Television signal digitizing method dividing progressive-scanned signal into two complementary interlace signals
US5457498A · kind A · utility
13Cited by
2References
26Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 19, 1994 |
| Grant date | Oct 10, 1995 |
| Priority date | — |
| Expiry date | Jan 19, 2014 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N11/02
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A television signal digitizing method reduces the quantity of information without deterioration of image quality when digitizing progressive-scanned signals. The method uses a step of dividing a progressive-scanned information into two complementary interlaces, that is, an interlace 1 and an interlace 2; a step of converting luminance information in the interlace 1 to digital information whose sampling frequency is X; a step of converting chrominance information in the interlace 1 to digital information whose sampling frequency is Y; and a step of generating supplementary information.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.