Signal processing system
US5982455A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 10, 1997 |
| Grant date | Nov 9, 1999 |
| Priority date | — |
| Expiry date | Apr 10, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N9/646
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An image processing system 20 comprises a format converter 21 for receiving a first signal having a larger bandwidth and a second signal having a smaller bandwidth, the first and second signals together representing an image. A processor 23 is arranged to process the first and second signals to produce signals representing a manipulated version of the image. The system further comprises a deriving circuit 25 which is arranged to derive from information in the larger bandwidth signal additional information for the smaller bandwidth signal. The deriving circuit derives an unknown value of a pixel as represented by the smaller bandwidth signal from known values of the pixel and the pixels adjacent thereto as represented by the larger bandwidth signal and from known values of the adjacent pixels as represented by the smaller bandwidth signal. The deriving circuit facilitates conversion of the first and second signals into another signal format representing the image.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.