Patents by Inventor Change Hee Lee

Change Hee Lee 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: 9460800
    Abstract: A memory system including non-volatile memory devices and a corresponding refresh method are disclosed. The method groups memory blocks of the non-volatile memory devices into memory groups, determines a refresh sequence for the memory groups, and refreshes the memory groups in accordance with the refresh sequence.
    Type: Grant
    Filed: April 11, 2016
    Date of Patent: October 4, 2016
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Change-Hee Lee, Jang-Hwan Kim, Jung-Been Im, Dong-Hyun Song
  • Publication number: 20160225455
    Abstract: A memory system including non-volatile memory devices and a corresponding refresh method are disclosed. The method groups memory blocks of the non-volatile memory devices into memory groups, determines a refresh sequence for the memory groups, and refreshes the memory groups in accordance with the refresh sequence.
    Type: Application
    Filed: April 11, 2016
    Publication date: August 4, 2016
    Inventors: CHANGE-HEE LEE, JANG-HWAN KIM, JUNG-BEEN IM, DONG-HYUN SONG
  • Patent number: 9336889
    Abstract: A memory system including non-volatile memory devices and a corresponding refresh method are disclosed. The method groups memory blocks of the non-volatile memory devices into memory groups, determines a refresh sequence for the memory groups, and refreshes the memory groups in accordance with the refresh sequence.
    Type: Grant
    Filed: February 10, 2014
    Date of Patent: May 10, 2016
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Change-Hee Lee, Jang-Hwan Kim, Jung-Been Im, Dong-Hyun Song
  • Patent number: 9128618
    Abstract: A non-volatile memory controller, system and method capable of processing a next request as an interrupt before completing a current operation are disclosed. The non-volatile memory system includes a first memory storing meta data loaded from a flash memory; a second memory storing the meta data copied from the first memory; and a flash memory controller copying the meta data from the first memory to the second memory, changing the meta data in the second memory, and then re-copying the changed meta data from the second memory to the first memory during a first-type operation that requires changes in the meta data.
    Type: Grant
    Filed: December 12, 2014
    Date of Patent: September 8, 2015
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Change-hee Lee, Jung-Been Im, Jung-Yeon Yoon, Young-Goo Ko, Dong-Hyun Song
  • Publication number: 20140160858
    Abstract: A memory system including non-volatile memory devices and a corresponding refresh method are disclosed. The method groups memory blocks of the non-volatile memory devices into memory groups, determines a refresh sequence for the memory groups, and refreshes the memory groups in accordance with the refresh sequence.
    Type: Application
    Filed: February 10, 2014
    Publication date: June 12, 2014
    Inventors: Change-Hee Lee, Jang-Hwan Kim, Jung-Been Im, Dong-Hyun Song
  • Patent number: 8675406
    Abstract: A memory system including non-volatile memory devices and a corresponding refresh method are disclosed. The method groups memory blocks of the non-volatile memory devices into memory groups, determines a refresh sequence for the memory groups, and refreshes the memory groups in accordance with the refresh sequence.
    Type: Grant
    Filed: July 5, 2011
    Date of Patent: March 18, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Change-Hee Lee, Jang-Hwan Kim, Jung-Been Im, Dong-Hyun Song
  • Publication number: 20130212320
    Abstract: A non-volatile memory controller, system and method capable of processing a next request as an interrupt before completing a current operation are disclosed. The non-volatile memory system includes a first memory storing meta data loaded from a flash memory; a second memory storing the meta data copied from the first memory; and a flash memory controller copying the meta data from the first memory to the second memory, changing the meta data in the second memory, and then re-copying the changed meta data from the second memory to the first memory during a first-type operation that requires changes in the meta data.
    Type: Application
    Filed: March 14, 2013
    Publication date: August 15, 2013
    Inventors: Change-hee Lee, Jung-Been Im, Jung-Yeon Yoon, Young-Goo Ko, Dong-Hyun Song
  • Patent number: 8417875
    Abstract: A non-volatile memory controller, system and method capable of processing a next request as an interrupt before completing a current operation are disclosed. The non-volatile memory system includes a first memory storing meta data loaded from a flash memory; a second memory storing the meta data copied from the first memory; and a flash memory controller copying the meta data from the first memory to the second memory, changing the meta data in the second memory, and then re-copying the changed meta data from the second memory to the first memory during a first-type operation that requires changes in the meta data.
    Type: Grant
    Filed: April 15, 2010
    Date of Patent: April 9, 2013
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Change-Hee Lee, Jung Been Im, Jung-Yeon Yoon, Young-Goo Ko, Dong Hyun Song
  • Publication number: 20120177371
    Abstract: The present invention discloses a multiple star wavelength division multiplexing passive optical network system using a wavelength assignment method. In a multiple star wavelength division multiplexing passive optical network system using a wavelength assignment method according to the present invention, only one WDM-PON system can provides services for a plurality of subscribers who is distributed in a wide range of area through multiple starring, by setting one or more band for transmitting up-stream signals as an up-stream basic band and one or more band for transmitting down-stream signals as a down-stream basic band, respectively, and by dividing each of the up-stream basic band and the down-stream basic band into a plurality of wavelength sub-bands and assigning the divided sub-bands to different areas using a wavelength division multiplexer/de-multiplexer which splits a band into two or more sub-bands.
    Type: Application
    Filed: January 18, 2012
    Publication date: July 12, 2012
    Applicant: Korea Advaned Institute of Science and Technology
    Inventors: Change-Hee Lee, Sang-Mook Lee, Sil-Gu Mun
  • Publication number: 20120008394
    Abstract: A memory system including non-volatile memory devices and a corresponding refresh method are disclosed. The method groups memory blocks of the non-volatile memory devices into memory groups, determines a refresh sequence for the memory groups, and refreshes the memory groups in accordance with the refresh sequence.
    Type: Application
    Filed: July 5, 2011
    Publication date: January 12, 2012
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Change-Hee Lee, Jang-Hwan Kim, Jung-Been Im, Dong-Hyun Song
  • Publication number: 20100268871
    Abstract: A non-volatile memory controller, system and method capable of processing a next request as an interrupt before completing a current operation are disclosed. The non-volatile memory system includes a first memory storing meta data loaded from a flash memory; a second memory storing the meta data copied from the first memory; and a flash memory controller copying the meta data from the first memory to the second memory, changing the meta data in the second memory, and then re-copying the changed meta data from the second memory to the first memory during a first-type operation that requires changes in the meta data.
    Type: Application
    Filed: April 15, 2010
    Publication date: October 21, 2010
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Change-Hee LEE, Jung Been IM, Jung-Yeon YOON, Young-Goo KO, Dong Hyun SONG
  • Patent number: 7785504
    Abstract: A fabricating method of a color filter array substrate includes the steps of forming a black matrix on a substrate, forming red, green, blue color filters on the substrate on which the black matrix is formed, forming an overcoat layer including a white color filter on the substrate on which the red, green, and blue color filters are formed, aligning a flat panel soft mold to the overcoat layer; and smoothing the overcoat layer using the flat panel soft mold.
    Type: Grant
    Filed: June 24, 2005
    Date of Patent: August 31, 2010
    Assignee: LG Display Co., Ltd.
    Inventors: Gee Sung Chae, Gyoo Chul Jo, Yong Sup Hwang, Jin Wuk Kim, Change Hee Lee