公开(公告)号：US08806212B2

公开(公告)日：2014-08-12

申请号：US12191464

申请日：2008-08-14

Applicant: Jun-Bum Shin ,  Choong-hoon Lee ,  Su-hyun Nam ,  Yang-lim Choi ,  Ji-soon Park

Inventor： Jun-Bum Shin ,  Choong-hoon Lee ,  Su-hyun Nam ,  Yang-lim Choi ,  Ji-soon Park

IPC: G06F21/00

CPC classification number: H04L9/3247 ,  G06F21/57 ,  G06F21/64 ,  H04L9/3236 ,  H04L2209/38 ,  H04L2209/603

Abstract: Provided are methods of generating and verifying an electronic signature of software data, wherein software data is split into a plurality of blocks, electronic signatures corresponding to each of the blocks are generated, and some of the electronic signatures are randomly selected for verification. Accordingly, a time required for verifying an electronic signature can be reduced while maintaining the advantages of an electronic signature system.

Abstract translation: 提供了生成和验证软件数据的电子签名的方法，其中软件数据被分割成多个块，生成与每个块相对应的电子签名，并且随机选择一些电子签名用于验证。 因此，可以在维护电子签名系统的优点的同时减少验证电子签名所需的时间。

公开(公告)号：US20080267396A1

公开(公告)日：2008-10-30

申请号：US11875187

申请日：2007-10-19

Applicant: Jun-bum Shin ,  Yang-lim Choi

Inventor： Jun-bum Shin ,  Yang-lim Choi

IPC: H04L9/28

CPC classification number: H04L9/0838 ,  H04L9/0891 ,  H04L2209/603

Abstract: A method and apparatus of sharing a bus key is provided, the method including receiving at a first device a device key, encrypted using an encryption key, from a storage device; decrypting the encrypted device key using a decryption key corresponding to the encryption key; creating a random number, and generating a bus key using the created random number and the decrypted device key, by which data to be transmitted through a bus can be encrypted using the bus key; and transmitting the generated bus key to a predetermined device connected to the first device via the bus.

Abstract translation: 提供共享总线密钥的方法和装置，该方法包括：在第一设备处从存储设备接收使用加密密钥加密的设备密钥; 使用与所述加密密钥对应的解密密钥解密所述加密设备密钥; 创建随机数，并且使用所创建的随机数和解密的设备密钥生成总线密钥，通过其可以使用总线密钥来加密要通过总线发送的数据; 以及经由所述总线将所生成的总线密钥发送到连接到所述第一设备的预定设备。

公开(公告)号：US07975141B2

公开(公告)日：2011-07-05

申请号：US11875187

申请日：2007-10-19

Applicant: Jun-bum Shin ,  Yang-lim Choi

Inventor： Jun-bum Shin ,  Yang-lim Choi

IPC: H04L9/32 ,  H04L9/00 ,  H04L9/08

CPC classification number: H04L9/0838 ,  H04L9/0891 ,  H04L2209/603

Abstract: A method and apparatus of sharing a bus key is provided, the method including receiving at a first device a device key, encrypted using an encryption key, from a storage device; decrypting the encrypted device key using a decryption key corresponding to the encryption key; creating a random number, and generating a bus key using the created random number and the decrypted device key, by which data to be transmitted through a bus can be encrypted using the bus key; and transmitting the generated bus key to a predetermined device connected to the first device via the bus.

Abstract translation: 提供共享总线密钥的方法和装置，该方法包括：在第一设备处从存储设备接收使用加密密钥加密的设备密钥; 使用与所述加密密钥对应的解密密钥解密所述加密设备密钥; 创建随机数，并且使用所创建的随机数和解密的设备密钥生成总线密钥，通过其可以使用总线密钥来加密要通过总线发送的数据; 以及经由所述总线将所生成的总线密钥发送到连接到所述第一设备的预定设备。

公开(公告)号：US07996322B2

公开(公告)日：2011-08-09

申请号：US10867817

申请日：2004-06-16

Applicant: Yong-kuk You ,  Myung-sun Kim ,  Yang-lim Choi ,  Yong-jin Jang

Inventor： Yong-kuk You ,  Myung-sun Kim ,  Yang-lim Choi ,  Yong-jin Jang

IPC: G06F21/00

CPC classification number: H04L63/0435 ,  G06Q20/3829 ,  H04L9/0822 ,  H04L9/3263 ,  H04L63/0823 ,  H04L2209/60

Abstract: A method of creating a domain based on public key cryptography includes providing, by a content-providing server, a list of devices requesting content, and selecting, by a user, a device from the list; transmitting, by the server, discrimination information on revoked devices to the device; extracting, by the device having received the discrimination information, a secret value from the discrimination information, preparing a certificate using the extracted secret value, and transmitting device information and the certificate of the device to the server; verifying, by the server, the certificate and creating a domain ID and a domain key using the device information; encrypting, by the server, the domain ID and the domain key using a unique public key of the device and transmitting the encrypted domain ID and domain key to the device; and restoring, by the device, the domain key using a unique secret key of the device.

