Patents by Inventor Hanwool Jeong

Hanwool Jeong 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: 10291211
    Abstract: Adaptive pulse generation circuits for clocking pulse latches with minimum hold time are provided. In one aspect, an adaptive pulse generation circuit employs a dynamic XOR-based logic gate configured to provide a pulse generation signal based on an XOR-based function of data input and data output-based signals of a pulse latch. A pull-down keeper circuit is configured to pull the pulse generation signal to a ground voltage in response to the pulse generation signal being in an inactive state while the clock signal is in an active state. A logic circuit is configured to generate an adaptive pulse signal to clock a pulse latch in response to the pulse generation signal and the clock signal being in an active state. This configuration results in the pulse width of the adaptive pulse signal corresponding to the input-to-output delay of the pulse latch.
    Type: Grant
    Filed: September 8, 2016
    Date of Patent: May 14, 2019
    Assignee: QUALCOMM Incorporated
    Inventors: Stanley Seungchul Song, Seong-Ook Jung, Hanwool Jeong, Tae Woo Oh, Giridhar Nallapati, Periannan Chidambaram
  • Patent number: 10020050
    Abstract: Provided is a local bit line-sharing memory device, including a plurality of memory cells that share a local bit line pair; a pre-charging unit that is connected to a write bit line pair and pre-charges the local bit line pair; and a data reading unit that reads data when bit line voltage pre-charged in a memory cell selected from the memory cells is discharged.
    Type: Grant
    Filed: April 20, 2017
    Date of Patent: July 10, 2018
    Assignee: INDUSTRY-ACADEMIC COOPERATION FOUNDATION, YONSEI UNIVERSITY
    Inventors: Seong-Ook Jung, Tae Woo Oh, Hanwool Jeong
  • Publication number: 20180069535
    Abstract: Adaptive pulse generation circuits for clocking pulse latches with minimum hold time are provided. In one aspect, an adaptive pulse generation circuit employs a dynamic XOR-based logic gate configured to provide a pulse generation signal based on an XOR-based function of data input and data output-based signals of a pulse latch. A pull-down keeper circuit is configured to pull the pulse generation signal to a ground voltage in response to the pulse generation signal being in an inactive state while the clock signal is in an active state. A logic circuit is configured to generate an adaptive pulse signal to clock a pulse latch in response to the pulse generation signal and the clock signal being in an active state. This configuration results in the pulse width of the adaptive pulse signal corresponding to the input-to-output delay of the pulse latch.
    Type: Application
    Filed: September 8, 2016
    Publication date: March 8, 2018
    Inventors: Stanley Seungchul Song, Seong-Ook Jung, Hanwool Jeong, Giridhar Nallapati, Chidi Chidambaram
  • Publication number: 20170309328
    Abstract: Disclosed is a local bit line-sharing memory device, including a plurality of memory cells that share a local bit line pair; a pre-charging unit that is connected to a write bit line pair and pre-charges the local bit line pair; and a data reading unit that reads data when bit line voltage pre-charged in a memory cell selected from the memory cells is discharged.
    Type: Application
    Filed: April 20, 2017
    Publication date: October 26, 2017
    Applicant: INDUSTRY-ACADEMIC COOPERATION FOUNDATION, YONSEI UNIVERSITY
    Inventors: Seong-Ook JUNG, Tae Woo OH, Hanwool JEONG
  • Patent number: 9576623
    Abstract: The present disclosure herein relates to a sense amplifier and a semiconductor memory device employing the same. The sense amplifier includes an inverter including a pull-up transistor and a pull-down transistor, and a switching unit configured to change a connection relationship between the pull-up transistor and the pull-down transistor according to whether an input terminal of the inverter is precharged or a signal applied to the input terminal is sensed.
    Type: Grant
    Filed: December 18, 2015
    Date of Patent: February 21, 2017
    Assignee: Industry-Academic Cooperation Foundation, Yonsei University
    Inventors: Seongook Jung, Hanwool Jeong, Young Hwi Yang, Kyoman Kang
  • Patent number: 9552872
    Abstract: Disclosed is a memory device. The memory device includes a bit-cell comprising a cross-coupled inverter and pass gate transistor connected to data storage node of the cross-coupled inverter, a read buffer transistor having a drain terminal connected to a bit line for read operation and a gate terminal connected to the pass gate transistor, a write operation transistor connected between the pass gate transistor and a bit line for write operation, and a drive transistor unit which is connected to a local line between the pass gate transistors and the write operation transistor and which provide a voltage to a gate terminal of the read buffer transistor based on a data value stored at the bit-cell.
    Type: Grant
    Filed: November 16, 2015
    Date of Patent: January 24, 2017
    Assignee: Industry-Academic Cooperation Foundation, Yonsei University
    Inventors: Seongook Jung, Kyoman Kang, Hanwool Jeong, Young Hwi Yang, Juhyun Park
  • Patent number: 9496027
    Abstract: A static random access memory device may include a write driver configured to float one of a first bitline and a second bitline connected to a memory cell and apply a write voltage to the other bitline in response to a logic state of a data signal; a write failure detector configured to receive a voltage of the floated bitline and output a write failure signal; and an assist voltage generator configured to generate a write assist voltage in response to the write failure signal. The write driver may additionally provide the write assist voltage to a bitline to which the write voltage is applied.
    Type: Grant
    Filed: July 7, 2015
    Date of Patent: November 15, 2016
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Woojin Rim, Taejoong Song, Gyuhong Kim, Seong Ook Jung, Hanwool Jeong
  • Publication number: 20160181993
    Abstract: The present disclosure herein relates to a sense amplifier and a semiconductor memory device employing the same. The sense amplifier includes an inverter including a pull-up transistor and a pull-down transistor, and a switching unit configured to change a connection relationship between the pull-up transistor and the pull-down transistor according to whether an input terminal of the inverter is precharged or a signal applied to the input terminal is sensed.
    Type: Application
    Filed: December 18, 2015
    Publication date: June 23, 2016
    Inventors: Seongook JUNG, Hanwool JEONG, Young Hwi YANG, Kyoman KANG
  • Publication number: 20160141023
    Abstract: Disclosed is a memory device. The memory device includes a bit-cell comprising a cross-coupled inverter and pass gate transistor connected to data storage node of the cross-coupled inverter, a read buffer transistor having a drain terminal connected to a bit line for read operation and a gate terminal connected to the pass gate transistor, a write operation transistor connected between the pass gate transistor and a bit line for write operation, and a drive transistor unit which is connected to a local line between the pass gate transistors and the write operation transistor and which provide a voltage to a gate terminal of the read buffer transistor based on a data value stored at the bit-cell.
    Type: Application
    Filed: November 16, 2015
    Publication date: May 19, 2016
    Inventors: Seongook JUNG, Kyoman KANG, Hanwool JEONG, Young Hwi YANG, Juhyun PARK
  • Publication number: 20160042784
    Abstract: A static random access memory device may include a write driver configured to float one of a first bitline and a second bitline connected to a memory cell and apply a write voltage to the other bitline in response to a logic state of a data signal; a write failure detector configured to receive a voltage of the floated bitline and output a write failure signal; and an assist voltage generator configured to generate a write assist voltage in response to the write failure signal. The write driver may additionally provide the write assist voltage to a bitline to which the write voltage is applied.
    Type: Application
    Filed: July 7, 2015
    Publication date: February 11, 2016
    Applicant: INDUSTRY-ACADEMIC COOPERATION FOUNDATION
    Inventors: Woojin Rim, Taejoong Song, Gyuhong Kim, Seong Ook Jung, Hanwool Jeong