Apparatus for processing predistorted first video signal and data reduced second video signal
US5185663A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 1, 1991 |
| Grant date | Feb 9, 1993 |
| Priority date | — |
| Expiry date | Jul 1, 2011 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N5/9261
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A system to facilitate mixing and recording video signals of different standards, e.g., in digital format via a digital video recorder, is disclosed. A first video signal in progressive scan format is converted to a standard format (e.g., line interlaced) prior to recording. A standard second video signal (e.g., line interlaced) is predistorted without format conversion prior to recording with the first signal to reduce artifacts associated with post-processing after recording. The predistortion involves vertically displacing selected picture elements. Before being displayed, a video output signal from the recorder is converted to the scan format of the first video signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.