Adaptive noise reduction apparatus using motion detection signal
US5247362A · kind A · utility
0Cited by
5References
2Claims
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Assignee
Inventor
Key dates
| Filing date | Dec 26, 1991 |
| Grant date | Sep 21, 1993 |
| Priority date | — |
| Expiry date | Dec 26, 2011 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N5/21
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A noise reduction apparatus is disclosed which comprises a horizontal motion compensator, a subtractor, a memory, NOR and OR gates, a current frame value altering unit, an adder, and delaying units, thereby greatly enhancing background picture quality of a picture and preventing after-image of a motion picture.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.