Digital data conversion equipment and a method for the same

A digital data conversion method, comprising the steps of:

• storing class data for respective classes at addresses in a memory 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;
• receiving a standard definition digital video signal including a plurality of pixel data representing pixel values;
• 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;
• retrieving said class data from the one of said addresses in said memory corresponding to said class of said standard definition digital video signal;
• and
• 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.

Digital data conversion apparatus for converting a video signal admitting of a first standard into a video signal admitting of a second standard, a resolution of said video signal admitting of said first standard being lower than a resolution of said video signal admitting of said second standard, comprising:

• memory means for storing class data for respective classes at addresses corresponding to said respective classes, said class data being associated with reference output data and reference input data admitting of said first standard for each of said respective classes, said reference input data admitting of said first standard and said reference output data constituting a reference digital video signal admitting of said second standard;
• means for receiving an input digital video signal including a plurality of pixel data and admitting of said first standard;
• means for clustering said pixel data of said input digital video signal to produce a class in accordance with values of said pixel data;
• means for retrieving said class data from one of said addresses of said memory means corresponding to said class of said input digital video signal admitting of said first standard;
• and
• means for generating a plurality of interpolated data in accordance with said input digital video signal and said class data which has been retrieved, said interpolated data and said input digital video signal constituting a signal admitting of said second standard, and wherein a position of at least one of said clustered pixel data of said input digital video signal is spatially located at the same position of at least one of said generated interpolated data.

Digital data conversion apparatus, comprising:

• means for generating class data associated with reference interpolated data and reference standard definition digital video signal for each of a plurality of respective classes, said reference standard definition digital video signal and said reference interpolated data constituting a reference high definition digital video signal;
• memory means for storing said class data for said respective classes of addresses corresponding to said respective classes;
• means for receiving a standard definition digital video signal having a plurality of pixel data;
• means for clustering said pixel data of said standard definition digital video signal to produce a class in accordance with 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.

A digital data conversion method, comprising the steps of:

• generating class data associated with reference interpolated data and a reference standard definition digital video signal for each of a plurality of respective classes, said reference standard definition digital video signal and said reference interpolated data constituting a reference high definition digital video signal;
• storing said class data for said respective classes at addresses in a memory corresponding to said respective classes;
• receiving a standard definition digital video signal having a plurality of pixel data;
• clustering said pixel data of said standard definition digital video signal to produce a class in accordance with values of said pixel data;
• retrieving said stored class data from the one of said addresses corresponding to said class of said standard definition digital video signal;
• and
• 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.