Patents by Inventor Joosun Hahn

Joosun Hahn 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: 8296505
    Abstract: Disclosed are a system and method for controlling a flash memory using a descriptor array, which may maximize a performance of a flash memory based-storage system. The system includes a descriptor array receipt unit for receiving, from a processor, a descriptor array including, at least one descriptor corresponding to at least one operation; and a flash memory control unit for verifying the descriptor included in the descriptor array and executing a flash memory control command included in the verified descriptor, wherein the flash memory control unit executes the flash memory control command independent from the operation of the processor.
    Type: Grant
    Filed: January 24, 2008
    Date of Patent: October 23, 2012
    Inventors: Sang Lyul Min, Yoonjae Seong, Sung-Kwan Kim, Joosun Hahn
  • Patent number: 8255663
    Abstract: A system for processing a read request for maximizing host read performance in a flash memory-based storage device is provided. The system for processing the read request solves a bottleneck phenomenon caused by a processor by adding an independent automatic read request processor, different from a conventional system in which a processor of a storage device processes the read request. Also, when processing the read request, a storage device using a write buffer may control a process of merging data of the write buffer and a flash memory and transmitting the data to a host based on a descriptor array, thereby minimizing processor overhead.
    Type: Grant
    Filed: January 24, 2008
    Date of Patent: August 28, 2012
    Inventors: Yookun Cho, Sang Lyul Min, Sung-Kwan Kim, Joosun Hahn, Jin Hyuk Yoon
  • Publication number: 20100115190
    Abstract: A system for processing a read request for maximizing host read performance in a flash memory-based storage device is provided. The system for processing the read request solves a bottleneck phenomenon caused by a processor by adding an independent automatic read request processor, different from a conventional system in which a processor of a storage device processes the read request. Also, when processing the read request, a storage device using a write buffer may control a process of merging data of the write buffer and a flash memory and transmitting the data to a host based on a descriptor array, thereby minimizing processor overhead.
    Type: Application
    Filed: January 24, 2008
    Publication date: May 6, 2010
    Applicants: Zeen Information Technologies, Inc., Seoul National University Industry Foundation
    Inventors: Yookun Cho, Sang Lyul Min, Jin Hyuk Yoon, Sung-Kwan Kim, Joosun Hahn