Patents by Inventor Ic-Su Oh

Ic-Su Oh 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: 9276500
    Abstract: A reservoir capacitor includes a first capacitor group having two or more capacitors, which are serially coupled to each other between a first power voltage supply terminal and a second power voltage supply terminal, a second capacitor group having two or more capacitors, which are serially coupled to each other between a third power voltage supply terminal and a fourth power voltage supply terminal and a connection line suitable for electrically coupling a first coupling node between the capacitors of the first capacitor group to a second coupling node between the capacitors of the second capacitor group.
    Type: Grant
    Filed: December 15, 2013
    Date of Patent: March 1, 2016
    Assignee: SK Hynix Inc.
    Inventors: Boo-Ho Jung, Sung-Woo Han, Ic-Su Oh, Jun-Ho Lee, Hyun-Seok Kim, Sun-Ki Cho, Tae-Hoon Kim, Ki-Chul Hong
  • Publication number: 20150076924
    Abstract: This technology provides a semiconductor device capable of controlling an equivalent series resistance (ESR) generated from decoupling capacitors. To this end, the semiconductor device may include a plurality of decoupling capacitors electrically coupled between a first wire and a second wire in parallel, and a plurality of switches coupled between common source/drain terminals of two adjacent decoupling capacitors of the plurality of decoupling capacitors and the second wire.
    Type: Application
    Filed: December 16, 2013
    Publication date: March 19, 2015
    Applicant: SK hynix Inc.
    Inventors: Hyun-Seok KIM, Sung-Woo HAN, Ic-Su OH, Jun-Ho LEE, Boo-Ho JUNG, Sun-Ki CHO, Tae-Hoon KIM, Ki-Chul HONG
  • Publication number: 20150055399
    Abstract: A reservoir capacitor includes a first capacitor group having two or more capacitors, which are serially coupled to each other between a first power voltage supply terminal and a second power voltage supply terminal, a second capacitor group having two or more capacitors, which are serially coupled to each other between a third power voltage supply terminal and a fourth power voltage supply terminal and a connection line suitable for electrically coupling a first coupling node between the capacitors of the first capacitor group to a second coupling node between the capacitors of the second capacitor group.
    Type: Application
    Filed: December 15, 2013
    Publication date: February 26, 2015
    Applicant: SK hynix Inc.
    Inventors: Boo-Ho JUNG, Sung-Woo HAN, Ic-Su OH, Jun-Ho LEE, Hyun-Seok KIM, Sun-Ki CHO, Tae-Hoon KIM, Ki-Chul HONG
  • Patent number: 8754688
    Abstract: A signal output circuit includes a signal transfer unit configured to transfer a signal of a first line to a pull-up line during an activation period of a first clock, transfer the signal of the first line to a pull-down line during a deactivation period of a second clock, transfer a signal of a second line to the pull-up line during a deactivation period of the first clock, and transfer the signal of the second line to the pull-down line during an activation period of the second clock; and an output driving unit configured to pull-up drive an output node in response to a signal of the pull-up line and pull-down drive the output node in response to a signal of the pull-down line, wherein the first clock and the second clock have the activation periods longer than the deactivation periods.
    Type: Grant
    Filed: September 10, 2012
    Date of Patent: June 17, 2014
    Assignee: SK Hynix Inc.
    Inventor: Ic-Su Oh
  • Patent number: 8503251
    Abstract: A semiconductor memory device includes a memory bank configured to output stored data in response to a column selection signal, a plurality of data latching units configured to latch the data outputted from the memory bank in response to an input control signal which is generated according to the column selection signal, and output the latched data in response to an output control signal, a time measurement unit configured to measure a time from an activation of the input control signal to an activation of the output control signal and generate a delay control signal, and an activation control unit configured to control an activation time of the column selection signal in response to the delay control signal.
    Type: Grant
    Filed: September 14, 2010
    Date of Patent: August 6, 2013
    Assignee: Hynix Semiconductor Inc.
    Inventors: Hyung-Soo Kim, Ki-Myung Kyung, Ic-Su Oh, Chang-Kun Park
  • Publication number: 20130162314
    Abstract: A signal output circuit includes a signal transfer unit configured to transfer a signal of a first line to a pull-up line during an activation period of a first clock, transfer the signal of the first line to a pull-down line during a deactivation period of a second clock, transfer a signal of a second line to the pull-up line during a deactivation period of the first clock, and transfer the signal of the second line to the pull-down line during an activation period of the second clock; and an output driving unit configured to pull-up drive an output node in response to a signal of the pull-up line and pull-down drive the output node in response to a signal of the pull-down line, wherein the first clock and the second clock have the activation periods longer than the deactivation periods.
