Adaptive multistandard video comb filter
US5005074A · kind A · utility
2Cited by
4References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 17, 1989 |
| Grant date | Apr 2, 1991 |
| Priority date | — |
| Expiry date | Nov 17, 2009 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N9/78
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A multimode comb filter for comb filtering, e.g., NTSC and/or video signals includes delay means for concurrently providing video signals representing three adjacent horizontal lines. First and second combining means coupled to the delay means provide alternate 1-H comb filter signals in both the NTSC and modes. Control circuitry coupled to the delay means generates a control signal for adaptively selecting the one of the alternate 1-H comb filtered signals or appropriate proportions of both alternate 1-H comb filtered signals to form an output comb filtered signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.