Patent ID: 7672914

Claim:
A coefficient-data generating apparatus for generating coefficient data for converting a standard definition image signal, which is a first information signal, into a high-definition image signal, which is a second information signal, the coefficient-data generating apparatus comprising: determining means for determining a subject point in a second learning signal corresponding to the second information signal as a feature point having a predetermined feature when the information data at the subject point is greater than a maximum value of the plurality of pieces of information data at adjacent points, or when the information data at the subject point is less than a minimum value of the plurality of pieces of information data at adjacent points; data selecting means for selecting a plurality of pieces of information data at the subject point which is determined as the feature point by the determining means, and the plurality of pieces of information data at peripheral positions of the subject point in the second learning signal, based on a first learning signal corresponding to the first information signal; and calculating means for calculating the coefficient data using information data at the subject point which is determined as the feature point by the determining means, and the plurality of pieces of information data at peripheral positions of the subject point in the second learning signal by the data selecting means, wherein the coefficient data is used to generate pixel data, and the pixel data is provided to an output terminal.