Method and system for 2D comb filtering of a PAL video signal
US7394502B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 17, 2004 |
| Grant date | Jul 1, 2008 |
| Priority date | — |
| Expiry date | May 10, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N9/78
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Methods and systems for 2D comb filtering of a PAL video signal are provided. The method may comprise generating a plurality of interpolated pixels for corresponding video samples in non-adjacent pixel lines for a video frame. At least one direction of least bandwidth may be determined among the video samples and the interpolated pixels. The method may blend combing in the determined direction of least bandwidth. A plurality of interpolated pixels for corresponding video samples may be generated in a first pixel line of the video frame. The plurality of interpolated pixels in the first pixel line may be shifted, so that each of the plurality of interpolated pixels in the first pixel line is one quarter cycle phase-shifted from a corresponding adjacent pixel in the first pixel line.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.