Electronics and Telecommunications Research Institute

Korean Broadcasting System

Munhwa Broadcasting Corporation

Seoul Broadcasting System Co., Ltd.

Korea Educational Broadcasting System

Digicaps Co., Ltd.

Jeho Nam

Jooyoung Lee

Hyon-Gon Choo

Sangwoo Ahn

Sang-Kwon Shin

Jin-Woo Hong

Won-Sik Cheong

Moon-Kyun Oh

Jin Woong Kim

Kyeongok Kang

Bum-Suk Choi

Sung-Hwan Park

Min-Sik Park

Inje Cho

Sang-Jin Kim

Hyuntae Kim

Seung Hyup Shin

Sung-Jun Ahn

Hee-Young Jun

Keunsik Lee

Byung-Sun Kim

Sang-Gyou Lee

Younhee Kim

Jooho Song

Kihyeok Bae

Jea-Seung Jeong

Byoung-Soo Koh

Joosub Kim

YoungBae Byun

A holographic display simulation device and a holographic display simulation method are provided. A holographic display simulation device includes a processor; and a memory including one or more instructions, wherein the one or more instructions are executed by the processor, and a holographic display is simulated by using at least one of a light source part model, a spatial light modulator model, and a display optical system model that respectively model a light source part, a spatial light modulator, and a display optical system of the holographic display.

Holographic display simulation device and method

The present description may provide a method of generating a hologram measurement pattern for measuring image quality of holographic display, including: generating a test pattern and a common pattern including at least one grayscale bar; generating measurement pattern data by combining the common pattern with a frame of the test pattern; and generating the hologram measurement pattern by inserting a random phase into the measurement pattern data and an apparatus applied thereto, thereby more accurately measuring the quality of the 3D holographic image reproduced by the holographic display.

Apparatus for measuring quality of holographic display and hologram measurement pattern thereof

An apparatus for measuring a spatial resolution of a hologram reconstructed image optically reconstructed on a space is provided. The apparatus for measuring a spatial resolution of a hologram reconstructed image includes: a measuring unit measuring first spatial frequency resolving powers for a horizontal direction of the hologram reconstructed image and second spatial frequency resolving powers for a vertical direction of the hologram reconstructed image at first spatial positions having a predetermined interval in horizontal and vertical directions within a viewing angle range of the hologram reconstructed image; and an evaluating unit evaluating the spatial resolution of the hologram reconstructed image using the first spatial frequency resolving powers and the second spatial frequency resolving powers measured at each of the first spatial positions.

Method and apparatus for measuring and evaluating spatial resolution of hologram reconstructed image

Disclosed are a method of generating a watermark, a method of generating a broadcast content including the same, and a watermarking system. The method of generating a watermark according to an exemplary embodiment of the present disclosure includes: determining a size of a target image to which a broadcast content is provided; determining the number of watermarks to be inserted into one frame of the target image; generating a watermark insert pattern by using the size of the target image and the number of watermarks; and scaling up the watermark insert pattern to a predetermined pattern for inserting the watermark insert pattern into an original image of the broadcast content.

Watermark generating method, broadcast content generating method including the same and watermarking system

Provided are an apparatus and method for controlling program conversion according to program protection information. The method for controlling conversion of a broadcasting program includes: demultiplexing a broadcasting program into broadcasting program data and program protection information; encrypting the broadcasting program data based on distribution condition of the program protection information when recordation of the broadcasting program data is requested; and recording the encrypted broadcasting program data.

Apparatus and method for controlling conversion of broadcasting program based on program protection information

An apparatus for encrypting and recording a broadcasting program includes a packet input unit configured to receive packets of a broadcasting program to be recorded and sequentially output the packets, an encryption selector configured to receive the packets sequentially output from the packet input unit, selectively output the received packets to a first path and to a second path, wherein packets to be encrypted are output to the first path and packets not to be encrypted are output to the second path, an encryption processor configured to encrypt the packets output to the first path based on a predetermined encryption method, and a storing unit configured to store the encrypted packets from the encryption processor or store the packets output to the second path.

Apparatus and method for recording partial encryption of broadcast program

A terminal for reproducing a digital content in support of transmitting/receiving the digital content to/from another terminal based on whether a terminal is registered in a domain and whether a terminal belongs to a person use scope such that the terminal belonging to the person use scope is not registered in the domain.

Digital contents reproducing terminal and method for supporting digital contents transmission/reception between terminals according to personal use scope

Disclosed is a broadcasting signal receiving apparatus for controlling use of a broadcasting program using a signature in program information and a method thereof. The broadcasting signal receiving apparatus includes a communicating unit for receiving a broadcasting signal, an extracting unit for extracting a broadcasting program and program information from the received broadcasting signal, and a determining unit configured to generate a temporal signature for confirmation (confirmation signature) which determines whether the program information is changed or not from the original program information and determine validity of the program information by comparing a signature included in the extracted program information with the confirmation signature.

Apparatus and method for controlling use of broadcasting program using signature in program information

A system for authenticating personal use of contents by using a portable storage medium includes: a portable personal use authentication device configured to store domain authentication information; and a contents personal use authentication apparatus configured to extract playback information for playing a provided content based on the domain authentication information and provide the extracted playback information to a player.

Apparatus and method for authenticating personal use of contents by using portable storage

An apparatus for extracting spatio-temporal feature and detecting video copy based on the same in a broadcasting communication system, the apparatus includes: an original video feature extractor configured to receive an original video and extract spatio-temporal feature of the original video; an original video feature database configured to store the extracted feature; a query video feature extractor configured to receive a query video and extract spatio-temporal feature of the query video; and a feature comparison and decision unit configured to compare the spatio-temporal feature of the original video and the spatio-temporal feature of the query video and decide similarity of the original video and the query video based on the spatio-temporal features of the original video and the query video.

Method and apparatus for extracting spatio-temporal feature and detecting video copy based on the same in broadcasting communication system

Provided are an apparatus for executing interoperable digital rights management (DRM) using a contents device and a method of performing an operation between the contents device and a DRM tool for interoperable DRM, and more particularly, a method and apparatus for executing a DRM tool in various environments, regardless of the type of device or type of DRM tool, using an interfaced DRM executing apparatus including a DRM processor or a DRM tool agent.

Apparatus for executing interoperable digital rights management using contents device and method of performing operations between contents device and digital rights management tool for interoperable digital rights management

Growing community of inventors

Daejeon, South Korea

Jeho Nam