Patents by Inventor Dae Han Kwon

Dae Han Kwon 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: 20230420038
    Abstract: A pipe register control signal generation circuit includes a sense amplifier configured to drive a global input/output line according to a result of sensing a voltage difference between a pair of local input/output lines according to a sense amplifier enable signal. The pipe register control signal generation circuit also includes a duplicate sense amplifier configured to simulate the sense amplifier and configured to generate a pipe register control signal according to a result of sensing a difference between a first voltage and a second voltage according to the sense amplifier enable signal.
    Type: Application
    Filed: December 6, 2022
    Publication date: December 28, 2023
    Applicant: SK hynix Inc.
    Inventors: Gi Moon HONG, Dae Han KWON
  • Publication number: 20230326496
    Abstract: A data output buffer includes a first driver configured to drive a data input/output (I/O) pad according to an input signal and allow data drivability to be controlled according to an impedance calibration code and a second driver configured to perform a de-emphasis operation on the data I/O pad and allow de-emphasis drivability to be controlled according to the impedance calibration code.
    Type: Application
    Filed: June 13, 2023
    Publication date: October 12, 2023
    Applicant: SK hynix Inc.
    Inventors: Kyu Dong HWANG, Bo Ram KIM, Dae Han KWON
  • Publication number: 20230282256
    Abstract: A semiconductor device includes a strobe transmission circuit configured to output an oscillation strobe signal, through a first delay path circuit, as a strobe signal when a first measurement operation is performed and configured to output the oscillation strobe signal through a second delay path circuit as the strobe signal when a second measurement operation is performed, and a calibration circuit configured to compare the number of times the strobe signal toggles during the first measurement operation to the number of times the strobe signal toggles during the second measurement operation to calibrate the delay amounts of the first and second delay path circuits to be the same.
    Type: Application
    Filed: July 6, 2022
    Publication date: September 7, 2023
    Applicant: SK hynix Inc.
    Inventors: Gi Moon HONG, Dae Han KWON
  • Publication number: 20230230622
    Abstract: A processing-in-memory (PIM) device includes a plurality of multiplication and accumulation (MAC) units, each of the MAC units including a memory bank and a MAC operator, and a control circuit configured to control the plurality of MAC units to perform an all MAC mode operation in which MAC operations are performed in all MAC units, among the plurality of MAC units, or a dispersion MAC mode operation in which the MAC operations are performed in some MAC units, among the plurality of MAC units.
    Type: Application
    Filed: June 13, 2022
    Publication date: July 20, 2023
    Applicant: SK hynix Inc.
    Inventors: Joon Hong PARK, Dae Han KWON
  • Patent number: 11699467
    Abstract: A data output buffer includes a first driver configured to drive a data input/output (I/O) pad according to an input signal and allow data drivability to be controlled according to an impedance calibration code and a second driver configured to perform a de-emphasis operation on the data I/O pad and allow de-emphasis drivability to be controlled according to the impedance calibration code.
    Type: Grant
    Filed: June 28, 2021
    Date of Patent: July 11, 2023
    Assignee: SK hynix Inc.
    Inventors: Kyu Dong Hwang, Bo Ram Kim, Dae Han Kwon
  • Patent number: 11611362
    Abstract: A duobinary receiver includes a signal dividing circuit configured to output a plurality of data by dividing an input signal according to a plurality of multi-phase sampling clocks signals; a level detecting circuit configured to output a plurality of state signals respectively corresponding to duobinary levels of the plurality of data; and a data converting circuit configured to decode the plurality of state signals to output a corresponding plurality of bits.
    Type: Grant
    Filed: August 25, 2021
    Date of Patent: March 21, 2023
    Assignees: SK hynix Inc., RESEARCH & BUSINESS FOUNDATION SUNGKYUNKWAN UNIVERSITY
    Inventors: Dongsuk Kang, Jaewoo Park, Jung-Hoon Chun, Kyu Dong Hwang, Dae Han Kwon
  • Patent number: 11489529
    Abstract: A semiconductor apparatus receives a first clock signal and a second clock signal. The semiconductor apparatus configured to perform a training operation internally, the training operation being an operation of internally correcting a phase difference between the first clock signal and the second clock signal by dividing the first clock signal to generate multi-phase signals, detecting phase difference between the second clock signal and the multi-phase signals, and adjusting phases of the multi-phase signals according to a result of the detecting of the phase difference.
