Patents by Inventor Ja-Beom Koo

Ja-Beom Koo 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: 11373697
    Abstract: A semiconductor memory device includes a cell array including a plurality of word lines; a plurality of address storing circuits suitable for sequentially storing a sampling address as one of a plurality of latch addresses, and sequentially outputting each of the latch addresses as a target address according to a refresh command; a duplication decision circuit suitable for preventing the sampling address from being stored in the address storing circuits when the sampling address is identical to any of the latch addresses stored in the address storing circuits; and a row control circuit suitable for refreshing one or more word lines based on the target address in response to the refresh command.
    Type: Grant
    Filed: October 14, 2020
    Date of Patent: June 28, 2022
    Assignee: SK hynix Inc.
    Inventors: Jung Ho Lim, Ja Beom Koo
  • Publication number: 20220197487
    Abstract: The present invention relates to a view mode change device for rotating or fixing a displayed content by using a specific pattern according to simultaneous movements of a first touch and a second touch, and a method therefor, the view mode change device comprising a touch panel; a pattern sensing unit for sensing a first touch with a specific time duration in one area of the touch panel, sensing a second touch with a specific time duration in the other area of the touch panel, and sensing a specific pattern according to simultaneous movements of the first touch and the second touch; and a screen control unit for rotating or fixing, by the specific pattern, a content being displayed on the touch panel.
    Type: Application
    Filed: June 19, 2020
    Publication date: June 23, 2022
    Inventor: Ja Beom KOO
  • Publication number: 20210375346
    Abstract: A semiconductor memory device includes a cell array including a plurality of word lines; a plurality of address storing circuits suitable for sequentially storing a sampling address as one of a plurality of latch addresses, and sequentially outputting each of the latch addresses as a target address according to a refresh command; a duplication decision circuit suitable for preventing the sampling address from being stored in the address storing circuits when the sampling address is identical to any of the latch addresses stored in the address storing circuits; and a row control circuit suitable for refreshing one or more word lines based on the target address in response to the refresh command.
    Type: Application
    Filed: October 14, 2020
    Publication date: December 2, 2021
    Inventors: Jung Ho LIM, Ja Beom KOO
  • Patent number: 10976368
    Abstract: A memory device may be provided. The memory device may include a test data output circuit configured to compare lower data output from a lower data storage region with upper data output from an upper data storage region and make a decision. The memory device may include a data transmitter configured to output the lower data by inverting or noninverting the lower data according to the decision. The memory device may include a test control circuit generates a test control signal according to a test read signal and an address signal.
    Type: Grant
    Filed: April 18, 2019
    Date of Patent: April 13, 2021
    Assignee: SK hynix Inc.
    Inventor: Ja Beom Koo
  • Patent number: 10734062
    Abstract: A semiconductor device includes a cell array having an upper segment and a lower segment which are classified according to refresh units. The semiconductor device includes a first repair controller configured to output a first repair signal for controlling a repair operation of the upper segment based on a fuse address, a row address, a second control signal, and selection address being at a first level, and generate a first control signal for controlling a repair operation of the lower segment based on the fuse address, the row address, and selection address.
    Type: Grant
    Filed: December 13, 2018
    Date of Patent: August 4, 2020
    Assignee: SK hynix Inc.
    Inventors: Ja Beom Koo, Sung Soo Chi
  • Publication number: 20190385661
    Abstract: A semiconductor device includes a cell array having an upper segment and a lower segment which are classified according to refresh units. The semiconductor device includes a first repair controller configured to output a first repair signal for controlling a repair operation of the upper segment based on a fuse address, a row address, a second control signal, and selection address being at a first level, and generate a first control signal for controlling a repair operation of the lower segment based on the fuse address, the row address, and selection address.
    Type: Application
    Filed: December 13, 2018
    Publication date: December 19, 2019
    Applicant: SK hynix Inc.
    Inventors: Ja Beom KOO, Sung Soo CHI
  • Publication number: 20190242944
    Abstract: A memory device may be provided. The memory device may include a test data output circuit configured to compare lower data output from a lower data storage region with upper data output from an upper data storage region and make a decision. The memory device may include a data transmitter configured to output the lower data by inverting or noninverting the lower data according to the decision. The memory device may include a test control circuit generates a test control signal according to a test read signal and an address signal.
