Generating a fingerprint of a bit sequence
US8086675B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 13, 2008 |
| Grant date | Dec 27, 2011 |
| Priority date | — |
| Expiry date | May 25, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L51/212
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method of generating a fingerprint of a bit sequence includes determining a relative occurrence frequency of each bit combination of a set of bit combinations in the bit sequence, wherein the set of bit combinations comprises all possible non-redundant sub-sequences of bits having at least one bit and at most a preset maximal number of bits. The method further includes determining for each bit combination of the set of bit combinations a difference value between the relative occurrence frequency of the bit combination and a random occurrence frequency, the random occurrence frequency relating to the expected random occurrence of the bit combination in the bit sequence. Moreover, the method includes allocating a set of bins, each bin of the set of bins being associated with a predetermined interval of difference values, each bin further relating to a bin value. The difference value of each bit combination is assigned to the bin which is associated with the interval of difference values in which the difference value of the corresponding bit combination lies. A fingerprint of the bit sequence is generated by use of the bin values of the bins to which a difference value has been assi…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.