Video signal processing
US7425993B2 · kind B2 · utility
0Cited by
8References
26Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 29, 2003 |
| Grant date | Sep 16, 2008 |
| Priority date | — |
| Expiry date | Oct 22, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N5/91
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method of generating an orthogonally sampled video signal based on a line phase measure. In a first aspect the input signal is sampled by a clock locked to the average line frequency of a video input and the resulting samples are time shifted, optionally with or without interpolation, to an orthogonal sampling grid. In a second aspect input samples are taken and shifted to an orthogonal sampling grid according to a line phase measure. The line phase measure can be derived from a number of measurements or interpolated. In one embodiment a delay is employed so that a measure of a later sample is used to shift an earlier sample.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.