Patents by Inventor Keung-ho Hong

Keung-ho Hong 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 setting write factor in hard disk drive and hard disk drive using the same
    Patent number: 8045281
    Abstract: A method of setting write factors of each head in a hard disk and a hard disk drive using the method. The method includes writing a write signal onto a test track based on a write factor initially set on the magnetic head, writing the write signals onto the tracks adjacent to the test track, measuring the write quality of the test track, changing the write factor of the magnetic head and repeating the writing of the write signal onto the test track, and setting a write factor of the magnetic head by selecting the write factor corresponding to an optimum write quality from among the write qualities of the write factors of the test track.
    Type: Grant
    Filed: February 12, 2008
    Date of Patent: October 25, 2011
    Assignee: SAMSUNG Electronics Co., Ltd.
    Inventors: Sung-youn Cho, Keung-ho Hong
  • Method of setting AC erase frequency and AC erase method based on data frequency
    Patent number: 7920351
    Abstract: A method of setting an AC erase frequency using a data frequency of a disk area and an AC erase method. The method of setting the AC erase frequency includes obtaining a data frequency for each disk area, and setting an AC erase frequency for each disk area based on the data frequency for each disk area.
    Type: Grant
    Filed: February 11, 2008
    Date of Patent: April 5, 2011
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Sung-youn Cho, Keung-ho Hong
  • METHOD OF SETTING AC ERASE FREQUENCY AND AC ERASE METHOD BASED ON DATA FREQUENCY
    Publication number: 20080212221
    Abstract: A method of setting an AC erase frequency using a data frequency of a disk area and an AC erase method. The method of setting the AC erase frequency includes obtaining a data frequency for each disk area, and setting an AC erase frequency for each disk area based on the data frequency for each disk area.
    Type: Application
    Filed: February 11, 2008
    Publication date: September 4, 2008
    Applicant: Samsung Electronics Co., Ltd
    Inventors: Sung-youn CHO, Keung-ho Hong
  • METHOD OF SETTING WRITE FACTOR IN HARD DISK DRIVE AND HARD DISK DRIVE USING THE SAME
    Publication number: 20080198491
    Abstract: A method of setting write factors of each head in a hard disk and a hard disk drive using the method. The method includes writing a write signal onto a test track based on a write factor initially set on the magnetic head, writing the write signals onto the tracks adjacent to the test track, measuring the write quality of the test track, changing the write factor of the magnetic head and repeating the writing of the write signal onto the test track, and setting a write factor of the magnetic head by selecting the write factor corresponding to an optimum write quality from among the write qualities of the write factors of the test track.
    Type: Application
    Filed: February 12, 2008
    Publication date: August 21, 2008
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Sung-youn CHO, Keung-ho Hong