Patent Document ID: 7509362
Application ID: 10464626
Patent Flag: 1

Claim One:
1. A method for use in a decoder system for decoding compressed audio or video data by approximating a non-linear function for a particular value, said method comprising: determining a range comprising the particular value; scaling the value to another range, thereby resulting in a scaled value; calculating with fixed point arithmetic operations, a finite order polynomial function for the scaled value; denormalizing the finite order polynomial function for the scaled value by multiplying the finite order polynomial function with a scaling constant associated with the range comprising the particular value; storing a plurality of ranges including the range comprising the particular value, each of said ranges having a minimum value and maximum value in a data memory; receiving an input; calculating the denormalized polynomial function as a function of the input; receiving compressed audio or video data; and outputting decompressed audio or video data, wherein the decompressed audio or video data is a function of at least the calculated denormalized polynomial function.