Patents by Inventor In-sik Ryu

In-sik Ryu 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: 20150325214
    Abstract: A data driver includes a random delay unit configured to receive and delay a first control signal and to generate a random delay signal based on the delay, a latch unit configured to store data in response to the random delay signal, a digital-analog conversion unit configured to convert the data from the latch unit into an analog signal, and an output unit configured to amplify and output the analog signal, wherein the time delay between the first control signal and the random delay signal is random.
    Type: Application
    Filed: February 23, 2015
    Publication date: November 12, 2015
    Applicant: Dongbu HiTek Co., Ltd.
    Inventor: Choong Sik RYU
  • Publication number: 20150294635
    Abstract: A gate driver is disclosed. The disclosed gate driver includes a shift register configured to generate a shift signal. The shift signal is based on a gate start signal and a gate clock signal. The gate driver further includes a gate drive signal generator configured to generate a gate drive signal. The gate drive signal is based on a gate control signal and the shift signal. The rising edge of the gate control signal precedes the falling edge of the shift signal, and the falling edge of the gate control signal follows the falling edge of the shift signal. The gate drive signal falls from a second voltage to a third voltage in response to the falling edge of the shift signal and rises from the third voltage to a first voltage in response to the falling edge of the gate control signal. The first voltage is higher than the third voltage but lower than the second voltage.
    Type: Application
    Filed: June 27, 2014
    Publication date: October 15, 2015
    Inventors: Choong Sik Ryu, Eun Mee Lee
  • Patent number: 9118282
    Abstract: Provided are a power amplifier and a method thereof. The power amplifier power amplifier includes: a main amplifying unit receiving power; an auxiliary amplifying unit connected in parallel to the main amplifying unit; and a Balun transformer combined with the main amplifying unit and the auxiliary amplifying unit. Respectively different bias voltages are applied to the main amplifying unit and the auxiliary amplifying unit.
    Type: Grant
    Filed: May 21, 2012
    Date of Patent: August 25, 2015
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Yun Ho Choi, Nam Sik Ryu
  • Patent number: 9009433
    Abstract: Disclosed are an apparatus and method for recycling areas of a data storage device by relocating data. In one embodiment, a method may comprise selecting a first storage area based on a quantity of obsolete data in the first storage area, moving valid data from the first storage area to a second storage area, and setting memory spaces corresponding to the first storage area as available memory for storing other data. Another embodiment may further comprise selecting a physical address-based move operation or a logical address-based move operation based on a number of sets of contiguous valid memory spaces in the first storage area, wherein the physical address-based move comprises moving data based on physical data addresses, and logical address-based moved comprises moving data based on logical block addresses.
    Type: Grant
    Filed: April 27, 2012
    Date of Patent: April 14, 2015
    Assignee: Seagate Technology LLC
    Inventor: In Sik Ryu
  • Patent number: 8955141
    Abstract: Provided is a method for digital rights management of a compressed file created by compressing one or more original files.
    Type: Grant
    Filed: June 30, 2008
    Date of Patent: February 10, 2015
    Assignee: Fasco.com Co., Ltd.
    Inventors: Joon Tae Ji, Young Sik Ryu, Jong Il Lee
  • Publication number: 20150004422
    Abstract: There is provided a method of manufacturing a nanofiber composite sheet, the method including preparing a base sheet, surface-treating the base sheet, and forming a substrate layer having a nanofiber structure on the surface-treated base sheet.
    Type: Application
    Filed: October 22, 2013
    Publication date: January 1, 2015
    Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Hae Rim KIM, Jea Sik RYU, Sun Ok KIM, Jin Wook NA, Kwon Min JEON, Sun Young KIM
  • Patent number: 8883044
    Abstract: Disclosed are a multi-functional resin composite material including (A) a thermoplastic resin, (B) a nickel-coated carbon fiber, (C) a carbon nanotube, and (D) an inorganic material having a volume resistance of about 10?3 ?·m or less and a relative permeability of about 5000 or more, and a molded product fabricated using the same.
    Type: Grant
    Filed: June 22, 2012
    Date of Patent: November 11, 2014
    Assignee: Cheil Industries Inc.
