Apparatus for interleaving and de-interleaving data
US4394642A · kind A · utility
104Cited by
1References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 21, 1981 |
| Grant date | Jul 19, 1983 |
| Priority date | — |
| Expiry date | Sep 21, 2001 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M13/2785
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A novel interleaver-de-interleaver is provided which is adapted to store bits of a data stream after being error encoded. The data bits are stored in a random access memory in addresses identifiable by an array of columns and rows. The interleaver comprises address pointer means and logic for reading the data bits out of the memory addresses in a predetermined reordered sequence to provide a quasi-random pattern sequence of data bits which when transmitted are substantially immune to periodic bursts of radio frequency interference signals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.