Patents by Inventor Sung Dae Kim

Sung Dae Kim 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: 20050238389
    Abstract: An agitator according to the present invention comprises a container for storing a compound of at least two materials, and an agitation unit mounted in the container to agitate the compound. The agitation unit may comprise a plurality of agitators of which at least one agitator can independently rotate.
    Type: Application
    Filed: December 30, 2004
    Publication date: October 27, 2005
    Inventors: Myoung-Chan Kim, Gwoang-Joe Seorl, Sung-Dae Kim
  • Publication number: 20050185043
    Abstract: A multi-head gear pump, which includes a plurality of aligned pumping heads. Each of the pumping heads includes a housing with an inlet and an outlet, and a pair of pumping gears meshing with each other within the housing and pumping a fluid from the inlet to the outlet while rotating. A power transfer unit is disposed between the plurality of pumping heads and transfers the torque of one of a pair of pumping gears of a preceding pumping head from among the plurality of pumping heads to one of a pair of pumping gears of a subsequent pumping head. A buffer chamber isolates the plurality of pumping heads from one another and accommodates the power transfer unit thereinside.
    Type: Application
    Filed: February 22, 2005
    Publication date: August 25, 2005
    Applicant: Samsung Electronics Co., Ltd.
    Inventor: Sung-dae Kim
  • Publication number: 20050185042
    Abstract: A multi-head gear pump including: a motor; first and second pumping heads, each of which includes a housing with an inlet and an outlet, and a pair of pumping gears meshing with each other within the housing and pumping a fluid from the inlet to the outlet while rotating. The first and second pumping heads are driven simultaneously by the motor. The first and second pumping heads have different pumping capacities.
    Type: Application
    Filed: February 22, 2005
    Publication date: August 25, 2005
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Sung-dae Kim, Yong su Kim
  • Publication number: 20050053398
    Abstract: A developing device for a liquid electrophotographic image forming apparatus is provided. The developing device may have a developing roller, which supplies ink to a photosensitive body on which an electrostatic latent image is formed and develops the electrostatic latent image. The apparatus may include an ink reservoir in which ink supplied to the developing roller is accommodated, and an ink removal unit, which removes ink remaining in the ink reservoir after a development operation is performed. The ink removal unit may comprise an ink removal member rotatably installed in the ink reservoir that exhausts ink through a through hole formed under the ink reservoir. A driving member rotates the ink removal member. An ink cartridge stores ink exhausted through the through hole.
    Type: Application
    Filed: August 12, 2004
    Publication date: March 10, 2005
    Inventors: Sung-dae Kim, Kyu-cheol Shin, In-yong Song, Joong-gwang Shin
  • Publication number: 20040193947
    Abstract: A writable-once optical recording medium such as a BD-WO, and a method and apparatus for managing the writable-once optical recording medium, are provided. The recording medium includes at least one recording layer having at least one temporary defect management area and at least one final defect management area. The method includes recording temporary defect management information in the temporary defect management area of the recording medium, the temporary defect management information including disc usage management information indicating a recording use status of the recording medium; and transferring, at a transfer stage, the temporary defect management information from the temporary defect management area to the final defect management area of the recording medium.
    Type: Application
    Filed: September 26, 2003
    Publication date: September 30, 2004
    Inventors: Yong Cheol Park, Sung Dae Kim
  • Publication number: 20040193946
    Abstract: A write-once optical recording medium, a method for allocating a defect management area of the write-once optical recording medium, and a method for allocating a spare area of the write-once optical recording medium are provided. A method of managing defects on a write-once optical recording medium having at least one recording layer includes the steps of allocating at least one temporary defect management area having a fixed size and at least one temporary defect management area having a variable size to said optical recording medium, respectively, recording defect management information on the at least one temporary defect management area having a fixed size and the at least one temporary defect management area having a variable size; and using the at least one temporary defect management area having a fixed size and the at least one temporary defect management area having a variable size is provided herein.
    Type: Application
    Filed: September 26, 2003
    Publication date: September 30, 2004
    Inventors: Yong Cheol Park, Sung Dae Kim
  • Publication number: 20040179445
    Abstract: A method of managing defects on a write-once optical recording medium having at least one recording layer is disclosed. The method of managing defects on the at least one recording layer comprises the steps of allocating at least one replacement area and a plurality of temporary defect management areas to the optical recording medium, wherein the temporary defect management areas are separately provided, and recording defect management information on at least one of the plurality of temporary defect management areas.
