Patents by Inventor Dong-sik Cho

Dong-sik Cho 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: 20240061489
    Abstract: A system on chip (SoC) adjusts power of a memory through a handshake. The SoC includes a memory controller and a power manager. The memory controller is configured to control a memory. The power manager is configured to manage a supply power level of the memory. The memory controller is configured to output, to the power manager, a memory access level indicating a frequency of accesses to the memory. The power manager is configured to adjust the supply power level of the memory according to the memory access level.
    Type: Application
    Filed: November 2, 2023
    Publication date: February 22, 2024
    Inventors: JIN-OOK SONG, YUN-JU KWON, DONG-SIK CHO, BYUNG-TAK LEE
  • Patent number: 11836029
    Abstract: A system on chip (SoC) adjusts power of a memory through a handshake. The SoC includes a memory controller and a power manager. The memory controller is configured to control a memory. The power manager is configured to manage a supply power level of the memory. The memory controller is configured to output, to the power manager, a memory access level indicating a frequency of accesses to the memory. The power manager is configured to adjust the supply power level of the memory according to the memory access level.
    Type: Grant
    Filed: May 30, 2022
    Date of Patent: December 5, 2023
    Inventors: Jin-Ook Song, Yun-Ju Kwon, Dong-Sik Cho, Byung-Tak Lee
  • Publication number: 20220291737
    Abstract: A system on chip (SoC) adjusts power of a memory through a handshake. The SoC includes a memory controller and a power manager. The memory controller is configured to control a memory. The power manager is configured to manage a supply power level of the memory. The memory controller is configured to output, to the power manager, a memory access level indicating a frequency of accesses to the memory. The power manager is configured to adjust the supply power level of the memory according to the memory access level.
    Type: Application
    Filed: May 30, 2022
    Publication date: September 15, 2022
    Inventors: JIN-OOK SONG, YUN-JU KWON, DONG-SIK CHO, BYUNG-TAK LEE
  • Patent number: 11379590
    Abstract: A semiconductor device includes a monitoring circuit receiving a first supply signal and generating a flag signal by monitoring a second supply signal provided to a monitored circuit; a watchdog circuit disposed in the monitoring circuit, receiving the first supply signal, and generating a watchdog signal; and a comparison circuit receiving the flag signal and the watchdog signal and generating a first signal which has a first level under an abnormal condition and a second level under a normal condition. The second level is different than the first level. The watchdog circuit sets the watchdog signal to a third level when the level of the first supply signal is lower than a first reference level. When the watchdog signal has the third level, the comparison circuit allows the first signal to have the first level regardless of the level of the flag signal.
    Type: Grant
    Filed: July 9, 2019
    Date of Patent: July 5, 2022
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Dong Sik Cho
  • Patent number: 11347292
    Abstract: A system on chip (SoC) adjusts power of a memory through a handshake. The SoC includes a memory controller and a power manager. The memory controller is configured to control a memory. The power manager is configured to manage a supply power level of the memory. The memory controller is configured to output, to the power manager, a memory access level indicating a frequency of accesses to the memory. The power manager is configured to adjust the supply power level of the memory according to the memory access level.
    Type: Grant
    Filed: October 31, 2019
    Date of Patent: May 31, 2022
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jin-Ook Song, Yun-Ju Kwon, Dong-Sik Cho, Byung-Tak Lee
  • Patent number: 11237588
    Abstract: A periodic process performing system includes a system processor to which a first periodic real-time process, which starts to be executed starts for each of a first time interval from a first start time, is assigned; a wakeup logic which provides the system processor with a first state capable of executing the first periodic real-time process; and a counter which supplies a first tick signal to the wakeup logic for each of the first time interval from a second start time earlier than the first start time, and supplies a second tick signal to the system processor for each of the first time interval from a third start time between the first start time and the second start time.
