Patents by Inventor Youngbin Seo

Youngbin Seo 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).

  • Flash memory device having secure file deletion function and method for securely deleting flash file
    Patent number: 8117377
    Abstract: Disclosed is a flash memory device having a secure flash file deletion function and a method for securely deleting a flash file. Data and object headers as actual contents of the flash file are separately stored in data blocks and header blocks. At this time, the data is encrypted and stored, and a decryption key is included in an object header and stored in a header block. When the flash file is deleted, the object header is deleted by searching the header block where the object header including the decryption key is stored. In order to search the header block, a binary tree structure is used in which a terminal node indicates an LSB of a file ID. Disclosed may be applied to an embedded system where a flash memory is used as a storage medium. In particular, disclosed is suitable for a NAND flash memory device.
    Type: Grant
    Filed: October 22, 2008
    Date of Patent: February 14, 2012
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Seungmin Park, Jaemyoung Kim, Yungjoon Jung, Donghyouk Lim, Youngbin Seo, Yookun Cho, Sangho Yi, Jaeheung Lee, Seokhyun Kim, Jinha Oh
  • FLASH MEMORY DEVICE HAVING SECURE FILE DELETION FUNCTION AND METHOD FOR SECURELY DELETING FLASH FILE
    Publication number: 20090172265
    Abstract: Disclosed is a flash memory device having a secure flash file deletion function and a method for securely deleting a flash file. Data and object headers as actual contents of the flash file are separately stored in data blocks and header blocks. At this time, the data is encrypted and stored, and a decryption key is included in an object header and stored in a header block. When the flash file is deleted, the object header is deleted by searching the header block where the object header including the decryption key is stored. In order to search the header block, a binary tree structure is used in which a terminal node indicates an LSB of a file ID. Disclosed may be applied to an embedded system where a flash memory is used as a storage medium. In particular, disclosed is suitable for a NAND flash memory device.
    Type: Application
    Filed: October 22, 2008
    Publication date: July 2, 2009
    Applicant: Electronics Telecommunication Research Institute
    Inventors: Seungmin Park, Jaemyoung Kim, Yungjoon Jung, Donghyouk Lim, Youngbin Seo, Yookun Cho, Sangho Yi, Jaeheung Lee, Seokhyun Kim, Jinha Oh
  • DRM METHOD AND DRM SYSTEM USING TRUSTED PLATFORM MODULE
    Publication number: 20090158028
    Abstract: The present invention relates to a terminal apparatus including a trusted platform module (TPM) and a DRM method using the same. The terminal apparatus receives information on a validity period from a server, uses the TPM generates a public key including the information on the validity period, transmits the public key to the server, receives encoded digital contents from the server, and uses the TPM to decode the received digital contents.
    Type: Application
    Filed: July 14, 2008
    Publication date: June 18, 2009
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Yungjoon JUNG, Donghyouk Lim, Youngbin Seo, Yonggwan Lim, Jaemyoung Kim, Seungmin Park