    Type: Application
    Filed: April 18, 2019
    Publication date: August 8, 2019
    Applicant: SK hynix Inc.
    Inventor: Ja Beom KOO
  • Patent number: 10302701
    Abstract: A memory device may be provided. The memory device may include a test data output circuit configured to compare lower data output from a lower data storage region with upper data output from an upper data storage region and make a decision. The memory device may include a data transmitter configured to output the lower data by inverting or noninverting the lower data according to the decision. The memory device may include a test control circuit generates a test control signal according to a test read signal and an address signal.
    Type: Grant
    Filed: August 11, 2017
    Date of Patent: May 28, 2019
    Assignee: SK hynix Inc.
    Inventor: Ja Beom Koo
  • Publication number: 20180218777
    Abstract: A memory device may be provided. The memory device may include a test data output circuit configured to compare lower data output from a lower data storage region with upper data output from an upper data storage region and make a decision. The memory device may include a data transmitter configured to output the lower data by inverting or noninverting the lower data according to the decision. The memory device may include a test control circuit generates a test control signal according to a test read signal and an address signal.
    Type: Application
    Filed: August 11, 2017
    Publication date: August 2, 2018
    Applicant: SK hynix Inc.
    Inventor: Ja Beom KOO
  • Patent number: 9934875
    Abstract: An integrated circuit may include nonvolatile memory suitable for outputting stored data during the boot-up operation, one or more registers suitable for receiving the data output by the nonvolatile memory and storing the received data when the boot-up operation is performed, and one or more internal circuits suitable for operating using the data stored in the one or more registers. In no-update mode, although the boot-up operation is performed, a data update from the nonvolatile memory to the registers may not be performed.
    Type: Grant
    Filed: June 1, 2016
    Date of Patent: April 3, 2018
    Assignee: SK Hynix Inc.
    Inventors: Ja-Beom Koo, Jeong-Tae Hwang
  • Publication number: 20170186501
    Abstract: An integrated circuit may include nonvolatile memory suitable for outputting stored data during the boot-up operation, one or more registers suitable for receiving the data output by the nonvolatile memory and storing the received data when the boot-up operation is performed, and one or more internal circuits suitable for operating using the data stored in the one or more registers. In no-update mode, although the boot-up operation is performed, a data update from the nonvolatile memory to the registers may not be performed.
    Type: Application
    Filed: June 1, 2016
    Publication date: June 29, 2017
    Inventors: Ja-Beom KOO, Jeong-Tae HWANG
  • Patent number: 9543951
    Abstract: A semiconductor apparatus may include an internal voltage level controller configured to output either a normal trimming code or a test voltage code as a voltage control code in response to a test mode signal, a specific operation start signal, and a specific operation end signal. The semiconductor apparatus may include an internal voltage generator configured to generate an internal voltage and control a voltage level of the internal voltage in response to the voltage control code.
    Type: Grant
    Filed: September 8, 2015
    Date of Patent: January 10, 2017
    Assignee: SK HYNIX INC.
    Inventors: Ja Beom Koo, Jeong Tae Hwang
  • Publication number: 20160308532
    Abstract: A semiconductor apparatus may include an internal voltage level controller configured to output either a normal trimming code or a test voltage code as a voltage control code in response to a test mode signal, a specific operation start signal, and a specific operation end signal. The semiconductor apparatus may include an internal voltage generator configured to generate an internal voltage and control a voltage level of the internal voltage in response to the voltage control code.
    Type: Application
    Filed: September 8, 2015
    Publication date: October 20, 2016
    Inventors: Ja Beom KOO, Jeong Tae HWANG
  • Patent number: 8810295
    Abstract: A latch circuit may include a first inverting unit configured to drive a second node in response to a level of a first node, a second inverting unit configured to drive the first node in response to a level of the second node, an initialization unit configured to drive the first node at a first level in response to activation of an initialization signal, and a power breaker configured to break a supply of power of a second level to the second inverting unit when the initialization signal is activated.
    Type: Grant
    Filed: December 17, 2012
    Date of Patent: August 19, 2014
    Assignee: SK Hynix Inc.
