Video mixer with multicolor boarder
US4823183A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 1, 1988 |
| Grant date | Apr 18, 1989 |
| Priority date | — |
| Expiry date | Feb 1, 2008 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N5/265
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Video effects apparatus comprises a wipe generator for generating a wipe signal and a matte generator for generating a matte signal. The matte generator receives the wipe signal and the color represented by the matte signal is dependent on the wipe signal. First and second control signals are provided in response to the wipe signal. A first video mixer has signal input terminals connected to receive a first video signal and the matte signal respectively and a mix control input terminal connected to receive the first control signal as a mix control signal, and a second video mixer has signal input terminals connected to receive respectively a second video signal and the output signal of the first video mixer. The second mixer has a mix control input terminal connected to receive the second control signal as a mix control signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.