Patent Document ID: 20070250185
Application ID: 11785711
Patent Flag: 0

Claim One:
1. A method for verifying a parameter value against a predetermined threshold function, said method comprising the steps of: a) retrieving a sequence of reference values, each reference value being associated with a respective sampling point N, said reference values representing a threshold function at said respective sampling points N; b) associating a profile type with said threshold function, said profile type being arranged, when combined with said sequence of reference values, to provide an approximation to said threshold function for a region of said threshold function between said reference values; c) receiving a parameter value for verification against said threshold function, said parameter value being associated with a discrete time P; d) combining at least some of said sequence of reference values with said profile type to provide an approximation of said threshold function; and e) verifying said parameter value against said approximation of said threshold function.