Patent ID: RE41200

Claim:
Digital data conversion apparatus, comprising: memory means for storing class data for respective classes at addresses corresponding to said respective classes, said class data being associated with reference interpolated data and a reference standard definition digital video signal for each of said respective classes, said reference standard definition digital video signal and said reference interpolated data constituting a reference high definition digital video signal; means for receiving a standard definition digital video signal including a plurality of pixel data representing pixel values; means for clustering said pixel data of said standard definition digital video signal to produce a class in accordance with the pixel values of said pixel data; means for retrieving said class data from the one of said addresses of said memory means corresponding to said class of said standard definition digital video signal; and means for generating a plurality of interpolated data in accordance with said standard definition digital video signal and said retrieved class data, in which a position of at least one of said clustered pixel data of said standard definition digital video signal is spatially located at the same position of at least one of said generated interpolated data.