Video signal processing
US6922214B1 · kind B1 · utility
5Cited by
35References
25Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 3, 1999 |
| Grant date | Jul 26, 2005 |
| Priority date | — |
| Expiry date | Nov 3, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N7/0112
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Motion between adjacent fields of an interlaced video signal is analyzed by vertically interpolating the current field to produce a line signal which corresponds in vertical position with lines from the succeeding and preceding fields; and subtracting the signals to provide a field difference. The effect of vertical detail is reduced by comparing two field differences or by subtracting a local or global detail signal from the field difference.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.