PROCESSING APPARATUS AND PROCESSING METHOD FOR INFORMATION SIGNAL, GENERATING APPARATUS AND GENERATING METHOD FOR COEFFICIENT TYPE DATA USED THEREFOR, AND PROGRAM FOR EXECUTING EACH METHOD AND MEDIUM WITH THE PROGRAMRECORDED THEREON

摘要

PROBLEM TO BE SOLVED: To obtain a second information signal adapted to an output means in converting a first information signal (SD signal) into a second information signal (HD signal). SOLUTION: Conversion circuits 114, 115 convert values (pixel values) of a plurality of SD image data as data of a class tap into luminance values, respectively. The conversion circuits 114, 115 convert the pixel values into the luminance values on the basis of a correlation between the value of the pixel data and the luminance value of an image display device 105. Class detection circuits 116, 117 detect a space class and a motion class on the basis of a plurality of the luminance values and a class composite circuit 118 obtains a class code CL denoting a class to which pixel data in the HD signal at a target position belongs. An arithmetic circuit 122 uses data xi of a prediction tap and coefficient data Wi of the class denoted by the class code CL to obtain pixel data y1to y4at the target position in the HD signal on the basis of an estimate expression. Classification is properly carried out in matching with the luminance characteristic of the device 105. COPYRIGHT: (C)2005,JPO&NCIPI