Interpolator for compressed video data
US4783698A · kind A · utility
33Cited by
8References
16Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 4, 1987 |
| Grant date | Nov 8, 1988 |
| Priority date | — |
| Expiry date | Dec 4, 2007 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N9/8042
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A simplified-in-structure vertical interpolator for compressed video data down-loaded from image memory to an odd-line line storage memory and an even-line line storage memory is followed in cascade by a horizontal interpolator. The horizontal interpolator calculates the difference between adjoining pixels in horizontally compressed video data from the vertical interpolator, divides the difference by the horizontal compression ratio and accumulates the divided differences during line trace intervals to recover de-compressed video data.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.