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).

  • Patent number: 7532548
    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: Grant
    Filed: December 10, 2003
    Date of Patent: May 12, 2009
    Assignee: LG Electronics Inc.
    Inventors: Yong Cheol Park, Sung Dae Kim
  • Patent number: 7532551
    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: Grant
    Filed: September 26, 2003
    Date of Patent: May 12, 2009
    Assignee: LG Electronics Inc.
    Inventors: Yong Cheol Park, Sung Dae Kim
  • Publication number: 20090116351
    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 a spare area of the data area if the defective area is detected; writing temporary management information pertaining to the defective area, onto a temporary management area on the recording medium; and writing access information for accessing the temporary management information, onto a reserved area on the recording medium.
    Type: Application
    Filed: December 30, 2008
    Publication date: May 7, 2009
    Inventors: Yong Cheol PARK, Sung Dae Kim
  • Patent number: 7499383
    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: Grant
    Filed: February 20, 2004
    Date of Patent: March 3, 2009
    Assignee: LG Electronics Inc.
    Inventors: Yong Cheol Park, Sung Dae Kim
  • Patent number: 7489604
    Abstract: A recording medium and a method and apparatus for managing a defective area on the recording medium are provided. The method according to one embodiment includes detecting an existence of a defective area within the data area of the recording medium; writing data written in the defective area onto a replacement area of the at least one spare area if the defective area is detected; and writing defect management information associated with the defective area onto one of a plurality of defect management areas on the recording medium, wherein the defect management areas on the recording medium are allocated on the lead in area and within the at least one spare area of the recording medium.
    Type: Grant
    Filed: June 30, 2006
    Date of Patent: February 10, 2009
    Assignee: LG Electronics Inc.
    Inventors: Yong Cheol Park, Sung Dae Kim
  • Publication number: 20090028015
    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 30, 2008
    Publication date: January 29, 2009
    Inventors: Yong Cheol PARK, Sung Dae Kim
  • Patent number: 7483349
    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 a spare area of the data area if the defective area is detected; writing temporary management information pertaining to the defective area, onto a temporary management area on the recording medium; and writing access information for accessing the temporary management information, onto a reserved area on the recording medium.
    Type: Grant
    Filed: September 26, 2003
    Date of Patent: January 27, 2009
    Assignee: LG Electronics Inc.
    Inventors: Yong Cheol Park, Sung Dae Kim
  • Patent number: 7477581
    Abstract: A method and an optical recoding medium for defect management are discussed. According to an embodiment, the method of defect management for a write-once optical recording medium having a plurality of temporary defect management areas, includes a step of recording disc definition structure information in one of the plurality of temporary defect management areas, wherein the plurality of temporary defect management areas include a first temporary defect management area for recording the disc definition structure information during a recording session and a second temporary defect management area for recording the disc definition structure information upon termination of the recording session.
    Type: Grant
    Filed: February 24, 2004
    Date of Patent: January 13, 2009
    Assignee: LG Electronics Inc.
    Inventors: Yong Cheol Park, Sung Dae Kim
  • Publication number: 20090010678
    Abstract: An image forming apparatus, includes: a main body frame; a process cartridge which comprises a driven gear unit which is driven to form a visible image on an image carrying body; and a bracket device which comprises a bracket main body which is coupled to the main body frame, a driving gear unit which is supported to the bracket main body, and which is to be engaged with the driven gear unit, and a guide which guides the process cartridge into a mounting position in the main body frame.
    Type: Application
    Filed: June 19, 2008
    Publication date: January 8, 2009
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Sung-dae KIM, Jung-Jae Lee, Hak-kyum Kim
  • Publication number: 20080259753
    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: February 6, 2008
    Publication date: October 23, 2008
    Inventors: Yong Cheol Park, Sung Dae Kim
  • Patent number: 7428396
    Abstract: A power restricting device for a developing device of an image forming apparatus and an image forming apparatus with the same are disclosed. The power restricting device for a developing device of an image forming apparatus includes a driving section with at least one rotational member which is rotated by a power supplied from an external source. The rotational member is movable between a coupled position where it couples with a developing roller and an uncoupled position where it is not coupled with a developing roller. A rotational shaft includes at least one cam which makes the rotational member move between the coupled position and an uncoupled position. A shaft driving section rotates the rotational shaft in one direction. The cam is provided with a cam surface with a first section.
    Type: Grant
    Filed: June 30, 2006
    Date of Patent: September 23, 2008
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Sung-dae Kim
  • Publication number: 20080189571
    Abstract: A method and apparatus for managing a defective area of a recording medium, are discussed. According to an embodiment, the method includes identifying a finalization state by searching identification information indicating whether or not the recording medium is finalized; searching a location of defect list information recorded in a management area when identification information indicating the recording medium is finalized; and searching a location of latest temporary defect list information recorded in a temporary management area when identification information indicating the recording medium is not finalized.
