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: 7701823
    Abstract: A recording medium, and a method and apparatus for recording management information on the recording medium are discussed. According to an embodiment, the invention provides a method of recording management information on a recording medium, the recording medium including a temporary defect management area (TDMA) and a final defect management area (DMA), the DMA including a defect list area, the method comprising: recording, in the TDMA, defect list information produced while the recording medium is in use, and recording, in the defect list area of the DMA, the latest defect list information included in the TDMA when the recording medium is to be finalized, wherein the defect list area of the DMA includes a plurality of recording units, and the latest defect list information is recorded on at least one of the recording units of the defect list area.
    Type: Grant
    Filed: May 9, 2007
    Date of Patent: April 20, 2010
    Assignee: LG Electronics Inc.
    Inventors: Yong Cheol Park, Sung Dae Kim
  • Publication number: 20100091622
    Abstract: A method and device for managing a recording medium including a non data area having a final defect management area and a data area having a user data area and a spare area. The method includes: (a) recording a defect list onto one or more recording-units of a temporary defect management area allocated to one of the non data area and the spare area, and recording position information of the defect list onto the temporary defect management area, the position information containing one or more defect list pointers which indicate position of the one or more recording-units containing the defect list; and (b) if a recoding-unit is defective, re-recording defect list data onto another recording-unit, and recording updated position information containing a defect list pointer indicating a position of the another recording-unit instead of a defect list pointer indicating a position of the defective recording-unit.
    Type: Application
    Filed: December 16, 2009
    Publication date: April 15, 2010
    Inventors: Yong Cheol PARK, Sung Dae Kim
  • Patent number: 7697862
    Abstract: A high voltage switch device includes a plurality of switches installed between a high voltage power unit and a plurality of developing units. A plurality of cams are disposed on a cam shaft corresponding to the respective switches. The switches are selectively turned “on” and “off” as the cam shaft rotates.
    Type: Grant
    Filed: January 30, 2006
    Date of Patent: April 13, 2010
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Sung-dae Kim, Cheol-young Han, Young-min Yoon
  • Publication number: 20100085852
    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 29, 2009
    Publication date: April 8, 2010
    Inventors: Yong Cheol PARK, Sung Dae KIM
  • Patent number: 7675828
    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: Grant
    Filed: February 24, 2004
    Date of Patent: March 9, 2010
    Assignee: LG Electronics Inc.
    Inventors: Yong Cheol Park, Sung Dae Kim
  • Patent number: 7672204
    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: Grant
    Filed: September 26, 2003
    Date of Patent: March 2, 2010
    Assignee: LG Electronics Inc.
    Inventors: Yong Cheol Park, Sung Dae Kim
  • Publication number: 20100046335
    Abstract: A device and method of reproducing and/or recording data onto a write once recording medium, the recording medium having a data area and a management area, the data area having a spare area. The recording method include: performing a replacement-recording by recording data requested to be recorded in a specified area onto a replacement area in the data area when the specified area is defective or contains data recorded thereon; and recording onto the management area a pair of consecutive entries for managing the replacement-recording when a size of the specified area corresponds to a plurality of consecutive recording-units. One of the pair of consecutive entries includes start address information of the specified area and start address information of the replacement area and another of the pair of consecutive entries includes end address information of the specified area and end address information of the replacement area.
    Type: Application
    Filed: October 28, 2009
    Publication date: February 25, 2010
    Inventors: Yong Cheol Park, Sung Dae Kim
  • Patent number: 7668054
    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: Grant
    Filed: December 10, 2003
    Date of Patent: February 23, 2010
    Assignee: LG Electronics Inc.
    Inventors: Yong Cheol Park, Sung Dae Kim
  • Patent number: 7643390
    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: Grant
    Filed: September 26, 2003
    Date of Patent: January 5, 2010
    Assignee: LG Electronics Inc.
    Inventors: Yong Cheol Park, Sung Dae Kim
  • Patent number: 7630742
    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: Grant
    Filed: October 10, 2006
    Date of Patent: December 8, 2009
    Assignee: LG Chem, Ltd.