Abstract translation: 基于公钥密码术创建域的方法包括：由内容提供服务器提供请求内容的设备列表，并由用户从列表中选择设备; 由所述服务器向所述设备发送被撤销设备的识别信息; 通过已经从识别信息接收到鉴别信息的设备提取秘密值，使用提取的秘密值准备证书，并将设备信息和设备的证书发送到服务器; 由服务器验证证书，并使用设备信息创建域ID和域密钥; 由服务器使用设备的唯一公钥加密域ID和域密钥，并将加密的域ID和域密钥发送到设备; 以及使用设备的唯一秘密密钥来恢复该设备的域密钥。

公开(公告)号：US20110103705A1

公开(公告)日：2011-05-05

申请号：US12939698

申请日：2010-11-04

Applicant: Yong-ju Lee ,  Hyun-seok Hong ,  Yang-lim Choi ,  Jin-gu Jeong

Inventor： Yong-ju Lee ,  Hyun-seok Hong ,  Yang-lim Choi ,  Jin-gu Jeong

IPC: G06K9/46 ,  G06K9/00

CPC classification number: H04N19/33 ,  H04N19/29 ,  H04N19/30

Abstract: An image encoding method and an image decoding method, the image encoding method including: degrading a quality of a first image which is obtained through a sensor of an imaging device to generate a second image having a target resolution; generating additional information which represents a transform relationship between the first and second images; and transmitting the additional information and the second image.

Abstract translation: 一种图像编码方法和图像解码方法，所述图像编码方法包括：降低通过成像装置的传感器获得的第一图像的质量，以生成具有目标分辨率的第二图像; 产生表示第一和第二图像之间的变换关系的附加信息; 以及传送附加信息和第二图像。

公开(公告)号：US07874004B2

公开(公告)日：2011-01-18

申请号：US11010280

申请日：2004-12-14

Applicant: Sung-hyu Han ,  Yun-sang Kim ,  Yang-lim Choi ,  Yong-kuk You ,  Hee-chul Han

Inventor： Sung-hyu Han ,  Yun-sang Kim ,  Yang-lim Choi ,  Yong-kuk You ,  Hee-chul Han

IPC: G06F7/04

CPC classification number: G11B20/00086 ,  G06F21/10 ,  G11B20/0021 ,  G11B20/00246

Abstract: Provided is a method of copying data stored in a first storage medium to a second storage medium. The method includes recording the encrypted data stored in the first storage medium on the second storage medium; reproducing a first content key, which is used to encrypt the encrypted data, using a first drive into which the first storage medium is loaded; encrypting the first content key; sending the encrypted first content key to a second drive into which the second storage medium is loaded; and recording the encrypted first content key on the second storage medium. In this method, encrypted data stored in a first storage medium is sent to a second storage medium via a host without decrypting the encrypted data, thereby preventing the data from being hacked or being accessed by unauthorized users and increasing a speed of copying the encrypted data.

Abstract translation: 提供了将存储在第一存储介质中的数据复制到第二存储介质的方法。 该方法包括将存储在第一存储介质中的加密数据记录在第二存储介质上; 使用加载有第一存储介质的第一驱动器再现用于加密加密数据的第一内容密钥; 加密第一内容密钥; 将加密的第一内容密钥发送到第二驱动器，第二驱动器装入第二存储介质; 以及将加密的第一内容密钥记录在第二存储介质上。 在该方法中，存储在第一存储介质中的加密数据经由主机被发送到第二存储介质，而不对加密的数据进行解密，从而防止数据被未经授权的用户入侵或被访问，并增加复制加密数据的速度 。

公开(公告)号：US07656951B2

公开(公告)日：2010-02-02

申请号：US10633617

申请日：2003-08-05

Applicant: Hyun-doo Shin ,  Yang-lim Choi ,  B. S. Manjunath ,  Xinding Sun

Inventor： Hyun-doo Shin ,  Yang-lim Choi ,  B. S. Manjunath ,  Xinding Sun

IPC: H04N7/12 ,  H04B1/66

CPC classification number: G06F17/30784 ,  H04N5/147 ,  H04N19/48

Abstract: A digital video processing method and an apparatus thereof are provided. The method for processing digital images received in the form of compressed video streams comprising the step of determining a region intensity histogram (RIH) based on information on motion compensation of inter frames. The RIH information is obtained based on the motion compensation values of inter frames, and the RIH information is a good indicator of motion information of a video scene. Also, since the RIH information is quite a good indicator of intensity of the video scene, video streams having similar intensities can be effectively searched by searching for similar video scenes based on the RIH information obtained by the digital video processing method.

