals transmitted through signal lines from the transmission unit and supplying the received signals to the display panel. In the timing control section, the transmission unit has driving parts which embed the clock signals between the data signals at the same level and generate and output single level transmission data.
    Type: Grant
    Filed: October 7, 2009
    Date of Patent: February 3, 2015
    Assignee: Silicon Works Co., Ltd.
    Inventors: Hyun-Kyu Jeon, Yong-Hwan Moon
  • Publication number: 20150015473
    Abstract: Disclosed are a display driving circuit and a display device. The display driving circuit includes an output buffer unit that outputs a pair of pixel signals, an output switch unit that directly transfers the pair of pixel signals to a pair of output lines or transfers the pair of pixel signals to the pair of output lines such that the pair of pixel signals cross each other in correspondence with repetitive panel charging/discharging periods, and a charge sharing switch unit that controls charge sharing of the pair of output lines in correspondence with a charge sharing period between the panel charging/discharging periods, and provides a variable connection resistance value for the charge sharing. Consequently, power consumption and heat generation of the display driving circuit are reduced.
    Type: Application
    Filed: July 10, 2014
    Publication date: January 15, 2015
    Inventors: Hark Jin JUNG, Ki Sun JUNG, Hyun Ho CHO, Joon Ho NA, Hyun Kyu JEON, Yong Icc JUNG
  • Publication number: 20150009202
    Abstract: Disclosed is a display driving circuit including an output buffer unit that is connected to a common voltage and first and second voltages and outputs a pair of pixel signals; an output switch that directly connects the pair of pixel signals to a pair of output lines or connects the pair of pixel signals to the pair of output lines such that they cross each other; and a pre-charging unit that charges the pair of output lines by using pre-charging voltages. Consequently, power consumption and heat generation of the display driving circuit are reduced.
    Type: Application
    Filed: July 8, 2014
    Publication date: January 8, 2015
    Inventors: Hyun Ho CHO, Joon Ho NA, Hyun Kyu JEON, Yong Icc JUNG
  • Patent number: 8884934
    Abstract: A display driving system using single level data transmission with embedded clock signals. The display driving system is configured to embed a clock signal of the same level between data signals and transmit these signals as a single level signal, wherein a cycle at which clock signals are embedded is controlled and a data format is constructed such that a control data transmission step can be extended over 2 words.
    Type: Grant
    Filed: September 1, 2010
    Date of Patent: November 11, 2014
    Assignee: Silicon Works Co., Ltd.
    Inventors: Hyun-Kyu Jeon, Yong-Hwan Moon
  • Publication number: 20140292742
    Abstract: Disclosed is a source driver for a display apparatus which is insensitive to power noise, and a configuration of filtering an influence of power noise, which is introduced from an exterior of the source driver or occurs in an interior thereof, to an operation of the source driver. The present invention is applied to the case of receiving a clock signal and a data signal through the single signal line, and is embodied such that a source driver for driving a display apparatus for achieving a high speed operation and a large screen has a characteristic insensitive to power noise.
    Type: Application
    Filed: March 25, 2014
    Publication date: October 2, 2014
    Applicant: SILICON WORKS CO., LTD.
    Inventors: Kwang Il OH, Yun Tack HAN, Hyun Kyu JEON
  • Patent number: 8775879
    Abstract: Embodiments of the present invention provide a method and apparatus for transmitting data between a timing controller and a source driver. In some embodiments, the method includes a bit error rate test (BERT) function for sensing an error rate in real time when data is transmitted and received between the timing controller and the source driver.
    Type: Grant
    Filed: December 21, 2011
    Date of Patent: July 8, 2014
    Assignee: Silicon Works Co., Ltd.
    Inventors: Kwang Il Oh, Yun Tack Han, Soo Woo Kim, Jung Hwan Choi, Hyun Kyu Jeon, Joon Ho Na
  • Patent number: 8611484
    Abstract: A receiver for receiving an input signal (a clock-embedded data (CED) signal), in which a clock signal is periodically embedded between data signals, includes a clock recovery unit configured to recover and output the clock signal and a serial-to-parallel converter configured to recover and output a data signal. The input signal (the CED signal) comprises a single level signal in which the clock signal is periodically embedded between the data signals at the same level. The clock recovery unit is configured based on a delay locked loop (DLL) without using an internal oscillator for generating a reference clock signal.
    Type: Grant
    Filed: February 9, 2010
    Date of Patent: December 17, 2013
    Assignee: Silicon Works Co., Ltd.
    Inventors: Hyun-Kyu Jeon, Yong-Hwan Moon
  • Patent number: 8493373
    Abstract: A display driving system includes a timing controller configured to receive a data signal composed of image data and generate a control signal such as a clock signal; an interface configured to transmit the data signal and the control signal to a plurality of data drivers; the data drivers configured to receive the data signal and the control signal through the interface and supply received signals to a display panel to display an image; and a monitoring unit configured to feed back LOCK signals indicative of state information of the data drivers to the timing controller such that the data drivers can be monitored.
    Type: Grant
    Filed: March 1, 2010
    Date of Patent: July 23, 2013
    Assignee: Silicon Works Co., Ltd.
    Inventors: Hyun-Kyu Jeon, Yong-Hwan Moon
  • Patent number: 8329191
    Abstract: The present invention relates to three-branched PEG-G-CSF conjugate of general formula (1) in which the bonding ratio of three-branched polyethylene glycol (PEG) and G-CSF is 1:1 (mol/mol), wherein PEG has an average molecular weight of from 200 to 45,000 daltons; a pharmaceutical composition comprising the same, and a preparing method thereof.
