Method of simulating the state of a linear feedback shift register
US5073909A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 19, 1990 |
| Grant date | Dec 17, 1991 |
| Priority date | — |
| Expiry date | Jul 19, 2010 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2207/583
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
The present invention discloses a method of simulating the state of a TYPE I Linear Feedback Shift Register (LFSR) with information available as a result of a TYPE II LFSR implementation. This is accomplished by clocking a TYPE II LFSR to produce an output sequence. This sequence, or at least a portion thereof, is then stored in a storage medium, such as, for example, a shift register. Cascading a TYPE II LFSR output sequence into a shift register of length N, where N is the number of stages employed by the TYPE II LFSR, is the exact equivalent of a TYPE I LFSR. Accordingly, the shift register's contents will contain data corresponding to the state of a TYPE I LFSR.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.