Abstract translation: 提供了一种数字视频处理方法及其装置。 用于处理以压缩视频流形式接收的数字图像的方法，包括基于帧间运动补偿的信息来确定区域强度直方图（RIH）的步骤。 RIH信息是基于帧间的运动补偿值获得的，RIH信息是视频场景的运动信息的良好指标。 此外，由于RIH信息对于视频场景的强度是相当好的指标，因此可以通过基于通过数字视频处理方法获得的RIH信息搜索类似的视频场景来有效地搜索具有相似强度的视频流。

公开(公告)号：US07391864B2

公开(公告)日：2008-06-24

申请号：US10623800

申请日：2003-07-22

Applicant: Yang-lim Choi ,  Yun-ho Choi ,  Yun-sang Kim

Inventor： Yang-lim Choi ,  Yun-ho Choi ,  Yun-sang Kim

IPC: H04L9/12

CPC classification number: H04N7/1675 ,  H04N21/23476 ,  H04N21/63345 ,  H04N21/63775

Abstract: An apparatus and method to encrypt data having hierarchical information are provided. The apparatus includes an N-th layer key generator, which generates an N-th layer key, an (N+1)-th layer key generator, which generates an (N+1)-th layer key by applying the N-th layer key to a predetermined function, an N-th layer data encryptor, which encrypts N-th layer data using the N-th layer key, and an (N+1)-th layer data encryptor, which encrypts (N+1)-th layer data using the (N+1)-th layer key.

Abstract translation: 提供了一种加密具有分层信息的数据的装置和方法。 该装置包括生成第N层密钥的第N层密钥生成器，第（N + 1）层密钥生成器，其通过应用第N层密钥生成第（N + 1）层密钥 第N层数据加密器，其使用第N层密钥对第N层数据进行加密;第（N + 1）层数据加密器，其加密（N + 1）层密钥， 使用第（N + 1）层密钥的第二层数据。

公开(公告)号：US07212667B1

公开(公告)日：2007-05-01

申请号：US09562077

申请日：2000-05-01

Applicant: Hyun-doo Shin ,  Yang-lim Choi ,  Yining Deng ,  Bangalore S. Manjunath

Inventor： Hyun-doo Shin ,  Yang-lim Choi ,  Yining Deng ,  Bangalore S. Manjunath

IPC: G06K9/00

CPC classification number: H04N1/644 ,  G06F17/3025 ,  H04N5/4401

Abstract: A color image processing method is provided. The color image processing method includes the step of: (a) indexing a color image by assigning representative colors of an image to a color space divided into a plurality of regions. The color image processing method may be applied to object-based image processing such as MPEG-7, and fast search and retrieval of multimedia content can be made.

Abstract translation: 提供彩色图像处理方法。 彩色图像处理方法包括以下步骤：（a）通过将图像的代表颜色分配给划分为多个区域的色彩空间来对彩色图像进行索引。 彩色图像处理方法可以应用于诸如MPEG-7的基于对象的图像处理，并且可以进行多媒体内容的快速搜索和检索。

公开(公告)号：US07023441B2

公开(公告)日：2006-04-04

申请号：US09885171

申请日：2001-06-21

Applicant: Yang-lim Choi ,  Jong-ha Lee

Inventor： Yang-lim Choi ,  Jong-ha Lee

IPC: G06T11/20 ,  G06K9/46 ,  G06K9/44

CPC classification number: G06F17/30259 ,  G06K9/6204 ,  G06T7/20 ,  G06T9/00 ,  G06T9/20

Abstract: A method for extracting from an image a shape descriptor which describes shape features of the image is provided. The shape descriptor extracting method includes: (a) extracting a skeleton from an input image, (b) obtaining a list of straight lines by connecting pixels based on the extracted skeleton, and (c) determining the regularized list of straight lines obtained by normalizing a list of straight lines as the shape descriptor. A shape descriptor extracted according to the shape descriptor extracting method possesses information of a schematic feature of a shape included in an image. Therefore, the shape descriptor extracting method effectively extracts a local motion in the data collection of the same category, and the number of extracted shapes is not limited to the number of objects.