    Type: Application
    Filed: September 26, 2003
    Publication date: September 16, 2004
    Inventors: Yong Cheol Park, Sung Dae Kim
  • Publication number: 20040174793
    Abstract: A method and apparatus for recording on an optical recording medium, including the recording of management information, are described as a standard for the write-once Blu-ray disc. The management information is recorded in a management area of the disc, such as a temporary defect management area (TDMA), and includes record status information and update information. The record status information is a space bitmap (SBM) indicating whether a recording operation has been performed for a predetermined area of the disc, and the update information is SBM update information indicating whether the record status information is to be continuously managed. The SBM update information controls the state of an SBM-on/off function for each of a plurality of recording areas and may be in the form of either start position information and length information corresponding to the respective areas or an SBM update flag.
    Type: Application
    Filed: December 23, 2003
    Publication date: September 9, 2004
    Inventors: Yong Cheol Park, Sung Dae Kim
  • Publication number: 20040165496
    Abstract: The data structure on the recording medium includes a temporary defect management area storing a data block. The data block includes a space bit map and a temporary definition structure. The space bit map indicates recordation status of the data area, and the temporary definition structure provides a pointer to the space bit map.
    Type: Application
    Filed: February 24, 2004
    Publication date: August 26, 2004
    Inventors: Yong Cheol Park, Sung Dae Kim
  • Publication number: 20040165495
    Abstract: Disclosed is a write-once optical disc and method for managing a spare area thereof, the write-once optical disc possibly having a temporary defect management area within one or more spare areas. The method includes the steps of: allocating one or more spare areas including the temporary defect management area at an initial status of the optical disc; and during use of the optical disc, expanding the spare area allocated including the temporary defect management area to set a new spare area. By employing the above optical disc and method, it becomes possible to establish unified regulations on the structures of the spare area and temporary defect management area applicable to the write-once optical disc, so that usage efficiency of the optical disc can be improved.
    Type: Application
    Filed: February 20, 2004
    Publication date: August 26, 2004
    Inventors: Yong Cheol Park, Sung Dae Kim
  • Publication number: 20040160799
    Abstract: A write-once type optical disc and a method and apparatus for allocating a spare area on the write-once type optical disc are provided. The method includes allocating a data area on a recording medium of write-once type, and allocating a user data area and at least one spare area within the data area on the recording medium, the at least one spare area having a variable size, wherein a maximum recording capacity of the at least one spare area on the recording medium is less than a maximum recording capacity of at least one variable spare area on a rewritable type optical disc.
    Type: Application
    Filed: September 26, 2003
    Publication date: August 19, 2004
    Inventors: Yong Cheol Park, Sung Dae Kim
  • Publication number: 20040158768
    Abstract: A method and apparatus for managing a defective area on a optical recording medium, e.g., of writable once type, permits more efficient writing and management of defect list information or temporary defect list information for managing the defective area in a minimum recording size. The method includes writing data in a defective area existing on a high density optical disc, e.g., such as a BD-WO, in a spare area in place of the defective area, producing defect list information for access to the data replacement written in the spare area and writing in a particular area for defect management. The defect entries actually corresponding to the replacement written data, and writing location information of the next available spare area are written and managed as defect list information for management, or the writing location information of a location where replacement writing is possible is written and managed as defect definition structure information.
    Type: Application
    Filed: September 26, 2003
    Publication date: August 12, 2004
    Inventors: Yong Cheol Park, Sung Dae Kim
  • Publication number: 20040145980
    Abstract: An optical disc of write once type, a method and an apparatus of managing defect information on the optical disc of write once type, e.g., a BD-WO, are provided with a temporary defect management area (TDMA). The method includes preparing the temporary defect management area (TDMA) in which a temporary defect list (TDFL) is recorded as defect management information for managing a defective area on the optical disc, recording the most recent temporary defect list cumulatively with the previous temporary defect list in the temporary defect management area, and recording position information for indicating a position of the most recent temporary defect list in the temporary defect management area along with the temporary defect list to more effectively manage the temporary defect list.
