Patents by Inventor Chung-Il Chun

Chung-Il Chun 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).

  • Apparatus and method for controlling head loading in disk drive
    Patent number: 7099100
    Abstract: An apparatus and method for controlling head loading in a disk drive including a displacement measuring unit measuring a vertical displacement of a disk, a rotational angle detecting unit detecting a rotational angle of a spindle motor, and a controller controlling the movement of an actuator to load a head on the disk while a vertical displacement of a portion of the disk on which the head is loaded is decreasing so that the disk separates farther from a position on which the head is parked. Therefore, the possibility of collision between the head and the disk during head loading is reduced, thereby preventing damage to the head and disk and improving the reliability of the disk drive.
    Type: Grant
    Filed: July 12, 2004
    Date of Patent: August 29, 2006
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Yong-kyu Byun, Chung-Il Chun
  • Apparatus and method for controlling head loading in disk drive
    Publication number: 20050068661
    Abstract: An apparatus and method for controlling head loading in a disk drive including a displacement measuring unit measuring a vertical displacement of a disk, a rotational angle detecting unit detecting a rotational angle of a spindle motor, and a controller controlling the movement of an actuator to load a head on the disk while a vertical displacement of a portion of the disk on which the head is loaded is decreasing so that the disk separates farther from a position on which the head is parked. Therefore, the possibility of collision between the head and the disk during head loading is reduced, thereby preventing damage to the head and disk and improving the reliability of the disk drive.
    Type: Application
    Filed: July 12, 2004
    Publication date: March 31, 2005
    Inventors: Yong-kyu Byun, Chung-il Chun