Abstract:
Disclosed is an encryption apparatus applying a KASUMI encryption algorithm. In the encryption apparatus, a round circuit is constructed through combination of an FL block with an FO block. The FL and FO blocks separate a secret key defined in the KASUMI encryption algorithm and provided from a secret key scheduler and 64-bit text data into 32-bit data, respectively, and perform specified encryption operation functions. The FO block is constructed through a multistage pipeline using a plurality of pipeline registers. The encryption apparatus has a low power consumption, and is small-sized in comparison to the conventional encryption apparatus using the MISTY or DES encryption algorithm. Also, the encryption apparatus can be applied to portable terminals and high-performance servers that require the low power consumption and the small size.
Abstract:
An apparatus for compressing low-complexity 3D mesh, includes: a data analyzing unit for decomposing data of an input 3D mesh model into vertices information, property information representing property of the 3D mesh model, and connectivity information between vertices constituting the 3D mesh model; a mesh model quantizing unit for producing quantized vertices, property and connectivity information of the 3D mesh model by using the vertices, property and connectivity information; and a sharable vertex analysis unit for analyzing sharing information between shared vertices of the 3D mesh model. Further, the apparatus includes a data modulation unit for performing a circular DPCM prediction by using quantized values of the consecutive connectivity information of the 3D mesh model; and an entropy encoding unit for outputting coded data of the quantized vertices and property information, and differential pulse-code modulated connectivity information as a bitstream.
Abstract:
An apparatus for 3D mesh compression based on quantization, includes a data analyzing unit (510) for decomposing data of an input 3D mesh model into vertices information (511 ) property information (512) representing property of the 3D mesh model, and connectivity information (515) between vertices constituting the 3D mesh model: and a mesh model quanitzing unit (520) for producing quantized vertices and property information of the 3D mesh model by using the vertices, property and connectivity information (511, 512, 513). Further, the apparatus for 3D mesh compression based on quantization includes a decision bit encoding unit (535) for calculating a decision bit by using the quantized connectivity information and then encoding the quantized vertex information, property information and connectivity information (511, 512, 513) by using the decision bit.
Abstract:
A multimedia application system uses metadata for sensory devices. The system includes: a sensory-device engine for generating a sensory device command (SDC) for controlling the sensory devices based on sensory effect information (SEI) generated to represent sensory effects by using the sensory devices depending on video contents, user preference information (UPI) of the sensory devices and device capability information (DCI) indicative of reproducing capability of the sensory devices; and a sensory-device controller for controlling sensory devices to perform sensory effect reproduction in response to the generated SDC.
Abstract:
A Radio Frequency Identification (RFID) privacy protection method and apparatus is provided. The RFID privacy protection method includes: receiving a password of a tag; reading a code value from the tag; performing authentication of a user with respect to the tag using the code value and the password; and deactivating the tag electrically or physically based on a result of the performing.
Abstract:
A 3D shape restoration method and a device of an object using multi-viewpoint image information are provided to obtain a realistic image by rendering restored results, thereby showing an excellent restoration quality for 3D shape restoration of a dynamic object. A silhouette and color extractor(104) inputs multi-viewpoint images for taking pictures of an object at various viewpoints. The silhouette and color extractor extracts silhouette information and color information. A visual hull restorer(106) configures a visual hull through silhouette intersection. A polygon approximation unit(108) moves along with a section of the visual hull. The polygon approximation unit approximates a sectional polygon to a geometric external form of the object by using the color information. A mesh structure generator(110) connects the approximated polygon in mesh structure. The mesh structure generator expresses a 3D geometric external form of the object.