Verfahren zur Simulation des Zustands eines Schieberegisters mit linearer Rückkopplung

摘要

The present invention discloses a method of simulating the state of a TYPE I Linear Feedback Shift Register (LFSR 100) with information available as a result of a TYPE II LFSR (500) implementation. This is accomplished by clocking a TYPE II LFSR (500) to produce an output sequence. This sequence, or at least a portion thereof, is then stored in a storage medium (501), such as, for example, a shift register. Cascading a TYPE II LFSR (500) output sequence into a shift register of length N, where N is the number of stages employed by the TYPE II LFSR (500), is the exact equivalent of a TYPE I LFSR (100). Accordingly, the shift register (501) content will contain data corresponding to the state of a TYPE I LFSR (100).