Abstract: An image encoding/decoding method is provided. An image decoding method of the present invention may comprise deriving an intra-prediction mode of a current luma block, deriving an intra-prediction mode of a current chroma block based on the intra-prediction mode of the current luma block, generating a prediction block of the current chroma block based on the intra-prediction mode of the current chroma block, and the deriving of an intra-prediction mode of a current chroma block may comprise determining whether or not CCLM (Cross-Component Linear Mode) can be performed for the current chroma block.

Abstract: Mobile terminals and a communication method using the same in which a mobile terminal includes a display unit to display image information processed in the mobile terminal; a conversion unit to convert an image signal corresponding to the image information output from the display unit into an electric signal; and an electrical output unit to output the electric signal converted by the conversion unit. Further, a mobile terminal includes an electrical reception unit to receive an electric signal for image information; a conversion unit to convert the electric signal received by the electrical reception unit into an image signal; and a display unit to display image information corresponding to the image signal converted by the conversion unit.