Abstract: A method of downloading data in a peer-to-peer service on a wired and wireless integrated network and a node therefore includes downloading the data to a requester node only through wired nodes among a plurality of nodes located in a download path between the requester node which requests the data and a holder node which has the data. Thereby, the file download rate can be improved, without reducing the retrieval success ratio according to the peer-to-peer method, and the storage space for the data of each node can be saved.

Abstract: Provided are a method, medium, and filter for removing discontinuity of an image. The filtering method includes determining the direction or gradient on a boundary of a block of an image divided into blocks of a predetermined size, based on pixel distribution between adjacent blocks and filtering the blocks based on the determined direction or gradient.

Abstract: A method, medium, and apparatus for 3-dimensional encoding and/or decoding of videos, including adapting to temporal and spatial characteristics of the videos. Methods include performing temporal estimation on videos taken by a camera located in a centerly position with reference to videos taken by the same camera at immediately previous times, when a plurality of other cameras are arranged in a row, and performing temporal-spatial estimation on videos taken by the other cameras with reference to previous videos taken by cameras adjacent to the camera located in the centerly position.

Abstract: A motion vector (MV) search method including: searching for an integer-pixel MV among integer pixels and choosing an integer pixel corresponding to the integer-pixel MV; searching for a half-pixel MV among half pixels around the chosen integer pixel and choosing a half pixel corresponding to the half-pixel MV; and searching, when the half pixel is chosen, for a quarter-pixel MV among only specified quarter pixels disposed between the chosen integer pixel and the chosen half pixel and around the chosen half pixel and choosing a quarter pixel corresponding to the quarter-pixel MV.