    Type: Application
    Filed: September 10, 2012
    Publication date: June 27, 2013
    Inventor: Ic-Su OH
  • Patent number: 8461878
    Abstract: The input buffer circuit of a semiconductor apparatus includes a first buffering unit that that is activated by a voltage level difference between a first voltage terminal and a second voltage terminal, and generates a first compare signal and a second compare signal by comparing the voltage levels of reference voltage and an input signal; a control unit that controls the amount of current flowing between the second voltage terminal and a ground terminal by comparing the voltage levels of the reference voltage and the second compare signal; and a second buffering unit that generates an output signal by comparing the voltage levels of the input signal and the first compare signal.
    Type: Grant
    Filed: November 19, 2012
    Date of Patent: June 11, 2013
    Assignee: SK Hynix Inc.
    Inventors: Ji-Wang Lee, Yong-Ju Kim, Sung-Woo Han, Hee-Woong Song, Ic-Su Oh, Hyung-Soo Kim, Tae-Jin Hwang, Hae-Rang Choi, Jae-Min Jang, Chang-Kun Park
  • Patent number: 8436666
    Abstract: An interface apparatus for a semiconductor integrated circuit and an interfacing method thereof controls the VOX of differential signals to a target level in response to the differential signals being outputted by an output block. The interface apparatus for a semiconductor integrated circuit includes an output block configured to output differential signals output by an internal circuit a detector configured to detect a timing error of the differential signals; and a controller configured to control a timing of the differential signals output by the internal circuit according to a detection result of the detector.
    Type: Grant
    Filed: December 30, 2009
    Date of Patent: May 7, 2013
    Assignee: Hynix Semiconductor Inc.
    Inventors: Ji-Wang Lee, Yong-Ju Kim, Hee-Woong Song, Ic-Su Oh, Hyung-Soo Kim, Tae-Jin Hwang, Hae-Rang Choi, Jae-Min Jang, Chang-Kun Park
  • Patent number: 8339159
    Abstract: The input buffer circuit of a semiconductor apparatus includes a first buffering unit that that is activated by a voltage level difference between a first voltage terminal and a second voltage terminal, and generates a first compare signal and a second compare signal by comparing the voltage levels of reference voltage and an input signal; a control unit that controls the amount of current flowing between the second voltage terminal and a ground terminal by comparing the voltage levels of the reference voltage and the second compare signal; and a second buffering unit that generates an output signal by comparing the voltage levels of the input signal and the first compare signal.
    Type: Grant
    Filed: August 13, 2009
    Date of Patent: December 25, 2012
    Assignee: Hynix Semiconductor Inc.
    Inventors: Ji-Wang Lee, Yong-Ju Kim, Sung-Woo Han, Hee-Woong Song, Ic-Su Oh, Hyung-Soo Kim, Tae-Jin Hwang, Hae-Rang Choi, Jae-Min Jang, Chang-Kun Park
  • Patent number: 8283804
    Abstract: A semiconductor IC device capable of power-sharing includes a first power line configured to be supplied with a first power, a second power line configured to be supplied with a second power, a switching block configured to connect the first power line with the second power line in response to a first control signal, and a power-sharing control block configured to generate the control signal in accordance with a plurality of operation command signals.
    Type: Grant
    Filed: December 11, 2008
    Date of Patent: October 9, 2012
    Assignee: SK hynix Inc.
    Inventors: Hyung-Soo Kim, Yong-Ju Kim, Sung-Woo Han, Hee-Woong Song, Ic-Su Oh, Tae-Jin Hwang, Hae-Rang Choi, Ji-Wang Lee, Jae-Min Jang, Chang-Kun Park
  • Patent number: 8278981
    Abstract: A variable delay circuit includes at least a fixed delay unit, a first selection unit, and variable delay unit. The fixed delay unit receives an input signal and a first delay selection signal indicative of a first delay, and outputs a first delayed signal that is substantially the input signal delayed by the first delay. The first selection unit receives the input signal, the first delayed signal, and a second delay selection signal, and outputs either the input signal or the first delayed signal based on the second delay selection signal to the variable delay unit. The variable delay unit also receives a third delay selection signal indicative of a third delay, and outputs a output signal that is substantially the output signal of the selection unit delayed by a third delay. The first delay is 0 or X multiples of M delay units. The third delay is a delay selected from 0 to N delay units.
