Patent ID: 7197000
Filing Date: 2007-03-27
Classification: G06F,G11B

Abstract:
1. A method of providing a computer readable medium containing reference data, said reference data being comprised of an efficient sequence of “n m +m−1” n-level random numbers, each sub-sequence of “m” successive random numbers thereof having a different pattern, said method comprising the steps of: generating a sequence of n-level random numbers based on an initial value, a number being generated at a time; determining whether a pattern of a sub-sequence of “m” successive random numbers including the newly generated number and “m−1” preceding numbers in an order of the generation thereof is “used”, if said pattern of said sub-sequence is “used”, setting a different value to said initial value; if said pattern of said sub-sequence is not “used”, accepting the newly generated number and marking said pattern as “used”; wherein all of the steps are repeated until all of “n recording said n-level random numbers of said efficient sequence of said n-level random numbers as said reference data on said computer readable medium.