Patents by Inventor Ji-young Moon

Ji-young Moon 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).

  • Publication number: 20090037642
    Abstract: A method of managing and restoring an identifier of a storage device and an apparatus therefor are provided. The method includes the operations of generating a storage device identifier; recording the storage device identifier in a non-volatile memory of a host; generating an identifier file including the storage device identifier and a host identifier; and recording the identifier file in the storage device. By doing so, the method and apparatus can efficiently and securely manage the storage device.
    Type: Application
    Filed: May 14, 2008
    Publication date: February 5, 2009
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Chang-sup Ahn, Yong-Kuk You, So-Young Lee, Bong-Seon Kim, Ji-Young Moon
  • Publication number: 20090038007
    Abstract: A method and apparatus for managing a client revocation list are provided. The method includes receiving a first client revocation list from a server; and selectively discontinuing an operation of a client, based on the first client revocation list. By doing so, the method and the apparatus can securely control contents.
    Type: Application
    Filed: May 13, 2008
    Publication date: February 5, 2009
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Chang-sup AHN, Yong-kuk YOU, So-young LEE, Bong-seon KIM, Ji-young MOON
  • Publication number: 20090037748
    Abstract: Provided is a method of preventing digital content from being used despite the presence of copy control information. In the method, a security apparatus capable of restricting use of contents generates a nonce with respect to a storage device and stores the nonce in the storage device and a memory separated from the storage device when content is stored in the storage device; updates the nonces stored in the memory and storage device when movement of the content occurs; and permits use of the content only when the nonce of the storage device, which is stored in the memory, is equal to the nonce stored in the storage device if the content is requested for use, thereby preventing a disk cloning attack.
    Type: Application
    Filed: May 30, 2008
    Publication date: February 5, 2009
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Bong-seon KIM, Yong-kuk You, Chang-sup Ahn, So-young Lee, Ji-young Moon
  • Publication number: 20090016537
    Abstract: Provided are a method and apparatus for mutually authenticating devices in a group and reproducing content using public broadcast encryption. The method of authenticating a first device and a second device includes acquiring specific information of the second device from the second device, transmitting data, containing the acquired specific information of the second device and specific information of the first device, by encrypting the data using a broadcast public key of a group to which the second device belongs, and determining whether authentication of the first device succeeds by decrypting the encrypted data by using a private key of the second device. If authentication succeeds, receiving the specific information of the first device, which is encrypted by using a temporary common key by using the decrypted data, and authenticating the second device by decrypting the encrypted specific information of the first device by using the temporary common key.
    Type: Application
    Filed: March 14, 2008
    Publication date: January 15, 2009
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Hak-soo JU, Myung-sun KIM, Ji-young MOON
  • Publication number: 20090012973
    Abstract: Provided are a method and apparatus for generating separate rule data using a database management system (DBMS) based language in order to efficiently manage usage rules of content. The method of providing usage rule data of content included in a mobile storage medium connected to a content reproduction device, the method includes: generating first rule data that is a set of rules used to manage the usage rule data based on a data structure of a database management system (DBMS); and generating second rule data that is a set of rules used to access the usage rule data using the first rule data.
    Type: Application
    Filed: March 17, 2008
    Publication date: January 8, 2009
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Ji-young Moon, Myung-sun Kim, Hak-soo Ju
  • Publication number: 20090013172
    Abstract: A reproduction method capable of immediately revoking a leaked device key by dividing the device key into a first partial key and a second partial key is provided. The reproduction method includes the operations of receiving encrypted content to be reproduced, requesting a token for decrypting the received content from an external device containing a first partial key of a device via a network, receiving the requested token from the external device, and decrypting the received token by using a second partial key contained in the device, thereby preventing content encrypted and distributed before revocation of an illegally copied device from being reproduced, and minimizing damage due to key leakage.
    Type: Application
    Filed: March 17, 2008
    Publication date: January 8, 2009
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Hak-soo JU, Myung-sun Kim, Ji-young Moon
  • Publication number: 20080256527
    Abstract: Provided are a method of generating a firmware update file which restrictively allows a firmware update for a corresponding hardware model, and a method and apparatus for updating firmware using the firmware update file. By generating a data body including program codes of firmware to be updated, generating a data header including model codes of a hardware device to which the data body is applied, and generating the firmware update file by combining the data body and the data header, the firmware update may be restricted for a corresponding model of a hardware device by using the firmware update file so that firmware of other models of hardware devices may not be updated, an integrity check may be performed using a digital signature when the firmware is updated.