    Type: Grant
    Filed: January 27, 2021
    Date of Patent: November 1, 2022
    Assignee: SK hynix Inc.
    Inventors: Gi Moon Hong, Dae Han Kwon, Kyu Young Kim
  • Publication number: 20220345115
    Abstract: A bias generation circuit may include a bias generator and compensator. The bias generator may be configured to generate a bias voltage based on a reference voltage. The compensator may be configured to detect level changes of a power voltage. The compensator may be configured to control a level of the bias voltage based on detection results.
    Type: Application
    Filed: July 8, 2022
    Publication date: October 27, 2022
    Applicant: SK hynix Inc.
    Inventors: Gi Moon HONG, Dae Han KWON
  • Publication number: 20220345114
    Abstract: A bias generation circuit may include a bias generator and compensator. The bias generator may be configured to generate a bias voltage based on a reference voltage. The compensator may be configured to detect level changes of a power voltage. The compensator may be configured to control a level of the bias voltage based on detection results.
    Type: Application
    Filed: July 8, 2022
    Publication date: October 27, 2022
    Applicant: SK hynix Inc.
    Inventors: Gi Moon HONG, Dae Han KWON
  • Patent number: 11476885
    Abstract: A transceiver includes a duobinary conversion circuit configured to determine a level of an input signal which is a duobinary signal according to an intermediate voltage, a first reference voltage higher than the intermediate voltage, and a second reference voltage lower than the intermediate voltage, and to convert the input signal into a non-return-to-zero (NRZ) signal; and a control circuit configured to generate one or more control signals to substantially remove inter-symbol interference (ISI) between symbols of the input signal, and to adjust the first reference voltage, or the second reference voltage, or both according to the level of the input signal.
    Type: Grant
    Filed: February 16, 2021
    Date of Patent: October 18, 2022
    Assignees: SK hynix Inc., RESEARCH & BUSINESS FOUNDATION SUNGKYUNKWAN UNIVERSITY
    Inventors: Dongsuk Kang, Xuefan Jin, Jaewoo Park, Jung-Hoon Chun, Kyu Dong Hwang, Dae Han Kwon
  • Publication number: 20220310135
    Abstract: A data output buffer includes a first driver configured to drive a data input/output (I/O) pad according to an input signal and allow data drivability to be controlled according to an impedance calibration code and a second driver configured to perform a de-emphasis operation on the data I/O pad and allow de-emphasis drivability to be controlled according to the impedance calibration code.
    Type: Application
    Filed: June 28, 2021
    Publication date: September 29, 2022
    Applicant: SK hynix Inc.
    Inventors: Kyu Dong HWANG, Bo Ram KIM, Dae Han KWON
  • Patent number: 11418170
    Abstract: A bias generation circuit may include a bias generator and compensator. The bias generator may be configured to generate a bias voltage based on a reference voltage. The compensator may be configured to detect level changes of a power voltage. The compensator may be configured to control a level of the bias voltage based on detection results.
    Type: Grant
    Filed: October 16, 2020
    Date of Patent: August 16, 2022
    Assignee: SK hynix Inc.
    Inventors: Gi Moon Hong, Dae Han Kwon
  • Patent number: 11385674
    Abstract: A clock distribution circuit may include a data clock generation circuit configured to be input a power source voltage and configured to generate an internal clock signal according to an external clock signal; and a global distribution circuit includes a first circuit and a second circuit coupled to a global line, configured to be input a power source voltage and configured to receive the internal clock signal through the first circuit and distribute the internal clock signal to an exterior of the clock distribution circuit through the second circuit, wherein a first bias voltage provided to the first circuit and a second bias voltage provided to the second circuit are controlled independently of each other.
    Type: Grant
    Filed: June 2, 2020
    Date of Patent: July 12, 2022
    Assignee: SK hynix Inc.
    Inventors: Soo Young Jang, Dae Han Kwon, Geun Il Lee, Kyu Dong Hwang
  • Patent number: 11374570
    Abstract: A transmitter provides a duobinary signal corresponding to one of level 0, level 1, and level 2 based on first data and second data, and includes a pull-up driving circuit including a plurality of pull-up resistors selectively coupled between a first power source and a transmission node according to the first data and the second data; and a pull-down driving circuit including a plurality of pull-down resistors selectively coupled between the transmission node and a second power source, wherein at least one of the plurality of pull-up resistors is coupled between the first power source and the transmission node both when the first data is activated and when the second data is activated, or at least one of the plurality of pull-down resistors is coupled between the second power source and the transmission node both when the first data is activated and when the second data is activated.