    Type: Application
    Filed: March 28, 2008
    Publication date: August 7, 2008
    Inventors: Yong Cheol Park, Sung Dae Kim
  • Patent number: 7376373
    Abstract: An electrophotographic image forming apparatus is provided that includes a plurality of developing units, a cam shaft, and a plurality of cams disposed on the cam shaft corresponding to the respective developing units. A power transmitting device disposed between the developing units and the cams selectively transmits rotational force from a driving source to the plurality of developing units.
    Type: Grant
    Filed: January 25, 2006
    Date of Patent: May 20, 2008
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Sung-dae Kim, Cheol-young Han, Hae-seog Jo, Young-min Yoon
  • Patent number: 7372788
    Abstract: A method for managing a defective area of a write-once optical recording medium, and an optical recording medium using the same, is provided. In an optical disc device for recording/reproducing data using an optical disc such as a BD-WO type disc, the method permits the normal reading and reproducing of recording data written on a defective area of the disc, through a replacement write operation for the recording data of the defective area. When a defect is detected within a predetermined recording sector of the optical disc during the recording process, the recording data is written on a spare area corresponding to the defective area and the thus written data is managed. To accomplish this during data recording, the method selectively searches a write location of temporary defect list (TDFL) information, which is effective before disc finalization, or defect list (DFL) information, which becomes effective upon execution of a disc finalization operation.
    Type: Grant
    Filed: November 5, 2003
    Date of Patent: May 13, 2008
    Assignee: LG Electronics Inc.
    Inventors: Yong Cheol Park, Sung Dae Kim
  • Patent number: 7355934
    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: Grant
    Filed: September 26, 2003
    Date of Patent: April 8, 2008
    Assignee: LG Electronics Inc.
    Inventors: Yong Cheol Park, Sung Dae Kim
  • Publication number: 20080080882
    Abstract: A multi-pass type color image forming apparatus. The multi-pass type color image forming apparatus includes an indicating member which is provided at a camshaft and has a plurality of indicating portions, a sensing part which detects the plurality of indicating portions, and a control unit which receives a signal from the sensing part when the indicating member passes by the sensing part by the rotation of the camshaft, and determines a home position by a rotational position of the camshaft when a signal pattern from a sequence of signals from the sensing part corresponds with a preset reference pattern. Accordingly, the home position of the camshaft can be determined in a short amount of time regardless of the slip between the cams and the push caps, so that the warm up time can be shortened and the generation time of noise caused by the contact between the cams and the push caps can be minimized.
    Type: Application
    Filed: September 19, 2007
    Publication date: April 3, 2008
    Applicant: Samsung Electronics Co., Ltd
    Inventors: Su Kyoung CHAE, Sung Dae Kim, Young Min Yoon, Gun Ho Kim
  • Publication number: 20080050131
    Abstract: A toner supplying device which is capable of individually supplying toners of different colors. The toner supplying device can include a driving source; a plurality of toner receptacles in which different color toners are contained and respective toner discharging members are provided in order to discharge toners while being driven by power transmitted from the driving source; and a plurality of spring clutches to selectively transmit power from the driving source to the toner discharging members. The toner supplying device according to the present general inventive concept can be advantageously employed in toner-refill type color image forming apparatuses in view of the miniaturization of the apparatus and reduction in the manufacturing costs.
    Type: Application
    Filed: February 20, 2007
    Publication date: February 28, 2008
    Applicant: SAMSUNG Electronics Co., Ltd.
    Inventors: Sung-dae Kim, Young-min Yoon
  • Patent number: 7311438
    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: Grant
    Filed: December 30, 2004
    Date of Patent: December 25, 2007
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Myoung-Chan Kim, Gwoang-Joe Seorl, Sung-Dae Kim
  • Patent number: 7289404
    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: Grant
    Filed: September 26, 2003
    Date of Patent: October 30, 2007
    Assignee: LG Electronics Inc.
    Inventors: Yong Cheol Park, Sung Dae Kim
  • Publication number: 20070228741
    Abstract: Disclosed herein is a wireless device including at least one locker structure. The locker structure includes a battery pack side coupling member (a first coupling member) protruding from the outer surface of a battery pack, the first coupling member having a hook formed at one side thereof and a structure tapered downward toward the battery pack (an incline structure) at the other side thereof, and a wireless device body side coupling member (a second coupling member) mounted in a body of the wireless device at the position corresponding to the first coupling member, the second coupling member including a coupling part which can be coupled with the hook, a member body having a rear protrusion formed at the position corresponding to the incline, and an elastic member mounted at the rear of the member body.
    Type: Application
    Filed: October 10, 2006
    Publication date: October 4, 2007
    Applicant: LG CHEM, LTD.
    Inventors: Jongho PARK, Byoung-Nam KIM, Seunghyun BANG, Sung-Dae KIM