Method of processing signals and apparatus for signal processing
US6704443B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 26, 2000 |
| Grant date | Mar 9, 2004 |
| Priority date | — |
| Expiry date | Apr 11, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N9/68
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An image processing apparatus operates to process input signal samples representative of at least part of a color video image to produce legal color signal samples representative of a legal color version of the image. The apparatus comprises an over sampling processor which operates to generate an over sampled version of the input signal samples by generating at least one extra signal sample for each base input signal sample, an adjustment factor generator, which operates to generate a plurality of adjustment factors which when combined with the input signal samples have an effect of converting illegal color pixels of the color image into legal color pixels, a color legalizer coupled to the adjustment factor generator, which operates to combine the adjustment factors with the input signal samples to produce the legalized color signal samples, a decimating processor coupled to the color legalizer which operates to decimate the legalized color signal samples to produce legalized signal samples having a sampling rate corresponding to that of the base input signal samples, a further adjustment factor generator, and a further color legalizer each of which is coupled to the output of the…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.