Time varying data permutation apparatus and methods
US8601340B2 · kind B2 · utility
5Cited by
4References
21Claims
0Family size
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Key dates
| Filing date | Jul 25, 2011 |
| Grant date | Dec 3, 2013 |
| Priority date | — |
| Expiry date | Jan 12, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L1/0071
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
Multiple data permutation operations in respective different dimensions are used to provide an overall effective data permutation using smaller blocks of data in each permutation than would be used in directly implementing the overall permutation in a single permutation operation. Data that has been permuted in one permutation operation is block interleaved, and the interleaved data is then permuted in a subsequent permutation operation. A matrix transpose is one example of block interleaving that could be applied between permutation operations.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.