    Inventors: Ja-Beom Koo, Kang-Youl Lee, Don-Hyun Choi
  • Publication number: 20130307595
    Abstract: A latch circuit may include a first inverting unit configured to drive a second node in response to a level of a first node, a second inverting unit configured to drive the first node in response to a level of the second node, an initialization unit configured to drive the first node at a first level in response to activation of an initialization signal, and a power breaker configured to break a supply of power of a second level to the second inverting unit when the initialization signal is activated.
    Type: Application
    Filed: December 17, 2012
    Publication date: November 21, 2013
    Applicant: SK HYNIX INC.
    Inventors: Ja-Beom KOO, Kang-Youl LEE, Don-Hyun CHOI
  • Patent number: 8581650
    Abstract: A duty cycle correction circuit includes: a duty cycle correction unit configured to correct a duty cycle of an input clock signal according to a duty cycle correction code and generate an output clock signal; a duty cycle detection section configured to detect a duty cycle of the output clock signal and generate an up-down signal; a noise detection signal generation section configured to detect a variation of the up-down signal and generate the noise detection signal; and a duty cycle correction control unit configured to generate the duty cycle correction code in response to the noise detection signal and the up-down signal.
    Type: Grant
    Filed: August 1, 2012
    Date of Patent: November 12, 2013
    Assignee: SK Hynix Inc.
    Inventors: Ki Han Kim, Ja Beom Koo
  • Publication number: 20130154702
    Abstract: A duty cycle correction circuit includes: a duty cycle correction unit configured to correct a duty cycle of an input clock signal according to a duty cycle correction code and generate an output clock signal; a duty cycle detection section configured to detect a duty cycle of the output clock signal and generate an up-down signal; a noise detection signal generation section configured to detect a variation of the up-down signal and generate the noise detection signal; and a duty cycle correction control unit configured to generate the duty cycle correction code in response to the noise detection signal and the up-down signal.
    Type: Application
    Filed: August 1, 2012
    Publication date: June 20, 2013
    Applicant: SK hynix Inc.
    Inventors: Ki Han KIM, Ja Beom KOO
  • Patent number: 8237464
    Abstract: An integrated circuit for controlling data output impedance includes an address decoder, a selection signal decoder, and a transfer control unit. The address decoder is configured to decode an address signal and generate a selection mode signal and a first adjustment mode signal. The selection signal decoder is configured to decode a selection signal and generate an enable signal and a disable signal. The transfer control unit is configured to transfer a pull-up signal and a pull-down signal as a selection pull-up signal and a selection pull-down signal.
    Type: Grant
    Filed: February 24, 2011
    Date of Patent: August 7, 2012
    Assignee: SK Hynix Inc.
    Inventors: Ja Beom Koo, Kwan Weon Kim
  • Publication number: 20120007631
    Abstract: An integrated circuit for controlling data output impedance includes an address decoder, a selection signal decoder, and a transfer control unit. The address decoder is configured to decode an address signal and generate a selection mode signal and a first adjustment mode signal. The selection signal decoder is configured to decode a selection signal and generate an enable signal and a disable signal. The transfer control unit is configured to transfer a pull-up signal and a pull-down signal as a selection pull-up signal and a selection pull-down signal.
    Type: Application
    Filed: February 24, 2011
    Publication date: January 12, 2012
    Applicant: HYNIX SEMICONDUCTOR INC.
    Inventors: Ja Beom KOO, Kwan Weon KIM
  • Patent number: 7986177
    Abstract: A semiconductor device, includes a clock delay unit configured to include a plurality of delay units connected in series, where the delay amount of each delay unit varies depending on a level of a control voltage, for delaying a source clock to generate a feedback clock and mixing clocks outputted from the respective delay units to generate a frequency multiplication clock, a harmonic lock determination unit configured to determine whether a harmonic lock has occurred based on a frequency difference between the source clock and the frequency multiplication clock, and a control voltage generator configured to adjust a level of the control voltage based on a phase difference between the source clock and the feedback clock and a determination result of the harmonic lock determination unit.
    Type: Grant
    Filed: June 30, 2009
    Date of Patent: July 26, 2011
    Assignee: Hynix Semiconductor Inc.
    Inventors: Ja-Beom Koo, Dong-Suk Shin