Patents by Inventor Ick-Joo Cha

Ick-Joo Cha 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).

  • Optical disk player
    Patent number: 6266311
    Abstract: An optical disk player simplifies the mechanism of an emergency ejecting device for manually ejecting a tray, and includes a pickup unit which ejects the tray by virtue of the driving power of a pickup motor in a read-in area, without separately using an ejecting driving motor. The optical disk player is provided with a tray ejecting device for ejecting the tray on which a disk is placed by which the feeding power of the pickup motor for driving the pickup unit is converted to the ejecting power when the pickup unit is in the read-in area, and an emergency tray ejecting device for manually ejecting the tray.
    Type: Grant
    Filed: October 1, 1998
    Date of Patent: July 24, 2001
    Assignee: LG Electronics, Inc.
    Inventors: Geun-Hyuk Song, Kye-Yeon Ryu, Ick-Joo Cha