    Inventors: Sung-Jun Kim, Young-Sik Ryu
  • Patent number: 8656097
    Abstract: A method of controlling a hybrid hard disk drive. The method includes receiving a read command from a host; searching metadata of a file to be read; determining whether the metadata satisfies a predetermined setup condition; and if the metadata satisfies the setup conditions, copying the file to be read, from a first storage device and storing the file in a second storage device.
    Type: Grant
    Filed: September 11, 2009
    Date of Patent: February 18, 2014
    Assignee: Seagate Technology International
    Inventors: Sang-hoon Lee, Se-wook Na, In-sik Ryu
  • Publication number: 20130299121
    Abstract: The present disclosure relates to the preparation of a polymer composite material for building air conditioning or dehumidification having superior water-adsorbing ability, durability and antibacterial properties by electro spinning. Specifically, the disclosed method for preparing a polymer composite material for building air conditioning or dehumidification includes: (S1) adding a crosslinking agent or a crosslinking agent and a porous filler for conferring durability and antibacterial properties into a hydrophilic polymer solution antibacterial properties to prepare a polymer composite material solution; (S2) electrospinning the polymer composite material solution to prepare a nanofiber sheet; and (S3) crosslinking the nanofiber sheet by heat-treatment.
    Type: Application
    Filed: December 15, 2010
    Publication date: November 14, 2013
    Inventors: Young-soo Ahn, Jeong-gu Yeo, Kuck-tack Chue, Churl-hee Cho, Chang-kook Hong, Sang-youn Oh, Se-hee Kim, Hyeong-seon Oh, Jae-sik Ryu, Seung-hyun Shin
  • Patent number: 8583879
    Abstract: A data storage device including a storing medium to shingle write and a controller to access the storing medium so that data is sequentially written on the storing medium using a mapping table based on Logical Block Address (LBA) included in a write command.
    Type: Grant
    Filed: February 8, 2011
    Date of Patent: November 12, 2013
    Assignee: Seagate Technology International
    Inventors: Se-wook Na, In Sik Ryu
  • Patent number: 8527735
    Abstract: Provided are a data storage medium accessing method of accessing a data storage medium of a data storage device according to a virtual address (VA), the data storage device to access the data storage medium according to the VA, and a computer readable recording medium having recorded thereon a program to access the data storage medium accessing method.
    Type: Grant
    Filed: June 21, 2010
    Date of Patent: September 3, 2013
    Assignee: Seagate Technology International
    Inventors: In-sik Ryu, Moon-chol Park, Se-wook Na, Jae-sung Lee
  • Patent number: 8468543
    Abstract: A computer system includes a DRM client system in which a plurality of DRM clients are installed, comprising: a virtual OS managing unit that separates a kernel of an actual operating system installed in the DRM client system to generate and manage a virtual operating system; a branch process information managing unit that manages branch process information according to a type of a document that a user attempts to read; and an application program branching unit that analyzes the branch process information and executes DRM client agent for managing the DRM client in an actual OS region or a virtual OS region according to the type of a document that the user attempts to read to allow the user to read the document.
    Type: Grant
    Filed: January 25, 2008
    Date of Patent: June 18, 2013
    Assignee: Fasoo.Com.Co.Ltd.
    Inventors: Young Sik Ryu, Kyoung Ho Jeon
  • Publication number: 20130127528
    Abstract: Provided are a power amplifier and a method thereof. The power amplifier power amplifier includes: a main amplifying unit receiving power; an auxiliary amplifying unit connected in parallel to the main amplifying unit; and a balloon transformer combined with the main amplifying unit and the auxiliary amplifying unit. Respectively different bias voltages are applied to the main amplifying unit and the auxiliary amplifying unit.
    Type: Application
    Filed: May 21, 2012
    Publication date: May 23, 2013
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Yun Ho CHOI, Nam Sik Ryu
  • Publication number: 20130117520
    Abstract: Disclosed are an apparatus and method for recycling areas of a data storage device by relocating data. In one embodiment, a method may comprise selecting a first storage area based on a quantity of obsolete data in the first storage area, moving valid data from the first storage area to a second storage area, and setting memory spaces corresponding to the first storage area as available memory for storing other data. Another embodiment may further comprise selecting a physical address-based move operation or a logical address-based move operation based on a number of sets of contiguous valid memory spaces in the first storage area, wherein the physical address-based move comprises moving data based on physical data addresses, and logical address-based moved comprises moving data based on logical block addresses.
