Layered mix effects switcher architecture
US4947254A · kind A · utility
10Cited by
5References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 27, 1989 |
| Grant date | Aug 7, 1990 |
| Priority date | — |
| Expiry date | Apr 27, 2009 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N5/268
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A mix effects based switcher architecture provides for processing of video signals with associated key signals throughout, the mix effects (M/E) banks within the switcher outputting both a composited video signal and a composited key signal for use by subsequent M/E banks. The outputs of the M/E banks may be combined together before being input to an output M/E bank. The output M/E bank provides a layered video signal with associated composited key signal at the output of the switcher.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.