    Type: Application
    Filed: November 30, 2007
    Publication date: October 16, 2008
    Applicant: Sumsung Electronics Co., Ltd.
    Inventors: Sun-nam Lee, Il-jun Lee, Jun-bum Shin, Sang-hong Lee, Ji-young Moon
  • Publication number: 20080250403
    Abstract: Provided is a method of limiting updating of firmware by distinguishing between model code that represents a group of hardware having firmware program codes are compatible with each other and model code that identifies each hardware belonging to the group. The method includes generating a data body having firmware program code that is to be updated; generating a data header having model code of hardware to which the data body is to be applied, wherein the hardware model code comprises first model code representing a group of hardware having firmware program codes are compatible with each other and second model code identifying each hardware belonging to the group; and generating a firmware update file by combining the data body and the data header.
    Type: Application
    Filed: October 23, 2007
    Publication date: October 9, 2008
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Ji-young Moon, Il-jun Lee, Jun-bum Shin, Sun-nam Lee, Sang-hong Lee
  • Publication number: 20080250144
    Abstract: Provided are a method and apparatus for controlling transmission of content data. In the method, a communication channel is initially established to transmit the content data, the content data is transmitted through the established communication channel, verification is performed a plurality of times to determine whether the content data is transmitted within an acceptable transmission range, and whether to continue the transmission of the content data is determined according to the verification result. Accordingly, when a client moves to a location outside a predetermined acceptable transmission range in a wireless environment, a server stops transmission of the content data. In addition, content data can be continuously transmitted regardless of interference caused by a temporary obstacle between a server and a client.
    Type: Application
    Filed: February 6, 2008
    Publication date: October 9, 2008
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Sang-su CHOI, Yang-Lim CHOI, Jun-bum SHIN, So-young LEE, Sun-Nam LEE, Ji-young MOON
  • Publication number: 20080226079
    Abstract: Provided is a method of conditionally decrypting content. In the method, whether a content key for encrypting and/or decrypting content is revoked is determined, and encrypted content is selectively decrypted using the content key.
    Type: Application
    Filed: October 22, 2007
    Publication date: September 18, 2008
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Myung-sun KIM, Hak-soo Ju, Ji-young Moon
  • Publication number: 20080229104
    Abstract: A mutual authentication method using a mediation module and a system therefor are provided.
    Type: Application
    Filed: October 2, 2007
    Publication date: September 18, 2008
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Hak-soo JU, Myung-sun Kim, Ji-young Moon
  • Publication number: 20080229094
    Abstract: A method of transmitting content between devices and a system therefor are provided. The method of transmitting encrypted content in a state in which the encrypted content and license information is stored and in which an external device is connected, includes: transmitting the license information corresponding to the encrypted content to the external device; transmitting the encrypted content to the external device, when receiving a request for transmitting the encrypted content from the external device; and updating the license information. Accordingly, content can be rapidly and stably transmitted between the devices. Also, it is possible to improve the accuracy and the security in the procedure of updating the license information.
    Type: Application
    Filed: October 19, 2007
    Publication date: September 18, 2008
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Ji-young Moon, Myung-sun Kim, Hak-Soo Ju
  • Publication number: 20080229015
    Abstract: A portable memory apparatus having a content protection function is provided. The portable memory apparatus includes a memory and a memory control unit. The memory includes a read-only memory area which stores content and is set to so that only read operations are allowed, a writable memory area which is set so that read and write operations are allowed, and a special memory area which stores information needed to operate the portable memory apparatus and is set so that only authenticated programs are allowed to read from and/or write to the special memory area. The memory control unit controls the read and write operations on each of the areas.
    Type: Application
    Filed: October 29, 2007
    Publication date: September 18, 2008
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Myung-sun Kim, Hak-soo Ju, Ji-young Moon
  • Publication number: 20080219451
    Abstract: Provided are a method and a system for mutual authentication between mobile and host devices. The mobile device stores a first secret key and is connected to the host device. The method includes generating a second secret key using the first secret key and first data that is received from the host device and is encrypted using a predetermined method. The method further includes transmitting second data that is encrypted using a predetermined method, to the host device to induce generation of a media key; performing an operation on the second secret key and transmitting a generated operation value to the host device; and performing mutual authentication between the mobile device and the host device.