    Type: Application
    Filed: April 27, 2012
    Publication date: May 9, 2013
    Applicant: Seagate Technology LLC
    Inventor: In Sik Ryu
  • Patent number: 8421787
    Abstract: A circuit and method for driving a line repair amplifier includes a line repair amplifier which can be driven by using a single side input which can use an amplifier which drives a gray high side only and an amplifier which drives a gray low side only separately in a liquid crystal display device which uses a line repair amplifier.
    Type: Grant
    Filed: December 22, 2009
    Date of Patent: April 16, 2013
    Assignee: Dongbu HiTek Co., Ltd.
    Inventor: Choong-Sik Ryu
  • Publication number: 20130031317
    Abstract: Apparatuses and methods for redirecting data writes are disclosed. In one embodiment a controller may be configured to receive a command including write data and address data identifying a target zone of a data storage medium; determine whether the target zone contains sufficient available data sectors to store the write data; and record the write data to a common area of a different zone when the target zone does not contain sufficient available data sectors, the common area available to store data when a target zone lacks sufficient available data sectors. In another embodiment, a method may comprise receiving a write command identifying a target zone of a data storage medium; determining whether the target zone contains sufficient available data sectors to store the write data; and recording the write data to a common area of a different zone when the target zone does not contain sufficient available data sectors.
    Type: Application
    Filed: April 27, 2012
    Publication date: January 31, 2013
    Applicant: Seagate Technology LLC
    Inventors: In Sik Ryu, Se Wook Na
  • Publication number: 20120319055
    Abstract: Disclosed are a multi-functional resin composite material including (A) a thermoplastic resin, (B) a nickel-coated carbon fiber, (C) a carbon nanotube, and (D) an inorganic material having a volume resistance of about 10?3 ?·m or less and a relative permeability of about 5000 or more, and a molded product fabricated using the same.
    Type: Application
    Filed: June 22, 2012
    Publication date: December 20, 2012
    Applicant: CHEIL INDUSTRIES INC.
    Inventors: Sung-Jun KIM, Young-Sik RYU
  • Patent number: 8307162
    Abstract: Methods and apparatus for cache flush control and write re-ordering in a data storage system are provided. A cache flush control method includes cache flushing information stored in a cache memory to a first storage apparatus of a plurality of storage apparatuses included in a data storage system when a cache flush condition is generated, and performing a write command in a second storage apparatus of the plurality of storage apparatuses which has a write speed lower than the first storage apparatus according to information stored in the first storage apparatus processed with the cache flush.
    Type: Grant
    Filed: July 9, 2009
    Date of Patent: November 6, 2012
    Assignee: Seagate Technology LLC
    Inventors: In-sik Ryu, Sang-hoon Lee, Se-wook Na, Hye-jeong Nam
  • Patent number: 8291185
    Abstract: A data storing location managing method including generating an access frequency of a storing area accessed in a first storage apparatus according to a command received, copying data stored in the storing area of the first storage apparatus to a storing area of a second storage apparatus when the access frequency of the storing area of the first storage apparatus is greater than a reference value, and replacing location information of the storing area of the first storage apparatus with location information of the storing area of the second storage apparatus.
    Type: Grant
    Filed: July 29, 2009
    Date of Patent: October 16, 2012
    Assignee: Seagate Technology LLC
    Inventors: Se-wook Na, Sang-hoon Lee, In-sik Ryu, Hye-jeong Nam
  • Patent number: 8222321
    Abstract: The present invention provides a thermoplastic resin composition comprising (A) a thermoplastic resin, and (B) a carbon nanofiber-metal composite including a plurality of laminated truncated, conic graphenes continuously coated with a metal. The thermoplastic resin composition according to the present invention can have excellent EMI shielding properties.
    Type: Grant
    Filed: December 15, 2010
    Date of Patent: July 17, 2012
    Assignee: Cheil Industries Inc.
    Inventors: Kyoung Tae Youm, Young Sik Ryu, Young Sil Lee