Patent US 5146333A
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| Patent number | US 5146333A (click link for details and documents via Google Patents) |
|---|---|
| Title | Self keyer with pre-emphasized fill video |
| Inventors | Daniel J. Chaplin |
| Company | The Grass Valley Group, Inc. |
| Filing date | 1989-10-06 |
| Grant date | 1992-09-08 |