Patent ID: 7280152

Claim:
A coefficient seed data production device for producing and outputting coefficient seed data, said coefficient seed data being coefficient data in a production equation for producing coefficient data used in an estimation equation for converting a first informational signal containing multiple items of informational data into a second informational signal containing multiple items of informational data, comprising: history information inputting means for allowing history information to be inputted, said history information being associated with a value of a parameter for determining quality of output obtained from said second informational signal, said parameter being included in said production equation; parameter inputting means for allowing a value of the parameter for determining quality of output obtained from a student signal corresponding to said first informational signal to be inputted, said value corresponding to the parameter contained in said production equation; parameter adjusting means for adjusting the value of the parameter inputted to said parameter inputting means, based on the history information inputted to said history information inputting means; first data selection means for selecting multiple items of first informational data located on a periphery of an objective position in a teacher signal corresponding to said second informational signal based on said student signal; class detection means for detecting a class including informational data of said objective position based on the multiple items of said first informational data selected by said first data selection means; second data selection means for selecting multiple items of second informational data located on a periphery of the objective position in said teacher signal based on said student signal; and calculation means for obtaining said coefficient seed data for each class using the class detected by said class detection means, the multiple items of said second informational data selected by said second data selection means, and the informational data of the objective position in the teacher signal.