    Type: Grant
    Filed: December 14, 2009
    Date of Patent: October 2, 2012
    Assignee: Hynix Semiconductor Inc.
    Inventors: Hae-Rang Choi, Yong-Ju Kim, Sung-Woo Han, Hee-Woong Song, Ic-Su Oh, Hyung-Soo Kim, Tae-Jin Hwang, Ji-Wang Lee, Jae-Min Jang, Chang-Kun Park
  • Publication number: 20120161859
    Abstract: An internal supply voltage generating circuit includes a clock comparator configured to compare a first clock signal having clock information corresponding to a level of a reference voltage with a second clock signal having clock information corresponding to a level of an internal supply voltage, a control signal generator configured to generate a driving control voltage having a voltage level corresponding to an output signal of the clock comparator, and a driver configured to drive a terminal of the internal supply voltage in response to the driving control voltage.
    Type: Application
    Filed: February 22, 2012
    Publication date: June 28, 2012
    Inventors: Yong-Ju Kim, Sung-Woo Han, Hee-Woong Song, Ic-Su Oh, Hyung-Soo Kim, Tae-Jin Hwang, Hae-Rang Choi, Ji-Wang Lee, Jae-Min Jang, Chang-Kun Park
  • Patent number: 8195855
    Abstract: A bus system includes a plurality of stubs; a plurality of connectors, each of which is serially coupled between a corresponding one of the stubs and a corresponding one of memory modules; a plurality of first serial loads, each of which is serially coupled to a corresponding one of the connectors; and a plurality of second serial loads, each of which is serially coupled to characteristic impedance of a transmission line of a corresponding one of the stubs, wherein the first and the second serial loads are determined to be impedance matched at each transmission line terminal of the stubs.
    Type: Grant
    Filed: June 3, 2009
    Date of Patent: June 5, 2012
    Assignees: Hynix Semiconductor Inc., Seoul National University Industry Foundation
    Inventors: Deog-Kyoon Jeong, Suhwan Kim, Woo-Yeol Shin, Dong-Hyuk Lim, Ic-Su Oh
  • Patent number: 8149953
    Abstract: A semiconductor integrated circuit equipped with an equalizer which has a circuit structure simpler than that of a related equalizer according to an FFE scheme or a DFE scheme and is capable of preventing a noise component from being amplified. The data receiver includes a plurality of receiver units, wherein each receiver unit includes a plurality of level detectors which detect different levels, and an encoder, in which the level detectors receive data according to a clock signal having a predetermined phase difference and perform an amplification operation including an equalization function based on feedback data, thereby outputting an amplification signal, and wherein level detectors of one receiver unit receive an amplification signal, as the feedback data, from level detectors of another receiver unit that receives a first clock signal having a phase more advanced than a phase of a second clock signal received in one receiver unit.
    Type: Grant
    Filed: July 22, 2008
    Date of Patent: April 3, 2012
    Assignee: Hynix Semiconductor, Inc.
    Inventors: Hyung-Soo Kim, Kun-Woo Park, Yong-Ju Kim, Hee-Woong Song, Ic-Su Oh, Tae-Jin Hwang, Hae-Rang Choi, Ji-Wang Lee
  • Patent number: 8144531
    Abstract: A latency control circuit includes a path calculator configured to calculate a delay value of a path that an input signal is to go through inside a chip and output the delay value as path information, a delay value calculator configured to output delay information representing a delay value for delaying the input signal based on a latency value of the input signal and the path information, and a delayer configured to delay the input signal by a delay corresponding to the delay information.
    Type: Grant
    Filed: December 8, 2009
    Date of Patent: March 27, 2012
    Assignee: Hynix Semiconductor Inc.
