Television special effects generator
US4700228A · kind A · utility
8Cited by
2References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 10, 1985 |
| Grant date | Oct 13, 1987 |
| Priority date | — |
| Expiry date | Sep 10, 2005 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N5/262
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A television special effects generator operating on digitally encoded video signals is disclosed. The generator includes a frame store, input addressor and output addressor. The input addressor means is controlled to write picture information into the frame store in a desired manner while the output addressor includes an up/down counter whose count direction can be reversed when a given count is reached. By reversing the up/down counter count direction part way through a line or field scan, the displayed picture appears in two parts, one being the mirror image of the other.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.