Patents by Inventor Yong-jin Ahn

Yong-jin Ahn 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 and apparatus for recording data on optical recording medium
    Publication number: 20030095488
    Abstract: A method of and apparatus for recording data on an optical recording medium form a mark or a space by using a recording waveform having an erase pattern containing a multi-pulse. The method and the apparatus prevent distortion of the mark or the space and improve a mark shape such that a recording/reproducing characteristic of the optical recording medium is improved.
    Type: Application
    Filed: September 27, 2002
    Publication date: May 22, 2003
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Yong-jin Ahn, In-sik Park, Kyung-geun Lee, Chang-jin Yang, Tatsuhiro Otsuka, Du-seop Yoon, Seong-sue Kim
  • Magneto-optical recording medium for short wavelength
    Patent number: 6423430
    Abstract: A magneto-optical recording medium for short wavelength in which a dielectric layer, a reproducing/recording bilayer made of (Ndx(TbFeCoCr)100−x/(TbFeCoCr) or (NdaGdb(TbFeCoCr)100−(a+b)/(TbFeCoCr), a protective layer and a reflective layer are, in sequence, formed on a substrate, which is superior in magnetic and magneto-optical properties at a short wavelength range in addition to being of high data storage density, high data transfer rates and long data archival capability.
    Type: Grant
    Filed: July 17, 1995
    Date of Patent: July 23, 2002
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Hyeon-chang Hong, Yong-jin Ahn