Abstract: A method and apparatus for encoding and decoding an image by performing motion prediction and compensation on pictures in a group of pictures by selectively using a high-quality key picture that is previously encoded and restored, and a second picture that is previously encoded and restored. The method of encoding an image improves the prediction efficiency of an image by storing a key picture, which is encoded and restored to a high quality by reducing a loss caused by a quantization error using a small quantization coefficient, in a first storage unit and storing a previously encoded and restored second picture in a second storage unit, and then performing motion prediction and compensation by selectively using the key picture stored in the first storage unit and the second picture stored in the second storage unit while encoding a next picture in a group of pictures.

Abstract: Disclosed is a method of encoding a video, the method including: splitting a current picture into at least one maximum coding unit; determining a coded depth to output a final encoding result according to at least one split region obtained by splitting a region of the maximum coding unit according to depths, by encoding the at least one split region, based on a depth that deepens in proportion to the number of times the region of the maximum coding unit is split; and outputting image data constituting the final encoding result according to the at least one split region, and encoding information about the coded depth and a prediction mode, according to the at least one maximum coding unit.

Abstract: A display device capable of simplifying the structure and improving the reliability is disclosed. The display device includes an LCD module having a top case formed of metal, a glass substrate arranged on the LCD module, an infrared ray emitting module arranged to face three side surfaces of the LCD module and having a first magnet for first fixing to the top case, and a pair of infrared ray detection units arranged at corner ends of a side surface of the LCD module where the infrared ray emitting module is not arranged and having a second magnet for the first fixing to the top case.

Abstract: A color image encoding and decoding method and apparatus use a correlation between chrominance components in order to improve coding efficiency. The color image decoding method includes: transforming chrominance components of a color image in each of two or more inter-prediction modes, calculating costs for the conversion values in each of the two or more inter-prediction modes using a predetermined cost function, selecting one of the two or more inter-prediction modes based on the calculation result, and outputting conversion values of the selected inter-prediction mode; entropy encoding the output conversion values.

Abstract: Disclosed is a method of encoding a video, the method including: splitting a current picture into at least one maximum coding unit; determining a coded depth to output a final encoding result according to at least one split region obtained by splitting a region of the maximum coding unit according to depths, by encoding the at least one split region, based on a depth that deepens in proportion to the number of times the region of the maximum coding unit is split; and outputting image data constituting the final encoding result according to the at least one split region, and encoding information about the coded depth and a prediction mode, according to the at least one maximum coding unit.

Abstract: A method of and apparatus for encoding and decoding an image are provided. According to the method and apparatus, a virtual motion vector is assigned to a block which is encoded in intra prediction mode, and when a motion vector of a block which is encoded in inter prediction mode after the intra block is decoded, the virtual motion vector assigned to the intra block is used.

Abstract: An intraprediction encoding and decoding apparatus and method to improve compression efficiency are provided. A video encoding method includes dividing an input video of a predetermined size into at least two sub-planes, performing intraprediction encoding on at least one of the divided at least two sub-planes, and performing interprediction encoding on at least one of the remaining sub-planes by using the intraprediction encoded sub-plane as a reference sub-plane.

Abstract: Provided is a method and apparatus for image intraprediction encoding/decoding. The method for image intraprediction encoding includes an intraprediction unit which divides an input block into at least one first sub-block of a predetermined size, and performing intraprediction encoding on the at least one first sub-block according to a first sub-block processing order using pixel values of at least adjacent sub-blocks located to the right of and/or below the at least one first sub-block.

Abstract: Disclosed is a method of encoding a video, the method including: splitting a current picture into at least one maximum coding unit; determining a coded depth to output a final encoding result according to at least one split region obtained by splitting a region of the maximum coding unit according to depths, by encoding the at least one split region, based on a depth that deepens in proportion to the number of times the region of the maximum coding unit is split; and outputting image data constituting the final encoding result according to the at least one split region, and encoding information about the coded depth and a prediction mode, according to the at least one maximum coding unit.

