Patents by Inventor Moonkyo Chung

Moonkyo Chung 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 recording medium having first and second super-resolution layers
    Patent number: 6961300
    Abstract: The present invention provides an optical recording medium in which the spot size of incident laser beam, focused on the medium by a far-field optic system characterized by ? and NA, is further reduced and maintained below the diffraction-limited size by means of material characteristics of the medium while reproducing from and recording on the information layer of the recording medium, thus making it possible to record and reproduce a high density of information exceeding the resolution limit of the optic system. A high density optical recording medium according to the present invention adopts a combination of two different super-resolution layers of mutually complementary optical characteristics with increasing light power.
    Type: Grant
    Filed: June 28, 2002
    Date of Patent: November 1, 2005
    Assignee: Korea Institute of Science and Technology
    Inventors: Byung-ki Cheong, Soon-Gwang Kim, Won-Mok Kim, Moonkyo Chung, Taek-Sung Lee, Sung-Jin Park, Sung-Hun Lee, Sung-Hun Cho
  • High density optical recording medium
    Publication number: 20030002428
    Abstract: The present invention provides an optical recording medium in which the spot size of incident laser beam, focused on the medium by a far-field optic system characterized by &lgr; and NA, is further reduced and maintained below the diffraction-limited size by means of material characteristics of the medium while reproducing from and recording on the information layer of the recording medium, thus making it possible to record and reproduce a high density of information exceeding the resolution limit of the optic system.
    Type: Application
    Filed: June 28, 2002
    Publication date: January 2, 2003
    Applicant: Korea Institute of Science and Technology
    Inventors: Byung-ki Cheong, Soon-Gwang Kim, Won-Mok Kim, Moonkyo Chung, Taek-Sung Lee, Sung-Jin Park, Sung-Hun Lee, Sung-Hun Cho