INFORMATION SIGNAL PROCESSING DEVICE, INFORMATION SIGNAL PROCESSING METHOD, IMAGE SIGNAL PROCESSING DEVICE AND IMAGE DISPLAY DEVICE USING IT, COEFFICIENT TYPE DATA CREATING DEVICE USED THEREIN AND CREATING METHOD, AND INFORMATION PROVIDING MEDIUM

摘要

An information signal processing device which is preferably applied to conversion, e. g., from an SD signal to an HD signal. Pixel data on a tap selectively taken out of the SD signal and corresponding to the position of interest of the HD signal are used to acquire the class (CL) to which the data on the pixel in the position of interest belongs. A coefficient creating circuit (136) creates data (Wi) on the coefficients of the classes on the basis of the class coefficient type data and the values of image quality adjusting parameters (h, v) by the operation of the user. An arithmetic circuit (127) employs an estimation formula to determine data on the pixel in the position of interest of the HD signal by using the data (xi) on the tap selectively taken from the SD signal by a tap selecting circuit (121) and corresponding to the position of interest of the HD signal and the coefficient data (Wi) read out of a memory (134) and corresponding to the class (CL). Coefficient data (Wi) corresponding to the value of any parameter can be produced to save the capacity of a memory.