Patents by Inventor Un-jin Choi

Un-jin Choi 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: 9129637
    Abstract: Provided is a disc loading device and optical disc drive using the same. The disc loading device includes a loading roller for loading a disc in a main frame, an eject lever for discharging the disc out of the main frame, and a main slider operating the eject lever, and moving in a direction by a disc emergency ejection pin inserted from outside of the main frame.
    Type: Grant
    Filed: November 21, 2012
    Date of Patent: September 8, 2015
    Assignee: Toshiba Samsung Storage Technology Korea Corporation
    Inventors: Un-jin Choi, Joung-sug Ko, Sang-yun Baek, Cheol-woong Ahn
  • Patent number: 9082446
    Abstract: Provided are an optical disc drive and method for driving the optical disc drive. The method includes transporting a disc to a chucking position where a spindle is positioned using a loading roller, blocking power transferred from a loading motor to the loading roller, and chucking the disc on the spindle using power from the loading motor. Accordingly, damages to the disc caused by chucking may be prevented.
    Type: Grant
    Filed: November 21, 2012
    Date of Patent: July 14, 2015
    Assignee: Toshiba Samsung Storage Technology Korea Corporation
    Inventors: Un-Jin Choi, Joung-sug Ko, Sang-yun Baek, Cheol-woong Ahn
  • Patent number: 9027040
    Abstract: Provided is an optical disc drive that may discharge static electricity externally. The optical disc drive may include a step motor that is configured to move an optical pickup back and forth and a cover disposed below the optical pickup. In one aspect, the cover includes an electrostatic discharge mechanism for moving static electricity generated on the step motor through the cover.
    Type: Grant
    Filed: December 2, 2013
    Date of Patent: May 5, 2015
    Assignee: Toshiba Samsung Storage Technology Korea Corporation
    Inventors: Jung Sug Ko, Sang Yun Baek, Cheol Woong Ahn, Jae Gil Yu, Un Jin Choi
  • Patent number: 8819709
    Abstract: Provided is a disk loading apparatus which includes a frame base on which a spindle motor is mounted. The apparatus includes a disk loading structure that loads a disk on the spindle motor, a plurality of sliders operating in connection with a loading lever, and a plurality of gears transferring the motive power to the plurality of sliders. The apparatus also includes a plurality of shafts to which the gears are coupled, and a plurality of slider guide walls that guide movement of the plurality of sliders. According to various aspects, the shafts and the slider guide walls are formed integrally with the frame base.
    Type: Grant
    Filed: October 18, 2012
    Date of Patent: August 26, 2014
    Assignee: Toshiba Samsung Storage Technology Korea Corporation
    Inventors: Joung-sug Ko, Sang-yun Baek, Un-jin Choi, Cheol-woong Ahn
  • Publication number: 20140223455
    Abstract: Provided is an optical disc drive that may discharge static electricity externally. The optical disc drive may include a step motor that is configured to move an optical pickup back and forth and a cover disposed below the optical pickup. In one aspect, the cover includes an electrostatic discharge mechanism for moving static electricity generated on the step motor through the cover.
    Type: Application
    Filed: December 2, 2013
    Publication date: August 7, 2014
    Inventors: Jung Sug KO, Sang Yun BAEK, Cheol Woong AHN, Jae Gil YU, Un Jin CHOI
  • Patent number: 8739192
    Abstract: A disc loading apparatus includes a frame base, and a sub-frame disposed on the frame base and including a turntable configured to drive a disc. The disc loading apparatus also includes a loading lever disposed on the frame base and configured to load the disc on the turntable. The disc loading apparatus includes an eject lever disposed on the frame base and configured to eject the disc from the turntable to the outside of the frame base, and an eject roller disposed at a leading end of the eject lever and configured to contact an edge of the disc. An elastic skirt portion in the disc loading apparatus includes a skirt, disposed adjacent to the eject roller, and an elastic extension portion extending from the skirt.
    Type: Grant
    Filed: August 7, 2012
    Date of Patent: May 27, 2014
    Assignee: Toshiba Samsung Storage Technology Korea Corporation
    Inventors: Joung-sug Ko, Sang-yun Baek, Un-jin Choi, Cheol-woong Ahn
  • Publication number: 20140115612
    Abstract: Provided is a disc loading device and optical disc drive using the same. The disc loading device includes a loading roller for loading a disc in a main frame, an eject lever for discharging the disc out of the main frame, and a main slider operating the eject lever, and moving in a direction by a disc emergency ejection pin inserted from outside of the main frame.
