Statistical compressibility determination system and method
US9059729B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 2, 2014 |
| Grant date | Jun 16, 2015 |
| Priority date | — |
| Expiry date | Jun 2, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M7/6064
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A compression algorithm is disclosed in which compressibility of an input frame is determined. If a frame is found to be compressible, it is input to a compression algorithm, otherwise the frame may bypass the compression algorithm. Literals of length N bits in a frame are sorted into 2^N bins such a counter Bi indicates a number of literals of value i. The maximum and minimum counter values are evaluated to estimate the compressibility of the file. For example, if Bmax is the maximum counter value and Bmin is the minimum counter value, then If Bmax<A*Bmin (A being a value greater than 1, e.g. 4), the frame may be deemed to be uncompressible, otherwise the frame may be deemed to be compressible and compressed according to the DEFLATE algorithm or some other compression algorithm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.