    Type: Application
    Filed: December 17, 2007
    Publication date: September 11, 2008
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Hak-soo JU, Myung-sun Kim, Ji-young Moon
  • Publication number: 20080201782
    Abstract: A method and apparatus for managing digital content are provided. The apparatus for managing digital content generated by applying digital rights management (DRM) includes: a content execution unit executing digital content; and a control unit confirming whether or not digital content is in a first period in which the digital content can be normally executed, and controlling the content execution unit so that, if the digital content is in the first period, the digital content can be executed normally, and if the digital content is in a second period which is not in the first period, the digital content can be executed in a manner which can be distinguished from that of execution in the first period. According to the apparatus and method, execution of digital content, which is close to expiration, can be controlled, thereby managing the expiration of the digital content for a user.
    Type: Application
    Filed: January 15, 2008
    Publication date: August 21, 2008
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Ju-hee SEO, Myung-sun KIM, Hak-soo JU, Ji-young MOON, Mi-hwa PARK
  • Publication number: 20080177999
    Abstract: Provided are an apparatus and method for determining the integrity of content in at least one packet of a plurality of packets. A content using apparatus includes a receiver which receives a transport packet including content in at least one packet and a secret set, which includes an integrity check key generated for determining the integrity of the content, and extracts the secret set by processing the transport packet, a storage unit which stores the secret set, a controller which uses the secret set to determine whether each packet having the content maintains integrity, and a data processing unit which processes the at least one packet if the at least one packet is determined to be maintaining integrity. Accordingly, when content is transmitted, the integrity of the content can be checked using only a small amount of transmission data and a small amount of computation.
    Type: Application
    Filed: January 22, 2008
    Publication date: July 24, 2008
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Mi-hwa PARK, Myung-sun KIM, Hak-soo JU, Ji-young MOON, Ju-hee SEO
  • Publication number: 20080118060
    Abstract: A method of decoding/encoding a content file is provided. The method of decoding a content file includes dividing an encoded content file into a plurality of data blocks, grouping the plurality of data blocks into a plurality of groups, generating a group content key for each of the plurality of groups, generating a plurality of block keys for the data blocks in each of the plurality of groups from the group content key generated for each of the plurality of groups, and decoding the plurality of data blocks using the plurality of block keys.
    Type: Application
    Filed: January 18, 2007
    Publication date: May 22, 2008
    Applicant: SAMSUNG ELECTRONCS CO., LTD.
    Inventors: Myung-Sun Kim, Hak-soo Ju, Ji-young Moon, Ju-hee Seo, Mi-hwa Park
  • Publication number: 20080097923
    Abstract: A method and apparatus for providing digital rights management (DRM) content and a license, and a method and apparatus for using DRM content are provided. The method of providing DRM content and a license includes selecting usage conditions for content; transforming the usage conditions into a secure database (DB); and adding the secure DB to a license. The method of using DRM content generated by applying DRM includes searching for a license corresponding to the DRM content; authenticating a user who wants to use the DRM content; extracting usage conditions included in the license by using a secure DB agent, and confirming whether or not an action desired to be performed by the user satisfies the usage conditions; and if the action desired to be performed by the user satisfies the usage conditions, using the DRM content according to the action.
    Type: Application
    Filed: March 9, 2007
    Publication date: April 24, 2008
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Myung-sun Kim, Ji-young Moon, Ju-hee Seo, Mi-hwa Park
  • Publication number: 20070219922
    Abstract: A method and apparatus for generating and updating a license for content and for providing content are provided. The method of generating a license includes generating license signature information for authenticating the license; generating use rule information for controlling the use of the content; generating authentication code information for authenticating a coupon for changing at least a portion of the use rule information; and generating key information required for decrypting the content.
    Type: Application
    Filed: January 9, 2007
    Publication date: September 20, 2007
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jun-bum Shin, Yong-Kuk You, Chi-hurn Kim, Young-sun Yoon, Ji-young Moon, Dave Ahn
  • Publication number: 20060080529
    Abstract: A digital rights management (DRM) conversion method and apparatus are provided. The DRM conversion method includes: (a) obtaining a first content key for the first content and a second content key for the second content through reciprocal authentication between a DRM conversion apparatus and a DRM conversion server, the DRM conversion apparatus converting the first content into the second content; and (b) converting the first content into the second content wherein the DRM conversion apparatus is disconnected from the DRM conversion server. Accordingly, it is possible to transmit content between devices using different DRM systems even offline with the use of a conversion manager (CM) that performs authentication and DRM conversion operations.
    Type: Application
    Filed: October 4, 2005
    Publication date: April 13, 2006
    Inventors: Young-sun Yoon, Chi-hurn Kim, Ji-young Moon, Yang-lim Choi