Patents by Inventor Jae-Joon Jung

Jae-Joon Jung 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).

  • Method of controlling tilt servo in DVD system
    Publication number: 20030198160
    Abstract: This tilt servo control method includes the step of reading a first jitter value “A”. Thereafter, a second jitter value “B” is read after an angle of an objective lens is moved by a predetermined step. If “A” is equal to or smaller than “B”, the angle of objective lens is optimized by performing the tilt servo while the angle of objective lens is moved. If “A” is larger than “B”, a third jitter value “C” is read after the angle of objective lens is moved by predetermined step. If “A” is equal to or smaller than “C”, the angle of objective lens is optimized by performing the tilt servo while the angle of objective lens is moved. If “A” is larger than “C”, the angle of objective lens is optimized while the angle of objective lens is moved by half of the predetermined step.
    Type: Application
    Filed: September 20, 2002
    Publication date: October 23, 2003
    Applicant: DVS Korea Co., Ltd.
    Inventors: Deok-Hwan Park, Jae-Joon Jung