Video system for displaying lower resolution video signals on higher resolution video monitors
US4866520A · kind A · utility
41Cited by
6References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 29, 1988 |
| Grant date | Sep 12, 1989 |
| Priority date | — |
| Expiry date | Feb 29, 2008 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N7/0135
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Lower resolution video signals (10) having alternating odd fields (12) and even fields (14) are stored in an odd line memory 20A and an even line 20B, respectively. An interpolator 22 interpolates adjacent odd and even lines. A selector 24 cyclically selects odd, even, and interpolated lines in a pre-selected pattern, such as one of the patterns illustrated in FIGS. 1, 7, 8A-F, and 9A-F. By selecting even, odd, and interpolated lines, the number of lines per picture is increased to produce a higher resolution video signal (30).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.