    Type: Application
    Filed: November 21, 2012
    Publication date: April 24, 2014
    Applicant: Toshiba Samsung Storage Technology Korea Corporation
    Inventors: Un-jin Choi, Joung-sug Ko, Sang-yun Baek, Cheol-woong Ahn
  • Patent number: 8683499
    Abstract: A disc loading apparatus is provided. The disc loading apparatus includes a frame base, a spindle motor installed in the frame base, a disc guide wall disposed at one side of the frame base and configured to guide a loading of a disc, a disc loading structure disposed in front of another side of the frame base and disposed parallel to a direction in which the disc enters to load the disc on the spindle motor, a rotational disc centering lever disposed adjacent to the guide wall to center the disc with respect to the spindle motor, and an ejecting lever disposed at a rear side of the frame base and configured to unload the disc loaded on the spindle motor.
    Type: Grant
    Filed: May 11, 2012
    Date of Patent: March 25, 2014
    Assignee: Toshiba Samsung Storage Technology Korea Corporation
    Inventors: Joung-sug Ko, Sang-yun Baek, Un-jin Choi, Cheol-woong Ahn
  • Publication number: 20130212604
    Abstract: Provided are an optical disc drive and method for driving the optical disc drive. The method includes transporting a disc to a chucking position where a spindle is positioned using a loading roller, blocking power transferred from a loading motor to the loading roller, and chucking the disc on the spindle using power from the loading motor. Accordingly, damages to the disc caused by chucking may be prevented.
    Type: Application
    Filed: November 21, 2012
    Publication date: August 15, 2013
    Applicant: Toshiba Samsung Storage Technology Korea Corporation
    Inventors: Un-jin Choi, Joung-sug Ko, Sang-yun Baek, Cheol-woong Ahn
  • Publication number: 20130132980
    Abstract: Provided are a disc loading device and an optical disc drive using the same. When a disc is loaded into the optical disc drive, an eject lever and a main slider may be used to facilitate an open/close operation of a door of the optical disc drive. In addition, by shutting off power to a loading roller after loading a disc, the disc is prevented from being damaged by the loading roller while the disc is being chucked.
    Type: Application
    Filed: November 7, 2012
    Publication date: May 23, 2013
    Inventors: Un-jin Choi, Joung-sug Ko, Sang-yun Baek, Cheol-woong Ahn
  • Publication number: 20130104155
    Abstract: Provided is a disk loading apparatus which includes a frame base on which a spindle motor is mounted. The apparatus includes a disk loading structure that loads a disk on the spindle motor, a plurality of sliders operating in connection with a loading lever, and a plurality of gears transferring the motive power to the plurality of sliders. The apparatus also includes a plurality of shafts to which the gears are coupled, and a plurality of slider guide walls that guide movement of the plurality of sliders. According to various aspects, the shafts and the slider guide walls are formed integrally with the frame base.
    Type: Application
    Filed: October 18, 2012
    Publication date: April 25, 2013
    Inventors: Joung-sug Ko, Sang-yun Baek, Un-jin Choi, Cheol-woong Ahn
  • Publication number: 20130047170
    Abstract: A disc loading apparatus includes a frame base, and a sub-frame disposed on the frame base and including a turntable configured to drive a disc. The disc loading apparatus also includes a loading lever disposed on the frame base and configured to load the disc on the turntable. The disc loading apparatus includes an eject lever disposed on the frame base and configured to eject the disc from the turntable to the outside of the frame base, and an eject roller disposed at a leading end of the eject lever and configured to contact an edge of the disc. An elastic skirt portion in the disc loading apparatus includes a skirt, disposed adjacent to the eject roller, and an elastic extension portion extending from the skirt.
    Type: Application
    Filed: August 7, 2012
    Publication date: February 21, 2013
    Applicant: TOSHIBA SAMSUNG STORAGE TECHNOLOGY KOREA CORPORATION
    Inventors: Joung-sug KO, Sang-yun BAEK, Un-jin CHOI, Cheol-woong AHN
  • Publication number: 20130007780
    Abstract: A disc loading apparatus is provided. The disc loading apparatus includes a frame base, a spindle motor installed in the frame base, a disc guide wall disposed at one side of the frame base and configured to guide a loading of a disc, a disc loading structure disposed in front of another side of the frame base and disposed parallel to a direction in which the disc enters to load the disc on the spindle motor, a rotational disc centering lever disposed adjacent to the guide wall to center the disc with respect to the spindle motor, and an ejecting lever disposed at a rear side of the frame base and configured to unload the disc loaded on the spindle motor.
    Type: Application
    Filed: May 11, 2012
    Publication date: January 3, 2013
    Inventors: Joung-sug Ko, Sang-yun Baek, Un-jin Choi, Cheol-woong Ahn
  • Patent number: 8250592
    Abstract: Provided is an optical disk apparatus in which an interlocking slider engaged with a main slider directly drive an eject lever and a boss for performing a disk chucking operation. The optical disk apparatus includes a housing having a slot to receive a disk, a main unit having a turn table to rotate the disk, the main slider configured to move in first and second directions corresponding to insertion and ejection of the disk, the eject lever configured to eject the disk inserted into the housing through the slot, and the interlocking slider.