Abstract: An image compression method and apparatus, in which coding efficiency is improved by coding multiple pictures through cross-reference between the pictures, and an image decompression method and apparatus. The image compression method includes dividing each of the pictures into predetermined slices, determining a prediction mode having higher efficiency and a coding order for each of corresponding slices of the pictures by performing prediction on the corresponding slices, and coding each of the slices in the determined prediction mode according to the determined order of coding. The pictures are coded through cross-reference between them.

Abstract: An apparatus and method for sharing a bus in a mobile telecommunication handset are provided. In one embodiment, a mobile telecommunication handset comprises a first device, a second device, a shared bus, a memory configured to store a reference clock frequency, and a controller configured to simultaneously receive first data from the first device and transmit second data to the second device via the shared bus based on a clock signal of the reference clock frequency. The first device is configured to forward the first data received by the controller, and the second device is configured to receive the second data transmitted by the controller.

Abstract: An image encoding and decoding method includes dividing an input image into a plurality of sub-planes by sub-sampling the input image, selecting one of the divided sub-planes and performing interprediction-encoding on the selected sub-plane, and performing interprediction-encoding on the remaining sub-planes based on motion vectors selected in interprediction-encoding of the selected sub-plane.

Abstract: An intraprediction method which improves compression efficiency using the symmetry of a video in the intraprediction of the video and a video encoding and decoding method and apparatus using the intraprediction method. The intraprediction method includes performing intraprediction by predicting a first region to be encoded in a video based on axial symmetry of a second region of the video with respect to a predetermined axis.

Abstract: An intraprediction encoding/decoding method and apparatus are provided. The intraprediction encoding method includes forming a flipped reference block by flipping pixels of a reference block used for intraprediction symmetrically with respect to a straight line of a predetermined direction passing through the center of the reference block, and performing intraprediction using the flipped reference block.

Abstract: A color image encoding and decoding method and apparatus use a correlation between chrominance components in order to improve coding efficiency. The color image decoding method includes: transforming chrominance components of a color image in each of two or more inter-prediction modes, calculating costs for the conversion values in each of the two or more inter-prediction modes using a predetermined cost function, selecting one of the two or more inter-prediction modes based on the calculation result, and outputting conversion values of the selected inter-prediction mode; entropy encoding the output conversion values.

Abstract: An intraprediction encoding/decoding method and apparatus are provided. The intraprediction encoding method includes forming a flipped reference block by flipping pixels of a reference block used for intraprediction symmetrically with respect to a straight line of a predetermined direction passing through the center of the reference block, and performing intraprediction using the flipped reference block.

Abstract: A color image encoding and decoding method and apparatus use a correlation between chrominance components in order to improve coding efficiency. The color image decoding method includes: transforming chrominance components of a color image in each of two or more inter-prediction modes, calculating costs for the conversion values in each of the two or more inter-prediction modes using a predetermined cost function, selecting one of the two or more inter-prediction modes based on the calculation result, and outputting conversion values of the selected inter-prediction mode; entropy encoding the output conversion values.

Abstract: An image encoding method is provided, in which image data divided into basic blocks is classified in units of groups and subgroups, wherein each group comprises at least one basic block and each subgroup comprises at least one basic block and is included in each group; an encoding mode for a predetermined group is determined in order to encode the predetermined group, wherein the encoding mode represents a mode for encoding data included in the predetermined group in units of one data processing unit selected from a group, a subgroup, and a basic block; and the data of the predetermined group is encoded according to the determined encoding mode. Detailed operations in the image encoding method are performed in consideration of the encoding mode of the group.

Abstract: Disclosed is a method of encoding a video, the method including: splitting a current picture into at least one maximum coding unit; determining a coded depth to output a final encoding result according to at least one split region obtained by splitting a region of the maximum coding unit according to depths, by encoding the at least one split region, based on a depth that deepens in proportion to the number of times the region of the maximum coding unit is split; and outputting image data constituting the final encoding result according to the at least one split region, and encoding information about the coded depth and a prediction mode, according to the at least one maximum coding unit.

Abstract: Disclosed are a method and apparatus for encoding an image whereby a current coding unit is predicted by variably controlling accuracy of a motion vector and motion compensation is performed according to the result of prediction, and a method and apparatus for decoding an image encoded by the method and apparatus for encoding an image.