Patents by Inventor Chang-eun Choi

Chang-eun Choi 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: 11513948
    Abstract: A memory system includes a first memory device including a plurality of first physical blocks; a second memory device including a plurality of second physical blocks; a first core suitable for managing a plurality of first super blocks that store data associated with a first logical address, the plurality of first super blocks being mapped to the plurality of first physical blocks; a second core suitable for managing a plurality of second super blocks that store data associated with a second logical address, the plurality of second super blocks being mapped to the plurality of second physical blocks; a global wear-leveling manager suitable for changing mapping between the first physical blocks, which are mapped to one among the first super blocks, and the second physical blocks, which are mapped to one among the second super blocks based on degrees of wear of the first and second super blocks.
    Type: Grant
    Filed: September 11, 2020
    Date of Patent: November 29, 2022
    Assignee: SK hynix Inc.
    Inventors: Yong Seok Oh, Youngho Ahn, Joon Ho Lee, Chang Eun Choi
  • Publication number: 20210294739
    Abstract: A memory system includes a first memory device including a plurality of first physical blocks; a second memory device including a plurality of second physical blocks; a first core suitable for managing a plurality of first super blocks that store data associated with a first logical address, the plurality of first super blocks being mapped to the plurality of first physical blocks; a second core suitable for managing a plurality of second super blocks that store data associated with a second logical address, the plurality of second super blocks being mapped to the plurality of second physical blocks; a global wear-leveling manager suitable for changing mapping between the first physical blocks, which are mapped to one among the first super blocks, and the second physical blocks, which are mapped to one among the second super blocks based on degrees of wear of the first and second super blocks.
    Type: Application
    Filed: September 11, 2020
    Publication date: September 23, 2021
    Inventors: Yong Seok OH, Youngho AHN, Joon Ho LEE, Chang Eun CHOI
  • Patent number: 10954847
    Abstract: An apparatus for controlling a vehicle includes a valve that introduces or blocks a coolant discharged from a coolant pump into latent heat storage, a first temperature sensor that measures a first coolant temperature discharged from the coolant pump, a second temperature sensor that measures a second coolant temperature in the latent heat storage, and a controller that controls opening and closing of the valve based on the first coolant temperature measured by the first temperature sensor and the second coolant temperature measured by the second temperature sensor.
    Type: Grant
    Filed: October 22, 2019
    Date of Patent: March 23, 2021
    Assignees: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATION
    Inventors: Chang Eun Choi, Young Ho Jung, Won Jun Sung, Hyuk Jun Lee
  • Publication number: 20200400061
    Abstract: An apparatus for controlling a vehicle includes a valve that introduces or blocks a coolant discharged from a coolant pump into latent heat storage, a first temperature sensor that measures a first coolant temperature discharged from the coolant pump, a second temperature sensor that measures a second coolant temperature in the latent heat storage, and a controller that controls opening and closing of the valve based on the first coolant temperature measured by the first temperature sensor and the second coolant temperature measured by the second temperature sensor.
    Type: Application
    Filed: October 22, 2019
    Publication date: December 24, 2020
    Inventors: Chang Eun CHOI, Young Ho JUNG, Won Jun SUNG, Hyuk Jun LEE
  • Patent number: 10635322
    Abstract: A computing device and a method of operating the same are provided. The computing device includes a modem that communicates with an external device, a storage device, an application processor that accesses the storage device, and a switch that selectively provides one of a first communication path connecting the modem and the application processor and a second communication path connecting the modem and the storage device without passing through the application processor.
    Type: Grant
    Filed: March 11, 2019
    Date of Patent: April 28, 2020
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Chang-eun Choi, Su Hwa Yoo, Hwaseok Oh
  • Publication number: 20190205036
    Abstract: A computing device and a method of operating the same are provided. The computing device includes a modem that communicates with an external device, a storage device, an application processor that accesses the storage device, and a switch that selectively provides one of a first communication path connecting the modem and the application processor and a second communication path connecting the modem and the storage device without passing through the application processor.
    Type: Application
    Filed: March 11, 2019
    Publication date: July 4, 2019
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Chang-eun CHOI, Su Hwa YOO, Hwaseok OH
  • Patent number: 10254974
    Abstract: A computing device and a method of operating the same are provided. The computing device includes a modem that communicates with an external device, a storage device, an application processor that accesses the storage device, and a switch that selectively provides one of a first communication path connecting the modem and the application processor and a second communication path connecting the modem and the storage device without passing through the application processor.