    Type: Grant
    Filed: April 20, 2009
    Date of Patent: August 21, 2012
    Assignee: Toshiba Samsung Storage Technology Korea Corporation
    Inventors: Cheol-woong Ahn, Un-jin Choi, Min-shik Roh, Jeong-hun Yeom, Sung-hun Lee
  • Patent number: 8132193
    Abstract: A disk ejecting unit to manually ejecting a disk and a disk device including the disk ejecting unit are provided. A disk ejecting unit for use in a disk device for recording and/or reproducing data with respect to a disk, includes a driving motor, a slider that moves toward a first position or a second position in response to a driving force of the driving motor, an eject lever to press the disk inserted into the disk device so as to eject the disk where the slider is moved toward the second position, and a gear assembly to transmit the driving force of the driving motor to the slider.
    Type: Grant
    Filed: January 16, 2009
    Date of Patent: March 6, 2012
    Assignee: Toshiba Samsung Storage Technology Korea Corporation
    Inventors: Cheol-woong Ahn, Un-jin Choi, Jeong-hun Yeom, Sung-hun Lee
  • Patent number: 7840972
    Abstract: The optical disc device includes a main unit rotating a turntable when a disc is coupled to the turntable and including an optical pick-up unit writing/reading data to/from the disc; a lever member guiding the disc to load the disc to a position at which a center of the disc is aligned with a center of the turntable and reversely guiding the disc to unload the disc, the lever member being capable of loading/unloading discs having various diameters; and a driving unit actuating the lever member. The method of controlling the optical disc device includes detecting a diameter of a disc; loading the disc to a position at which a center of the disc is aligned with the center of the turntable; coupling the disc to the turntable; and moving the lever member away from the disc to allow writing/reading data to/from the disc to be performed.
    Type: Grant
    Filed: February 6, 2007
    Date of Patent: November 23, 2010
    Assignee: Toshiba Samsung Storage Technology Korea Corporation
    Inventors: Cheol-woong Ahn, Jae-hyun Yoon, Un-jin Choi, Jeong-hun Yeom, Myong-chun Lee
  • Patent number: 7831983
    Abstract: An optical disk device with release, with the optical disk device including a main unit which having an optical pickup unit to recording/reproducing data on/from an optical disk, wherein the main unit is lifted/lowered for coupling/uncoupling the optical disk on/from a turn-table, a main slider including a rack connected by a gear to a driving source and moving linearly to lift/lower the main unit, and a releasing unit, when a pin is inserted in the optical disk device, to disengage the gear from the rack and allow the main slider to move manually. Thus, the optical disk can be manually unloaded from the optical disk device.
    Type: Grant
    Filed: February 13, 2007
    Date of Patent: November 9, 2010
    Assignee: Toshiba Samsung Storage Technology
    Inventors: Cheol-woong Ahn, Jae-hyun Yoon, Un-jin Choi, Jeong-hun Yeom, Myong-chun Lee
  • Patent number: 7698714
    Abstract: A slim optical disc drive including a deck having a protrusion on which a spindle motor that rotates an optical disc and an optical pickup sliding along a radial direction of the optical disc drive are mounted, a lower case installed so that the deck slides into and out of the lower case and having a penetration corresponding to the protrusion, and a cover that covers the penetration.
    Type: Grant
    Filed: August 20, 2003
    Date of Patent: April 13, 2010
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Un-jin Choi
  • Publication number: 20090271810
    Abstract: Provided is an optical disk apparatus in which an interlocking slider engaged with a main slider directly drive an eject lever and a boss for performing a disk chucking operation. The optical disk apparatus includes a housing having a slot to receive a disk, a main unit having a turn table to rotate the disk, the main slider configured to move in first and second directions corresponding to insertion and ejection of the disk, the eject lever configured to eject the disk inserted into the housing through the slot, and the interlocking slider.
    Type: Application
    Filed: April 20, 2009
    Publication date: October 29, 2009
    Inventors: Cheol-woong Ahn, Un-jin Choi, Min-shik Roh, Jeong-hun Yeom, Sung-hun Lee
  • Publication number: 20090199223
    Abstract: A disk ejecting unit to manually ejecting a disk and a disk device including the disk ejecting unit are provided. A disk ejecting unit for use in a disk device for recording and/or reproducing data with respect to a disk, includes a driving motor, a slider that moves toward a first position or a second position in response to a driving force of the driving motor, an eject lever to press the disk inserted into the disk device so as to eject the disk where the slider is moved toward the second position, and a gear assembly to transmit the driving force of the driving motor to the slider.
    Type: Application
    Filed: January 16, 2009
    Publication date: August 6, 2009
    Inventors: Cheol-woong Ahn, Un-jin Choi, Jeong-hun Yeom, Sung-hun Lee