    Inventors: Jongho Park, Byoung-Nam Kim, Seunghyun Bang, Sung-Dae Kim
  • Patent number: 7630283
    Abstract: A defective area on a write-once type optical recording medium, e.g., such as a BD-WO, is effectively managed with a method that can efficiently replace and/or record data that has been recorded in a defective area of the disc, e.g., in a spare area of a data area of the BD-WO. During the reproduction of data, the data that has been recorded and replaced can be read out and reproduced from an area other than a spare area. New TDFL information may be recorded cumulatively with the previous TDFL information as defect management information for the defective area, or repeatedly recorded at least twice in a certain recording region, e.g., a recording region chosen from a lead-in area, the data area, and a lead-out area, so that the temporary defect list information can be accurately and reliably secured.
    Type: Grant
    Filed: September 26, 2003
    Date of Patent: December 8, 2009
    Assignee: LG Electronics Inc.
    Inventors: Yong Cheol Park, Sung Dae Kim
  • Patent number: 7624299
    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. According to an embodiment, the method includes recording temporary management information in a temporary defect management area of the recording medium, the temporary management information including disc usage management information indicating a recording or non-recording status of the user area of the each recording layer; and transferring the disc usage management information from the at least one temporary defect management area to the at least one final defect management area of the recording medium, wherein in the recording step, the disc usage management information for each of the recording layers is separately recorded in the temporary defect management area.
    Type: Grant
    Filed: January 12, 2007
    Date of Patent: November 24, 2009
    Assignee: LG Electronics Inc.
    Inventors: Yong Cheol Park, Sung Dae Kim
  • Patent number: 7613085
    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: Grant
    Filed: March 28, 2008
    Date of Patent: November 3, 2009
    Assignee: LG Electronics Inc.
    Inventors: Yong Cheol Park, Sung Dae Kim
  • Patent number: 7610000
    Abstract: A developing device driver according to the present invention includes a developing roller gear connected to each developing roller to develop an electrostatic latent image formed on a photoconductive medium with developer having predetermined color, a driving source for generating power for rotating the developing roller gear, a driving gear driven by the power transmitted from the driving source, and a power switching gear provided with power from the driving gear and rotated along a circumference of the driving gear, and a rotation unit. The rotation unit rotates the power switching gear to place the power switching gear into contact with and separate the gear from the developing roller gears to selectively drive one developing roller.
    Type: Grant
    Filed: July 7, 2006
    Date of Patent: October 27, 2009
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Sung-dae Kim, Cheol-young Han
  • Patent number: 7606517
    Abstract: Provided is an image forming apparatus for printing a desired image.
    Type: Grant
    Filed: January 31, 2006
    Date of Patent: October 20, 2009
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Sung-dae Kim, Cheol-young Han, Young-min Yoon
  • Publication number: 20090257328
    Abstract: A method and apparatus for recording or reproducing data are discussed. According to an embodiment, the invention is directed to a method for recording data onto a recording medium having a recording layer, the recording layer including an inner area, a data area and an outer area, the data area having a user data area and a spare area, the user data area consisting of a plurality of clusters, the method comprising steps of: (a) recording a first data block having a temporary defect list for managing a defective area of the data area onto a temporary defect management area allocated in the inner area or the spare area; and (b) recording a second data block having a space bitmap onto the temporary defect management area.
    Type: Application
    Filed: June 23, 2009
    Publication date: October 15, 2009
    Inventors: Yong Cheol PARK, Sung Dae Kim
  • Patent number: 7590372
    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: Grant
    Filed: September 19, 2007
    Date of Patent: September 15, 2009
    Assignee: Samsung Electronics Co., Ltd
    Inventors: Su Kyoung Chae, Sung Dae Kim, Young Min Yoon, Gun Ho Kim
  • Publication number: 20090175141
    Abstract: A recording medium, and a method and apparatus for recording and/or reproducing management information on/from the recording medium are discussed. According to an embodiment, the invention provides an apparatus includes components so that the apparatus finalizes the recording medium when receiving request of an external host or when a temporary defect management area located in at least one of a non-data area and a non-user data area becomes full, where a controller is configured to control the components so that the apparatus records the latest defect list information written in the temporary defect management area onto a final defect management area when finalizing the recording medium.
    Type: Application
    Filed: March 6, 2009
    Publication date: July 9, 2009
    Inventors: Yong Cheol Park, Sung Dae Kim
  • Patent number: 7554891
    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: Grant
    Filed: December 23, 2003
    Date of Patent: June 30, 2009
    Assignee: LG Electronics, Inc.
    Inventors: Yong Cheol Park, Sung Dae Kim
  • Publication number: 20090154316
    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 13, 2009
    Publication date: June 18, 2009
    Inventors: Yong Cheol PARK, Sung Dae Kim