Pseudo-random generator
US5218559A · kind A · utility
14Cited by
2References
6Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Jan 8, 1992 |
| Grant date | Jun 8, 1993 |
| Priority date | — |
| Expiry date | Jan 8, 2012 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2209/125
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
The generator of the invention includes an initialization circuit (CI) delivering four initialization words (QI, RI, SI, TI), one calculation circuit (CC) composed of four sub-units (SQ, SR, SS, ST) corresponding to four generating polynomials of orders 5, 5, 7 and 7, and finally one output logic circuit (CS) delivering a pseudo-random byte sequence. Application for systems with access control, especially television systems.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.