Linking keyers to background source selections
US6452643B1 · kind B1 · utility
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Key dates
| Filing date | Sep 8, 1999 |
| Grant date | Sep 17, 2002 |
| Priority date | — |
| Expiry date | Sep 8, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N5/265
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Linking keyers to background source selections is achieved by defining a key link association table between background sources and keyers for an M/E of a production switcher. Key Add and Key Drop modifiers are provided so that the effects of the key link association table may be modified while making a background source change.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.