Noise reducing/resolution enhancing signal processing method and system
US6615162B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 6, 2000 |
| Grant date | Sep 2, 2003 |
| Priority date | — |
| Expiry date | Jan 18, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N5/21
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A noise reduction/resolution enhancement signal processing method and system is disclosed, wherein the influence of noise spikes and gaps is substantially reduced. The data for the noise reduction may be amplitudes (bx) measured at corresponding values (x) over a given domain D, wherein the data defines a composite wave form. The composite wave form is decomposed into instances of a discrete wave form, each having reduced noise amplitudes. A candidate point c in D for, e.g., an amplitude extreme is determined for each discrete wave form instance (having unknown amplitude). A minimization technique determines a first set of discrete wave form instances (having known amplitudes) by collapsing on the amplitudes (bx) from above. A maximization technique determines a second set of discrete wave form instances (having known amplitudes) by rising up to the amplitudes (bx) from below. For each point c, a determination is made as which of the corresponding instances from the first and second sets results in a better reduction in noise, and this determination is used to provide a resulting discrete wave form instance at c. Embodiments of the invention are disclosed for mass and light spectro…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.