    Type: Application
    Filed: September 26, 2003
    Publication date: July 29, 2004
    Inventors: Yong Cheol Park, Sung Dae Kim
  • Publication number: 20040136292
    Abstract: Method for managing a defective area on an optical disc of writable once type permitting, not only to read and reproduce a data written on a defective area of an optical disc, such as BD-WO regularly in data reproduction by writing the data on a spare area in place of the defective area and managing the data effectively, but also to select and search written location of defect list information, or TDFL information, which becomes effective as a disc finalize operation is executed, exactly, by writing and managing the TDFL information which is navigation information on the defective area, and the written location information and identification information which enable to select and search defect list information written in the DMA assigned to the LIA as the DDS information in a disc finalize operation, thereby permitting regular replacement writing operation, or regular replacement reproducing operation for the defective area.
    Type: Application
    Filed: November 5, 2003
    Publication date: July 15, 2004
    Inventors: Yong Cheol Park, Sung Dae Kim
  • Publication number: 20040120233
    Abstract: A method of managing overwrite and a method of recording management information on an optical disc write once can make it possible to perform a logical overwrite on the disc and thus heighten the use efficiency of the disc. The method includes replacement-recording data which is requested to be overwritten in a specified area of the disc where recording is completed in another data area physically separated from the specified area in the disc, and producing and recording management information for reproducing the physically replacement-recorded data.
    Type: Application
    Filed: December 10, 2003
    Publication date: June 24, 2004
    Inventors: Yong Cheol Park, Sung Dae Kim
  • Publication number: 20040114474
    Abstract: A method of managing overwrite on an optical disc write once, makes it possible to perform a physical overwrite on the optical disc write once and maintains the continuity of a user data area after performing the physical overwrite. The method includes replacement-recording data, which is requested to be overwritten in a specified area of the disc where recording is completed, from a rear of a user data area of the disc, and recording information in a last recordable position of the user data area, which is changed in accordance with the replacement recording operation, in a management area of the disc.
    Type: Application
    Filed: December 10, 2003
    Publication date: June 17, 2004
    Inventors: Yong Cheol Park, Sung Dae Kim
  • Publication number: 20040090888
    Abstract: A write-once optical recording medium, and a method and apparatus for recording management information on the recording medium are provided. The method includes recording, in a temporary defect management area (TDMA), management information produced while the recording medium is in use, and transferring and recording the latest management information of the TDMA in a final defect management area (DMA) of the recording medium at a DMA fill-in stage of the recording medium.
    Type: Application
    Filed: September 26, 2003
    Publication date: May 13, 2004
    Inventors: Yong Cheol Park, Sung Dae Kim
  • Publication number: 20040076049
    Abstract: A recording medium of writable once type, and a method and apparatus for managing a defective area on the recording medium are provided. The method includes detecting an existence of a defective area within a data area of the recording medium once data are written onto the data area in a data writing operation, writing data written in the defective area onto another area of the data user if the defective area is detected, and writing, onto at least one defect management area on the recording medium, defect management information associated with the defective area.
    Type: Application
    Filed: September 26, 2003
    Publication date: April 22, 2004
    Inventors: Yong Cheol Park, Sung Dae Kim
  • Patent number: 6724136
    Abstract: The present invention relates to a shadow mask comprising an effective surface including electron beam passage holes all over, an ineffective surface having a certain width surrounding the circumference of the effective surface, a skirt portion curved formed on the circumference of the ineffective surface, and concave-compressed beads formed on the ineffective surface along the skirt portion in order to improve the stiffness of the effective surface. The present invention can prevent distortions of a screen by forming the beads on the ineffective surface which is capable of improving stiffness of the shadow mask by increasing a lot value of the section modulus performing a function resisting the relative vibration occurred between the effective surface and skirt portion.
    Type: Grant
    Filed: August 16, 2000
    Date of Patent: April 20, 2004
    Assignee: LG Electronics Inc.
    Inventors: Sung Dae Kim, Sang Hu Park
  • Publication number: 20040071056
    Abstract: A method for managing a defective area of a write-once optical recording medium, and an optical recording medium using the same, are provided. The method includes steps of firstly writing replacement data in a predetermined area, the replacement data corresponding to a defective area detected during a data reproduction operation; secondly writing locator information in the predetermined area, the locator information indicating respective positions of the defective area and the corresponding replacement data; and thirdly writing a supplementary access pointer in a lead-in area, the access pointer for accessing the locator information written in the predetermined area. The predetermined area, which may be located inside or outside the data area, stores supplementary defect list information enabling data read operations when defective areas are newly detected by a host after recording data on a write-once type disc such as a BD-WO disc.
    Type: Application
    Filed: September 26, 2003
    Publication date: April 15, 2004
    Inventors: Yong Cheol Park, Sung Dae Kim