Electrical noise reducer for T.V. signals
US4562470A · kind A · utility
12Cited by
2References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 7, 1983 |
| Grant date | Dec 31, 1985 |
| Priority date | — |
| Expiry date | Apr 7, 2003 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T5/20
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A digital system for removing, from a television signal, the electrical noise generated by faulty isolators from power lines. A thin horizontal segment noise detector locates possible noisy pixels (picture elements), and an image horizontal line verifier prevents false alarms given by the noise detector. An image corrector is provided to remove detected noise. The real time algorithm described in the invention is designed to provide a robust detector pseudo independent of noise waveforms, a memory window of three video delay lines, and a low cost digital hardware system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.