Video signal processing method and apparatus
US7012651B2 · kind B2 · utility
3Cited by
10References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 22, 2002 |
| Grant date | Mar 14, 2006 |
| Priority date | — |
| Expiry date | Jul 18, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N21/485
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A video signal processing method and apparatus eliminates dot crawls and cross color interferences from a component video signal that has been subjected to Y/C separation. Components at a horizontal frequency of 3.58 MHz and a temporal frequency of 15 Hz are extracted from luminance signal data using a horizontal filter and a time filter. When the absolute value of the component value is equal to or larger than a predetermined value, an output of the horizontal filter is subtracted from the luminance signal data by a subtracter, thereby eliminating dot crawls.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.