Patent ID: 6501470
Filing Date: 2002-12-31
Classification: G06F,G06T,G09G

Abstract:
A look-up table device for converting a digital input value into a digital output value, comprising:section deriving means for receiving said digital input value, deriving the section to which said digital input value belongs, and outputting section information that is specifies said section; computation parameter output means for receiving said section information and outputting a computational parameter corresponding to said section information; and computation means for receiving said digital input value and said computation parameter, performing a given computation based on said digital input value and said computation parameter, and outputting the result of said computation as said digital output value; wherein said computation parameter output means outputs the coefficients am to a0 of the expression amxm+amâˆ’1xmâˆ’1+ . . . a1x+a0 in m (where m is greater than or equal to 1) degree expression, as said computation parameters; and said computation means obtains amxm+amâˆ’1xmâˆ’1+ . . . a1x+a0, based on x that is specified by said digital input value and am to a0 that are included within said computation parameters, and outputs the obtained result as said digital output value.