Patents by Inventor Myoung J. Go

Myoung J. Go 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: 6714496
    Abstract: A method for calibrating a tilt in a disc player includes a disc insertion judgment step, a focus error output time judgment step, a subtraction step, a disc recording surface judgment step, and a tilt calibration step. In the focus error output time judgment step, an optical pickup unit is made to ascend and then descend for a predetermined time, to then judge a first focus error output time at which a focus error is output during ascending and a second focus error output time at which a focus error is output during descending. A focus error output difference time is obtained by subtracting the FET1 from the FET2. In the tilt calibration step, if the FET is not same as a reference focus error output difference time (FETrf), the turntable is made to rotate, to calibrate a tilt between the optical pickup unit and the disc.
    Type: Grant
    Filed: October 1, 2001
    Date of Patent: March 30, 2004
    Assignee: Digital Multimedia Technology Co., Ltd.
    Inventors: Hong S. Park, Jong W. Kim, Myoung J. Go
  • Publication number: 20020093896
    Abstract: A method for calibrating a tilt in a disc player includes a disc insertion judgment step, a focus error output time judgment step, a subtraction step, a disc recording surface judgment step, and a tilt calibration step. In the focus error output time judgment step, an optical pickup unit is made to ascend and then descend for a predetermined time, to then judge a first focus error output time at which a focus error is output during ascending and a second focus error output time at which a focus error is output during descending. A focus error output difference time is obtained by subtracting the FET1 from the FET2. In the tilt calibration step, if the FET is not same as a reference focus error output difference time (FETrf), the turntable is made to rotate, to calibrate a tilt between the optical pickup unit and the disc.
    Type: Application
    Filed: October 1, 2001
    Publication date: July 18, 2002
    Inventors: Hong S. Park, Jong W. Kim, Myoung J. Go