    Inventors: Hae-Rang Choi, Yong-Ju Kim, Sung-Woo Han, Hee-Woong Song, Ic-Su Oh, Hyung-Soo Kim, Tae-Jin Hwang, Ji-Wang Lee, Jae-Min Jang, Chang-Kun Park
  • Patent number: 8144530
    Abstract: A semiconductor memory device is able to generate an output enable signal in response to a read command and CAS latency information. The semiconductor memory device includes a delay locked loop configured to detect a phase difference of an external clock signal and a feedback clock signal, generate a delay control signal corresponding to the detected phase difference, and generate a DLL clock signal by delaying the external clock signal for a time corresponding to the delay control signal, a delay configured to output an active signal as an output enable reset signal in response to the delay control signal and an output enable signal generator configured to be reset in response to the output enable reset signal and generate an output enable signal in response to a read signal and a CAS latency signal by counting the external clock signal and the DLL clock signal.
    Type: Grant
    Filed: June 30, 2009
    Date of Patent: March 27, 2012
    Assignee: Hynix Semiconductor Inc.
    Inventors: Hyung-Soo Kim, Yong-Ju Kim, Sung-Woo Han, Hee-Woong Song, Ic-Su Oh, Tae-Jin Hwang, Hae-Rang Choi, Ji-Wang Lee, Jae-Min Jang, Chang-Kun Park
  • Patent number: 8143940
    Abstract: An internal supply voltage generating circuit includes a clock comparator configured to compare a first clock signal having clock information corresponding to a level of a reference voltage with a second clock signal having clock information corresponding to a level of an internal supply voltage, a control signal generator configured to generate a driving control voltage having a voltage level corresponding to an output signal of the clock comparator; and a driver configured to drive a terminal of the internal supply voltage in response to the driving control voltage.
    Type: Grant
    Filed: December 31, 2008
    Date of Patent: March 27, 2012
    Assignee: Hynic Semiconductor Inc.
    Inventors: Yong-Ju Kim, Sung-Woo Han, Hee-Woong Song, Ic-Su Oh, Hyung-Soo Kim, Tae-Jin Hwang, Hae-Rang Choi, Ji-Wang Lee, Jae-Min Jang, Chang-Kun Park
  • Patent number: 8139703
    Abstract: A data relay apparatus according to one embodiment described herein can include a phase detection unit that can detect a phase difference between a clock output from a transmitter and a clock output from a receiver, and generate a plurality of phase detection signals, a data relay control unit that can distinguish a difference in clock timing between the clocks of the transmitter and the receiver in response to the plurality of phase detection signals, and output a relay data selection signal and a relay control clock, and a data relay unit that can transmit data output from the receiver to the transmitter in response to the relay data selection signal and the relay control clock.
    Type: Grant
    Filed: February 27, 2008
    Date of Patent: March 20, 2012
    Assignee: Hynix Semiconductor Inc.
    Inventors: Ic-Su Oh, Kun-Woo Park, Yong-Ju Kim, Hee-Woong Song, Hyung-Soo Kim, Tae-Jin Hwang, Hae-Rang Choi, Ji-Wang Lee
  • Patent number: 8120442
    Abstract: A semiconductor device includes transmission lines for conveying signals and transition detectors, each of which checks whether a transmission signal on each of the plurality of transmission lines is transited. If the signal is transited, its transition shape is detected. A signal mode determining unit determines signal transmission modes between adjacent transmission lines in response to output signals from the plurality of transition detectors. Delay units are coupled to the respective transmission lines for adjusting transmission delays of the transmission signals depending on corresponding output signal from the signal mode determining units.
    Type: Grant
    Filed: November 7, 2008
    Date of Patent: February 21, 2012
    Assignee: Hynix Semiconductor Inc.
    Inventors: Ji-Wang Lee, Kun-Woo Park, Yong-Ju Kim, Hee-Woong Song, Ic-Su Oh, Hyung-Soo Kim, Tae-Jin Hwang, Hae-Rang Choi
  • Publication number: 20120008422
    Abstract: A semiconductor memory device includes a memory bank configured to output stored data in response to a column selection signal, a plurality of data latching units configured to latch the data outputted from the memory bank in response to an input control signal which is generated according to the column selection signal, and output the latched data in response to an output control signal, a time measurement unit configured to measure a time from an activation of the input control signal to an activation of the output control signal and generate a delay control signal, and an activation control unit configured to control an activation time of the column selection signal in response to the delay control signal.
    Type: Application
    Filed: September 14, 2010
    Publication date: January 12, 2012
    Inventors: Hyung-Soo KIM, Ki-Myung Kyung, Ic-Su Oh, Chang-Kun Park