Variable-size spatial and temporal video scaler
US6108047A · kind A · utility
93Cited by
8References
18Claims
0Family size
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Inventor
Key dates
| Filing date | Oct 28, 1997 |
| Grant date | Aug 22, 2000 |
| Priority date | — |
| Expiry date | Oct 28, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N7/0122
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Digital video signal processor scales in spatial and temporal domains. Linear, time-varying filter provides variable-size scaling of progressive and interlace-scan formats. Temporally, frame-rate conversion is accomplished using motion compensation. Vertical line-doubling and de-interlacing is achieved with line-based motion estimation. Bilinear interpolation provides low filtering distortion; other linear and spline functions are implemented using equivalent control functionality and arithmetic datapaths.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.