Patent ID: 7679675

Claim:
A data conversion apparatus for producing high definition image data by converting standard definition image data, inputted as first data, into high definition image data, outputted as second data, comprising: inputting means for inputting the first data; class-tap generating means for generating, from the first data, a class tap used for classifying a specified sample being a main sample or a sub sample of the second data into a class of at least one class; classification means for classifying the specified sample based on the class tap; predictive-tap generating means for generating, from the first data, a predictive tap for determining the specified sample; main tap-coefficient obtaining means for obtaining a main tap coefficient for the class of the specified sample from tap coefficients obtained by learning for each of said at least one class; sub tap-coefficient obtaining means for obtaining a sub tap coefficient for the class of the specified sample from tap coefficients obtained by learning a relationship between supervisor data corresponding to the second data, which serves as a learning supervisor, and learner data corresponding to the first data, which serves as a learner, for each of said at least one class by giving a predetermined constraint condition to the supervisor data; computation means for determining the specified sample by using the predictive tap and the main tap coefficient and the sub tap coefficient for the class of the specified sample; and outputting means for outputting the second data composed of samples computed by the computation means, wherein the main tap coefficient corresponds to the main sample and the sub tap coefficient corresponds to the sub sample, and wherein the predetermined constraint condition represents a difference between the main sample and the sub sample of the second data.