Method and apparatus for converting an image signal
US4814873A · kind A · utility
11Cited by
4References
18Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 19, 1988 |
| Grant date | Mar 21, 1989 |
| Priority date | — |
| Expiry date | Jan 19, 2008 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N7/0135
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Method and apparatus for converting a hivision TV image signal to a computer terminal image signal are disclosed. Three line memories are provided for three continuous scan lines in a field. Data of one scan line of a hivision TV image signal is written into one of the three line memories and data previously written into other two are read therefrom. A read sampling clock period is set to be 4/5 of a write sampling clock period, and the outputs of the two line memories are linearly interpolated so that the scan lines appear at the same position in first and second fields.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.