    Type: Grant
    Filed: July 20, 2018
    Date of Patent: February 1, 2022
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventor: Dong Sik Cho
  • Patent number: 11233514
    Abstract: A subsystem interface, a semiconductor device including the subsystem interface, and a communications method of the semiconductor device are provided, the subsystem interface comprising a transmitter including a first transmission port configured to transmit a first clock signal, a second transmission port configured to transmit a first data signal, a first reception port configured to receive a first flow control signal, and a third transmission port configured to transmit a first synchronization signal, a receiver including a second reception port configured to receive a second clock signal, a third reception port configured to receive a second data signal, a fourth transmission port configured to transmit a second flow control signal, a fourth reception port configured to receive a second synchronization signal, and a control module configured to control operations of the transmitter and the receiver, including performing a transmitter hand-shake by sending a request signal from the second transmission por
    Type: Grant
    Filed: May 22, 2020
    Date of Patent: January 25, 2022
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventor: Dong Sik Cho
  • Patent number: 10985765
    Abstract: An apparatus includes a first function module providing a master signal, a second function module providing a comparison signal, and safety logic. The safety logic includes a toggle signal generator having a comparator providing a comparison result in response to the master signal and the comparison signal, a feedback path generating a first toggle signal in response to the comparison result and providing a feedback signal to the comparator, and a first multiple input gate generating a second toggle signal in response to the comparison result. The safety logic also includes a toggle signal monitor providing a final fault search signal in response to the first toggle signal and the second toggle signal.
    Type: Grant
    Filed: August 6, 2019
    Date of Patent: April 20, 2021
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Dong-Sik Cho
  • Patent number: 10977109
    Abstract: An apparatus includes a first function module providing a master signal, a second function module providing a comparison signal, and safety logic. The safety logic includes a toggle signal generator having a comparator providing a comparison result in response to the master signal and the comparison signal, a feedback path generating a first toggle signal in response to the comparison result and providing a feedback signal to the comparator, and a first multiple input gate generating a second toggle signal in response to the comparison result. The safety logic also includes a toggle signal monitor providing a final fault search signal in response to the first toggle signal and the second toggle signal.
    Type: Grant
    Filed: December 5, 2019
    Date of Patent: April 13, 2021
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Dong-Sik Cho
  • Publication number: 20200167223
    Abstract: An apparatus includes a first function module providing a master signal, a second function module providing a comparison signal, and safety logic. The safety logic includes a toggle signal generator having a comparator providing a comparison result in response to the master signal and the comparison signal, a feedback path generating a first toggle signal in response to the comparison result and providing a feedback signal to the comparator, and a first multiple input gate generating a second toggle signal in response to the comparison result. The safety logic also includes a toggle signal monitor providing a final fault search signal in response to the first toggle signal and the second toggle signal.
    Type: Application
    Filed: December 5, 2019
    Publication date: May 28, 2020
    Inventor: DONG-SIK CHO
  • Publication number: 20200110883
    Abstract: A semiconductor device includes a monitoring circuit receiving a first supply signal and generating a flag signal by monitoring a second supply signal provided to a monitored circuit; a watchdog circuit disposed in the monitoring circuit, receiving the first supply signal, and generating a watchdog signal; and a comparison circuit receiving the flag signal and the watchdog signal and generating a first signal which has a first level under an abnormal condition and a second level under a normal condition. The second level is different than the first level. The watchdog circuit sets the watchdog signal to a third level when the level of the first supply signal is lower than a first reference level. When the watchdog signal has the third level, the comparison circuit allows the first signal to have the first level regardless of the level of the flag signal.
    Type: Application
    Filed: July 9, 2019
    Publication date: April 9, 2020
    Inventor: DONG SIK CHO
  • Publication number: 20200081515
    Abstract: A system on chip (SoC) adjusts power of a memory through a handshake. The SoC includes a memory controller and a power manager. The memory controller is configured to control a memory. The power manager is configured to manage a supply power level of the memory. The memory controller is configured to output, to the power manager, a memory access level indicating a frequency of accesses to the memory. The power manager is configured to adjust the supply power level of the memory according to the memory access level.
