Time varying data permutation apparatus and methods
US10567005B2 · kind B2 · utility
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20Claims
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Key dates
| Filing date | Sep 18, 2018 |
| Grant date | Feb 18, 2020 |
| Priority date | — |
| Expiry date | Sep 18, 2038 |
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.