Dual purpose HDTV/NTSC receiver
US5173774A · kind A · utility
8Cited by
5References
27Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 18, 1990 |
| Grant date | Dec 22, 1992 |
| Priority date | — |
| Expiry date | Dec 18, 2010 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N7/012
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A dual purpose receiver can receive and process either 525-line NTSC signals or 787.5-line HDTV signals without the use of costly interlace-to-progressive scan conversion circuitry. The 525-line signal can either be stored a line at a time and repeated twice to create a 1575-line format, or it can also interpolate values based on the two adjacent received lines to create a form of averaging in the 1575-line format. The invention is not restricted to use with NTSC/HDTV systems.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.