    Type: Application
    Filed: October 31, 2019
    Publication date: March 12, 2020
    Inventors: JIN-OOK SONG, YUN-JU KWON, DONG-SIK CHO, BYUNG-TAK LEE
  • Publication number: 20200052706
    Abstract: An apparatus includes a first function module providing a master signal, a second function module providing a comparison signal, and safety logic. The safety logic includes a toggle signal generator having a comparator providing a comparison result in response to the master signal and the comparison signal, a feedback path generating a first toggle signal in response to the comparison result and providing a feedback signal to the comparator, and a first multiple input gate generating a second toggle signal in response to the comparison result. The safety logic also includes a toggle signal monitor providing a final fault search signal in response to the first toggle signal and the second toggle signal.
    Type: Application
    Filed: August 6, 2019
    Publication date: February 13, 2020
    Inventor: DONG-SIK CHO
  • Patent number: 10521382
    Abstract: A method of scheduling a system-on-chip (SoC) by a scheduler, located between a plurality of masters and a slave, includes receiving a plurality of access requests from the plurality of masters, setting the plurality of access requests in a plurality of registers, and scheduling the plurality of access requests based on the plurality of access requests.
    Type: Grant
    Filed: May 23, 2019
    Date of Patent: December 31, 2019
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Dong Sik Cho
  • Patent number: 10481668
    Abstract: A system on chip (SoC) adjusts power of a memory through a handshake. The SoC includes a memory controller and a power manager. The memory controller is configured to control a memory. The power manager is configured to manage a supply power level of the memory. The memory controller is configured to output, to the power manager, a memory access level indicating a frequency of accesses to the memory. The power manager is configured to adjust the supply power level of the memory according to the memory access level.
    Type: Grant
    Filed: August 15, 2017
    Date of Patent: November 19, 2019
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jin-Ook Song, Yun-Ju Kwon, Dong-Sik Cho, Byung-Tak Lee
  • Publication number: 20190278729
    Abstract: A method of scheduling a system-on-chip (SoC) by a scheduler, located between a plurality of masters and a slave, includes receiving a plurality of access requests from the plurality of masters, setting the plurality of access requests in a plurality of registers, and scheduling the plurality of access requests based on the plurality of access requests.
    Type: Application
    Filed: May 23, 2019
    Publication date: September 12, 2019
    Inventor: DONG SIK CHO
  • Patent number: 10339085
    Abstract: A method of scheduling a system-on-chip (SoC) by a scheduler, located between a plurality of masters and a slave, includes receiving a plurality of access requests from the plurality of masters, setting the plurality of access requests in a plurality of registers, and scheduling the plurality of access requests based on the plurality of access requests.
    Type: Grant
    Filed: August 25, 2016
    Date of Patent: July 2, 2019
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Dong Sik Cho
  • Publication number: 20190179363
    Abstract: A periodic process performing system includes a system processor to which a first periodic real-time process, which starts to be executed starts for each of a first time interval from a first start time, is assigned; a wakeup logic which provides the system processor with a first state capable of executing the first periodic real-time process; and a counter which supplies a first tick signal to the wakeup logic for each of the first time interval from a second start time earlier than the first start time, and supplies a second tick signal to the system processor for each of the first time interval from a third start time between the first start time and the second start time.
    Type: Application
    Filed: July 20, 2018
    Publication date: June 13, 2019
    Applicant: Samsung Electronics Co., Ltd.
    Inventor: Dong Sik CHO
  • Publication number: 20180203498
    Abstract: A system on chip (SoC) adjusts power of a memory through a handshake. The SoC includes a memory controller and a power manager. The memory controller is configured to control a memory. The power manager is configured to manage a supply power level of the memory. The memory controller is configured to output, to the power manager, a memory access level indicating a frequency of accesses to the memory. The power manager is configured to adjust the supply power level of the memory according to the memory access level.
    Type: Application
    Filed: August 15, 2017
    Publication date: July 19, 2018
    Inventors: JIN-OOK SONG, YUN-JU KWON, DONG-SIK CHO, BYUNG-TAK LEE
  • Publication number: 20170060796
    Abstract: A method of scheduling a system-on-chip (SoC) by a scheduler, located between a plurality of masters and a slave, includes receiving a plurality of access requests from the plurality of masters, setting the plurality of access requests in a plurality of registers, and scheduling the plurality of access requests based on the plurality of access requests.
    Type: Application
    Filed: August 25, 2016
    Publication date: March 2, 2017
    Inventor: DONG SIK CHO