Data record size reduction at fixed information content
US9728385B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 15, 2012 |
| Grant date | Aug 8, 2017 |
| Priority date | — |
| Expiry date | Sep 21, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J49/40
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A time-of-flight (TOF) mass spectrometer analyzes a sample producing a time series of data points representing amounts of detected ions per unit time. A spectrometer resolution, a spectrometer digitization time period, and a minimum number points per peak needed to maintain the information content of a peak are received. A peak width value is calculated for each point from the resolution and a time of each point. The calculated peak width value for each point is divided by the minimum number points per peak. A maximum time difference between points for each point is produced. A point is selected based on the digitization time period. Adjacent points of the selected point are found. If a difference between the adjacent points does not exceed a sum of a maximum time differences of the adjacent points, the selected point is deleted to compress the time series.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.