    Type: Grant
    Filed: November 15, 2017
    Date of Patent: April 9, 2019
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Chang-Eun Choi, Su Hwa Yoo, Hwaseok Oh
  • Patent number: 10146627
    Abstract: Embodiments of the inventive concept include computer-implemented method for shadowing one or more boot images of a mobile device. The technique can include duplicating boot images to shadow partitions in a user area of a non-volatile memory device such as a flash memory. The technique can include detecting boot image corruption, and causing a mobile device to boot from the shadow partitions. The technique can include dynamically shadowing and releasing blocks used by the shadow partitions. The technique can include boot failure recovery and bad image preservation through firmware flash translation layer (FTL) logical to physical mapping updates. Boot image corruption failures can be recovered from and/or debugged using the shadow partitions.
    Type: Grant
    Filed: October 5, 2017
    Date of Patent: December 4, 2018
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Yang Yu, Chang-Eun Choi, Kyung Ho Kim, Walter Jun, Wonchuri Zoo, Robert Brennan
  • Patent number: 10127063
    Abstract: An embodiment includes a system, comprising: a device configured to present a logical device and enable a virtual device in response to a control signal; and a processor coupled to the device and configured to: present the logical device through a first device interface; transmit the control signal to the device to enable the virtual device; and after the virtual device is enabled, present the virtual device through a second device interface.
    Type: Grant
    Filed: June 27, 2017
    Date of Patent: November 13, 2018
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Chang-Eun Choi, Bin Lu, Yang Yu, Karnik Shah, Hingkwan Huen
  • Publication number: 20180136853
    Abstract: A computing device and a method of operating the same are provided. The computing device includes a modem that communicates with an external device, a storage device, an application processor that accesses the storage device, and a switch that selectively provides one of a first communication path connecting the modem and the application processor and a second communication path connecting the modem and the storage device without passing through the application processor.
    Type: Application
    Filed: November 15, 2017
    Publication date: May 17, 2018
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: CHANG-EUN CHOI, SU HWA YOO, HWASEOK OH
  • Publication number: 20180032403
    Abstract: Embodiments of the inventive concept include computer-implemented method for shadowing one or more boot images of a mobile device. The technique can include duplicating boot images to shadow partitions in a user area of a non-volatile memory device such as a flash memory. The technique can include detecting boot image corruption, and causing a mobile device to boot from the shadow partitions. The technique can include dynamically shadowing and releasing blocks used by the shadow partitions. The technique can include boot failure recovery and bad image preservation through firmware flash translation layer (FTL) logical to physical mapping updates. Boot image corruption failures can be recovered from and/or debugged using the shadow partitions.
    Type: Application
    Filed: October 5, 2017
    Publication date: February 1, 2018
    Inventors: Yang YU, Chang-Eun CHOI, Kyung Ho KIM, Walter JUN, Wonchuri ZOO, Robert BRENNAN
  • Patent number: 9823972
    Abstract: Embodiments of the inventive concept include computer-implemented method for shadowing one or more boot images of a mobile device. The technique can include duplicating boot images to shadow partitions in a user area of a non-volatile memory device such as a flash memory. The technique can include detecting boot image corruption, and causing a mobile device to boot from the shadow partitions. The technique can include dynamically shadowing and releasing blocks used by the shadow partitions. The technique can include boot failure recovery and bad image preservation through firmware flash translation layer (FTL) logical to physical mapping updates. Boot image corruption failures can be recovered from and/or debugged using the shadow partitions.
    Type: Grant
    Filed: March 19, 2015
    Date of Patent: November 21, 2017
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Yang Yu, Chang-Eun Choi, Kyung Ho Kim, Walter Jun, Wonchuri Zoo, Robert Brennan
  • Publication number: 20170300348
    Abstract: An embodiment includes a system, comprising: a device configured to present a logical device and enable a virtual device in response to a control signal; and a processor coupled to the device and configured to: present the logical device through a first device interface; transmit the control signal to the device to enable the virtual device; and after the virtual device is enabled, present the virtual device through a second device interface.
    Type: Application
    Filed: June 27, 2017
    Publication date: October 19, 2017
    Inventors: Chang-Eun CHOI, Bin LU, Yang YU, Karnik SHAH, Hingkwan HUEN
  • Patent number: 9720855
    Abstract: An embodiment includes a system, comprising: a device configured to present a logical device and enable a virtual device in response to a control signal; and a processor coupled to the device and configured to: present the logical device through a first device interface; transmit the control signal to the device to enable the virtual device; and after the virtual device is enabled, present the virtual device through a second device interface.
