Patent ID: 7551230

Claim:
A coefficient seed data production device for producing coefficient seed data, said coefficient seed data being coefficient data in a production equation for producing coefficient data to be used in an estimated equation employed for converting a first information signal including a first plurality of information data into a second information signal including a second plurality of information data, said production equation using positional information as a parameter, comprising: signal processing means for performing a conversion processing on a teacher signal to obtain a student signal; positional shift means for shifting a position of said student signal with a position of said teacher signal, the information data position of said teacher signal being gradually changed with respect to said information data position of said student signal; first data selection means for selecting a plurality of first information data located in a periphery of a target position in said teacher signal, based on said student signal having a position shifted by said positional shift means; normal equation production means for producing a normal equation for obtaining said coefficient seed data using the selected plurality of said first information data and the information data at said target position in said teacher signal; and coefficient seed data calculation means for solving said normal equation to obtain said coefficient seed data.