System and method of geometrical predistortion of overlaying graphics sources
US8159615B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 25, 2007 |
| Grant date | Apr 17, 2012 |
| Priority date | — |
| Expiry date | Feb 14, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N5/44504
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A system and method of geometrical predistortion of a graphical source signal is provided in which the graphical source signal is merged with an input video signal for display on a display device. The input video signal is received at a hardware scaler device and a predistorted video signal is generated there from. A warping map is calculated using a programmed processor and a graphics source signal is then predistorted, in software, using the warping map to generate a warped graphical overlay signal. The predistorted video signal from the hardware scaler is then merged with the warped graphical overlay signal from the programmed processor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.