    Type: Grant
    Filed: April 1, 2015
    Date of Patent: August 1, 2017
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Chang-Eun Choi, Bin Lu, Yang Yu, Karnik Shah, Hingkwan Huen
  • Publication number: 20160117225
    Abstract: Embodiments of the inventive concept include computer-implemented method for shadowing one or more boot images of a mobile device. The technique can include duplicating boot images to shadow partitions in a user area of a non-volatile memory device such as a flash memory. The technique can include detecting boot image corruption, and causing a mobile device to boot from the shadow partitions. The technique can include dynamically shadowing and releasing blocks used by the shadow partitions. The technique can include boot failure recovery and bad image preservation through firmware flash translation layer (FTL) logical to physical mapping updates. Boot image corruption failures can be recovered from and/or debugged using the shadow partitions.
    Type: Application
    Filed: March 19, 2015
    Publication date: April 28, 2016
    Inventors: Yang YU, Chang-Eun CHOI, Kyung Ho KIM, Walter JUN, Wonchuri ZOO, Robert BRENNAN
  • Publication number: 20160055011
    Abstract: An embodiment includes a system, comprising: a device configured to present a logical device and enable a virtual device in response to a control signal; and a processor coupled to the device and configured to: present the logical device through a first device interface; transmit the control signal to the device to enable the virtual device; and after the virtual device is enabled, present the virtual device through a second device interface.
    Type: Application
    Filed: April 1, 2015
    Publication date: February 25, 2016
    Inventors: Chang-Eun CHOI, Bin LU, Yang YU, Karnik SHAH, Hingkwan HUEN
  • Patent number: 8894935
    Abstract: A monitoring system for a selective catalyst reduction system according to the present invention includes a selective catalyst reduction system that reacts with ammonia and reduces NOx, a first NOx sensor that is disposed upstream of the selective catalyst reduction system and measures the amount of the NOx that flows into the selective catalyst reduction system, a second NOx sensor that is disposed downstream of the selective catalyst reduction system and measures the amount of the NOx that is reduced, an injector that is disposed between the first NOx sensor and the selective catalyst reduction system and injects a urea solution, and a control portion that calculates reduction efficiency based on signals that are detected from the first NOx sensor and the second NOx sensor, determines the necessary amount of the ammonia according to the reduction efficiency, and controls the injection amount of the urea solution through the injector.
    Type: Grant
    Filed: August 18, 2008
    Date of Patent: November 25, 2014
    Assignee: Hyundai Motor Company
    Inventor: Chang Eun Choi
  • Patent number: 8892842
    Abstract: A memory system includes a nonvolatile memory device, a memory controller for controlling the nonvolatile memory device and a virtual data interface layer that manages reading and/or writing of patterned data from/to the nonvolatile memory device. In a read operation, the virtual data interface layer generates patterned data that is requested to be read. Accordingly, a read speed of the memory system may be improved.
    Type: Grant
    Filed: February 25, 2011
    Date of Patent: November 18, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jung Wook Kim, Chang-Eun Choi, Taekeun Jeon, Kyoungryun Bae, Hyun-Ju Kim
  • Patent number: 8417872
    Abstract: A memory card system and related write method are disclosed. The method includes receiving a write request for a predetermined page; performing a write operation on a first log block that corresponds to a first data block including the page; receiving an update request for the page; and performing a write operation on a second log block that corresponds to the first data block. The memory card system includes: at least one non-volatile memory including a data block and a log block for updating the data block; and a memory controller controlling an operation of the non-volatile memory. During a write operation for a predetermined page, the controller controls writing of a first log block corresponding to a first data block including the predetermined page, and controls writing of a second log block during an update operation of the predetermined page.
    Type: Grant
    Filed: January 23, 2009
    Date of Patent: April 9, 2013
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Kyoung-Ryun Bae, Hee-Tak Shin, Jung-Hoon Kim, Jong-hwan Lee, Yong-Hyeon Kim, Chang-Eun Choi
  • Patent number: 8386696
    Abstract: A method of writing partial page data in a non-volatile memory device includes, reading data from a second block when the size of a last page of data to be written in a page of a first block is smaller than a size of the page of the first block, wherein a size of the read data is given by the size of the page of the first block minus the size of the last page of data; storing together data of the last page and the data read from the second block in a buffer; and writing the data stored in the buffer in the first block.
    Type: Grant
    Filed: February 13, 2008
    Date of Patent: February 26, 2013
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jin-hyuk Kim, Chang-eun Choi, Young-gon Kim