Patents by Inventor Youjip Won

Youjip Won 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: 20220188044
    Abstract: Provided is a method of controlling a RAID controller, the method including generating, by the RAID controller, a command sequence, and transmitting, by the RAID controller, when a first cache barrier command included in the command sequence is identified, at least one cache barrier command to an arbitrary disk constituting a RAID before transmitting a first write command arranged after the first cache barrier command in the command sequence to the arbitrary disk.
    Type: Application
    Filed: November 26, 2020
    Publication date: June 16, 2022
    Inventor: Youjip WON
  • Patent number: 9841995
    Abstract: Provided is a method and apparatus for an adaptive context switching for a fast block input/output. The adaptive context switching method may include: requesting, by a process, an input/output device to perform an input/output of data; comparing a Central Processing Unit (CPU) effectiveness based on whether the context switching is performed; and performing the input/output through the context switching to a driver context of the input/output device, or directly performing, by the process, the input/output based on a comparison result of the CPU effectiveness.
    Type: Grant
    Filed: July 30, 2014
    Date of Patent: December 12, 2017
    Assignee: IUCF-HYU (INDUSTRY-UNIVERSITY COOPERATION FOUNDATION HANYANG UNIVERSITY)
    Inventor: Youjip Won
  • Publication number: 20140337858
    Abstract: Provided is a method and apparatus for an adaptive context switching for a fast block input/output. The adaptive context switching method may include: requesting, by a process, an input/output device to perform an input/output of data; comparing a Central Processing Unit (CPU) effectiveness based on whether the context switching is performed; and performing the input/output through the context switching to a driver context of the input/output device, or directly performing, by the process, the input/output based on a comparison result of the CPU effectiveness.
    Type: Application
    Filed: July 30, 2014
    Publication date: November 13, 2014
    Inventor: Youjip WON
  • Patent number: 8826295
    Abstract: Provided is a method and apparatus for an adaptive context switching for a fast block input/output. The adaptive context switching method may include: requesting, by a process, an input/output device to perform an input/output of data; comparing a Central Processing Unit (CPU) effectiveness based on whether the context switching is performed; and performing the input/output through the context switching to a driver context of the input/output device, or directly performing, by the process, the input/output based on a comparison result of the CPU effectiveness.
    Type: Grant
    Filed: May 20, 2011
    Date of Patent: September 2, 2014
    Assignee: IUCF-HYU (Industry-University Cooperation Foundation Hangyang University)
    Inventor: Youjip Won
  • Patent number: 8811106
    Abstract: Disclosed is a non-volatile memory data protecting device and method. The non-volatile memory data protecting device that is used for protecting non-volatile memory data when a power is shut down in a system, may include a signal delay unit to delay a drop in voltage of an input/output line, a power shutdown sensor to sense power shutdown of a system, and a controller to control the signal delay unit in response to whether the system is shut down.
    Type: Grant
    Filed: April 22, 2013
    Date of Patent: August 19, 2014
    Assignee: SK Hynix Inc.
    Inventor: Youjip Won
  • Publication number: 20130235690
    Abstract: Disclosed is a non-volatile memory data protecting device and method. The non-volatile memory data protecting device that is used for protecting non-volatile memory data when a power is shut down in a system, may include a signal delay unit to delay a drop in voltage of an input/output line, a power shutdown sensor to sense power shutdown of a system, and a controller to control the signal delay unit in response to whether the system is shut down.
    Type: Application
    Filed: April 22, 2013
    Publication date: September 12, 2013
    Applicant: IUCF-HYU (Industry-University Cooperation Foundation Hanyang University)
    Inventor: Youjip WON
  • Patent number: 8446795
    Abstract: Disclosed is a non-volatile memory data protecting device and method. The non-volatile memory data protecting device (200) that is used for protecting non-volatile memory data when a power is shut down in a system, may include a signal delay unit (230) to delay a drop in voltage of an input/output line, a power shutdown sensor (210) to sense power shutdown of a system, and a controller (220) to control the signal delay unit in response to whether the system is shut down.
    Type: Grant
    Filed: July 31, 2009
    Date of Patent: May 21, 2013
    Assignee: IUCF-HYU (Industry-University Cooperation Foundation Hanyang University)
    Inventor: Youjip Won
  • Publication number: 20110239225
    Abstract: Provided is a method and apparatus for an adaptive context switching for a fast block input/output. The adaptive context switching method may include: requesting, by a process, an input/output device to perform an input/output of data; comparing a Central Processing Unit (CPU) effectiveness based on whether the context switching is performed; and performing the input/output through the context switching to a driver context of the input/output device, or directly performing, by the process, the input/output based on a comparison result of the CPU effectiveness.
    Type: Application
    Filed: May 20, 2011
    Publication date: September 29, 2011
    Applicant: IUCF-HYU (INDUSTRY-UNIVERSITY COOPERATION FOUNDATION HANYANG UNIVERSITY)
    Inventor: Youjip Won
  • Publication number: 20110141839
    Abstract: Disclosed is a non-volatile memory data protecting device and method. The non-volatile memory data protecting device (200) that is used for protecting non-volatile memory data when a power is shut down in a system, may include a signal delay unit (230) to delay a drop in voltage of an input/output line, a power shutdown sensor (210) to sense power shutdown of a system, and a controller (220) to control the signal delay unit in response to whether the system is shut down.
    Type: Application
    Filed: July 31, 2009
    Publication date: June 16, 2011
    Inventor: Youjip Won
  • Patent number: 7100057
    Abstract: A method and device for retrieving data in low-power is provided. More specifically, it relates to a method and device for minimizing power consumption while retrieving the continuous media data from a disk drive for the purpose of real-time playback. The data reproducing device reproduces multimedia data by a determined playback strategy after it computes power consumption values according to various playback strategies and retrieves data from a storage medium by a playback strategy having the least power consumption by means of comparing respective power consumption values.
    Type: Grant
    Filed: April 24, 2003
    Date of Patent: August 29, 2006
    Assignee: Hanyang Hak Won Co. Ltd.
    Inventors: Youjip Won, Jungwan Choi
  • Publication number: 20040081045
    Abstract: A method and device for retrieving data in low-power is provided. More specifically, it relates to a method and device for minimizing power consumption while retrieving the continuous media data from a disk drive for the purpose of real-time playback. The data reproducing device reproduces multimedia data by a determined playback strategy after it computes power consumption values according to various playback strategies and retrieves data from a storage medium by a playback strategy having the least power consumption by means of comparing respective power consumption values.
    Type: Application
    Filed: April 24, 2003
    Publication date: April 29, 2004
    Inventors: Youjip Won, Jungwan Choi