Abstract:
PURPOSE: A broadcast content processing device and a method thereof are provided to enable a client terminal to generate additional information related to broadcast content using a keyword. CONSTITUTION: A receiving unit(910) receives broadcast content. The broadcast content comprises caption information. A caption extracting unit(920) extracts the caption information from the received broadcast content. A keyword detecting unit(930) detects one or more keywords from the caption information. One or more keywords are related to the broadcast content. A transmission unit(940) transmits one or more keywords to a client terminal.
Abstract:
PURPOSE: A network-based remote forensic system is provided to easily use evidence data with the accumulation of collected evidence data. CONSTITUTION: One or more remote terminals(240) interlink an evidence device(110) in a remote place. The remote terminal performs forensic for the evidence device with a virtual forensic tool. An investigation center system(200) is connected through a wide area network to the remote terminal. The investigation center system offers the virtual forensic tool. The investigation center system processes the requirement of the remote terminal.
Abstract:
PURPOSE: A device and method for providing broadcasting in a broadcasting system are provided to protect the copyright of a broadcasting program. CONSTITUTION: A broadcasting program information providing device includes a demultiplexing unit(112), a decoding unit(113), and a processing unit(110,120). The demulitplexing unit demultiplexes broadcasting data received from a broadcasting station. The decoding unit decodes the demulitplexed data. The processing unit including information of the broadcasting program in an electronic program guide by extracting and storing information of a broadcasting program corresponding to a broadcasting data by using an identifier of the confirmed broadcasting data.
Abstract:
PURPOSE: A terminal for reproducing digital content and a method for transceiving digital content are provided to generate authentication information of private usage through converting encrypted information of a digital contents according to usage range of a terminal, thereby permitting usage of the digital contents in terminal within private usage range which is not registered in a private usage group. CONSTITUTION: An encryption unit(330) encrypts a digital contents. A usage range determination unit(320) determines the usage range of other terminal. According to a determination result of the usage range determination, a private usage authentication information generator(340) generates private usage authentication information through converting encrypted information of the digital contents. A communication unit(310) transmits the encrypted digital contents and the private usage authentication information.
Abstract:
PURPOSE: A broadcasting program protection method and a system thereof are provided to store the encryption key information and package key information together with the encrypted broadcasting program or to store them separately. CONSTITUTION: A first encryption key generating unit(207) generates the first encryption key for the encoding of the broadcasting program. A broadcasting program encryption unit(209) generates the information about the first encryption key. A package key generating unit(211) generates the information for the package key and the package key in which the first encryption key is encrypted with the second encryption key. A storage(205) stores the information about the first encryption key, and the information for the package key and package key.
Abstract:
PURPOSE: A broadcast signal receiving device for controlling a broadcast program using a signature of program information and a method thereof are provided to control the use of a broadcast program using a signature included in program information. CONSTITUTION: A communication unit(210) receives a broadcast signal. An extracting unit(220) extracts a broadcast program and program information from the received broadcast signal. A determining unit(230) generates a signature for verification to check whether the program information is changed from the extracted program information. The determining unit compares the signature of the extracted program information with the signature for the verification. The determining unit determines the validity of the program information.
Abstract:
PURPOSE: A system and a method for authenticating the personal-use of contents through portable media are provided to use the contents without a restriction by confirming a registered domain key of a user. CONSTITUTION: A packager(230) depackages contents into a package key, package key information, and encrypted contents. An access controller extracts the domain information from the contents which is provided from the package key information. The access controller(240) extracts the reproduction information from the contents which is provided from the package key in the event the domain information and domain authentication information are identical. A controller(220) controls the operation of the packager and the access controller. The encrypted contents are provided to the controller and the controller provides the encrypted contents to a player(260).
Abstract:
PURPOSE: An apparatus and a method for transmitting/receiving a digital broadcast are provided to repetitively play stored advertisement contents after storing advertisement contents which are transmitted in non real time, thereby removing a need of repetitively transmitting the advertisement contents. CONSTITUTION: A broadcast receiver(101) receives advertisement contents and information about a play time of the advertisement contents. A contents storing unit(103) stores the received advertisement contents. A broadcasting controller(105) controls the play time of the stored advertisement contents according to the information for the play time of the advertisement contents. The broadcast receiver receives broadcast contents which are transmitted in real time and played. The broadcast controller controls the broadcast contents to be stored in the contents storing unit.
Abstract:
PURPOSE: An apparatus and a method for the conversion of digital broadcasting contents based on program protection information are provided to control the conversion of a broadcasting program by using a protection signal inserted into a broadcasting program, thereby preventing the illegal redistribution of the broadcasting program, including protection information. CONSTITUTION: A program transform control device demultiplexes a received broadcasting program into broadcasting data and a protection signal(202). In addition, the program transform control device encodes the broadcasting data based on the distribution condition of the program protection signal when recording is required(218). Furthermore, the control device records the encoded broadcasting program data(216,220).
Abstract:
본 발명은 비밀키 사전분배 방법에 관한 것으로서, 센터에서 트리 구조를 공개함에 따라 각 센서 노드가 공개된 트리 구조를 저장하는 트리 구조 설정 단계와, 센터에서 시드 키를 선택하고, 센터에서 트리 구조에 대응하여 해쉬 함수를 적용하여 해쉬 키를 추출하는 시드 키 및 해쉬 키 생성 단계와, 센터에서 각 센서 노드에 대응하는 각각의 수열을 선택하고, 상기 해당 각 센서 노드에 선택된 수열을 저장함과 아울러 이에 대응하는 해쉬 키를 저장하는 키 사전분배 단계를 진행함으로써, 높은 안전성을 제공할 뿐만 아니라 해쉬 계산량 등의 효율성에서도 우수한 효과가 있다. 키 사전분배 방식, 센서 네트워크