Linear feedback shift registers for data scrambling
US4965881A · kind A · utility
41Cited by
5References
14Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 7, 1989 |
| Grant date | Oct 23, 1990 |
| Priority date | — |
| Expiry date | Sep 7, 2009 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04J2203/0089
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A linear feedback shift register for use as a SONET data scrambler, operating in accordance with a generating polynomial of order n corresponding to an n by n transition matrix T, comprises k storage cells, where k>n, for producing a k-bit word, and linear feedback interconnections specified by a k by k transition matrix which is the k-th power of a k by k transition matrix constituted by the matrix T extended by k-n additional rows and columns. Specific examples are described for k=8 and k=16.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.