Method intended for loss-free compression of signals of wide dynamic range with a view to their transmission
US6826227B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 26, 1999 |
| Grant date | Nov 30, 2004 |
| Priority date | — |
| Expiry date | Jul 26, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V1/223
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method for loss-free compression of signals of wide dynamic range, such as seismic signals, includes sampling the signals, digitizing the signals, and using a predictive coding technique with transmission of prediction coefficients and of prediction residues. The method determines at least one amplitude range depending on a threshold value (S), that contains most of the prediction residues, codes the prediction residues by binary words having a number n of bits sufficient for coding of the range, and codes the prediction residues whose amplitude are outside this range, by binary words having a fixed number of bits greater than n.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.