Filter working on image digital signals for video appliances
US5621474A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 28, 1994 |
| Grant date | Apr 15, 1997 |
| Priority date | — |
| Expiry date | Nov 28, 2014 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H2222/02
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A filter acting on digital image signals for apparatus of the video type includes at least first and second processing units adapted to elect an image edge, each processing unit includes an inferential circuit operating on fuzzy logic, which has first and second input terminals and an output terminal, and first and second comparison elements each having first and second input terminals and an output terminal, the input terminals being intended for receiving discrete digital signals of an image. The output terminals of the first and second comparison elements in the first processing unit are respectively connected to the first and second input terminals of the inferential circuit included in the first processing unit, and the output terminals of the first and second comparison elements in the second processing unit are respectively connected to the first and second input terminals of the inferential circuit included in the second processing unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.