    Type: Grant
    Filed: August 5, 2021
    Date of Patent: June 28, 2022
    Assignees: SK hynix Inc., RESEARCH & BUSINESS FOUNDATION SUNGKYUNKWAN UNIVERSITY
    Inventors: Dongsuk Kang, Jaewoo Park, Jung-Hoon Chun, Kyu Dong Hwang, Dae Han Kwon
  • Publication number: 20220166451
    Abstract: A duobinary receiver includes a signal dividing circuit configured to output a plurality of data by dividing an input signal according to a plurality of multi-phase sampling clocks signals; a level detecting circuit configured to output a plurality of state signals respectively corresponding to duobinary levels of the plurality of data; and a data converting circuit configured to decode the plurality of state signals to output a corresponding plurality of bits.
    Type: Application
    Filed: August 25, 2021
    Publication date: May 26, 2022
    Inventors: Dongsuk KANG, Jaewoo PARK, Jung-Hoon CHUN, Kyu Dong HWANG, Dae Han KWON
  • Patent number: 11327911
    Abstract: A semiconductor apparatus may include a data output path connected to a data input/output pad and configured to output read data according to a read command, and at least one circuit configuration included in the data output path may perform a pre-toggling operation of toggling its own output signal at least once in an interval between a time point at which the read command has been generated and a time point at which the read data is outputted through the data output path.
    Type: Grant
    Filed: April 22, 2020
    Date of Patent: May 10, 2022
    Assignee: SK hynix Inc.
    Inventors: Kyu Young Kim, Dae Han Kwon, Ha Jun Jeong
  • Publication number: 20220077862
    Abstract: A semiconductor apparatus receives a first clock signal and a second clock signal. The semiconductor apparatus configured to perform a training operation internally, the training operation being an operation of internally correcting a phase difference between the first clock signal and the second clock signal by dividing the first clock signal to generate multi-phase signals, detecting phase difference between the second clock signal and the multi-phase signals, and adjusting phases of the multi-phase signals according to a result of the detecting of the phase difference.
    Type: Application
    Filed: January 27, 2021
    Publication date: March 10, 2022
    Applicant: SK hynix Inc.
    Inventors: Gi Moon HONG, Dae Han KWON, Kyu Young KIM
  • Patent number: 11271549
    Abstract: A semiconductor device includes a circuit including an input coupled to a first node; and a first signal control circuit configured to determine a voltage of the first node in a low power mode, wherein the first signal control circuit sets a voltage of the first node to a first value in an n-th occurrence of the low power mode and a second value different from the first value in an m-th occurrence of the low power mode, and wherein n and m are two different natural numbers.
    Type: Grant
    Filed: November 13, 2020
    Date of Patent: March 8, 2022
    Assignees: SK hynix Inc., Seoul National University R&DB Foundation
    Inventors: Shin Hyun Jeong, Suhwan Kim, Gi Moon Hong, Ji Hyo Kang, Jae Hyeok Yang, Dae Han Kwon, Dong Hyun Kim
  • Patent number: 11239872
    Abstract: A signal receiver includes a first preliminary receiver circuit suitable for receiving an input signal and generating a first preliminary reception signal based on a first reference voltage, a second preliminary receiver circuit suitable for receiving the input signal and generating a second preliminary reception signal based on a second reference voltage, a reception circuit suitable for selecting one of the first preliminary reception signal and the second preliminary reception signal in response to a voltage level of a reception signal and generating the reception signal using the selected signal, and a reference voltage generation circuit suitable for adjusting a voltage level of the first reference voltage based on a first offset and adjusting a voltage level of the second reference voltage based on a second offset.
    Type: Grant
    Filed: October 29, 2020
    Date of Patent: February 1, 2022
    Assignee: SK hynix Inc.
    Inventors: Joo-Hyung Chae, Dae Han Kwon
  • Publication number: 20210384894
    Abstract: A bias generation circuit may include a bias generator and compensator. The bias generator may be configured to generate a bias voltage based on a reference voltage. The compensator may be configured to detect level changes of a power voltage. The compensator may be configured to control a level of the bias voltage based on detection results.
    Type: Application
    Filed: October 16, 2020
    Publication date: December 9, 2021
    Applicant: SK hynix Inc.
    Inventors: Gi Moon HONG, Dae Han KWON