    Type: Grant
    Filed: November 22, 2006
    Date of Patent: December 11, 2012
    Assignee: Dong-A-Pharm. Co., Ltd.
    Inventors: Yeong-Woo Jo, Won-Young Yoo, Hyun-Kyu Jeon, Yun-Kyu Choi, Hye-In Jang, Byong-Moon Kim, Sung-Hee Lee, Soo-Hyung Kang, Moo-Hi Yoo
  • Publication number: 20120166896
    Abstract: Disclosed is a method and apparatus for transmitting data between a timing controller and a source driver, and more particularly, a data transmission method and apparatus between a timing controller and a source driver, which has a bit error rate test (BERT) function for sensing an error rate in real time when data is transmitted and received between the timing controller and the source driver.
    Type: Application
    Filed: December 21, 2011
    Publication date: June 28, 2012
    Applicant: SILICON WORKS CO., LTD
    Inventors: Kwang-Il Oh, Yun-Tack Han, Soo-Woo Kim, Jung-Hwan Choi, Hyun-Kyu Jeon, Joon-Ho Na
  • Publication number: 20110286562
    Abstract: A receiver for receiving an input signal (a clock-embedded data (CED) signal), in which a clock signal is periodically embedded between data signals, includes a clock recovery unit configured to recover and output the clock signal and a serial-to-parallel converter configured to recover and output a data signal. The input signal (the CED signal) comprises a single level signal in which the clock signal is periodically embedded between the data signals at the same level. The clock recovery unit is configured based on a delay locked loop (DLL) without using an internal oscillator for generating a reference clock signal.
    Type: Application
    Filed: February 9, 2010
    Publication date: November 24, 2011
    Applicant: SILICON WORKS CO., LTD
    Inventors: Hyun-Kyu Jeon, Yong-Hwan Moon
  • Publication number: 20110242066
    Abstract: A display driving system using single level data transmission with embedded clock signals. The display driving system is configured to embed a clock signal of the same level between data signals and transmit these signals as a single level signal, wherein a cycle at which clock signals are embedded is controlled and a data format is constructed such that a control data transmission step can be extended over 2 words.
    Type: Application
    Filed: September 1, 2010
    Publication date: October 6, 2011
    Applicant: SILICON WORKS CO., LTD
    Inventors: Hyun-Kyu JEON, Yong-Hwan MOON
  • Publication number: 20110181558
    Abstract: A display driving system includes a timing control section having an LVDS receiving unit for receiving data signals, a data processing unit for temporarily storing the data signals, processing the data signals and outputting processed data signals, a timing generation unit for generating clock signals and timing control signals, and a transmission unit for transmitting the data signals; and a panel driving section having row driving units for sequentially emitting gate signals toward a display panel and column driving units for receiving the signals transmitted through signal lines from the transmission unit and supplying the received signals to the display panel. In the timing control section, the transmission unit has driving parts which embed the clock signals between the data signals at the same level and generate and output single level transmission data.
    Type: Application
    Filed: October 7, 2009
    Publication date: July 28, 2011
    Applicant: SILICON WORKS CO., LTD
    Inventors: Hyun-Kyu Jeon, Yong-Hwan Moon
  • Publication number: 20100225637
    Abstract: A display driving system includes a timing controller configured to receive a data signal composed of image data and generate a control signal such as a clock signal; an interface configured to transmit the data signal and the control signal to a plurality of data drivers; the data drivers configured to receive the data signal and the control signal through the interface and supply received signals to a display panel to display an image; and a monitoring unit configured to feed back LOCK signals indicative of state information of the data drivers to the timing controller such that the data drivers can be monitored.
    Type: Application
    Filed: March 1, 2010
    Publication date: September 9, 2010
    Applicant: SILICON WORKS CO., LTD
    Inventors: Hyun-Kyu JEON, Yong-Hwan MOON
  • Publication number: 20100105616
    Abstract: The present invention relates to three-branched PEG-G-CSF conjugate of general formula (1) in which the bonding ratio of three-branched polyethylene glycol (PEG) and G-CSF is 1:1 (mol/mol), wherein PEG has an average molecular weight of from 200 to 45,000 daltons; a pharmaceutical composition comprising the same, and a preparing method thereof.
    Type: Application
    Filed: November 22, 2006
    Publication date: April 29, 2010
    Applicant: DONG-A PHARM. CO., LTD.
    Inventors: Yeong-Woo Jo, Won-Young Yoo, Hyun-Kyu Jeon, Yun-kyu Choi, Hye-In Jang, Byong-Moon Kim, Sung-Hee Lee, Soo-Hyung Kang, Moo-Hi Yoo
  • Publication number: 20090117077
    Abstract: The present invention relates to three-branched polyethylene glycol-interferon alpha conjugate of general formula (1) wherein polyethylene glycol has an average molecular weight of from 400 to 45,000 daltons, and a pharmaceutical composition comprising the same. The bioactive polyethylene glycol-interferon alpha conjugate of general formula (1) has antiviral and antitumoral activities, improved yield and purity by high reactivity in the reaction, and the effects to increase the half-life in blood remarkably, and to minimize the decreases in biological activity of interferon.
    Type: Application
    Filed: May 12, 2006
    Publication date: May 7, 2009
    Applicant: DONG-A PHARM. CO., LTD.
    Inventors: Yeong-Woo Jo, Won-Young Yoo, Hyun-Kyu Jeon, Yun-Kyu Choi, Hye-In Jang, Byong-Moon Kim, Sung-Hee Lee, Soo-Hyung Kang